/moodle/lib/weblib.php
PHP | 7102 lines | 5005 code | 725 blank | 1372 comment | 909 complexity | f692db5144ff53443dba58a43eee55fc MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.1, BSD-3-Clause, LGPL-2.0
- <?php // $Id$
- ///////////////////////////////////////////////////////////////////////////
- // //
- // NOTICE OF COPYRIGHT //
- // //
- // Moodle - Modular Object-Oriented Dynamic Learning Environment //
- // http://moodle.com //
- // //
- // Copyright (C) 1999 onwards Martin Dougiamas http://dougiamas.com //
- // //
- // This program is free software; you can redistribute it and/or modify //
- // it under the terms of the GNU General Public License as published by //
- // the Free Software Foundation; either version 2 of the License, or //
- // (at your option) any later version. //
- // //
- // This program is distributed in the hope that it will be useful, //
- // but WITHOUT ANY WARRANTY; without even the implied warranty of //
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
- // GNU General Public License for more details: //
- // //
- // http://www.gnu.org/copyleft/gpl.html //
- // //
- ///////////////////////////////////////////////////////////////////////////
- /**
- * Library of functions for web output
- *
- * Library of all general-purpose Moodle PHP functions and constants
- * that produce HTML output
- *
- * Other main libraries:
- * - datalib.php - functions that access the database.
- * - moodlelib.php - general-purpose Moodle functions.
- * @author Martin Dougiamas
- * @version $Id$
- * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
- * @package moodlecore
- */
- /// We are going to uses filterlib functions here
- require_once("$CFG->libdir/filterlib.php");
- require_once("$CFG->libdir/ajax/ajaxlib.php");
- /// Constants
- /// Define text formatting types ... eventually we can add Wiki, BBcode etc
- /**
- * Does all sorts of transformations and filtering
- */
- define('FORMAT_MOODLE', '0'); // Does all sorts of transformations and filtering
- /**
- * Plain HTML (with some tags stripped)
- */
- define('FORMAT_HTML', '1'); // Plain HTML (with some tags stripped)
- /**
- * Plain text (even tags are printed in full)
- */
- define('FORMAT_PLAIN', '2'); // Plain text (even tags are printed in full)
- /**
- * Wiki-formatted text
- * Deprecated: left here just to note that '3' is not used (at the moment)
- * and to catch any latent wiki-like text (which generates an error)
- */
- define('FORMAT_WIKI', '3'); // Wiki-formatted text
- /**
- * Markdown-formatted text http://daringfireball.net/projects/markdown/
- */
- define('FORMAT_MARKDOWN', '4'); // Markdown-formatted text http://daringfireball.net/projects/markdown/
- /**
- * TRUSTTEXT marker - if present in text, text cleaning should be bypassed
- */
- define('TRUSTTEXT', '#####TRUSTTEXT#####');
- /**
- * Javascript related defines
- */
- define('REQUIREJS_BEFOREHEADER', 0);
- define('REQUIREJS_INHEADER', 1);
- define('REQUIREJS_AFTERHEADER', 2);
- /**
- * Allowed tags - string of html tags that can be tested against for safe html tags
- * @global string $ALLOWED_TAGS
- */
- global $ALLOWED_TAGS;
- $ALLOWED_TAGS =
- '<p><br><b><i><u><font><table><tbody><thead><tfoot><span><div><tr><td><th><ol><ul><dl><li><dt><dd><h1><h2><h3><h4><h5><h6><hr><img><a><strong><emphasis><em><sup><sub><address><cite><blockquote><pre><strike><param><acronym><nolink><lang><tex><algebra><math><mi><mn><mo><mtext><mspace><ms><mrow><mfrac><msqrt><mroot><mstyle><merror><mpadded><mphantom><mfenced><msub><msup><msubsup><munder><mover><munderover><mmultiscripts><mtable><mtr><mtd><maligngroup><malignmark><maction><cn><ci><apply><reln><fn><interval><inverse><sep><condition><declare><lambda><compose><ident><quotient><exp><factorial><divide><max><min><minus><plus><power><rem><times><root><gcd><and><or><xor><not><implies><forall><exists><abs><conjugate><eq><neq><gt><lt><geq><leq><ln><log><int><diff><partialdiff><lowlimit><uplimit><bvar><degree><set><list><union><intersect><in><notin><subset><prsubset><notsubset><notprsubset><setdiff><sum><product><limit><tendsto><mean><sdev><variance><median><mode><moment><vector><matrix><matrixrow><determinant><transpose><selector><annotation><semantics><annotation-xml><tt><code>';
- /**
- * Allowed protocols - array of protocols that are safe to use in links and so on
- * @global string $ALLOWED_PROTOCOLS
- */
- $ALLOWED_PROTOCOLS = array('http', 'https', 'ftp', 'news', 'mailto', 'rtsp', 'teamspeak', 'gopher', 'mms',
- 'color', 'callto', 'cursor', 'text-align', 'font-size', 'font-weight', 'font-style', 'font-family',
- 'border', 'margin', 'padding', 'background', 'background-color', 'text-decoration'); // CSS as well to get through kses
- /// Functions
- /**
- * Add quotes to HTML characters
- *
- * Returns $var with HTML characters (like "<", ">", etc.) properly quoted.
- * This function is very similar to {@link p()}
- *
- * @param string $var the string potentially containing HTML characters
- * @param boolean $strip to decide if we want to strip slashes or no. Default to false.
- * true should be used to print data from forms and false for data from DB.
- * @return string
- */
- function s($var, $strip=false) {
- if ($var == '0') { // for integer 0, boolean false, string '0'
- return '0';
- }
- if ($strip) {
- return preg_replace("/&(#\d+);/i", "&$1;", htmlspecialchars(stripslashes_safe($var)));
- } else {
- return preg_replace("/&(#\d+);/i", "&$1;", htmlspecialchars($var));
- }
- }
- /**
- * Add quotes to HTML characters
- *
- * Prints $var with HTML characters (like "<", ">", etc.) properly quoted.
- * This function is very similar to {@link s()}
- *
- * @param string $var the string potentially containing HTML characters
- * @param boolean $strip to decide if we want to strip slashes or no. Default to false.
- * true should be used to print data from forms and false for data from DB.
- * @return string
- */
- function p($var, $strip=false) {
- echo s($var, $strip);
- }
- /**
- * Does proper javascript quoting.
- * Do not use addslashes anymore, because it does not work when magic_quotes_sybase is enabled.
- *
- * @since 1.8 - 22/02/2007
- * @param mixed value
- * @return mixed quoted result
- */
- function addslashes_js($var) {
- if (is_string($var)) {
- $var = str_replace('\\', '\\\\', $var);
- $var = str_replace(array('\'', '"', "\n", "\r", "\0"), array('\\\'', '\\"', '\\n', '\\r', '\\0'), $var);
- $var = str_replace('</', '<\/', $var); // XHTML compliance
- } else if (is_array($var)) {
- $var = array_map('addslashes_js', $var);
- } else if (is_object($var)) {
- $a = get_object_vars($var);
- foreach ($a as $key=>$value) {
- $a[$key] = addslashes_js($value);
- }
- $var = (object)$a;
- }
- return $var;
- }
- /**
- * Remove query string from url
- *
- * Takes in a URL and returns it without the querystring portion
- *
- * @param string $url the url which may have a query string attached
- * @return string
- */
- function strip_querystring($url) {
- if ($commapos = strpos($url, '?')) {
- return substr($url, 0, $commapos);
- } else {
- return $url;
- }
- }
- /**
- * Returns the URL of the HTTP_REFERER, less the querystring portion if required
- * @param boolean $stripquery if true, also removes the query part of the url.
- * @return string
- */
- function get_referer($stripquery=true) {
- if (isset($_SERVER['HTTP_REFERER'])) {
- if ($stripquery) {
- return strip_querystring($_SERVER['HTTP_REFERER']);
- } else {
- return $_SERVER['HTTP_REFERER'];
- }
- } else {
- return '';
- }
- }
- /**
- * Returns the name of the current script, WITH the querystring portion.
- * this function is necessary because PHP_SELF and REQUEST_URI and SCRIPT_NAME
- * return different things depending on a lot of things like your OS, Web
- * server, and the way PHP is compiled (ie. as a CGI, module, ISAPI, etc.)
- * <b>NOTE:</b> This function returns false if the global variables needed are not set.
- *
- * @return string
- */
- function me() {
- if (!empty($_SERVER['REQUEST_URI'])) {
- return $_SERVER['REQUEST_URI'];
- } else if (!empty($_SERVER['PHP_SELF'])) {
- if (!empty($_SERVER['QUERY_STRING'])) {
- return $_SERVER['PHP_SELF'] .'?'. $_SERVER['QUERY_STRING'];
- }
- return $_SERVER['PHP_SELF'];
- } else if (!empty($_SERVER['SCRIPT_NAME'])) {
- if (!empty($_SERVER['QUERY_STRING'])) {
- return $_SERVER['SCRIPT_NAME'] .'?'. $_SERVER['QUERY_STRING'];
- }
- return $_SERVER['SCRIPT_NAME'];
- } else if (!empty($_SERVER['URL'])) { // May help IIS (not well tested)
- if (!empty($_SERVER['QUERY_STRING'])) {
- return $_SERVER['URL'] .'?'. $_SERVER['QUERY_STRING'];
- }
- return $_SERVER['URL'];
- } else {
- notify('Warning: Could not find any of these web server variables: $REQUEST_URI, $PHP_SELF, $SCRIPT_NAME or $URL');
- return false;
- }
- }
- /**
- * Like {@link me()} but returns a full URL
- * @see me()
- * @return string
- */
- function qualified_me() {
- global $CFG;
- if (!empty($CFG->wwwroot)) {
- $url = parse_url($CFG->wwwroot);
- }
- if (!empty($url['host'])) {
- $hostname = $url['host'];
- } else if (!empty($_SERVER['SERVER_NAME'])) {
- $hostname = $_SERVER['SERVER_NAME'];
- } else if (!empty($_ENV['SERVER_NAME'])) {
- $hostname = $_ENV['SERVER_NAME'];
- } else if (!empty($_SERVER['HTTP_HOST'])) {
- $hostname = $_SERVER['HTTP_HOST'];
- } else if (!empty($_ENV['HTTP_HOST'])) {
- $hostname = $_ENV['HTTP_HOST'];
- } else {
- notify('Warning: could not find the name of this server!');
- return false;
- }
- if (!empty($url['port'])) {
- $hostname .= ':'.$url['port'];
- } else if (!empty($_SERVER['SERVER_PORT'])) {
- if ($_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443) {
- $hostname .= ':'.$_SERVER['SERVER_PORT'];
- }
- }
- // TODO, this does not work in the situation described in MDL-11061, but
- // I don't know how to fix it. Possibly believe $CFG->wwwroot ahead of what
- // the server reports.
- if (isset($_SERVER['HTTPS'])) {
- $protocol = ($_SERVER['HTTPS'] == 'on') ? 'https://' : 'http://';
- } else if (isset($_SERVER['SERVER_PORT'])) { # Apache2 does not export $_SERVER['HTTPS']
- $protocol = ($_SERVER['SERVER_PORT'] == '443') ? 'https://' : 'http://';
- } else {
- $protocol = 'http://';
- }
- $url_prefix = $protocol.$hostname;
- return $url_prefix . me();
- }
- /**
- * Class for creating and manipulating urls.
- *
- * See short write up here http://docs.moodle.org/en/Development:lib/weblib.php_moodle_url
- */
- class moodle_url {
- var $scheme = '';// e.g. http
- var $host = '';
- var $port = '';
- var $user = '';
- var $pass = '';
- var $path = '';
- var $fragment = '';
- var $params = array(); //associative array of query string params
- /**
- * Pass no arguments to create a url that refers to this page. Use empty string to create empty url.
- *
- * @param string $url url default null means use this page url with no query string
- * empty string means empty url.
- * if you pass any other type of url it will be parsed into it's bits, including query string
- * @param array $params these params override anything in the query string where params have the same name.
- */
- function moodle_url($url = null, $params = array()){
- global $FULLME;
- if ($url !== ''){
- if ($url === null){
- $url = strip_querystring($FULLME);
- }
- $parts = parse_url($url);
- if ($parts === FALSE){
- error('invalidurl');
- }
- if (isset($parts['query'])){
- parse_str(str_replace('&', '&', $parts['query']), $this->params);
- }
- unset($parts['query']);
- foreach ($parts as $key => $value){
- $this->$key = $value;
- }
- $this->params($params);
- }
- }
- /**
- * Add an array of params to the params for this page.
- *
- * The added params override existing ones if they have the same name.
- *
- * @param array $params Defaults to null. If null then return value of param 'name'.
- * @return array Array of Params for url.
- */
- function params($params = null) {
- if (!is_null($params)) {
- return $this->params = $params + $this->params;
- } else {
- return $this->params;
- }
- }
- /**
- * Remove all params if no arguments passed. Or else remove param $arg1, $arg2, etc.
- *
- * @param string $arg1
- * @param string $arg2
- * @param string $arg3
- */
- function remove_params(){
- if ($thisargs = func_get_args()){
- foreach ($thisargs as $arg){
- if (isset($this->params[$arg])){
- unset($this->params[$arg]);
- }
- }
- } else { // no args
- $this->params = array();
- }
- }
- /**
- * Add a param to the params for this page. The added param overrides existing one if they
- * have the same name.
- *
- * @param string $paramname name
- * @param string $param value
- */
- function param($paramname, $param){
- $this->params = array($paramname => $param) + $this->params;
- }
- function get_query_string($overrideparams = array()){
- $arr = array();
- $params = $overrideparams + $this->params;
- foreach ($params as $key => $val){
- $arr[] = urlencode($key)."=".urlencode($val);
- }
- return implode($arr, "&");
- }
- /**
- * Outputs params as hidden form elements.
- *
- * @param array $exclude params to ignore
- * @param integer $indent indentation
- * @param array $overrideparams params to add to the output params, these
- * override existing ones with the same name.
- * @return string html for form elements.
- */
- function hidden_params_out($exclude = array(), $indent = 0, $overrideparams=array()){
- $tabindent = str_repeat("\t", $indent);
- $str = '';
- $params = $overrideparams + $this->params;
- foreach ($params as $key => $val){
- if (FALSE === array_search($key, $exclude)) {
- $val = s($val);
- $str.= "$tabindent<input type=\"hidden\" name=\"$key\" value=\"$val\" />\n";
- }
- }
- return $str;
- }
- /**
- * Output url
- *
- * @param boolean $noquerystring whether to output page params as a query string in the url.
- * @param array $overrideparams params to add to the output url, these override existing ones with the same name.
- * @return string url
- */
- function out($noquerystring = false, $overrideparams = array()) {
- $uri = $this->scheme ? $this->scheme.':'.((strtolower($this->scheme) == 'mailto') ? '':'//'): '';
- $uri .= $this->user ? $this->user.($this->pass? ':'.$this->pass:'').'@':'';
- $uri .= $this->host ? $this->host : '';
- $uri .= $this->port ? ':'.$this->port : '';
- $uri .= $this->path ? $this->path : '';
- if (!$noquerystring){
- $uri .= (count($this->params)||count($overrideparams)) ? '?'.$this->get_query_string($overrideparams) : '';
- }
- $uri .= $this->fragment ? '#'.$this->fragment : '';
- return $uri;
- }
- /**
- * Output action url with sesskey
- *
- * @param boolean $noquerystring whether to output page params as a query string in the url.
- * @return string url
- */
- function out_action($overrideparams = array()) {
- $overrideparams = array('sesskey'=> sesskey()) + $overrideparams;
- return $this->out(false, $overrideparams);
- }
- }
- /**
- * Determine if there is data waiting to be processed from a form
- *
- * Used on most forms in Moodle to check for data
- * Returns the data as an object, if it's found.
- * This object can be used in foreach loops without
- * casting because it's cast to (array) automatically
- *
- * Checks that submitted POST data exists and returns it as object.
- *
- * @param string $url not used anymore
- * @return mixed false or object
- */
- function data_submitted($url='') {
- if (empty($_POST)) {
- return false;
- } else {
- return (object)$_POST;
- }
- }
- /**
- * Moodle replacement for php stripslashes() function,
- * works also for objects and arrays.
- *
- * The standard php stripslashes() removes ALL backslashes
- * even from strings - so C:\temp becomes C:temp - this isn't good.
- * This function should work as a fairly safe replacement
- * to be called on quoted AND unquoted strings (to be sure)
- *
- * @param mixed something to remove unsafe slashes from
- * @return mixed
- */
- function stripslashes_safe($mixed) {
- // there is no need to remove slashes from int, float and bool types
- if (empty($mixed)) {
- //nothing to do...
- } else if (is_string($mixed)) {
- if (ini_get_bool('magic_quotes_sybase')) { //only unescape single quotes
- $mixed = str_replace("''", "'", $mixed);
- } else { //the rest, simple and double quotes and backslashes
- $mixed = str_replace("\\'", "'", $mixed);
- $mixed = str_replace('\\"', '"', $mixed);
- $mixed = str_replace('\\\\', '\\', $mixed);
- }
- } else if (is_array($mixed)) {
- foreach ($mixed as $key => $value) {
- $mixed[$key] = stripslashes_safe($value);
- }
- } else if (is_object($mixed)) {
- $vars = get_object_vars($mixed);
- foreach ($vars as $key => $value) {
- $mixed->$key = stripslashes_safe($value);
- }
- }
- return $mixed;
- }
- /**
- * Recursive implementation of stripslashes()
- *
- * This function will allow you to strip the slashes from a variable.
- * If the variable is an array or object, slashes will be stripped
- * from the items (or properties) it contains, even if they are arrays
- * or objects themselves.
- *
- * @param mixed the variable to remove slashes from
- * @return mixed
- */
- function stripslashes_recursive($var) {
- if (is_object($var)) {
- $new_var = new object();
- $properties = get_object_vars($var);
- foreach($properties as $property => $value) {
- $new_var->$property = stripslashes_recursive($value);
- }
- } else if(is_array($var)) {
- $new_var = array();
- foreach($var as $property => $value) {
- $new_var[$property] = stripslashes_recursive($value);
- }
- } else if(is_string($var)) {
- $new_var = stripslashes($var);
- } else {
- $new_var = $var;
- }
- return $new_var;
- }
- /**
- * Recursive implementation of addslashes()
- *
- * This function will allow you to add the slashes from a variable.
- * If the variable is an array or object, slashes will be added
- * to the items (or properties) it contains, even if they are arrays
- * or objects themselves.
- *
- * @param mixed the variable to add slashes from
- * @return mixed
- */
- function addslashes_recursive($var) {
- if (is_object($var)) {
- $new_var = new object();
- $properties = get_object_vars($var);
- foreach($properties as $property => $value) {
- $new_var->$property = addslashes_recursive($value);
- }
- } else if (is_array($var)) {
- $new_var = array();
- foreach($var as $property => $value) {
- $new_var[$property] = addslashes_recursive($value);
- }
- } else if (is_string($var)) {
- $new_var = addslashes($var);
- } else { // nulls, integers, etc.
- $new_var = $var;
- }
- return $new_var;
- }
- /**
- * Given some normal text this function will break up any
- * long words to a given size by inserting the given character
- *
- * It's multibyte savvy and doesn't change anything inside html tags.
- *
- * @param string $string the string to be modified
- * @param int $maxsize maximum length of the string to be returned
- * @param string $cutchar the string used to represent word breaks
- * @return string
- */
- function break_up_long_words($string, $maxsize=20, $cutchar=' ') {
- /// Loading the textlib singleton instance. We are going to need it.
- $textlib = textlib_get_instance();
- /// First of all, save all the tags inside the text to skip them
- $tags = array();
- filter_save_tags($string,$tags);
- /// Process the string adding the cut when necessary
- $output = '';
- $length = $textlib->strlen($string);
- $wordlength = 0;
- for ($i=0; $i<$length; $i++) {
- $char = $textlib->substr($string, $i, 1);
- if ($char == ' ' or $char == "\t" or $char == "\n" or $char == "\r" or $char == "<" or $char == ">") {
- $wordlength = 0;
- } else {
- $wordlength++;
- if ($wordlength > $maxsize) {
- $output .= $cutchar;
- $wordlength = 0;
- }
- }
- $output .= $char;
- }
- /// Finally load the tags back again
- if (!empty($tags)) {
- $output = str_replace(array_keys($tags), $tags, $output);
- }
- return $output;
- }
- /**
- * This does a search and replace, ignoring case
- * This function is only used for versions of PHP older than version 5
- * which do not have a native version of this function.
- * Taken from the PHP manual, by bradhuizenga @ softhome.net
- *
- * @param string $find the string to search for
- * @param string $replace the string to replace $find with
- * @param string $string the string to search through
- * return string
- */
- if (!function_exists('str_ireplace')) { /// Only exists in PHP 5
- function str_ireplace($find, $replace, $string) {
- if (!is_array($find)) {
- $find = array($find);
- }
- if(!is_array($replace)) {
- if (!is_array($find)) {
- $replace = array($replace);
- } else {
- // this will duplicate the string into an array the size of $find
- $c = count($find);
- $rString = $replace;
- unset($replace);
- for ($i = 0; $i < $c; $i++) {
- $replace[$i] = $rString;
- }
- }
- }
- foreach ($find as $fKey => $fItem) {
- $between = explode(strtolower($fItem),strtolower($string));
- $pos = 0;
- foreach($between as $bKey => $bItem) {
- $between[$bKey] = substr($string,$pos,strlen($bItem));
- $pos += strlen($bItem) + strlen($fItem);
- }
- $string = implode($replace[$fKey],$between);
- }
- return ($string);
- }
- }
- /**
- * Locate the position of a string in another string
- *
- * This function is only used for versions of PHP older than version 5
- * which do not have a native version of this function.
- * Taken from the PHP manual, by dmarsh @ spscc.ctc.edu
- *
- * @param string $haystack The string to be searched
- * @param string $needle The string to search for
- * @param int $offset The position in $haystack where the search should begin.
- */
- if (!function_exists('stripos')) { /// Only exists in PHP 5
- function stripos($haystack, $needle, $offset=0) {
- return strpos(strtoupper($haystack), strtoupper($needle), $offset);
- }
- }
- /**
- * This function will print a button/link/etc. form element
- * that will work on both Javascript and non-javascript browsers.
- * Relies on the Javascript function openpopup in javascript.php
- *
- * All parameters default to null, only $type and $url are mandatory.
- *
- * $url must be relative to home page eg /mod/survey/stuff.php
- * @param string $url Web link relative to home page
- * @param string $name Name to be assigned to the popup window (this is used by
- * client-side scripts to "talk" to the popup window)
- * @param string $linkname Text to be displayed as web link
- * @param int $height Height to assign to popup window
- * @param int $width Height to assign to popup window
- * @param string $title Text to be displayed as popup page title
- * @param string $options List of additional options for popup window
- * @param string $return If true, return as a string, otherwise print
- * @param string $id id added to the element
- * @param string $class class added to the element
- * @return string
- * @uses $CFG
- */
- function element_to_popup_window ($type=null, $url=null, $name=null, $linkname=null,
- $height=400, $width=500, $title=null,
- $options=null, $return=false, $id=null, $class=null) {
- if (is_null($url)) {
- debugging('You must give the url to display in the popup. URL is missing - can\'t create popup window.', DEBUG_DEVELOPER);
- }
- global $CFG;
- if ($options == 'none') { // 'none' is legacy, should be removed in v2.0
- $options = null;
- }
- // add some sane default options for popup windows
- if (!$options) {
- $options = 'menubar=0,location=0,scrollbars,resizable';
- }
- if ($width) {
- $options .= ',width='. $width;
- }
- if ($height) {
- $options .= ',height='. $height;
- }
- if ($id) {
- $id = ' id="'.$id.'" ';
- }
- if ($class) {
- $class = ' class="'.$class.'" ';
- }
- if ($name) {
- $_name = $name;
- if (($name = preg_replace("/\s/", '_', $name)) != $_name) {
- debugging('The $name of a popup window shouldn\'t contain spaces - string modified. '. $_name .' changed to '. $name, DEBUG_DEVELOPER);
- }
- } else {
- $name = 'popup';
- }
- // get some default string, using the localized version of legacy defaults
- if (is_null($linkname) || $linkname === '') {
- $linkname = get_string('clickhere');
- }
- if (!$title) {
- $title = get_string('popupwindowname');
- }
- $fullscreen = 0; // must be passed to openpopup
- $element = '';
- switch ($type) {
- case 'button' :
- $element = '<input type="button" name="'. $name .'" title="'. $title .'" value="'. $linkname .'" '. $id . $class .
- "onclick=\"return openpopup('$url', '$name', '$options', $fullscreen);\" />\n";
- break;
- case 'link' :
- // some log url entries contain _SERVER[HTTP_REFERRER] in which case wwwroot is already there.
- if (!(strpos($url,$CFG->wwwroot) === false)) {
- $url = substr($url, strlen($CFG->wwwroot));
- }
- $element = '<a title="'. s(strip_tags($title)) .'" href="'. $CFG->wwwroot . $url .'" '.
- "$CFG->frametarget onclick=\"this.target='$name'; return openpopup('$url', '$name', '$options', $fullscreen);\">$linkname</a>";
- break;
- default :
- error('Undefined element - can\'t create popup window.');
- break;
- }
- if ($return) {
- return $element;
- } else {
- echo $element;
- }
- }
- /**
- * Creates and displays (or returns) a link to a popup window, using element_to_popup_window function.
- *
- * @return string html code to display a link to a popup window.
- * @see element_to_popup_window()
- */
- function link_to_popup_window ($url, $name=null, $linkname=null,
- $height=400, $width=500, $title=null,
- $options=null, $return=false) {
- return element_to_popup_window('link', $url, $name, $linkname, $height, $width, $title, $options, $return, null, null);
- }
- /**
- * Creates and displays (or returns) a buttons to a popup window, using element_to_popup_window function.
- *
- * @return string html code to display a button to a popup window.
- * @see element_to_popup_window()
- */
- function button_to_popup_window ($url, $name=null, $linkname=null,
- $height=400, $width=500, $title=null, $options=null, $return=false,
- $id=null, $class=null) {
- return element_to_popup_window('button', $url, $name, $linkname, $height, $width, $title, $options, $return, $id, $class);
- }
- /**
- * Prints a simple button to close a window
- * @param string $name name of the window to close
- * @param boolean $return whether this function should return a string or output it
- * @return string if $return is true, nothing otherwise
- */
- function close_window_button($name='closewindow', $return=false) {
- global $CFG;
- $output = '';
- $output .= '<div class="closewindow">' . "\n";
- $output .= '<form action="#"><div>';
- $output .= '<input type="button" onclick="self.close();" value="'.get_string($name).'" />';
- $output .= '</div></form>';
- $output .= '</div>' . "\n";
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /*
- * Try and close the current window immediately using Javascript
- * @param int $delay the delay in seconds before closing the window
- */
- function close_window($delay=0) {
- ?>
- <script type="text/javascript">
- //<![CDATA[
- function close_this_window() {
- self.close();
- }
- setTimeout("close_this_window()", <?php echo $delay * 1000 ?>);
- //]]>
- </script>
- <noscript><center>
- <?php print_string('pleaseclose') ?>
- </center></noscript>
- <?php
- die;
- }
- /**
- * Given an array of values, output the HTML for a select element with those options.
- * Normally, you only need to use the first few parameters.
- *
- * @param array $options The options to offer. An array of the form
- * $options[{value}] = {text displayed for that option};
- * @param string $name the name of this form control, as in <select name="..." ...
- * @param string $selected the option to select initially, default none.
- * @param string $nothing The label for the 'nothing is selected' option. Defaults to get_string('choose').
- * Set this to '' if you don't want a 'nothing is selected' option.
- * @param string $script in not '', then this is added to the <select> element as an onchange handler.
- * @param string $nothingvalue The value corresponding to the $nothing option. Defaults to 0.
- * @param boolean $return if false (the default) the the output is printed directly, If true, the
- * generated HTML is returned as a string.
- * @param boolean $disabled if true, the select is generated in a disabled state. Default, false.
- * @param int $tabindex if give, sets the tabindex attribute on the <select> element. Default none.
- * @param string $id value to use for the id attribute of the <select> element. If none is given,
- * then a suitable one is constructed.
- * @param mixed $listbox if false, display as a dropdown menu. If true, display as a list box.
- * By default, the list box will have a number of rows equal to min(10, count($options)), but if
- * $listbox is an integer, that number is used for size instead.
- * @param boolean $multiple if true, enable multiple selections, else only 1 item can be selected. Used
- * when $listbox display is enabled
- * @param string $class value to use for the class attribute of the <select> element. If none is given,
- * then a suitable one is constructed.
- */
- function choose_from_menu ($options, $name, $selected='', $nothing='choose', $script='',
- $nothingvalue='0', $return=false, $disabled=false, $tabindex=0,
- $id='', $listbox=false, $multiple=false, $class='') {
- if ($nothing == 'choose') {
- $nothing = get_string('choose') .'...';
- }
- $attributes = ($script) ? 'onchange="'. $script .'"' : '';
- if ($disabled) {
- $attributes .= ' disabled="disabled"';
- }
- if ($tabindex) {
- $attributes .= ' tabindex="'.$tabindex.'"';
- }
- if ($id ==='') {
- $id = 'menu'.$name;
- // name may contaion [], which would make an invalid id. e.g. numeric question type editing form, assignment quickgrading
- $id = str_replace('[', '', $id);
- $id = str_replace(']', '', $id);
- }
- if ($class ==='') {
- $class = 'menu'.$name;
- // name may contaion [], which would make an invalid class. e.g. numeric question type editing form, assignment quickgrading
- $class = str_replace('[', '', $class);
- $class = str_replace(']', '', $class);
- }
- $class = 'select ' . $class; /// Add 'select' selector always
- if ($listbox) {
- if (is_integer($listbox)) {
- $size = $listbox;
- } else {
- $numchoices = count($options);
- if ($nothing) {
- $numchoices += 1;
- }
- $size = min(10, $numchoices);
- }
- $attributes .= ' size="' . $size . '"';
- if ($multiple) {
- $attributes .= ' multiple="multiple"';
- }
- }
- $output = '<select id="'. $id .'" class="'. $class .'" name="'. $name .'" '. $attributes .'>' . "\n";
- if ($nothing) {
- $output .= ' <option value="'. s($nothingvalue) .'"'. "\n";
- if ($nothingvalue === $selected) {
- $output .= ' selected="selected"';
- }
- $output .= '>'. $nothing .'</option>' . "\n";
- }
- if (!empty($options)) {
- foreach ($options as $value => $label) {
- $output .= ' <option value="'. s($value) .'"';
- if ((string)$value == (string)$selected ||
- (is_array($selected) && in_array($value, $selected))) {
- $output .= ' selected="selected"';
- }
- if ($label === '') {
- $output .= '>'. $value .'</option>' . "\n";
- } else {
- $output .= '>'. $label .'</option>' . "\n";
- }
- }
- }
- $output .= '</select>' . "\n";
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Choose value 0 or 1 from a menu with options 'No' and 'Yes'.
- * Other options like choose_from_menu.
- * @param string $name
- * @param string $selected
- * @param string $string (defaults to '')
- * @param boolean $return whether this function should return a string or output it (defaults to false)
- * @param boolean $disabled (defaults to false)
- * @param int $tabindex
- */
- function choose_from_menu_yesno($name, $selected, $script = '',
- $return = false, $disabled = false, $tabindex = 0) {
- return choose_from_menu(array(get_string('no'), get_string('yes')), $name,
- $selected, '', $script, '0', $return, $disabled, $tabindex);
- }
- /**
- * Just like choose_from_menu, but takes a nested array (2 levels) and makes a dropdown menu
- * including option headings with the first level.
- */
- function choose_from_menu_nested($options,$name,$selected='',$nothing='choose',$script = '',
- $nothingvalue=0,$return=false,$disabled=false,$tabindex=0) {
- if ($nothing == 'choose') {
- $nothing = get_string('choose') .'...';
- }
- $attributes = ($script) ? 'onchange="'. $script .'"' : '';
- if ($disabled) {
- $attributes .= ' disabled="disabled"';
- }
- if ($tabindex) {
- $attributes .= ' tabindex="'.$tabindex.'"';
- }
- $output = '<select id="menu'.$name.'" name="'. $name .'" '. $attributes .'>' . "\n";
- if ($nothing) {
- $output .= ' <option value="'. $nothingvalue .'"'. "\n";
- if ($nothingvalue === $selected) {
- $output .= ' selected="selected"';
- }
- $output .= '>'. $nothing .'</option>' . "\n";
- }
- if (!empty($options)) {
- foreach ($options as $section => $values) {
- $output .= ' <optgroup label="'. s(format_string($section)) .'">'."\n";
- foreach ($values as $value => $label) {
- $output .= ' <option value="'. format_string($value) .'"';
- if ((string)$value == (string)$selected) {
- $output .= ' selected="selected"';
- }
- if ($label === '') {
- $output .= '>'. $value .'</option>' . "\n";
- } else {
- $output .= '>'. $label .'</option>' . "\n";
- }
- }
- $output .= ' </optgroup>'."\n";
- }
- }
- $output .= '</select>' . "\n";
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Given an array of values, creates a group of radio buttons to be part of a form
- *
- * @param array $options An array of value-label pairs for the radio group (values as keys)
- * @param string $name Name of the radiogroup (unique in the form)
- * @param string $checked The value that is already checked
- */
- function choose_from_radio ($options, $name, $checked='', $return=false) {
- static $idcounter = 0;
- if (!$name) {
- $name = 'unnamed';
- }
- $output = '<span class="radiogroup '.$name."\">\n";
- if (!empty($options)) {
- $currentradio = 0;
- foreach ($options as $value => $label) {
- $htmlid = 'auto-rb'.sprintf('%04d', ++$idcounter);
- $output .= ' <span class="radioelement '.$name.' rb'.$currentradio."\">";
- $output .= '<input name="'.$name.'" id="'.$htmlid.'" type="radio" value="'.$value.'"';
- if ($value == $checked) {
- $output .= ' checked="checked"';
- }
- if ($label === '') {
- $output .= ' /> <label for="'.$htmlid.'">'. $value .'</label></span>' . "\n";
- } else {
- $output .= ' /> <label for="'.$htmlid.'">'. $label .'</label></span>' . "\n";
- }
- $currentradio = ($currentradio + 1) % 2;
- }
- }
- $output .= '</span>' . "\n";
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /** Display an standard html checkbox with an optional label
- *
- * @param string $name The name of the checkbox
- * @param string $value The valus that the checkbox will pass when checked
- * @param boolean $checked The flag to tell the checkbox initial state
- * @param string $label The label to be showed near the checkbox
- * @param string $alt The info to be inserted in the alt tag
- */
- function print_checkbox ($name, $value, $checked = true, $label = '', $alt = '', $script='',$return=false) {
- static $idcounter = 0;
- if (!$name) {
- $name = 'unnamed';
- }
- if ($alt) {
- $alt = strip_tags($alt);
- } else {
- $alt = 'checkbox';
- }
- if ($checked) {
- $strchecked = ' checked="checked"';
- } else {
- $strchecked = '';
- }
- $htmlid = 'auto-cb'.sprintf('%04d', ++$idcounter);
- $output = '<span class="checkbox '.$name."\">";
- $output .= '<input name="'.$name.'" id="'.$htmlid.'" type="checkbox" value="'.$value.'" alt="'.$alt.'"'.$strchecked.' '.((!empty($script)) ? ' onclick="'.$script.'" ' : '').' />';
- if(!empty($label)) {
- $output .= ' <label for="'.$htmlid.'">'.$label.'</label>';
- }
- $output .= '</span>'."\n";
- if (empty($return)) {
- echo $output;
- } else {
- return $output;
- }
- }
- /** Display an standard html text field with an optional label
- *
- * @param string $name The name of the text field
- * @param string $value The value of the text field
- * @param string $label The label to be showed near the text field
- * @param string $alt The info to be inserted in the alt tag
- */
- function print_textfield ($name, $value, $alt = '',$size=50,$maxlength=0, $return=false) {
- static $idcounter = 0;
- if (empty($name)) {
- $name = 'unnamed';
- }
- if (empty($alt)) {
- $alt = 'textfield';
- }
- if (!empty($maxlength)) {
- $maxlength = ' maxlength="'.$maxlength.'" ';
- }
- $htmlid = 'auto-tf'.sprintf('%04d', ++$idcounter);
- $output = '<span class="textfield '.$name."\">";
- $output .= '<input name="'.$name.'" id="'.$htmlid.'" type="text" value="'.$value.'" size="'.$size.'" '.$maxlength.' alt="'.$alt.'" />';
- $output .= '</span>'."\n";
- if (empty($return)) {
- echo $output;
- } else {
- return $output;
- }
- }
- /**
- * Implements a complete little popup form
- *
- * @uses $CFG
- * @param string $common The URL up to the point of the variable that changes
- * @param array $options Alist of value-label pairs for the popup list
- * @param string $formid Id must be unique on the page (originaly $formname)
- * @param string $selected The option that is already selected
- * @param string $nothing The label for the "no choice" option
- * @param string $help The name of a help page if help is required
- * @param string $helptext The name of the label for the help button
- * @param boolean $return Indicates whether the function should return the text
- * as a string or echo it directly to the page being rendered
- * @param string $targetwindow The name of the target page to open the linked page in.
- * @param string $selectlabel Text to place in a [label] element - preferred for accessibility.
- * @param array $optionsextra TODO, an array?
- * @param mixed $gobutton If set, this turns off the JavaScript and uses a 'go'
- * button instead (as is always included for JS-disabled users). Set to true
- * for a literal 'Go' button, or to a string to change the name of the button.
- * @return string If $return is true then the entire form is returned as a string.
- * @todo Finish documenting this function<br>
- */
- function popup_form($common, $options, $formid, $selected='', $nothing='choose', $help='', $helptext='', $return=false,
- $targetwindow='self', $selectlabel='', $optionsextra=NULL, $gobutton=NULL) {
- global $CFG;
- static $go, $choose; /// Locally cached, in case there's lots on a page
- if (empty($options)) {
- return '';
- }
- if (!isset($go)) {
- $go = get_string('go');
- }
- if ($nothing == 'choose') {
- if (!isset($choose)) {
- $choose = get_string('choose');
- }
- $nothing = $choose.'...';
- }
- // changed reference to document.getElementById('id_abc') instead of document.abc
- // MDL-7861
- $output = '<form action="'.$CFG->wwwroot.'/course/jumpto.php"'.
- ' method="get" '.
- $CFG->frametarget.
- ' id="'.$formid.'"'.
- ' class="popupform">';
- if ($help) {
- $button = helpbutton($help, $helptext, 'moodle', true, false, '', true);
- } else {
- $button = '';
- }
- if ($selectlabel) {
- $selectlabel = '<label for="'.$formid.'_jump">'.$selectlabel.'</label>';
- }
- if ($gobutton) {
- // Using the no-JavaScript version
- $javascript = '';
- } else if (check_browser_version('MSIE') || (check_browser_version('Opera') && !check_browser_operating_system("Linux"))) {
- //IE and Opera fire the onchange when ever you move into a dropdown list with the keyboard.
- //onfocus will call a function inside dropdown.js. It fixes this IE/Opera behavior.
- //Note: There is a bug on Opera+Linux with the javascript code (first mouse selection is inactive),
- //so we do not fix the Opera behavior on Linux
- $javascript = ' onfocus="initSelect(\''.$formid.'\','.$targetwindow.')"';
- } else {
- //Other browser
- $javascript = ' onchange="'.$targetwindow.
- '.location=document.getElementById(\''.$formid.
- '\').jump.options[document.getElementById(\''.
- $formid.'\').jump.selectedIndex].value;"';
- }
- $output .= '<div>'.$selectlabel.$button.'<select id="'.$formid.'_jump" name="jump"'.$javascript.'>'."\n";
- if ($nothing != '') {
- $output .= " <option value=\"javascript:void(0)\">$nothing</option>\n";
- }
- $inoptgroup = false;
- foreach ($options as $value => $label) {
- if ($label == '--') { /// we are ending previous optgroup
- /// Check to see if we already have a valid open optgroup
- /// XHTML demands that there be at least 1 option within an optgroup
- if ($inoptgroup and (count($optgr) > 1) ) {
- $output .= implode('', $optgr);
- $output .= ' </optgroup>';
- }
- $optgr = array();
- $inoptgroup = false;
- continue;
- } else if (substr($label,0,2) == '--') { /// we are starting a new optgroup
- /// Check to see if we already have a valid open optgroup
- /// XHTML demands that there be at least 1 option within an optgroup
- if ($inoptgroup and (count($optgr) > 1) ) {
- $output .= implode('', $optgr);
- $output .= ' </optgroup>';
- }
- unset($optgr);
- $optgr = array();
- $optgr[] = ' <optgroup label="'. s(format_string(substr($label,2))) .'">'; // Plain labels
- $inoptgroup = true; /// everything following will be in an optgroup
- continue;
- } else {
- if (!empty($CFG->usesid) && !isset($_COOKIE[session_name()]))
- {
- $url=sid_process_url( $common . $value );
- } else
- {
- $url=$common . $value;
- }
- $optstr = ' <option value="' . $url . '"';
- if ($value == $selected) {
- $optstr .= ' selected="selected"';
- }
- if (!empty($optionsextra[$value])) {
- $optstr .= ' '.$optionsextra[$value];
- }
- if ($label) {
- $optstr .= '>'. $label .'</option>' . "\n";
- } else {
- $optstr .= '>'. $value .'</option>' . "\n";
- }
- if ($inoptgroup) {
- $optgr[] = $optstr;
- } else {
- $output .= $optstr;
- }
- }
- }
- /// catch the final group if not closed
- if ($inoptgroup and count($optgr) > 1) {
- $output .= implode('', $optgr);
- $output .= ' </optgroup>';
- }
- $output .= '</select>';
- $output .= '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
- if ($gobutton) {
- $output .= '<input type="submit" value="'.
- ($gobutton===true ? $go : $gobutton).'" />';
- } else {
- $output .= '<div id="noscript'.$formid.'" style="display: inline;">';
- $output .= '<input type="submit" value="'.$go.'" /></div>';
- $output .= '<script type="text/javascript">'.
- "\n//<![CDATA[\n".
- 'document.getElementById("noscript'.$formid.'").style.display = "none";'.
- "\n//]]>\n".'</script>';
- }
- $output .= '</div></form>';
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Prints some red text
- *
- * @param string $error The text to be displayed in red
- */
- function formerr($error) {
- if (!empty($error)) {
- echo '<span class="error">'. $error .'</span>';
- }
- }
- /**
- * Validates an email to make sure it makes sense.
- *
- * @param string $address The email address to validate.
- * @return boolean
- */
- function validate_email($address) {
- return (ereg('^[-!#$%&\'*+\\/0-9=?A-Z^_`a-z{|}~]+'.
- '(\.[-!#$%&\'*+\\/0-9=?A-Z^_`a-z{|}~]+)*'.
- '@'.
- '[-!#$%&\'*+\\/0-9=?A-Z^_`a-z{|}~]+\.'.
- '[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+$',
- $address));
- }
- /**
- * Extracts file argument either from file parameter or PATH_INFO
- *
- * @param string $scriptname name of the calling script
- * @return string file path (only safe characters)
- */
- function get_file_argument($scriptname) {
- global $_SERVER;
- $relativepath = FALSE;
- // first try normal parameter (compatible method == no relative links!)
- $relativepath = optional_param('file', FALSE, PARAM_PATH);
- if ($relativepath === '/testslasharguments') {
- echo 'test -1 : Incorrect use - try "file.php/testslasharguments" instead'; //indicate fopen/fread works for health center
- die;
- }
- // then try extract file from PATH_INFO (slasharguments method)
- if (!$relativepath and !empty($_SERVER['PATH_INFO'])) {
- $path_info = $_SERVER['PATH_INFO'];
- // check that PATH_INFO works == must not contain the script name
- if (!strpos($path_info, $scriptname)) {
- $relativepath = clean_param(rawurldecode($path_info), PARAM_PATH);
- if ($relativepath === '/testslasharguments') {
- echo 'test 1 : Slasharguments test passed. Server confguration is compatible with file.php/1/pic.jpg slashargument setting.'; //indicate ok for health center
- die;
- }
- }
- }
- // now if both fail try the old way
- // (for compatibility with misconfigured or older buggy php implementations)
- if (!$relativepath) {
- $arr = explode($scriptname, me());
- if (!empty($arr[1])) {
- $path_info = strip_querystring($arr[1]);
- $relativepath = clean_param(rawurldecode($path_info), PARAM_PATH);
- if ($relativepath === '/testslasharguments') {
- echo 'test 2 : Slasharguments test passed (compatibility hack). Server confguration may be compatible with file.php/1/pic.jpg slashargument setting'; //indicate ok for health center
- die;
- }
- }
- }
- return $relativepath;
- }
- /**
- * Searches the current environment variables for some slash arguments
- *
- * @param string $file ?
- * @todo Finish documenting this function
- */
- function get_slash_arguments($file='file.php') {
- if (!$string = me()) {
- return false;
- }
- $pathinfo = explode($file, $string);
- if (!empty($pathinfo[1])) {
- return addslashes($pathinfo[1]);
- } else {
- return false;
- }
- }
- /**
- * Extracts arguments from "/foo/bar/something"
- * eg http://mysite.com/script.php/foo/bar/something
- *
- * @param string $string ?
- * @param int $i ?
- * @return array|string
- * @todo Finish documenting this function
- */
- function parse_slash_arguments($string, $i=0) {
- if (detect_munged_arguments($string)) {
- return false;
- }
- $args = explode('/', $string);
- if ($i) { // return just the required argument
- return $args[$i];
- } else { // return the whole array
- array_shift($args); // get rid of the empty first one
- return $args;
- }
- }
- /**
- * Just returns an array of text formats suitable for a popup menu
- *
- * @uses FORMAT_MOODLE
- * @uses FORMAT_HTML
- * @uses FORMAT_PLAIN
- * @uses FORMAT_MARKDOWN
- * @return array
- */
- function format_text_menu() {
- return array (FORMAT_MOODLE => get_string('formattext'),
- FORMAT_HTML => get_string('formathtml'),
- FORMAT_PLAIN => get_string('formatplain'),
- FORMAT_MARKDOWN => get_string('formatmarkdown'));
- }
- /**
- * Given text in a variety of format codings, this function returns
- * the text as safe HTML.
- *
- * This function should mainly be used for long strings like posts,
- * answers, glossary items etc. For short strings @see format_string().
- *
- * @uses $CFG
- * @uses FORMAT_MOODLE
- * @uses FORMAT_HTML
- * @uses FORMAT_PLAIN
- * @uses FORMAT_WIKI
- * @uses FORMAT_MARKDOWN
- * @param string $text The text to be formatted. This is raw text originally from user input.
- * @param int $format Identifier of the text format to be used
- * (FORMAT_MOODLE, FORMAT_HTML, FORMAT_PLAIN, FORMAT_WIKI, FORMAT_MARKDOWN)
- * @param array $options ?
- * @param int $courseid ?
- * @return string
- * @todo Finish documenting this function
- */
- function format_text($text, $format=FORMAT_MOODLE, $options=NULL, $courseid=NULL) {
- global $CFG, $COURSE;
- static $croncache = array();
- if ($text === '') {
- return ''; // no need to do any filters and cleaning
- }
- if (!isset($options->trusttext)) {
- $options->trusttext = false;
- }
- if (!isset($options->noclean)) {
- $options->noclean=false;
- }
- if (!isset($options->nocache)) {
- $options->nocache=false;
- }
- if (!isset($options->smiley)) {
- $options->smiley=true;
- }
- if (!isset($options->filter)) {
- $options->filter=true;
- }
- if (!isset($options->para)) {
- $options->para=true;
- }
- if (!isset($options->newlines)) {
- $options->newlines=true;
- }
- if (empty($courseid)) {
- $courseid = $COURSE->id;
- }
- if (!empty($CFG->cachetext) and empty($options->nocache)) {
- $time = time() - $CFG->cachetext;
- $md5key = md5($text.'-'.(int)$courseid.'-'.current_language().'-'.(int)$format.(int)$options->trusttext.(int)$options->noclean.(int)$options->smiley.(int)$options->filter.(int)$options->para.(int)$options->newlines);
- if (defined('FULLME') and FULLME == 'cron') {
- if (isset($croncache[$md5key])) {
- return $croncache[$md5key];
- }
- }
- if ($oldcacheitem = get_record_sql('SELECT * FROM '.$CFG->prefix.'cache_text WHERE md5key = \''.$md5key.'\'', true)) {
- if ($oldcacheitem->timemodified >= $time) {
- if (defined('FULLME') and FULLME == 'cron') {
- if (count($croncache) > 150) {
- reset($croncache);
- $key = key($croncache);
- unset($croncache[$key]);
- }
- $croncache[$md5key] = $oldcacheitem->formattedtext;
- }
- return $oldcacheitem->formattedtext;
- }
- }
- }
- // trusttext overrides the noclean option!
- if ($options->trusttext) {
- if (trusttext_present($text)) {
- $text = trusttext_strip($text);
- if (!empty($CFG->enabletrusttext)) {
- $options->noclean = true;
- } else {
- $options->noclean = false;
- }
- } else {
- $options->noclean = false;
- }
- } else if (!debugging('', DEBUG_DEVELOPER)) {
- // strip any forgotten trusttext in non-developer mode
- // do not forget to disable text cache when debugging trusttext!!
- $text = trusttext_strip($text);
- }
- $CFG->currenttextiscacheable = true; // Default status - can be changed by any filter
- switch ($format) {
- case FORMAT_HTML:
- if ($options->smiley) {
- replace_smilies($text);
- }
- if (!$options->noclean) {
- $text = clean_text($text, FORMAT_HTML);
- }
- if ($options->filter) {
- $text = filter_text($text, $courseid);
- }
- break;
- case FORMAT_PLAIN:
- $text = s($text); // cleans dangerous JS
- $text = rebuildnolinktag($text);
- $text = str_replace(' ', ' ', $text);
- $text = nl2br($text);
- break;
- case FORMAT_WIKI:
- // this format is deprecated
- $text = '<p>NOTICE: Wiki-like formatting has been removed from Moodle. You should not be seeing
- this message as all texts should have been converted to Markdown format instead.
- Please post a bug report to http://moodle.org/bugs with information about where you
- saw this message.</p>'.s($text);
- break;
- case FORMAT_MARKDOWN:
- $text = markdown_to_html($text);
- if ($options->smiley) {
- replace_smilies($text);
- }
- if (!$options->noclean) {
- $text = clean_text($text, FORMAT_HTML);
- }
- if ($options->filter) {
- $text = filter_text($text, $courseid);
- }
- break;
- default: // FORMAT_MOODLE or anything else
- $text = text_to_html($text, $options->smiley, $options->para, $options->newlines);
- if (!$options->noclean) {
- $text = clean_text($text, FORMAT_HTML);
- }
- if ($options->filter) {
- $text = filter_text($text, $courseid);
- }
- break;
- }
- if (empty($options->nocache) and !empty($CFG->cachetext) and $CFG->currenttextiscacheable) {
- if (defined('FULLME') and FULLME == 'cron') {
- // special static cron cache - no need to store it in db if its not already there
- if (count($croncache) > 150) {
- reset($croncache);
- $key = key($croncache);
- unset($croncache[$key]);
- }
- $croncache[$md5key] = $text;
- return $text;
- }
- $newcacheitem = new object();
- $newcacheitem->md5key = $md5key;
- $newcacheitem->formattedtext = addslashes($text);
- $newcacheitem->timemodified = time();
- if ($oldcacheitem) { // See bug 4677 for discussion
- $newcacheitem->id = $oldcacheitem->id;
- @update_record('cache_text', $newcacheitem); // Update existing record in the cache table
- // It's unlikely that the cron cache cleaner could have
- // deleted this entry in the meantime, as it allows
- // some extra time to cover these cases.
- } else {
- @insert_record('cache_text', $newcacheitem); // Insert a new record in the cache table
- // Again, it's possible that another user has caused this
- // record to be created already in the time that it took
- // to traverse this function. That's OK too, as the
- // call above handles duplicate entries, and eventually
- // the cron cleaner will delete them.
- }
- }
- return $text;
- }
- /** Converts the text format from the value to the 'internal'
- * name or vice versa. $key can either be the value or the name
- * and you get the other back.
- *
- * @param mixed int 0-4 or string one of 'moodle','html','plain','markdown'
- * @return mixed as above but the other way around!
- */
- function text_format_name( $key ) {
- $lookup = array();
- $lookup[FORMAT_MOODLE] = 'moodle';
- $lookup[FORMAT_HTML] = 'html';
- $lookup[FORMAT_PLAIN] = 'plain';
- $lookup[FORMAT_MARKDOWN] = 'markdown';
- $value = "error";
- if (!is_numeric($key)) {
- $key = strtolower( $key );
- $value = array_search( $key, $lookup );
- }
- else {
- if (isset( $lookup[$key] )) {
- $value = $lookup[ $key ];
- }
- }
- return $value;
- }
- /**
- * Resets all data related to filters, called during upgrade or when filter settings change.
- * @return void
- */
- function reset_text_filters_cache() {
- global $CFG;
- delete_records('cache_text');
- $purifdir = $CFG->dataroot.'/cache/htmlpurifier';
- remove_dir($purifdir, true);
- }
- /** Given a simple string, this function returns the string
- * processed by enabled string filters if $CFG->filterall is enabled
- *
- * This function should be used to print short strings (non html) that
- * need filter processing e.g. activity titles, post subjects,
- * glossary concepts.
- *
- * @param string $string The string to be filtered.
- * @param boolean $striplinks To strip any link in the result text (Moodle 1.8 default changed from false to true! MDL-8713)
- * @param int $courseid Current course as filters can, potentially, use it
- * @return string
- */
- function format_string ($string, $striplinks=true, $courseid=NULL ) {
- global $CFG, $COURSE;
- //We'll use a in-memory cache here to speed up repeated strings
- static $strcache = false;
- if ($strcache === false or count($strcache) > 2000 ) { // this number might need some tuning to limit memory usage in cron
- $strcache = array();
- }
- //init course id
- if (empty($courseid)) {
- $courseid = $COURSE->id;
- }
- //Calculate md5
- $md5 = md5($string.'<+>'.$striplinks.'<+>'.$courseid.'<+>'.current_language());
- //Fetch from cache if possible
- if (isset($strcache[$md5])) {
- return $strcache[$md5];
- }
- // First replace all ampersands not followed by html entity code
- $string = preg_replace("/\&(?![a-zA-Z0-9#]{1,8};)/", "&", $string);
- if (!empty($CFG->filterall)) {
- $string = filter_string($string, $courseid);
- }
- // If the site requires it, strip ALL tags from this string
- if (!empty($CFG->formatstringstriptags)) {
- $string = strip_tags($string);
- } else {
- // Otherwise strip just links if that is required (default)
- if ($striplinks) { //strip links in string
- $string = preg_replace('/(<a\s[^>]+?>)(.+?)(<\/a>)/is','$2',$string);
- }
- $string = clean_text($string);
- }
- //Store to cache
- $strcache[$md5] = $string;
- return $string;
- }
- /**
- * Given text in a variety of format codings, this function returns
- * the text as plain text suitable for plain email.
- *
- * @uses FORMAT_MOODLE
- * @uses FORMAT_HTML
- * @uses FORMAT_PLAIN
- * @uses FORMAT_WIKI
- * @uses FORMAT_MARKDOWN
- * @param string $text The text to be formatted. This is raw text originally from user input.
- * @param int $format Identifier of the text format to be used
- * (FORMAT_MOODLE, FORMAT_HTML, FORMAT_PLAIN, FORMAT_WIKI, FORMAT_MARKDOWN)
- * @return string
- */
- function format_text_email($text, $format) {
- switch ($format) {
- case FORMAT_PLAIN:
- return $text;
- break;
- case FORMAT_WIKI:
- $text = wiki_to_html($text);
- /// This expression turns links into something nice in a text format. (Russell Jungwirth)
- /// From: http://php.net/manual/en/function.eregi-replace.php and simplified
- $text = eregi_replace('(<a [^<]*href=["|\']?([^ "\']*)["|\']?[^>]*>([^<]*)</a>)','\\3 [ \\2 ]', $text);
- return strtr(strip_tags($text), array_flip(get_html_translation_table(HTML_ENTITIES)));
- break;
- case FORMAT_HTML:
- return html_to_text($text);
- break;
- case FORMAT_MOODLE:
- case FORMAT_MARKDOWN:
- default:
- $text = eregi_replace('(<a [^<]*href=["|\']?([^ "\']*)["|\']?[^>]*>([^<]*)</a>)','\\3 [ \\2 ]', $text);
- return strtr(strip_tags($text), array_flip(get_html_translation_table(HTML_ENTITIES)));
- break;
- }
- }
- /**
- * Given some text in HTML format, this function will pass it
- * through any filters that have been defined in $CFG->textfilterx
- * The variable defines a filepath to a file containing the
- * filter function. The file must contain a variable called
- * $textfilter_function which contains the name of the function
- * with $courseid and $text parameters
- *
- * @param string $text The text to be passed through format filters
- * @param int $courseid ?
- * @return string
- * @todo Finish documenting this function
- */
- function filter_text($text, $courseid=NULL) {
- global $CFG, $COURSE;
- if (empty($courseid)) {
- $courseid = $COURSE->id; // (copied from format_text)
- }
- if (!empty($CFG->textfilters)) {
- require_once($CFG->libdir.'/filterlib.php');
- $textfilters = explode(',', $CFG->textfilters);
- foreach ($textfilters as $textfilter) {
- if (is_readable($CFG->dirroot .'/'. $textfilter .'/filter.php')) {
- include_once($CFG->dirroot .'/'. $textfilter .'/filter.php');
- $functionname = basename($textfilter).'_filter';
- if (function_exists($functionname)) {
- $text = $functionname($courseid, $text);
- }
- }
- }
- }
- /// <nolink> tags removed for XHTML compatibility
- $text = str_replace('<nolink>', '', $text);
- $text = str_replace('</nolink>', '', $text);
- return $text;
- }
- /**
- * Given a string (short text) in HTML format, this function will pass it
- * through any filters that have been defined in $CFG->stringfilters
- * The variable defines a filepath to a file containing the
- * filter function. The file must contain a variable called
- * $textfilter_function which contains the name of the function
- * with $courseid and $text parameters
- *
- * @param string $string The text to be passed through format filters
- * @param int $courseid The id of a course
- * @return string
- */
- function filter_string($string, $courseid=NULL) {
- global $CFG, $COURSE;
- if (empty($CFG->textfilters)) { // All filters are disabled anyway so quit
- return $string;
- }
- if (empty($courseid)) {
- $courseid = $COURSE->id;
- }
- require_once($CFG->libdir.'/filterlib.php');
- if (isset($CFG->stringfilters)) { // We have a predefined list to use, great!
- if (empty($CFG->stringfilters)) { // but it's blank, so finish now
- return $string;
- }
- $stringfilters = explode(',', $CFG->stringfilters); // ..use the list we have
- } else { // Otherwise try to derive a list from textfilters
- if (strpos($CFG->textfilters, 'filter/multilang') !== false) { // Multilang is here
- $stringfilters = array('filter/multilang'); // Let's use just that
- $CFG->stringfilters = 'filter/multilang'; // Save it for next time through
- } else {
- $CFG->stringfilters = ''; // Save the result and return
- return $string;
- }
- }
- foreach ($stringfilters as $stringfilter) {
- if (is_readable($CFG->dirroot .'/'. $stringfilter .'/filter.php')) {
- include_once($CFG->dirroot .'/'. $stringfilter .'/filter.php');
- $functionname = basename($stringfilter).'_filter';
- if (function_exists($functionname)) {
- $string = $functionname($courseid, $string);
- }
- }
- }
- /// <nolink> tags removed for XHTML compatibility
- $string = str_replace('<nolink>', '', $string);
- $string = str_replace('</nolink>', '', $string);
- return $string;
- }
- /**
- * Is the text marked as trusted?
- *
- * @param string $text text to be searched for TRUSTTEXT marker
- * @return boolean
- */
- function trusttext_present($text) {
- if (strpos($text, TRUSTTEXT) !== FALSE) {
- return true;
- } else {
- return false;
- }
- }
- /**
- * This funtion MUST be called before the cleaning or any other
- * function that modifies the data! We do not know the origin of trusttext
- * in database, if it gets there in tweaked form we must not convert it
- * to supported form!!!
- *
- * Please be carefull not to use stripslashes on data from database
- * or twice stripslashes when processing data recieved from user.
- *
- * @param string $text text that may contain TRUSTTEXT marker
- * @return text without any TRUSTTEXT marker
- */
- function trusttext_strip($text) {
- global $CFG;
- while (true) { //removing nested TRUSTTEXT
- $orig = $text;
- $text = str_replace(TRUSTTEXT, '', $text);
- if (strcmp($orig, $text) === 0) {
- return $text;
- }
- }
- }
- /**
- * Mark text as trusted, such text may contain any HTML tags because the
- * normal text cleaning will be bypassed.
- * Please make sure that the text comes from trusted user before storing
- * it into database!
- */
- function trusttext_mark($text) {
- global $CFG;
- if (!empty($CFG->enabletrusttext) and (strpos($text, TRUSTTEXT) === FALSE)) {
- return TRUSTTEXT.$text;
- } else {
- return $text;
- }
- }
- function trusttext_after_edit(&$text, $context) {
- if (has_capability('moodle/site:trustcontent', $context)) {
- $text = trusttext_strip($text);
- $text = trusttext_mark($text);
- } else {
- $text = trusttext_strip($text);
- }
- }
- function trusttext_prepare_edit(&$text, &$format, $usehtmleditor, $context) {
- global $CFG;
- $options = new object();
- $options->smiley = false;
- $options->filter = false;
- if (!empty($CFG->enabletrusttext)
- and has_capability('moodle/site:trustcontent', $context)
- and trusttext_present($text)) {
- $options->noclean = true;
- } else {
- $options->noclean = false;
- }
- $text = trusttext_strip($text);
- if ($usehtmleditor) {
- $text = format_text($text, $format, $options);
- $format = FORMAT_HTML;
- } else if (!$options->noclean){
- $text = clean_text($text, $format);
- }
- }
- /**
- * Given raw text (eg typed in by a user), this function cleans it up
- * and removes any nasty tags that could mess up Moodle pages.
- *
- * @uses FORMAT_MOODLE
- * @uses FORMAT_PLAIN
- * @uses ALLOWED_TAGS
- * @param string $text The text to be cleaned
- * @param int $format Identifier of the text format to be used
- * (FORMAT_MOODLE, FORMAT_HTML, FORMAT_PLAIN, FORMAT_WIKI, FORMAT_MARKDOWN)
- * @return string The cleaned up text
- */
- function clean_text($text, $format=FORMAT_MOODLE) {
- global $ALLOWED_TAGS, $CFG;
- if (empty($text) or is_numeric($text)) {
- return (string)$text;
- }
- switch ($format) {
- case FORMAT_PLAIN:
- case FORMAT_MARKDOWN:
- return $text;
- default:
- if (!empty($CFG->enablehtmlpurifier)) {
- $text = purify_html($text);
- } else {
- /// Fix non standard entity notations
- $text = preg_replace('/(&#[0-9]+)(;?)/', "\\1;", $text);
- $text = preg_replace('/(&#x[0-9a-fA-F]+)(;?)/', "\\1;", $text);
- /// Remove tags that are not allowed
- $text = strip_tags($text, $ALLOWED_TAGS);
- /// Clean up embedded scripts and , using kses
- $text = cleanAttributes($text);
- /// Again remove tags that are not allowed
- $text = strip_tags($text, $ALLOWED_TAGS);
- }
- /// Remove potential script events - some extra protection for undiscovered bugs in our code
- $text = eregi_replace("([^a-z])language([[:space:]]*)=", "\\1Xlanguage=", $text);
- $text = eregi_replace("([^a-z])on([a-z]+)([[:space:]]*)=", "\\1Xon\\2=", $text);
- return $text;
- }
- }
- /**
- * KSES replacement cleaning function - uses HTML Purifier.
- */
- function purify_html($text) {
- global $CFG;
- // this can not be done only once because we sometimes need to reset the cache
- $cachedir = $CFG->dataroot.'/cache/htmlpurifier/';
- $status = check_dir_exists($cachedir, true, true);
- static $purifier = false;
- if ($purifier === false) {
- require_once $CFG->libdir.'/htmlpurifier/HTMLPurifier.auto.php';
- $config = HTMLPurifier_Config::createDefault();
- $config->set('Core', 'AcceptFullDocuments', false);
- $config->set('Core', 'Encoding', 'UTF-8');
- $config->set('HTML', 'Doctype', 'XHTML 1.0 Transitional');
- $config->set('Cache', 'SerializerPath', $cachedir);
- $config->set('URI', 'AllowedSchemes', array('http'=>1, 'https'=>1, 'ftp'=>1, 'irc'=>1, 'nntp'=>1, 'news'=>1, 'rtsp'=>1, 'teamspeak'=>1, 'gopher'=>1, 'mms'=>1));
- $config->set('Attr', 'AllowedFrameTargets', array('_blank'));
- $purifier = new HTMLPurifier($config);
- }
- return $purifier->purify($text);
- }
- /**
- * This function takes a string and examines it for HTML tags.
- * If tags are detected it passes the string to a helper function {@link cleanAttributes2()}
- * which checks for attributes and filters them for malicious content
- * 17/08/2004 :: Eamon DOT Costello AT dcu DOT ie
- *
- * @param string $str The string to be examined for html tags
- * @return string
- */
- function cleanAttributes($str){
- $result = preg_replace_callback(
- '%(<[^>]*(>|$)|>)%m', #search for html tags
- "cleanAttributes2",
- $str
- );
- return $result;
- }
- /**
- * This function takes a string with an html tag and strips out any unallowed
- * protocols e.g. javascript:
- * It calls ancillary functions in kses which are prefixed by kses
- * 17/08/2004 :: Eamon DOT Costello AT dcu DOT ie
- *
- * @param array $htmlArray An array from {@link cleanAttributes()}, containing in its 1st
- * element the html to be cleared
- * @return string
- */
- function cleanAttributes2($htmlArray){
- global $CFG, $ALLOWED_PROTOCOLS;
- require_once($CFG->libdir .'/kses.php');
- $htmlTag = $htmlArray[1];
- if (substr($htmlTag, 0, 1) != '<') {
- return '>'; //a single character ">" detected
- }
- if (!preg_match('%^<\s*(/\s*)?([a-zA-Z0-9]+)([^>]*)>?$%', $htmlTag, $matches)) {
- return ''; // It's seriously malformed
- }
- $slash = trim($matches[1]); //trailing xhtml slash
- $elem = $matches[2]; //the element name
- $attrlist = $matches[3]; // the list of attributes as a string
- $attrArray = kses_hair($attrlist, $ALLOWED_PROTOCOLS);
- $attStr = '';
- foreach ($attrArray as $arreach) {
- $arreach['name'] = strtolower($arreach['name']);
- if ($arreach['name'] == 'style') {
- $value = $arreach['value'];
- while (true) {
- $prevvalue = $value;
- $value = kses_no_null($value);
- $value = preg_replace("/\/\*.*\*\//Us", '', $value);
- $value = kses_decode_entities($value);
- $value = preg_replace('/(&#[0-9]+)(;?)/', "\\1;", $value);
- $value = preg_replace('/(&#x[0-9a-fA-F]+)(;?)/', "\\1;", $value);
- if ($value === $prevvalue) {
- $arreach['value'] = $value;
- break;
- }
- }
- $arreach['value'] = preg_replace("/j\s*a\s*v\s*a\s*s\s*c\s*r\s*i\s*p\s*t/i", "Xjavascript", $arreach['value']);
- $arreach['value'] = preg_replace("/e\s*x\s*p\s*r\s*e\s*s\s*s\s*i\s*o\s*n/i", "Xexpression", $arreach['value']);
- $arreach['value'] = preg_replace("/b\s*i\s*n\s*d\s*i\s*n\s*g/i", "Xbinding", $arreach['value']);
- } else if ($arreach['name'] == 'href') {
- //Adobe Acrobat Reader XSS protection
- $arreach['value'] = preg_replace('/(\.(pdf|fdf|xfdf|xdp|xfd)[^#]*)#.*$/i', '$1', $arreach['value']);
- }
- $attStr .= ' '.$arreach['name'].'="'.$arreach['value'].'"';
- }
- $xhtml_slash = '';
- if (preg_match('%/\s*$%', $attrlist)) {
- $xhtml_slash = ' /';
- }
- return '<'. $slash . $elem . $attStr . $xhtml_slash .'>';
- }
- /**
- * Replaces all known smileys in the text with image equivalents
- *
- * @uses $CFG
- * @param string $text Passed by reference. The string to search for smily strings.
- * @return string
- */
- function replace_smilies(&$text) {
- global $CFG;
- if (empty($CFG->emoticons)) { /// No emoticons defined, nothing to process here
- return;
- }
- $lang = current_language();
- $emoticonstring = $CFG->emoticons;
- static $e = array();
- static $img = array();
- static $emoticons = null;
- if (is_null($emoticons)) {
- $emoticons = array();
- if ($emoticonstring) {
- $items = explode('{;}', $CFG->emoticons);
- foreach ($items as $item) {
- $item = explode('{:}', $item);
- $emoticons[$item[0]] = $item[1];
- }
- }
- }
- if (empty($img[$lang])) { /// After the first time this is not run again
- $e[$lang] = array();
- $img[$lang] = array();
- foreach ($emoticons as $emoticon => $image){
- $alttext = get_string($image, 'pix');
- $alttext = preg_replace('/^\[\[(.*)\]\]$/', '$1', $alttext); /// Clean alttext in case there isn't lang string for it.
- $e[$lang][] = $emoticon;
- $img[$lang][] = '<img alt="'. $alttext .'" width="15" height="15" src="'. $CFG->pixpath .'/s/'. $image .'.gif" />';
- }
- }
- // Exclude from transformations all the code inside <script> tags
- // Needed to solve Bug 1185. Thanks to jouse 2001 detecting it. :-)
- // Based on code from glossary fiter by Williams Castillo.
- // - Eloy
- // Detect all the <script> zones to take out
- $excludes = array();
- preg_match_all('/<script language(.+?)<\/script>/is',$text,$list_of_excludes);
- // Take out all the <script> zones from text
- foreach (array_unique($list_of_excludes[0]) as $key=>$value) {
- $excludes['<+'.$key.'+>'] = $value;
- }
- if ($excludes) {
- $text = str_replace($excludes,array_keys($excludes),$text);
- }
- /// this is the meat of the code - this is run every time
- $text = str_replace($e[$lang], $img[$lang], $text);
- // Recover all the <script> zones to text
- if ($excludes) {
- $text = str_replace(array_keys($excludes),$excludes,$text);
- }
- }
- /**
- * Given plain text, makes it into HTML as nicely as possible.
- * May contain HTML tags already
- *
- * @uses $CFG
- * @param string $text The string to convert.
- * @param boolean $smiley Convert any smiley characters to smiley images?
- * @param boolean $para If true then the returned string will be wrapped in paragraph tags
- * @param boolean $newlines If true then lines newline breaks will be converted to HTML newline breaks.
- * @return string
- */
- function text_to_html($text, $smiley=true, $para=true, $newlines=true) {
- ///
- global $CFG;
- /// Remove any whitespace that may be between HTML tags
- $text = eregi_replace(">([[:space:]]+)<", "><", $text);
- /// Remove any returns that precede or follow HTML tags
- $text = eregi_replace("([\n\r])<", " <", $text);
- $text = eregi_replace(">([\n\r])", "> ", $text);
- convert_urls_into_links($text);
- /// Make returns into HTML newlines.
- if ($newlines) {
- $text = nl2br($text);
- }
- /// Turn smileys into images.
- if ($smiley) {
- replace_smilies($text);
- }
- /// Wrap the whole thing in a paragraph tag if required
- if ($para) {
- return '<p>'.$text.'</p>';
- } else {
- return $text;
- }
- }
- /**
- * Given Markdown formatted text, make it into XHTML using external function
- *
- * @uses $CFG
- * @param string $text The markdown formatted text to be converted.
- * @return string Converted text
- */
- function markdown_to_html($text) {
- global $CFG;
- require_once($CFG->libdir .'/markdown.php');
- return Markdown($text);
- }
- /**
- * Given HTML text, make it into plain text using external function
- *
- * @uses $CFG
- * @param string $html The text to be converted.
- * @return string
- */
- function html_to_text($html) {
- global $CFG;
- require_once($CFG->libdir .'/html2text.php');
- $h2t = new html2text($html);
- $result = $h2t->get_text();
- return $result;
- }
- /**
- * Given some text this function converts any URLs it finds into HTML links
- *
- * @param string $text Passed in by reference. The string to be searched for urls.
- */
- function convert_urls_into_links(&$text) {
- /// Make lone URLs into links. eg http://moodle.com/
- $text = eregi_replace("([[:space:]]|^|\(|\[)([[:alnum:]]+)://([^[:space:]]*)([[:alnum:]#?/&=])",
- "\\1<a href=\"\\2://\\3\\4\" target=\"_blank\">\\2://\\3\\4</a>", $text);
- /// eg www.moodle.com
- $text = eregi_replace("([[:space:]]|^|\(|\[)www\.([^[:space:]]*)([[:alnum:]#?/&=])",
- "\\1<a href=\"http://www.\\2\\3\" target=\"_blank\">www.\\2\\3</a>", $text);
- }
- /**
- * This function will highlight search words in a given string
- * It cares about HTML and will not ruin links. It's best to use
- * this function after performing any conversions to HTML.
- *
- * @param string $needle The search string. Syntax like "word1 +word2 -word3" is dealt with correctly.
- * @param string $haystack The string (HTML) within which to highlight the search terms.
- * @param boolean $matchcase whether to do case-sensitive. Default case-insensitive.
- * @param string $prefix the string to put before each search term found.
- * @param string $suffix the string to put after each search term found.
- * @return string The highlighted HTML.
- */
- function highlight($needle, $haystack, $matchcase = false,
- $prefix = '<span class="highlight">', $suffix = '</span>') {
- /// Quick bail-out in trivial cases.
- if (empty($needle) or empty($haystack)) {
- return $haystack;
- }
- /// Break up the search term into words, discard any -words and build a regexp.
- $words = preg_split('/ +/', trim($needle));
- foreach ($words as $index => $word) {
- if (strpos($word, '-') === 0) {
- unset($words[$index]);
- } else if (strpos($word, '+') === 0) {
- $words[$index] = '\b' . preg_quote(ltrim($word, '+'), '/') . '\b'; // Match only as a complete word.
- } else {
- $words[$index] = preg_quote($word, '/');
- }
- }
- $regexp = '/(' . implode('|', $words) . ')/u'; // u is do UTF-8 matching.
- if (!$matchcase) {
- $regexp .= 'i';
- }
- /// Another chance to bail-out if $search was only -words
- if (empty($words)) {
- return $haystack;
- }
- /// Find all the HTML tags in the input, and store them in a placeholders array.
- $placeholders = array();
- $matches = array();
- preg_match_all('/<[^>]*>/', $haystack, $matches);
- foreach (array_unique($matches[0]) as $key => $htmltag) {
- $placeholders['<|' . $key . '|>'] = $htmltag;
- }
- /// In $hastack, replace each HTML tag with the corresponding placeholder.
- $haystack = str_replace($placeholders, array_keys($placeholders), $haystack);
- /// In the resulting string, Do the highlighting.
- $haystack = preg_replace($regexp, $prefix . '$1' . $suffix, $haystack);
- /// Turn the placeholders back into HTML tags.
- $haystack = str_replace(array_keys($placeholders), $placeholders, $haystack);
- return $haystack;
- }
- /**
- * This function will highlight instances of $needle in $haystack
- * It's faster that the above function and doesn't care about
- * HTML or anything.
- *
- * @param string $needle The string to search for
- * @param string $haystack The string to search for $needle in
- * @return string
- */
- function highlightfast($needle, $haystack) {
- if (empty($needle) or empty($haystack)) {
- return $haystack;
- }
- $parts = explode(moodle_strtolower($needle), moodle_strtolower($haystack));
- if (count($parts) === 1) {
- return $haystack;
- }
- $pos = 0;
- foreach ($parts as $key => $part) {
- $parts[$key] = substr($haystack, $pos, strlen($part));
- $pos += strlen($part);
- $parts[$key] .= '<span class="highlight">'.substr($haystack, $pos, strlen($needle)).'</span>';
- $pos += strlen($needle);
- }
- return str_replace('<span class="highlight"></span>', '', join('', $parts));
- }
- /**
- * Return a string containing 'lang', xml:lang and optionally 'dir' HTML attributes.
- * Internationalisation, for print_header and backup/restorelib.
- * @param $dir Default false.
- * @return string Attributes.
- */
- function get_html_lang($dir = false) {
- $direction = '';
- if ($dir) {
- if (get_string('thisdirection') == 'rtl') {
- $direction = ' dir="rtl"';
- } else {
- $direction = ' dir="ltr"';
- }
- }
- //Accessibility: added the 'lang' attribute to $direction, used in theme <html> tag.
- $language = str_replace('_', '-', str_replace('_utf8', '', current_language()));
- @header('Content-Language: '.$language);
- return ($direction.' lang="'.$language.'" xml:lang="'.$language.'"');
- }
- /**
- * Return the markup for the destination of the 'Skip to main content' links.
- * Accessibility improvement for keyboard-only users.
- * Used in course formats, /index.php and /course/index.php
- * @return string HTML element.
- */
- function skip_main_destination() {
- return '<span id="maincontent"></span>';
- }
- /// STANDARD WEB PAGE PARTS ///////////////////////////////////////////////////
- /**
- * Print a standard header
- *
- * @uses $USER
- * @uses $CFG
- * @uses $SESSION
- * @param string $title Appears at the top of the window
- * @param string $heading Appears at the top of the page
- * @param array $navigation Array of $navlinks arrays (keys: name, link, type) for use as breadcrumbs links
- * @param string $focus Indicates form element to get cursor focus on load eg inputform.password
- * @param string $meta Meta tags to be added to the header
- * @param boolean $cache Should this page be cacheable?
- * @param string $button HTML code for a button (usually for module editing)
- * @param string $menu HTML code for a popup menu
- * @param boolean $usexml use XML for this page
- * @param string $bodytags This text will be included verbatim in the <body> tag (useful for onload() etc)
- * @param bool $return If true, return the visible elements of the header instead of echoing them.
- */
- function print_header ($title='', $heading='', $navigation='', $focus='',
- $meta='', $cache=true, $button=' ', $menu='',
- $usexml=false, $bodytags='', $return=false) {
- global $USER, $CFG, $THEME, $SESSION, $ME, $SITE, $COURSE;
- if (gettype($navigation) == 'string' && strlen($navigation) != 0 && $navigation != 'home') {
- debugging("print_header() was sent a string as 3rd ($navigation) parameter. "
- . "This is deprecated in favour of an array built by build_navigation(). Please upgrade your code.", DEBUG_DEVELOPER);
- }
- $heading = format_string($heading); // Fix for MDL-8582
- /// This makes sure that the header is never repeated twice on a page
- if (defined('HEADER_PRINTED')) {
- debugging('print_header() was called more than once - this should not happen. Please check the code for this page closely. Note: error() and redirect() are now safe to call after print_header().');
- return;
- }
- define('HEADER_PRINTED', 'true');
- /// Add the required stylesheets
- $stylesheetshtml = '';
- foreach ($CFG->stylesheets as $stylesheet) {
- $stylesheetshtml .= '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'" />'."\n";
- }
- $meta = $stylesheetshtml.$meta;
- /// Add the meta page from the themes if any were requested
- $metapage = '';
- if (!isset($THEME->standardmetainclude) || $THEME->standardmetainclude) {
- ob_start();
- include_once($CFG->dirroot.'/theme/standard/meta.php');
- $metapage .= ob_get_contents();
- ob_end_clean();
- }
- if ($THEME->parent && (!isset($THEME->parentmetainclude) || $THEME->parentmetainclude)) {
- if (file_exists($CFG->dirroot.'/theme/'.$THEME->parent.'/meta.php')) {
- ob_start();
- include_once($CFG->dirroot.'/theme/'.$THEME->parent.'/meta.php');
- $metapage .= ob_get_contents();
- ob_end_clean();
- }
- }
- if (!isset($THEME->metainclude) || $THEME->metainclude) {
- if (file_exists($CFG->dirroot.'/theme/'.current_theme().'/meta.php')) {
- ob_start();
- include_once($CFG->dirroot.'/theme/'.current_theme().'/meta.php');
- $metapage .= ob_get_contents();
- ob_end_clean();
- }
- }
- $meta = $meta."\n".$metapage;
- $meta .= "\n".require_js('',1);
- /// Set up some navigation variables
- if (is_newnav($navigation)){
- $home = false;
- } else {
- if ($navigation == 'home') {
- $home = true;
- $navigation = '';
- } else {
- $home = false;
- }
- }
- /// This is another ugly hack to make navigation elements available to print_footer later
- $THEME->title = $title;
- $THEME->heading = $heading;
- $THEME->navigation = $navigation;
- $THEME->button = $button;
- $THEME->menu = $menu;
- $navmenulist = isset($THEME->navmenulist) ? $THEME->navmenulist : '';
- if ($button == '') {
- $button = ' ';
- }
- if (file_exists($CFG->dataroot.'/'.SITEID.'/maintenance.html')) {
- $button = '<a href="'.$CFG->wwwroot.'/'.$CFG->admin.'/maintenance.php">'.get_string('maintenancemode', 'admin').'</a> '.$button;
- if(!empty($title)) {
- $title .= ' - ';
- }
- $title .= get_string('maintenancemode', 'admin');
- }
- if (!$menu and $navigation) {
- if (empty($CFG->loginhttps)) {
- $wwwroot = $CFG->wwwroot;
- } else {
- $wwwroot = str_replace('http:','https:',$CFG->wwwroot);
- }
- $menu = user_login_string($COURSE);
- }
- if (isset($SESSION->justloggedin)) {
- unset($SESSION->justloggedin);
- if (!empty($CFG->displayloginfailures)) {
- if (!empty($USER->username) and $USER->username != 'guest') {
- if ($count = count_login_failures($CFG->displayloginfailures, $USER->username, $USER->lastlogin)) {
- $menu .= ' <font size="1">';
- if (empty($count->accounts)) {
- $menu .= get_string('failedloginattempts', '', $count);
- } else {
- $menu .= get_string('failedloginattemptsall', '', $count);
- }
- if (has_capability('coursereport/log:view', get_context_instance(CONTEXT_SYSTEM))) {
- $menu .= ' (<a href="'.$CFG->wwwroot.'/course/report/log/index.php'.
- '?chooselog=1&id=1&modid=site_errors">'.get_string('logs').'</a>)';
- }
- $menu .= '</font>';
- }
- }
- }
- }
- $meta = '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />' .
- "\n" . $meta . "\n";
- if (!$usexml) {
- @header('Content-Type: text/html; charset=utf-8');
- }
- @header('Content-Script-Type: text/javascript');
- @header('Content-Style-Type: text/css');
- //Accessibility: added the 'lang' attribute to $direction, used in theme <html> tag.
- $direction = get_html_lang($dir=true);
- if ($cache) { // Allow caching on "back" (but not on normal clicks)
- @header('Cache-Control: private, pre-check=0, post-check=0, max-age=0');
- @header('Pragma: no-cache');
- @header('Expires: ');
- } else { // Do everything we can to always prevent clients and proxies caching
- @header('Cache-Control: no-store, no-cache, must-revalidate');
- @header('Cache-Control: post-check=0, pre-check=0', false);
- @header('Pragma: no-cache');
- @header('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
- @header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
- $meta .= "\n<meta http-equiv=\"pragma\" content=\"no-cache\" />";
- $meta .= "\n<meta http-equiv=\"expires\" content=\"0\" />";
- }
- @header('Accept-Ranges: none');
- $currentlanguage = current_language();
- if (empty($usexml)) {
- $direction = ' xmlns="http://www.w3.org/1999/xhtml"'. $direction; // See debug_header
- } else {
- $mathplayer = preg_match("/MathPlayer/i", $_SERVER['HTTP_USER_AGENT']);
- if(!$mathplayer) {
- header('Content-Type: application/xhtml+xml');
- }
- echo '<?xml version="1.0" ?>'."\n";
- if (!empty($CFG->xml_stylesheets)) {
- $stylesheets = explode(';', $CFG->xml_stylesheets);
- foreach ($stylesheets as $stylesheet) {
- echo '<?xml-stylesheet type="text/xsl" href="'. $CFG->wwwroot .'/'. $stylesheet .'" ?>' . "\n";
- }
- }
- echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1';
- if (!empty($CFG->xml_doctype_extra)) {
- echo ' plus '. $CFG->xml_doctype_extra;
- }
- echo '//' . strtoupper($currentlanguage) . '" "'. $CFG->xml_dtd .'">'."\n";
- $direction = " xmlns=\"http://www.w3.org/1999/xhtml\"
- xmlns:math=\"http://www.w3.org/1998/Math/MathML\"
- xmlns:xlink=\"http://www.w3.org/1999/xlink\"
- $direction";
- if($mathplayer) {
- $meta .= '<object id="mathplayer" classid="clsid:32F66A20-7614-11D4-BD11-00104BD3F987">' . "\n";
- $meta .= '<!--comment required to prevent this becoming an empty tag-->'."\n";
- $meta .= '</object>'."\n";
- $meta .= '<?import namespace="math" implementation="#mathplayer" ?>' . "\n";
- }
- }
- // Clean up the title
- $title = format_string($title); // fix for MDL-8582
- $title = str_replace('"', '"', $title);
- // Create class and id for this page
- page_id_and_class($pageid, $pageclass);
- $pageclass .= ' course-'.$COURSE->id;
- if (!isloggedin()) {
- $pageclass .= ' notloggedin';
- }
- if (!empty($USER->editing)) {
- $pageclass .= ' editing';
- }
- if (!empty($CFG->blocksdrag)) {
- $pageclass .= ' drag';
- }
- $pageclass .= ' dir-'.get_string('thisdirection');
- $pageclass .= ' lang-'.$currentlanguage;
- $bodytags .= ' class="'.$pageclass.'" id="'.$pageid.'"';
- ob_start();
- include($CFG->header);
- $output = ob_get_contents();
- ob_end_clean();
- // container debugging info
- $THEME->open_header_containers = open_containers();
- // Skip to main content, see skip_main_destination().
- if ($pageid=='course-view' or $pageid=='site-index' or $pageid=='course-index') {
- $skiplink = '<a class="skip" href="#maincontent">'.get_string('tocontent', 'access').'</a>';
- if (! preg_match('/(.*<div[^>]+id="page"[^>]*>)(.*)/s', $output, $matches)) {
- preg_match('/(.*<body.*?>)(.*)/s', $output, $matches);
- }
- $output = $matches[1]."\n". $skiplink .$matches[2];
- }
- $output = force_strict_header($output);
- if (!empty($CFG->messaging)) {
- $output .= message_popup_window();
- }
- // Add in any extra JavaScript libraries that occurred during the header
- $output .= require_js('', 2);
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Used to include JavaScript libraries.
- *
- * When the $lib parameter is given, the function will ensure that the
- * named library is loaded onto the page - either in the HTML <head>,
- * just after the header, or at an arbitrary later point in the page,
- * depending on where this function is called.
- *
- * Libraries will not be included more than once, so this works like
- * require_once in PHP.
- *
- * There are two special-case calls to this function which are both used only
- * by weblib print_header:
- * $extracthtml = 1: this is used before printing the header.
- * It returns the script tag code that should go inside the <head>.
- * $extracthtml = 2: this is used after printing the header and handles any
- * require_js calls that occurred within the header itself.
- *
- * @param mixed $lib - string or array of strings
- * string(s) should be the shortname for the library or the
- * full path to the library file.
- * @param int $extracthtml Do not set this parameter usually (leave 0), only
- * weblib should set this to 1 or 2 in print_header function.
- * @return mixed No return value, except when using $extracthtml it returns the html code.
- */
- function require_js($lib,$extracthtml=0) {
- global $CFG;
- static $loadlibs = array();
- static $state = REQUIREJS_BEFOREHEADER;
- static $latecode = '';
- if (!empty($lib)) {
- // Add the lib to the list of libs to be loaded, if it isn't already
- // in the list.
- if (is_array($lib)) {
- foreach($lib as $singlelib) {
- require_js($singlelib);
- }
- } else {
- $libpath = ajax_get_lib($lib);
- if (array_search($libpath, $loadlibs) === false) {
- $loadlibs[] = $libpath;
- // For state other than 0 we need to take action as well as just
- // adding it to loadlibs
- if($state != REQUIREJS_BEFOREHEADER) {
- // Get the script statement for this library
- $scriptstatement=get_require_js_code(array($libpath));
- if($state == REQUIREJS_AFTERHEADER) {
- // After the header, print it immediately
- print $scriptstatement;
- } else {
- // Haven't finished the header yet. Add it after the
- // header
- $latecode .= $scriptstatement;
- }
- }
- }
- }
- } else if($extracthtml==1) {
- if($state !== REQUIREJS_BEFOREHEADER) {
- debugging('Incorrect state in require_js (expected BEFOREHEADER): be careful not to call with empty $lib (except in print_header)');
- } else {
- $state = REQUIREJS_INHEADER;
- }
- return get_require_js_code($loadlibs);
- } else if($extracthtml==2) {
- if($state !== REQUIREJS_INHEADER) {
- debugging('Incorrect state in require_js (expected INHEADER): be careful not to call with empty $lib (except in print_header)');
- return '';
- } else {
- $state = REQUIREJS_AFTERHEADER;
- return $latecode;
- }
- } else {
- debugging('Unexpected value for $extracthtml');
- }
- }
- /**
- * Should not be called directly - use require_js. This function obtains the code
- * (script tags) needed to include JavaScript libraries.
- * @param array $loadlibs Array of library files to include
- * @return string HTML code to include them
- */
- function get_require_js_code($loadlibs) {
- global $CFG;
- // Return the html needed to load the JavaScript files defined in
- // our list of libs to be loaded.
- $output = '';
- foreach ($loadlibs as $loadlib) {
- $output .= '<script type="text/javascript" ';
- $output .= " src=\"$loadlib\"></script>\n";
- if ($loadlib == $CFG->wwwroot.'/lib/yui/logger/logger-min.js') {
- // Special case, we need the CSS too.
- $output .= '<link type="text/css" rel="stylesheet" ';
- $output .= " href=\"{$CFG->wwwroot}/lib/yui/logger/assets/logger.css\" />\n";
- }
- }
- return $output;
- }
- /**
- * Debugging aid: serve page as 'application/xhtml+xml' where possible,
- * and substitute the XHTML strict document type.
- * Note, requires the 'xmlns' fix in function print_header above.
- * See: http://tracker.moodle.org/browse/MDL-7883
- * TODO:
- */
- function force_strict_header($output) {
- global $CFG;
- $strict = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
- $xsl = '/lib/xhtml.xsl';
- if (!headers_sent() && !empty($CFG->xmlstrictheaders)) { // With xml strict headers, the browser will barf
- $ctype = 'Content-Type: ';
- $prolog= "<?xml version='1.0' encoding='utf-8'?>\n";
- if (isset($_SERVER['HTTP_ACCEPT'])
- && false !== strpos($_SERVER['HTTP_ACCEPT'], 'application/xhtml+xml')) {
- //|| false !== strpos($_SERVER['HTTP_USER_AGENT'], 'Safari') //Safari "Entity 'copy' not defined".
- // Firefox et al.
- $ctype .= 'application/xhtml+xml';
- $prolog .= "<!--\n DEBUG: $ctype \n-->\n";
- } else if (file_exists($CFG->dirroot.$xsl)
- && preg_match('/MSIE.*Windows NT/', $_SERVER['HTTP_USER_AGENT'])) {
- // XSL hack for IE 5+ on Windows.
- //$www_xsl = preg_replace('/(http:\/\/.+?\/).*/', '', $CFG->wwwroot) .$xsl;
- $www_xsl = $CFG->wwwroot .$xsl;
- $ctype .= 'application/xml';
- $prolog .= "<?xml-stylesheet type='text/xsl' href='$www_xsl'?>\n";
- $prolog .= "<!--\n DEBUG: $ctype \n-->\n";
- } else {
- //ELSE: Mac/IE, old/non-XML browsers.
- $ctype .= 'text/html';
- $prolog = '';
- }
- @header($ctype.'; charset=utf-8');
- $output = $prolog . $output;
- // Test parser error-handling.
- if (isset($_GET['error'])) {
- $output .= "__ TEST: XML well-formed error < __\n";
- }
- }
- $output = preg_replace('/(<!DOCTYPE.+?>)/s', $strict, $output); // Always change the DOCTYPE to Strict 1.0
- return $output;
- }
- /**
- * This version of print_header is simpler because the course name does not have to be
- * provided explicitly in the strings. It can be used on the site page as in courses
- * Eventually all print_header could be replaced by print_header_simple
- *
- * @param string $title Appears at the top of the window
- * @param string $heading Appears at the top of the page
- * @param string $navigation Premade navigation string (for use as breadcrumbs links)
- * @param string $focus Indicates form element to get cursor focus on load eg inputform.password
- * @param string $meta Meta tags to be added to the header
- * @param boolean $cache Should this page be cacheable?
- * @param string $button HTML code for a button (usually for module editing)
- * @param string $menu HTML code for a popup menu
- * @param boolean $usexml use XML for this page
- * @param string $bodytags This text will be included verbatim in the <body> tag (useful for onload() etc)
- * @param bool $return If true, return the visible elements of the header instead of echoing them.
- */
- function print_header_simple($title='', $heading='', $navigation='', $focus='', $meta='',
- $cache=true, $button=' ', $menu='', $usexml=false, $bodytags='', $return=false) {
- global $COURSE, $CFG;
- // if we have no navigation specified, build it
- if( empty($navigation) ){
- $navigation = build_navigation('');
- }
- // If old style nav prepend course short name otherwise leave $navigation object alone
- if (!is_newnav($navigation)) {
- if ($COURSE->id != SITEID) {
- $shortname = '<a href="'.$CFG->wwwroot.'/course/view.php?id='. $COURSE->id .'">'. $COURSE->shortname .'</a> ->';
- $navigation = $shortname.' '.$navigation;
- }
- }
- $output = print_header($COURSE->shortname .': '. $title, $COURSE->fullname .' '. $heading, $navigation, $focus, $meta,
- $cache, $button, $menu, $usexml, $bodytags, true);
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Can provide a course object to make the footer contain a link to
- * to the course home page, otherwise the link will go to the site home
- * @uses $USER
- * @param mixed $course course object, used for course link button or
- * 'none' means no user link, only docs link
- * 'empty' means nothing printed in footer
- * 'home' special frontpage footer
- * @param object $usercourse course used in user link
- * @param boolean $return output as string
- * @return mixed string or void
- */
- function print_footer($course=NULL, $usercourse=NULL, $return=false) {
- global $USER, $CFG, $THEME, $COURSE;
- if (defined('ADMIN_EXT_HEADER_PRINTED') and !defined('ADMIN_EXT_FOOTER_PRINTED')) {
- admin_externalpage_print_footer();
- return;
- }
- /// Course links or special footer
- if ($course) {
- if ($course === 'empty') {
- // special hack - sometimes we do not want even the docs link in footer
- $output = '';
- if (!empty($THEME->open_header_containers)) {
- for ($i=0; $i<$THEME->open_header_containers; $i++) {
- $output .= print_container_end_all(); // containers opened from header
- }
- } else {
- //1.8 theme compatibility
- $output .= "\n</div>"; // content div
- }
- $output .= "\n</div>\n</body>\n</html>"; // close page div started in header
- if ($return) {
- return $output;
- } else {
- echo $output;
- return;
- }
- } else if ($course === 'none') { // Don't print any links etc
- $homelink = '';
- $loggedinas = '';
- $home = false;
- } else if ($course === 'home') { // special case for site home page - please do not remove
- $course = get_site();
- $homelink = '<div class="sitelink">'.
- '<a title="Moodle '. $CFG->release .'" href="http://moodle.org/">'.
- '<img style="width:100px;height:30px" src="pix/moodlelogo.gif" alt="moodlelogo" /></a></div>';
- $home = true;
- } else {
- $homelink = '<div class="homelink"><a '.$CFG->frametarget.' href="'.$CFG->wwwroot.
- '/course/view.php?id='.$course->id.'">'.format_string($course->shortname).'</a></div>';
- $home = false;
- }
- } else {
- $course = get_site(); // Set course as site course by default
- $homelink = '<div class="homelink"><a '.$CFG->frametarget.' href="'.$CFG->wwwroot.'/">'.get_string('home').'</a></div>';
- $home = false;
- }
- /// Set up some other navigation links (passed from print_header by ugly hack)
- $menu = isset($THEME->menu) ? str_replace('navmenu', 'navmenufooter', $THEME->menu) : '';
- $title = isset($THEME->title) ? $THEME->title : '';
- $button = isset($THEME->button) ? $THEME->button : '';
- $heading = isset($THEME->heading) ? $THEME->heading : '';
- $navigation = isset($THEME->navigation) ? $THEME->navigation : '';
- $navmenulist = isset($THEME->navmenulist) ? $THEME->navmenulist : '';
- /// Set the user link if necessary
- if (!$usercourse and is_object($course)) {
- $usercourse = $course;
- }
- if (!isset($loggedinas)) {
- $loggedinas = user_login_string($usercourse, $USER);
- }
- if ($loggedinas == $menu) {
- $menu = '';
- }
- /// there should be exactly the same number of open containers as after the header
- if ($THEME->open_header_containers != open_containers()) {
- debugging('Unexpected number of open containers: '.open_containers().', expecting '.$THEME->open_header_containers, DEBUG_DEVELOPER);
- }
- /// Provide some performance info if required
- $performanceinfo = '';
- if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
- $perf = get_performance_info();
- if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
- error_log("PERF: " . $perf['txt']);
- }
- if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
- $performanceinfo = $perf['html'];
- }
- }
- /// Include the actual footer file
- ob_start();
- include($CFG->footer);
- $output = ob_get_contents();
- ob_end_clean();
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Returns the name of the current theme
- *
- * @uses $CFG
- * @uses $USER
- * @uses $SESSION
- * @uses $COURSE
- * @uses $FULLME
- * @return string
- */
- function current_theme() {
- global $CFG, $USER, $SESSION, $COURSE, $FULLME;
- if (empty($CFG->themeorder)) {
- $themeorder = array('page', 'course', 'category', 'session', 'user', 'site');
- } else {
- $themeorder = $CFG->themeorder;
- }
- if (isloggedin() and isset($CFG->mnet_localhost_id) and $USER->mnethostid != $CFG->mnet_localhost_id) {
- require_once($CFG->dirroot.'/mnet/peer.php');
- $mnet_peer = new mnet_peer();
- $mnet_peer->set_id($USER->mnethostid);
- }
- $theme = '';
- foreach ($themeorder as $themetype) {
- if (!empty($theme)) continue;
- switch ($themetype) {
- case 'page': // Page theme is for special page-only themes set by code
- if (!empty($CFG->pagetheme)) {
- $theme = $CFG->pagetheme;
- }
- break;
- case 'course':
- if (!empty($CFG->allowcoursethemes) and !empty($COURSE->theme)) {
- $theme = $COURSE->theme;
- }
- break;
- case 'category':
- if (!empty($CFG->allowcategorythemes)) {
- /// Nasty hack to check if we're in a category page
- if (stripos($FULLME, 'course/category.php') !== false) {
- global $id;
- if (!empty($id)) {
- $theme = current_category_theme($id);
- }
- /// Otherwise check if we're in a course that has a category theme set
- } else if (!empty($COURSE->category)) {
- $theme = current_category_theme($COURSE->category);
- }
- }
- break;
- case 'session':
- if (!empty($SESSION->theme)) {
- $theme = $SESSION->theme;
- }
- break;
- case 'user':
- if (!empty($CFG->allowuserthemes) and !empty($USER->theme)) {
- if (isloggedin() and $USER->mnethostid != $CFG->mnet_localhost_id && $mnet_peer->force_theme == 1 && $mnet_peer->theme != '') {
- $theme = $mnet_peer->theme;
- } else {
- $theme = $USER->theme;
- }
- }
- break;
- case 'site':
- if (isloggedin() and isset($CFG->mnet_localhost_id) and $USER->mnethostid != $CFG->mnet_localhost_id && $mnet_peer->force_theme == 1 && $mnet_peer->theme != '') {
- $theme = $mnet_peer->theme;
- } else {
- $theme = $CFG->theme;
- }
- break;
- default:
- /// do nothing
- }
- }
- /// A final check in case 'site' was not included in $CFG->themeorder
- if (empty($theme)) {
- $theme = $CFG->theme;
- }
- return $theme;
- }
- /**
- * Retrieves the category theme if one exists, otherwise checks the parent categories.
- * Recursive function.
- *
- * @uses $COURSE
- * @param integer $categoryid id of the category to check
- * @return string theme name
- */
- function current_category_theme($categoryid=0) {
- global $COURSE;
- /// Use the COURSE global if the categoryid not set
- if (empty($categoryid)) {
- if (!empty($COURSE->category)) {
- $categoryid = $COURSE->category;
- } else {
- return false;
- }
- }
- /// Retrieve the current category
- if ($category = get_record('course_categories', 'id', $categoryid)) {
- /// Return the category theme if it exists
- if (!empty($category->theme)) {
- return $category->theme;
- /// Otherwise try the parent category if one exists
- } else if (!empty($category->parent)) {
- return current_category_theme($category->parent);
- }
- /// Return false if we can't find the category record
- } else {
- return false;
- }
- }
- /**
- * This function is called by stylesheets to set up the header
- * approriately as well as the current path
- *
- * @uses $CFG
- * @param int $lastmodified ?
- * @param int $lifetime ?
- * @param string $thename ?
- */
- function style_sheet_setup($lastmodified=0, $lifetime=300, $themename='', $forceconfig='', $lang='') {
- global $CFG, $THEME;
- // Fix for IE6 caching - we don't want the filemtime('styles.php'), instead use now.
- $lastmodified = time();
- header('Last-Modified: ' . gmdate("D, d M Y H:i:s", $lastmodified) . ' GMT');
- header('Expires: ' . gmdate("D, d M Y H:i:s", time() + $lifetime) . ' GMT');
- header('Cache-Control: max-age='. $lifetime);
- header('Pragma: ');
- header('Content-type: text/css'); // Correct MIME type
- $DEFAULT_SHEET_LIST = array('styles_layout', 'styles_fonts', 'styles_color');
- if (empty($themename)) {
- $themename = current_theme(); // So we have something. Normally not needed.
- } else {
- $themename = clean_param($themename, PARAM_SAFEDIR);
- }
- if (!empty($forceconfig)) { // Page wants to use the config from this theme instead
- unset($THEME);
- include($CFG->themedir.'/'.$forceconfig.'/'.'config.php');
- }
- /// If this is the standard theme calling us, then find out what sheets we need
- if ($themename == 'standard') {
- if (!isset($THEME->standardsheets) or $THEME->standardsheets === true) { // Use all the sheets we have
- $THEME->sheets = $DEFAULT_SHEET_LIST;
- } else if (empty($THEME->standardsheets)) { // We can stop right now!
- echo "/***** Nothing required from this stylesheet by main theme *****/\n\n";
- exit;
- } else { // Use the provided subset only
- $THEME->sheets = $THEME->standardsheets;
- }
- /// If we are a parent theme, then check for parent definitions
- } else if (!empty($THEME->parent) && $themename == $THEME->parent) {
- if (!isset($THEME->parentsheets) or $THEME->parentsheets === true) { // Use all the sheets we have
- $THEME->sheets = $DEFAULT_SHEET_LIST;
- } else if (empty($THEME->parentsheets)) { // We can stop right now!
- echo "/***** Nothing required from this stylesheet by main theme *****/\n\n";
- exit;
- } else { // Use the provided subset only
- $THEME->sheets = $THEME->parentsheets;
- }
- }
- /// Work out the last modified date for this theme
- foreach ($THEME->sheets as $sheet) {
- if (file_exists($CFG->themedir.'/'.$themename.'/'.$sheet.'.css')) {
- $sheetmodified = filemtime($CFG->themedir.'/'.$themename.'/'.$sheet.'.css');
- if ($sheetmodified > $lastmodified) {
- $lastmodified = $sheetmodified;
- }
- }
- }
- /// Get a list of all the files we want to include
- $files = array();
- foreach ($THEME->sheets as $sheet) {
- $files[] = array($CFG->themedir, $themename.'/'.$sheet.'.css');
- }
- if ($themename == 'standard') { // Add any standard styles included in any modules
- if (!empty($THEME->modsheets)) { // Search for styles.php within activity modules
- if ($mods = get_list_of_plugins('mod')) {
- foreach ($mods as $mod) {
- if (file_exists($CFG->dirroot.'/mod/'.$mod.'/styles.php')) {
- $files[] = array($CFG->dirroot, '/mod/'.$mod.'/styles.php');
- }
- }
- }
- }
- if (!empty($THEME->blocksheets)) { // Search for styles.php within block modules
- if ($mods = get_list_of_plugins('blocks')) {
- foreach ($mods as $mod) {
- if (file_exists($CFG->dirroot.'/blocks/'.$mod.'/styles.php')) {
- $files[] = array($CFG->dirroot, '/blocks/'.$mod.'/styles.php');
- }
- }
- }
- }
- if (!isset($THEME->courseformatsheets) || $THEME->courseformatsheets) { // Search for styles.php in course formats
- if ($mods = get_list_of_plugins('format','',$CFG->dirroot.'/course')) {
- foreach ($mods as $mod) {
- if (file_exists($CFG->dirroot.'/course/format/'.$mod.'/styles.php')) {
- $files[] = array($CFG->dirroot, '/course/format/'.$mod.'/styles.php');
- }
- }
- }
- }
- if (!isset($THEME->gradereportsheets) || $THEME->gradereportsheets) { // Search for styles.php in grade reports
- if ($reports = get_list_of_plugins('grade/report')) {
- foreach ($reports as $report) {
- if (file_exists($CFG->dirroot.'/grade/report/'.$report.'/styles.php')) {
- $files[] = array($CFG->dirroot, '/grade/report/'.$report.'/styles.php');
- }
- }
- }
- }
- if (!empty($THEME->langsheets)) { // Search for styles.php within the current language
- if (file_exists($CFG->dirroot.'/lang/'.$lang.'/styles.php')) {
- $files[] = array($CFG->dirroot, '/lang/'.$lang.'/styles.php');
- }
- }
- }
- if ($files) {
- /// Produce a list of all the files first
- echo '/**************************************'."\n";
- echo ' * THEME NAME: '.$themename."\n *\n";
- echo ' * Files included in this sheet:'."\n *\n";
- foreach ($files as $file) {
- echo ' * '.$file[1]."\n";
- }
- echo ' **************************************/'."\n\n";
- /// check if csscobstants is set
- if (!empty($THEME->cssconstants)) {
- require_once("$CFG->libdir/cssconstants.php");
- /// Actually collect all the files in order.
- $css = '';
- foreach ($files as $file) {
- $css .= '/***** '.$file[1].' start *****/'."\n\n";
- $css .= file_get_contents($file[0].'/'.$file[1]);
- $ccs .= '/***** '.$file[1].' end *****/'."\n\n";
- }
- /// replace css_constants with their values
- echo replace_cssconstants($css);
- } else {
- /// Actually output all the files in order.
- if (empty($CFG->CSSEdit) && empty($THEME->CSSEdit)) {
- foreach ($files as $file) {
- echo '/***** '.$file[1].' start *****/'."\n\n";
- @include_once($file[0].'/'.$file[1]);
- echo '/***** '.$file[1].' end *****/'."\n\n";
- }
- } else {
- foreach ($files as $file) {
- echo '/* @group '.$file[1].' */'."\n\n";
- if (strstr($file[1], '.css') !== FALSE) {
- echo '@import url("'.$CFG->themewww.'/'.$file[1].'");'."\n\n";
- } else {
- @include_once($file[0].'/'.$file[1]);
- }
- echo '/* @end */'."\n\n";
- }
- }
- }
- }
- return $CFG->themewww.'/'.$themename; // Only to help old themes (1.4 and earlier)
- }
- function theme_setup($theme = '', $params=NULL) {
- /// Sets up global variables related to themes
- global $CFG, $THEME, $SESSION, $USER, $HTTPSPAGEREQUIRED;
- /// Do not mess with THEME if header already printed - this would break all the extra stuff in global $THEME from print_header()!!
- if (defined('HEADER_PRINTED')) {
- return;
- }
- if (empty($theme)) {
- $theme = current_theme();
- }
- /// If the theme doesn't exist for some reason then revert to standardwhite
- if (!file_exists($CFG->themedir .'/'. $theme .'/config.php')) {
- $CFG->theme = $theme = 'standardwhite';
- }
- /// Load up the theme config
- $THEME = NULL; // Just to be sure
- include($CFG->themedir .'/'. $theme .'/config.php'); // Main config for current theme
- /// Put together the parameters
- if (!$params) {
- $params = array();
- }
- if ($theme != $CFG->theme) {
- $params[] = 'forceconfig='.$theme;
- }
- /// Force language too if required
- if (!empty($THEME->langsheets)) {
- $params[] = 'lang='.current_language();
- }
- /// Convert params to string
- if ($params) {
- $paramstring = '?'.implode('&', $params);
- } else {
- $paramstring = '';
- }
- /// Set up image paths
- if(isset($CFG->smartpix) && $CFG->smartpix==1) {
- if($CFG->slasharguments) { // Use this method if possible for better caching
- $extra='';
- } else {
- $extra='?file=';
- }
- $CFG->pixpath = $CFG->wwwroot. '/pix/smartpix.php'.$extra.'/'.$theme;
- $CFG->modpixpath = $CFG->wwwroot .'/pix/smartpix.php'.$extra.'/'.$theme.'/mod';
- } else if (empty($THEME->custompix)) { // Could be set in the above file
- $CFG->pixpath = $CFG->wwwroot .'/pix';
- $CFG->modpixpath = $CFG->wwwroot .'/mod';
- } else {
- $CFG->pixpath = $CFG->themewww .'/'. $theme .'/pix';
- $CFG->modpixpath = $CFG->themewww .'/'. $theme .'/pix/mod';
- }
- /// Header and footer paths
- $CFG->header = $CFG->themedir .'/'. $theme .'/header.html';
- $CFG->footer = $CFG->themedir .'/'. $theme .'/footer.html';
- /// Define stylesheet loading order
- $CFG->stylesheets = array();
- if ($theme != 'standard') { /// The standard sheet is always loaded first
- $CFG->stylesheets[] = $CFG->themewww.'/standard/styles.php'.$paramstring;
- }
- if (!empty($THEME->parent)) { /// Parent stylesheets are loaded next
- $CFG->stylesheets[] = $CFG->themewww.'/'.$THEME->parent.'/styles.php'.$paramstring;
- }
- $CFG->stylesheets[] = $CFG->themewww.'/'.$theme.'/styles.php'.$paramstring;
- /// We have to change some URLs in styles if we are in a $HTTPSPAGEREQUIRED page
- if (!empty($HTTPSPAGEREQUIRED)) {
- $CFG->themewww = str_replace('http:', 'https:', $CFG->themewww);
- $CFG->pixpath = str_replace('http:', 'https:', $CFG->pixpath);
- $CFG->modpixpath = str_replace('http:', 'https:', $CFG->modpixpath);
- foreach ($CFG->stylesheets as $key => $stylesheet) {
- $CFG->stylesheets[$key] = str_replace('http:', 'https:', $stylesheet);
- }
- }
- // RTL support - only for RTL languages, add RTL CSS
- if (get_string('thisdirection') == 'rtl') {
- $CFG->stylesheets[] = $CFG->themewww.'/standard/rtl.css'.$paramstring;
- $CFG->stylesheets[] = $CFG->themewww.'/'.$theme.'/rtl.css'.$paramstring;
- }
- }
- /**
- * Returns text to be displayed to the user which reflects their login status
- *
- * @uses $CFG
- * @uses $USER
- * @param course $course {@link $COURSE} object containing course information
- * @param user $user {@link $USER} object containing user information
- * @return string
- */
- function user_login_string($course=NULL, $user=NULL) {
- global $USER, $CFG, $SITE;
- if (empty($user) and !empty($USER->id)) {
- $user = $USER;
- }
- if (empty($course)) {
- $course = $SITE;
- }
- if (!empty($user->realuser)) {
- if ($realuser = get_record('user', 'id', $user->realuser)) {
- $fullname = fullname($realuser, true);
- $realuserinfo = " [<a $CFG->frametarget
- href=\"$CFG->wwwroot/course/loginas.php?id=$course->id&return=1&sesskey=".sesskey()."\">$fullname</a>] ";
- }
- } else {
- $realuserinfo = '';
- }
- if (empty($CFG->loginhttps)) {
- $wwwroot = $CFG->wwwroot;
- } else {
- $wwwroot = str_replace('http:','https:',$CFG->wwwroot);
- }
- if (empty($course->id)) {
- // $course->id is not defined during installation
- return '';
- } else if (!empty($user->id)) {
- $context = get_context_instance(CONTEXT_COURSE, $course->id);
- $fullname = fullname($user, true);
- $username = "<a $CFG->frametarget href=\"$CFG->wwwroot/user/view.php?id=$user->id&course=$course->id\">$fullname</a>";
- if (is_mnet_remote_user($user) and $idprovider = get_record('mnet_host', 'id', $user->mnethostid)) {
- $username .= " from <a $CFG->frametarget href=\"{$idprovider->wwwroot}\">{$idprovider->name}</a>";
- }
- if (isset($user->username) && $user->username == 'guest') {
- $loggedinas = $realuserinfo.get_string('loggedinasguest').
- " (<a $CFG->frametarget href=\"$wwwroot/login/index.php\">".get_string('login').'</a>)';
- } else if (!empty($user->access['rsw'][$context->path])) {
- $rolename = '';
- if ($role = get_record('role', 'id', $user->access['rsw'][$context->path])) {
- $rolename = ': '.format_string($role->name);
- }
- $loggedinas = get_string('loggedinas', 'moodle', $username).$rolename.
- " (<a $CFG->frametarget
- href=\"$CFG->wwwroot/course/view.php?id=$course->id&switchrole=0&sesskey=".sesskey()."\">".get_string('switchrolereturn').'</a>)';
- } else {
- $loggedinas = $realuserinfo.get_string('loggedinas', 'moodle', $username).' '.
- " (<a $CFG->frametarget href=\"$CFG->wwwroot/login/logout.php?sesskey=".sesskey()."\">".get_string('logout').'</a>)';
- }
- } else {
- $loggedinas = get_string('loggedinnot', 'moodle').
- " (<a $CFG->frametarget href=\"$wwwroot/login/index.php\">".get_string('login').'</a>)';
- }
- return '<div class="logininfo">'.$loggedinas.'</div>';
- }
- /**
- * Tests whether $THEME->rarrow, $THEME->larrow have been set (theme/-/config.php).
- * If not it applies sensible defaults.
- *
- * Accessibility: right and left arrow Unicode characters for breadcrumb, calendar,
- * search forum block, etc. Important: these are 'silent' in a screen-reader
- * (unlike > »), and must be accompanied by text.
- * @uses $THEME
- */
- function check_theme_arrows() {
- global $THEME;
- if (!isset($THEME->rarrow) and !isset($THEME->larrow)) {
- // Default, looks good in Win XP/IE 6, Win/Firefox 1.5, Win/Netscape 8...
- // Also OK in Win 9x/2K/IE 5.x
- $THEME->rarrow = '►';
- $THEME->larrow = '◄';
- if (empty($_SERVER['HTTP_USER_AGENT'])) {
- $uagent = '';
- } else {
- $uagent = $_SERVER['HTTP_USER_AGENT'];
- }
- if (false !== strpos($uagent, 'Opera')
- || false !== strpos($uagent, 'Mac')) {
- // Looks good in Win XP/Mac/Opera 8/9, Mac/Firefox 2, Camino, Safari.
- // Not broken in Mac/IE 5, Mac/Netscape 7 (?).
- $THEME->rarrow = '▶';
- $THEME->larrow = '◀';
- }
- elseif (false !== strpos($uagent, 'Konqueror')) {
- $THEME->rarrow = '→';
- $THEME->larrow = '←';
- }
- elseif (isset($_SERVER['HTTP_ACCEPT_CHARSET'])
- && false === stripos($_SERVER['HTTP_ACCEPT_CHARSET'], 'utf-8')) {
- // (Win/IE 5 doesn't set ACCEPT_CHARSET, but handles Unicode.)
- // To be safe, non-Unicode browsers!
- $THEME->rarrow = '>';
- $THEME->larrow = '<';
- }
- /// RTL support - in RTL languages, swap r and l arrows
- if (right_to_left()) {
- $t = $THEME->rarrow;
- $THEME->rarrow = $THEME->larrow;
- $THEME->larrow = $t;
- }
- }
- }
- /**
- * Return the right arrow with text ('next'), and optionally embedded in a link.
- * See function above, check_theme_arrows.
- * @param string $text HTML/plain text label (set to blank only for breadcrumb separator cases).
- * @param string $url An optional link to use in a surrounding HTML anchor.
- * @param bool $accesshide True if text should be hidden (for screen readers only).
- * @param string $addclass Additional class names for the link, or the arrow character.
- * @return string HTML string.
- */
- function link_arrow_right($text, $url='', $accesshide=false, $addclass='') {
- global $THEME;
- check_theme_arrows();
- $arrowclass = 'arrow ';
- if (! $url) {
- $arrowclass .= $addclass;
- }
- $arrow = '<span class="'.$arrowclass.'">'.$THEME->rarrow.'</span>';
- $htmltext = '';
- if ($text) {
- $htmltext = $text.' ';
- if ($accesshide) {
- $htmltext = get_accesshide($htmltext);
- }
- }
- if ($url) {
- $class = '';
- if ($addclass) {
- $class =" class=\"$addclass\"";
- }
- return '<a'.$class.' href="'.$url.'" title="'.preg_replace('/<.*?>/','',$text).'">'.$htmltext.$arrow.'</a>';
- }
- return $htmltext.$arrow;
- }
- /**
- * Return the left arrow with text ('previous'), and optionally embedded in a link.
- * See function above, check_theme_arrows.
- * @param string $text HTML/plain text label (set to blank only for breadcrumb separator cases).
- * @param string $url An optional link to use in a surrounding HTML anchor.
- * @param bool $accesshide True if text should be hidden (for screen readers only).
- * @param string $addclass Additional class names for the link, or the arrow character.
- * @return string HTML string.
- */
- function link_arrow_left($text, $url='', $accesshide=false, $addclass='') {
- global $THEME;
- check_theme_arrows();
- $arrowclass = 'arrow ';
- if (! $url) {
- $arrowclass .= $addclass;
- }
- $arrow = '<span class="'.$arrowclass.'">'.$THEME->larrow.'</span>';
- $htmltext = '';
- if ($text) {
- $htmltext = ' '.$text;
- if ($accesshide) {
- $htmltext = get_accesshide($htmltext);
- }
- }
- if ($url) {
- $class = '';
- if ($addclass) {
- $class =" class=\"$addclass\"";
- }
- return '<a'.$class.' href="'.$url.'" title="'.preg_replace('/<.*?>/','',$text).'">'.$arrow.$htmltext.'</a>';
- }
- return $arrow.$htmltext;
- }
- /**
- * Return a HTML element with the class "accesshide", for accessibility.
- * Please use cautiously - where possible, text should be visible!
- * @param string $text Plain text.
- * @param string $elem Lowercase element name, default "span".
- * @param string $class Additional classes for the element.
- * @param string $attrs Additional attributes string in the form, "name='value' name2='value2'"
- * @return string HTML string.
- */
- function get_accesshide($text, $elem='span', $class='', $attrs='') {
- return "<$elem class=\"accesshide $class\" $attrs>$text</$elem>";
- }
- /**
- * Return the breadcrumb trail navigation separator.
- * @return string HTML string.
- */
- function get_separator() {
- //Accessibility: the 'hidden' slash is preferred for screen readers.
- return ' '.link_arrow_right($text='/', $url='', $accesshide=true, 'sep').' ';
- }
- /**
- * Prints breadcrumb trail of links, called in theme/-/header.html
- *
- * @uses $CFG
- * @param mixed $navigation The breadcrumb navigation string to be printed
- * @param string $separator OBSOLETE, mostly not used any more. See build_navigation instead.
- * @param boolean $return False to echo the breadcrumb string (default), true to return it.
- * @return string or null, depending on $return.
- */
- function print_navigation ($navigation, $separator=0, $return=false) {
- global $CFG, $THEME;
- $output = '';
- if (0 === $separator) {
- $separator = get_separator();
- }
- else {
- $separator = '<span class="sep">'. $separator .'</span>';
- }
- if ($navigation) {
- if (is_newnav($navigation)) {
- if ($return) {
- return($navigation['navlinks']);
- } else {
- echo $navigation['navlinks'];
- return;
- }
- } else {
- debugging('Navigation needs to be updated to use build_navigation()', DEBUG_DEVELOPER);
- }
- if (!is_array($navigation)) {
- $ar = explode('->', $navigation);
- $navigation = array();
- foreach ($ar as $a) {
- if (strpos($a, '</a>') === false) {
- $navigation[] = array('title' => $a, 'url' => '');
- } else {
- if (preg_match('/<a.*href="([^"]*)">(.*)<\/a>/', $a, $matches)) {
- $navigation[] = array('title' => $matches[2], 'url' => $matches[1]);
- }
- }
- }
- }
- if (! $site = get_site()) {
- $site = new object();
- $site->shortname = get_string('home');
- }
- //Accessibility: breadcrumb links now in a list, » replaced with a 'silent' character.
- $output .= get_accesshide(get_string('youarehere','access'), 'h2')."<ul>\n";
- $output .= '<li class="first">'."\n".'<a '.$CFG->frametarget.' onclick="this.target=\''.$CFG->framename.'\'" href="'
- .$CFG->wwwroot.((!has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))
- && !empty($USER->id) && !empty($CFG->mymoodleredirect) && !isguest())
- ? '/my' : '') .'/">'. format_string($site->shortname) ."</a>\n</li>\n";
- foreach ($navigation as $navitem) {
- $title = trim(strip_tags(format_string($navitem['title'], false)));
- $url = $navitem['url'];
- if (empty($url)) {
- $output .= '<li>'."$separator $title</li>\n";
- } else {
- $output .= '<li>'."$separator\n<a ".$CFG->frametarget.' onclick="this.target=\''.$CFG->framename.'\'" href="'
- .$url.'">'."$title</a>\n</li>\n";
- }
- }
- $output .= "</ul>\n";
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * This function will build the navigation string to be used by print_header
- * and others.
- *
- * It automatically generates the site and course level (if appropriate) links.
- *
- * If you pass in a $cm object, the method will also generate the activity (e.g. 'Forums')
- * and activityinstances (e.g. 'General Developer Forum') navigation levels.
- *
- * If you want to add any further navigation links after the ones this function generates,
- * the pass an array of extra link arrays like this:
- * array(
- * array('name' => $linktext1, 'link' => $url1, 'type' => $linktype1),
- * array('name' => $linktext2, 'link' => $url2, 'type' => $linktype2)
- * )
- * The normal case is to just add one further link, for example 'Editing forum' after
- * 'General Developer Forum', with no link.
- * To do that, you need to pass
- * array(array('name' => $linktext, 'link' => '', 'type' => 'title'))
- * However, becuase this is a very common case, you can use a shortcut syntax, and just
- * pass the string 'Editing forum', instead of an array as $extranavlinks.
- *
- * At the moment, the link types only have limited significance. Type 'activity' is
- * recognised in order to implement the $CFG->hideactivitytypenavlink feature. Types
- * that are known to appear are 'home', 'course', 'activity', 'activityinstance' and 'title'.
- * This really needs to be documented better. In the mean time, try to be consistent, it will
- * enable people to customise the navigation more in future.
- *
- * When passing a $cm object, the fields used are $cm->modname, $cm->name and $cm->course.
- * If you get the $cm object using the function get_coursemodule_from_instance or
- * get_coursemodule_from_id (as recommended) then this will be done for you automatically.
- * If you don't have $cm->modname or $cm->name, this fuction will attempt to find them using
- * the $cm->module and $cm->instance fields, but this takes extra database queries, so a
- * warning is printed in developer debug mode.
- *
- * @uses $CFG
- * @uses $THEME
- *
- * @param mixed $extranavlinks - Normally an array of arrays, keys: name, link, type. If you
- * only want one extra item with no link, you can pass a string instead. If you don't want
- * any extra links, pass an empty string.
- * @param mixed $cm - optionally the $cm object, if you want this function to generate the
- * activity and activityinstance levels of navigation too.
- *
- * @return $navigation as an object so it can be differentiated from old style
- * navigation strings.
- */
- function build_navigation($extranavlinks, $cm = null) {
- global $CFG, $COURSE;
- if (is_string($extranavlinks)) {
- if ($extranavlinks == '') {
- $extranavlinks = array();
- } else {
- $extranavlinks = array(array('name' => $extranavlinks, 'link' => '', 'type' => 'title'));
- }
- }
- $navlinks = array();
- //Site name
- if ($site = get_site()) {
- $navlinks[] = array(
- 'name' => format_string($site->shortname),
- 'link' => "$CFG->wwwroot/",
- 'type' => 'home');
- }
- // Course name, if appropriate.
- if (isset($COURSE) && $COURSE->id != SITEID) {
- $navlinks[] = array(
- 'name' => format_string($COURSE->shortname),
- 'link' => "$CFG->wwwroot/course/view.php?id=$COURSE->id",
- 'type' => 'course');
- }
- // Activity type and instance, if appropriate.
- if (is_object($cm)) {
- if (!isset($cm->modname)) {
- debugging('The field $cm->modname should be set if you call build_navigation with '.
- 'a $cm parameter. If you get $cm using get_coursemodule_from_instance or '.
- 'get_coursemodule_from_id, this will be done automatically.', DEBUG_DEVELOPER);
- if (!$cm->modname = get_field('modules', 'name', 'id', $cm->module)) {
- error('Cannot get the module type in build navigation.');
- }
- }
- if (!isset($cm->name)) {
- debugging('The field $cm->name should be set if you call build_navigation with '.
- 'a $cm parameter. If you get $cm using get_coursemodule_from_instance or '.
- 'get_coursemodule_from_id, this will be done automatically.', DEBUG_DEVELOPER);
- if (!$cm->name = get_field($cm->modname, 'name', 'id', $cm->instance)) {
- error('Cannot get the module name in build navigation.');
- }
- }
- $navlinks[] = array(
- 'name' => get_string('modulenameplural', $cm->modname),
- 'link' => $CFG->wwwroot . '/mod/' . $cm->modname . '/index.php?id=' . $cm->course,
- 'type' => 'activity');
- $navlinks[] = array(
- 'name' => format_string($cm->name),
- 'link' => $CFG->wwwroot . '/mod/' . $cm->modname . '/view.php?id=' . $cm->id,
- 'type' => 'activityinstance');
- }
- //Merge in extra navigation links
- $navlinks = array_merge($navlinks, $extranavlinks);
- // Work out whether we should be showing the activity (e.g. Forums) link.
- // Note: build_navigation() is called from many places --
- // install & upgrade for example -- where we cannot count on the
- // roles infrastructure to be defined. Hence the $CFG->rolesactive check.
- if (!isset($CFG->hideactivitytypenavlink)) {
- $CFG->hideactivitytypenavlink = 0;
- }
- if ($CFG->hideactivitytypenavlink == 2) {
- $hideactivitylink = true;
- } else if ($CFG->hideactivitytypenavlink == 1 && $CFG->rolesactive &&
- !empty($COURSE->id) && $COURSE->id != SITEID) {
- if (!isset($COURSE->context)) {
- $COURSE->context = get_context_instance(CONTEXT_COURSE, $COURSE->id);
- }
- $hideactivitylink = !has_capability('moodle/course:manageactivities', $COURSE->context);
- } else {
- $hideactivitylink = false;
- }
- //Construct an unordered list from $navlinks
- //Accessibility: heading hidden from visual browsers by default.
- $navigation = get_accesshide(get_string('youarehere','access'), 'h2')." <ul>\n";
- $lastindex = count($navlinks) - 1;
- $i = -1; // Used to count the times, so we know when we get to the last item.
- $first = true;
- foreach ($navlinks as $navlink) {
- $i++;
- $last = ($i == $lastindex);
- if (!is_array($navlink)) {
- continue;
- }
- if (!empty($navlink['type']) && $navlink['type'] == 'activity' && !$last && $hideactivitylink) {
- continue;
- }
- if ($first) {
- $navigation .= '<li class="first">';
- } else {
- $navigation .= '<li>';
- }
- if (!$first) {
- $navigation .= get_separator();
- }
- if ((!empty($navlink['link'])) && !$last) {
- $navigation .= "<a $CFG->frametarget onclick=\"this.target='$CFG->framename'\" href=\"{$navlink['link']}\">";
- }
- $navigation .= "{$navlink['name']}";
- if ((!empty($navlink['link'])) && !$last) {
- $navigation .= "</a>";
- }
- $navigation .= "</li>";
- $first = false;
- }
- $navigation .= "</ul>";
- return(array('newnav' => true, 'navlinks' => $navigation));
- }
- /**
- * Prints a string in a specified size (retained for backward compatibility)
- *
- * @param string $text The text to be displayed
- * @param int $size The size to set the font for text display.
- */
- function print_headline($text, $size=2, $return=false) {
- $output = print_heading($text, '', $size, true);
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Prints text in a format for use in headings.
- *
- * @param string $text The text to be displayed
- * @param string $align The alignment of the printed paragraph of text
- * @param int $size The size to set the font for text display.
- */
- function print_heading($text, $align='', $size=2, $class='main', $return=false) {
- if ($align) {
- $align = ' style="text-align:'.$align.';"';
- }
- if ($class) {
- $class = ' class="'.$class.'"';
- }
- $output = "<h$size $align $class>".stripslashes_safe($text)."</h$size>";
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Centered heading with attached help button (same title text)
- * and optional icon attached
- *
- * @param string $text The text to be displayed
- * @param string $helppage The help page to link to
- * @param string $module The module whose help should be linked to
- * @param string $icon Image to display if needed
- */
- function print_heading_with_help($text, $helppage, $module='moodle', $icon='', $return=false) {
- $output = '';
- $output .= '<h2 class="main help">'.$icon.stripslashes_safe($text);
- $output .= helpbutton($helppage, $text, $module, true, false, '', true);
- $output .= '</h2>';
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- function print_heading_block($heading, $class='', $return=false) {
- //Accessibility: 'headingblock' is now H1, see theme/standard/styles_*.css: ??
- $output = '<h2 class="headingblock header '.$class.'">'.stripslashes($heading).'</h2>';
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Print a link to continue on to another page.
- *
- * @uses $CFG
- * @param string $link The url to create a link to.
- */
- function print_continue($link, $return=false) {
- global $CFG;
- // in case we are logging upgrade in admin/index.php stop it
- if (function_exists('upgrade_log_finish')) {
- upgrade_log_finish();
- }
- $output = '';
- if ($link == '') {
- if (!empty($_SERVER['HTTP_REFERER'])) {
- $link = $_SERVER['HTTP_REFERER'];
- $link = str_replace('&', '&', $link); // make it valid XHTML
- } else {
- $link = $CFG->wwwroot .'/';
- }
- }
- $options = array();
- $linkparts = parse_url(str_replace('&', '&', $link));
- if (isset($linkparts['query'])) {
- parse_str($linkparts['query'], $options);
- }
- $output .= '<div class="continuebutton">';
- $output .= print_single_button($link, $options, get_string('continue'), 'get', $CFG->framename, true);
- $output .= '</div>'."\n";
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Print a message in a standard themed box.
- * Replaces print_simple_box (see deprecatedlib.php)
- *
- * @param string $message, the content of the box
- * @param string $classes, space-separated class names.
- * @param string $idbase
- * @param boolean $return, return as string or just print it
- * @return mixed string or void
- */
- function print_box($message, $classes='generalbox', $ids='', $return=false) {
- $output = print_box_start($classes, $ids, true);
- $output .= stripslashes_safe($message);
- $output .= print_box_end(true);
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Starts a box using divs
- * Replaces print_simple_box_start (see deprecatedlib.php)
- *
- * @param string $classes, space-separated class names.
- * @param string $idbase
- * @param boolean $return, return as string or just print it
- * @return mixed string or void
- */
- function print_box_start($classes='generalbox', $ids='', $return=false) {
- global $THEME;
- if (strpos($classes, 'clearfix') !== false) {
- $clearfix = true;
- $classes = trim(str_replace('clearfix', '', $classes));
- } else {
- $clearfix = false;
- }
- if (!empty($THEME->customcorners)) {
- $classes .= ' ccbox box';
- } else {
- $classes .= ' box';
- }
- return print_container_start($clearfix, $classes, $ids, $return);
- }
- /**
- * Simple function to end a box (see above)
- * Replaces print_simple_box_end (see deprecatedlib.php)
- *
- * @param boolean $return, return as string or just print it
- */
- function print_box_end($return=false) {
- return print_container_end($return);
- }
- /**
- * Print a message in a standard themed container.
- *
- * @param string $message, the content of the container
- * @param boolean $clearfix clear both sides
- * @param string $classes, space-separated class names.
- * @param string $idbase
- * @param boolean $return, return as string or just print it
- * @return string or void
- */
- function print_container($message, $clearfix=false, $classes='', $idbase='', $return=false) {
- $output = print_container_start($clearfix, $classes, $idbase, true);
- $output .= stripslashes_safe($message);
- $output .= print_container_end(true);
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Starts a container using divs
- *
- * @param boolean $clearfix clear both sides
- * @param string $classes, space-separated class names.
- * @param string $idbase
- * @param boolean $return, return as string or just print it
- * @return mixed string or void
- */
- function print_container_start($clearfix=false, $classes='', $idbase='', $return=false) {
- global $THEME;
- if (!isset($THEME->open_containers)) {
- $THEME->open_containers = array();
- }
- $THEME->open_containers[] = $idbase;
- if (!empty($THEME->customcorners)) {
- $output = _print_custom_corners_start($clearfix, $classes, $idbase);
- } else {
- if ($idbase) {
- $id = ' id="'.$idbase.'"';
- } else {
- $id = '';
- }
- if ($clearfix) {
- $clearfix = ' clearfix';
- } else {
- $clearfix = '';
- }
- if ($classes or $clearfix) {
- $class = ' class="'.$classes.$clearfix.'"';
- } else {
- $class = '';
- }
- $output = '<div'.$id.$class.'>';
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Simple function to end a container (see above)
- * @param boolean $return, return as string or just print it
- * @return mixed string or void
- */
- function print_container_end($return=false) {
- global $THEME;
- if (empty($THEME->open_containers)) {
- debugging('Incorrect request to end container - no more open containers.', DEBUG_DEVELOPER);
- $idbase = '';
- } else {
- $idbase = array_pop($THEME->open_containers);
- }
- if (!empty($THEME->customcorners)) {
- $output = _print_custom_corners_end($idbase);
- } else {
- $output = '</div>';
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Returns number of currently open containers
- * @return int number of open containers
- */
- function open_containers() {
- global $THEME;
- if (!isset($THEME->open_containers)) {
- $THEME->open_containers = array();
- }
- return count($THEME->open_containers);
- }
- /**
- * Force closing of open containers
- * @param boolean $return, return as string or just print it
- * @param int $keep number of containers to be kept open - usually theme or page containers
- * @return mixed string or void
- */
- function print_container_end_all($return=false, $keep=0) {
- $output = '';
- while (open_containers() > $keep) {
- $output .= print_container_end($return);
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Internal function - do not use directly!
- * Starting part of the surrounding divs for custom corners
- *
- * @param boolean $clearfix, add CLASS "clearfix" to the inner div against collapsing
- * @param string $classes
- * @param mixed $idbase, optionally, define one idbase to be added to all the elements in the corners
- * @return string
- */
- function _print_custom_corners_start($clearfix=false, $classes='', $idbase='') {
- /// Analise if we want ids for the custom corner elements
- $id = '';
- $idbt = '';
- $idi1 = '';
- $idi2 = '';
- $idi3 = '';
- if ($idbase) {
- $id = 'id="'.$idbase.'" ';
- $idbt = 'id="'.$idbase.'-bt" ';
- $idi1 = 'id="'.$idbase.'-i1" ';
- $idi2 = 'id="'.$idbase.'-i2" ';
- $idi3 = 'id="'.$idbase.'-i3" ';
- }
- /// Calculate current level
- $level = open_containers();
- /// Output begins
- $output = '<div '.$id.'class="wrap wraplevel'.$level.' '.$classes.'">'."\n";
- $output .= '<div '.$idbt.'class="bt"><div> </div></div>';
- $output .= "\n";
- $output .= '<div '.$idi1.'class="i1"><div '.$idi2.'class="i2">';
- $output .= (!empty($clearfix)) ? '<div '.$idi3.'class="i3 clearfix">' : '<div '.$idi3.'class="i3">';
- return $output;
- }
- /**
- * Internal function - do not use directly!
- * Ending part of the surrounding divs for custom corners
- * @param string $idbase
- * @return string
- */
- function _print_custom_corners_end($idbase) {
- /// Analise if we want ids for the custom corner elements
- $idbb = '';
- if ($idbase) {
- $idbb = 'id="' . $idbase . '-bb" ';
- }
- /// Output begins
- $output = '</div></div></div>';
- $output .= "\n";
- $output .= '<div '.$idbb.'class="bb"><div> </div></div>'."\n";
- $output .= '</div>';
- return $output;
- }
- /**
- * Print a self contained form with a single submit button.
- *
- * @param string $link used as the action attribute on the form, so the URL that will be hit if the button is clicked.
- * @param array $options these become hidden form fields, so these options get passed to the script at $link.
- * @param string $label the caption that appears on the button.
- * @param string $method HTTP method used on the request of the button is clicked. 'get' or 'post'.
- * @param string $target no longer used.
- * @param boolean $return if false, output the form directly, otherwise return the HTML as a string.
- * @param string $tooltip a tooltip to add to the button as a title attribute.
- * @param boolean $disabled if true, the button will be disabled.
- * @param string $jsconfirmmessage if not empty then display a confirm dialogue with this string as the question.
- * @return string / nothing depending on the $return paramter.
- */
- function print_single_button($link, $options, $label='OK', $method='get', $target='_self', $return=false, $tooltip='', $disabled = false, $jsconfirmmessage='') {
- $output = '';
- $link = str_replace('"', '"', $link); //basic XSS protection
- $output .= '<div class="singlebutton">';
- // taking target out, will need to add later target="'.$target.'"
- $output .= '<form action="'. $link .'" method="'. $method .'">';
- $output .= '<div>';
- if ($options) {
- foreach ($options as $name => $value) {
- $output .= '<input type="hidden" name="'. $name .'" value="'. s($value) .'" />';
- }
- }
- if ($tooltip) {
- $tooltip = 'title="' . s($tooltip) . '"';
- } else {
- $tooltip = '';
- }
- if ($disabled) {
- $disabled = 'disabled="disabled"';
- } else {
- $disabled = '';
- }
- if ($jsconfirmmessage){
- $jsconfirmmessage = addslashes_js($jsconfirmmessage);
- $jsconfirmmessage = 'onclick="return confirm(\''. $jsconfirmmessage .'\');" ';
- }
- $output .= '<input type="submit" value="'. s($label) ."\" $tooltip $disabled $jsconfirmmessage/></div></form></div>";
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Print a spacer image with the option of including a line break.
- *
- * @param int $height ?
- * @param int $width ?
- * @param boolean $br ?
- * @todo Finish documenting this function
- */
- function print_spacer($height=1, $width=1, $br=true, $return=false) {
- global $CFG;
- $output = '';
- $output .= '<img class="spacer" height="'. $height .'" width="'. $width .'" src="'. $CFG->wwwroot .'/pix/spacer.gif" alt="" />';
- if ($br) {
- $output .= '<br />'."\n";
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Given the path to a picture file in a course, or a URL,
- * this function includes the picture in the page.
- *
- * @param string $path ?
- * @param int $courseid ?
- * @param int $height ?
- * @param int $width ?
- * @param string $link ?
- * @todo Finish documenting this function
- */
- function print_file_picture($path, $courseid=0, $height='', $width='', $link='', $return=false) {
- global $CFG;
- $output = '';
- if ($height) {
- $height = 'height="'. $height .'"';
- }
- if ($width) {
- $width = 'width="'. $width .'"';
- }
- if ($link) {
- $output .= '<a href="'. $link .'">';
- }
- if (substr(strtolower($path), 0, 7) == 'http://') {
- $output .= '<img style="height:'.$height.'px;width:'.$width.'px;" src="'. $path .'" />';
- } else if ($courseid) {
- $output .= '<img style="height:'.$height.'px;width:'.$width.'px;" src="';
- require_once($CFG->libdir.'/filelib.php');
- $output .= get_file_url("$courseid/$path");
- $output .= '" />';
- } else {
- $output .= 'Error: must pass URL or course';
- }
- if ($link) {
- $output .= '</a>';
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Print the specified user's avatar.
- *
- * @param mixed $user Should be a $user object with at least fields id, picture, imagealt, firstname, lastname
- * If any of these are missing, or if a userid is passed, the the database is queried. Avoid this
- * if at all possible, particularly for reports. It is very bad for performance.
- * @param int $courseid The course id. Used when constructing the link to the user's profile.
- * @param boolean $picture The picture to print. By default (or if NULL is passed) $user->picture is used.
- * @param int $size Size in pixels. Special values are (true/1 = 100px) and (false/0 = 35px) for backward compatability
- * @param boolean $return If false print picture to current page, otherwise return the output as string
- * @param boolean $link enclose printed image in a link the user's profile (default true).
- * @param string $target link target attribute. Makes the profile open in a popup window.
- * @param boolean $alttext add non-blank alt-text to the image. (Default true, set to false for purely
- * decorative images, or where the username will be printed anyway.)
- * @return string or nothing, depending on $return.
- */
- function print_user_picture($user, $courseid, $picture=NULL, $size=0, $return=false, $link=true, $target='', $alttext=true) {
- global $CFG;
- $needrec = false;
- // only touch the DB if we are missing data...
- if (is_object($user)) {
- // Note - both picture and imagealt _can_ be empty
- // what we are trying to see here is if they have been fetched
- // from the DB. We should use isset() _except_ that some installs
- // have those fields as nullable, and isset() will return false
- // on null. The only safe thing is to ask array_key_exists()
- // which works on objects. property_exists() isn't quite
- // what we want here...
- if (! (array_key_exists('picture', $user)
- && ($alttext && array_key_exists('imagealt', $user)
- || (isset($user->firstname) && isset($user->lastname)))) ) {
- $needrec = true;
- $user = $user->id;
- }
- } else {
- if ($alttext) {
- // we need firstname, lastname, imagealt, can't escape...
- $needrec = true;
- } else {
- $userobj = new StdClass; // fake it to save DB traffic
- $userobj->id = $user;
- $userobj->picture = $picture;
- $user = clone($userobj);
- unset($userobj);
- }
- }
- if ($needrec) {
- $user = get_record('user','id',$user, '', '', '', '', 'id,firstname,lastname,imagealt');
- }
- if ($link) {
- $url = '/user/view.php?id='. $user->id .'&course='. $courseid ;
- if ($target) {
- $target='onclick="return openpopup(\''.$url.'\');"';
- }
- $output = '<a '.$target.' href="'. $CFG->wwwroot . $url .'">';
- } else {
- $output = '';
- }
- if (empty($size)) {
- $file = 'f2';
- $size = 35;
- } else if ($size === true or $size == 1) {
- $file = 'f1';
- $size = 100;
- } else if ($size >= 50) {
- $file = 'f1';
- } else {
- $file = 'f2';
- }
- $class = "userpicture";
- if (is_null($picture) and !empty($user->picture)) {
- $picture = $user->picture;
- }
- if ($picture) { // Print custom user picture
- require_once($CFG->libdir.'/filelib.php');
- $src = get_file_url($user->id.'/'.$file.'.jpg', null, 'user');
- } else { // Print default user pictures (use theme version if available)
- $class .= " defaultuserpic";
- $src = "$CFG->pixpath/u/$file.png";
- }
- $imagealt = '';
- if ($alttext) {
- if (!empty($user->imagealt)) {
- $imagealt = $user->imagealt;
- } else {
- $imagealt = get_string('pictureof','',fullname($user));
- }
- }
- $output .= "<img class=\"$class\" src=\"$src\" height=\"$size\" width=\"$size\" alt=\"".s($imagealt).'" />';
- if ($link) {
- $output .= '</a>';
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Prints a summary of a user in a nice little box.
- *
- * @uses $CFG
- * @uses $USER
- * @param user $user A {@link $USER} object representing a user
- * @param course $course A {@link $COURSE} object representing a course
- */
- function print_user($user, $course, $messageselect=false, $return=false) {
- global $CFG, $USER;
- $output = '';
- static $string;
- static $datestring;
- static $countries;
- $context = get_context_instance(CONTEXT_COURSE, $course->id);
- if (isset($user->context->id)) {
- $usercontext = $user->context;
- } else {
- $usercontext = get_context_instance(CONTEXT_USER, $user->id);
- }
- if (empty($string)) { // Cache all the strings for the rest of the page
- $string->email = get_string('email');
- $string->city = get_string('city');
- $string->lastaccess = get_string('lastaccess');
- $string->activity = get_string('activity');
- $string->unenrol = get_string('unenrol');
- $string->loginas = get_string('loginas');
- $string->fullprofile = get_string('fullprofile');
- $string->role = get_string('role');
- $string->name = get_string('name');
- $string->never = get_string('never');
- $datestring->day = get_string('day');
- $datestring->days = get_string('days');
- $datestring->hour = get_string('hour');
- $datestring->hours = get_string('hours');
- $datestring->min = get_string('min');
- $datestring->mins = get_string('mins');
- $datestring->sec = get_string('sec');
- $datestring->secs = get_string('secs');
- $datestring->year = get_string('year');
- $datestring->years = get_string('years');
- $countries = get_list_of_countries();
- }
- /// Get the hidden field list
- if (has_capability('moodle/course:viewhiddenuserfields', $context)) {
- $hiddenfields = array();
- } else {
- $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
- }
- $output .= '<table class="userinfobox">';
- $output .= '<tr>';
- $output .= '<td class="left side">';
- $output .= print_user_picture($user, $course->id, $user->picture, true, true);
- $output .= '</td>';
- $output .= '<td class="content">';
- $output .= '<div class="username">'.fullname($user, has_capability('moodle/site:viewfullnames', $context)).'</div>';
- $output .= '<div class="info">';
- if (!empty($user->role) and ($user->role <> $course->teacher)) {
- $output .= $string->role .': '. $user->role .'<br />';
- }
- if ($user->maildisplay == 1 or ($user->maildisplay == 2 and ($course->id != SITEID) and !isguest()) or
- has_capability('moodle/course:viewhiddenuserfields', $context)) {
- $output .= $string->email .': <a href="mailto:'. $user->email .'">'. $user->email .'</a><br />';
- }
- if (($user->city or $user->country) and (!isset($hiddenfields['city']) or !isset($hiddenfields['country']))) {
- $output .= $string->city .': ';
- if ($user->city && !isset($hiddenfields['city'])) {
- $output .= $user->city;
- }
- if (!empty($countries[$user->country]) && !isset($hiddenfields['country'])) {
- if ($user->city && !isset($hiddenfields['city'])) {
- $output .= ', ';
- }
- $output .= $countries[$user->country];
- }
- $output .= '<br />';
- }
- if (!isset($hiddenfields['lastaccess'])) {
- if ($user->lastaccess) {
- $output .= $string->lastaccess .': '. userdate($user->lastaccess);
- $output .= ' ('. format_time(time() - $user->lastaccess, $datestring) .')';
- } else {
- $output .= $string->lastaccess .': '. $string->never;
- }
- }
- $output .= '</div></td><td class="links">';
- //link to blogs
- if ($CFG->bloglevel > 0) {
- $output .= '<a href="'.$CFG->wwwroot.'/blog/index.php?userid='.$user->id.'">'.get_string('blogs','blog').'</a><br />';
- }
- //link to notes
- if (!empty($CFG->enablenotes) and (has_capability('moodle/notes:manage', $context) || has_capability('moodle/notes:view', $context))) {
- $output .= '<a href="'.$CFG->wwwroot.'/notes/index.php?course=' . $course->id. '&user='.$user->id.'">'.get_string('notes','notes').'</a><br />';
- }
- if (has_capability('moodle/site:viewreports', $context) or has_capability('moodle/user:viewuseractivitiesreport', $usercontext)) {
- $output .= '<a href="'. $CFG->wwwroot .'/course/user.php?id='. $course->id .'&user='. $user->id .'">'. $string->activity .'</a><br />';
- }
- if (has_capability('moodle/role:assign', $context) and get_user_roles($context, $user->id, false)) { // I can unassing and user has some role
- $output .= '<a href="'. $CFG->wwwroot .'/course/unenrol.php?id='. $course->id .'&user='. $user->id .'">'. $string->unenrol .'</a><br />';
- }
- if ($USER->id != $user->id && empty($USER->realuser) && has_capability('moodle/user:loginas', $context) &&
- ! has_capability('moodle/site:doanything', $context, $user->id, false)) {
- $output .= '<a href="'. $CFG->wwwroot .'/course/loginas.php?id='. $course->id .'&user='. $user->id .'&sesskey='. sesskey() .'">'. $string->loginas .'</a><br />';
- }
- $output .= '<a href="'. $CFG->wwwroot .'/user/view.php?id='. $user->id .'&course='. $course->id .'">'. $string->fullprofile .'...</a>';
- if (!empty($messageselect)) {
- $output .= '<br /><input type="checkbox" name="user'.$user->id.'" /> ';
- }
- $output .= '</td></tr></table>';
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Print a specified group's avatar.
- *
- * @param group $group A single {@link group} object OR array of groups.
- * @param int $courseid The course ID.
- * @param boolean $large Default small picture, or large.
- * @param boolean $return If false print picture, otherwise return the output as string
- * @param boolean $link Enclose image in a link to view specified course?
- * @return string
- * @todo Finish documenting this function
- */
- function print_group_picture($group, $courseid, $large=false, $return=false, $link=true) {
- global $CFG;
- if (is_array($group)) {
- $output = '';
- foreach($group as $g) {
- $output .= print_group_picture($g, $courseid, $large, true, $link);
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- return;
- }
- }
- $context = get_context_instance(CONTEXT_COURSE, $courseid);
- if ($group->hidepicture and !has_capability('moodle/course:managegroups', $context)) {
- return '';
- }
- if ($link or has_capability('moodle/site:accessallgroups', $context)) {
- $output = '<a href="'. $CFG->wwwroot .'/user/index.php?id='. $courseid .'&group='. $group->id .'">';
- } else {
- $output = '';
- }
- if ($large) {
- $file = 'f1';
- } else {
- $file = 'f2';
- }
- if ($group->picture) { // Print custom group picture
- require_once($CFG->libdir.'/filelib.php');
- $grouppictureurl = get_file_url($group->id.'/'.$file.'.jpg', null, 'usergroup');
- $output .= '<img class="grouppicture" src="'.$grouppictureurl.'"'.
- ' alt="'.s(get_string('group').' '.$group->name).'" title="'.s($group->name).'"/>';
- }
- if ($link or has_capability('moodle/site:accessallgroups', $context)) {
- $output .= '</a>';
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Print a png image.
- *
- * @param string $url ?
- * @param int $sizex ?
- * @param int $sizey ?
- * @param boolean $return ?
- * @param string $parameters ?
- * @todo Finish documenting this function
- */
- function print_png($url, $sizex, $sizey, $return, $parameters='alt=""') {
- global $CFG;
- static $recentIE;
- if (!isset($recentIE)) {
- $recentIE = check_browser_version('MSIE', '5.0');
- }
- if ($recentIE) { // work around the HORRIBLE bug IE has with alpha transparencies
- $output .= '<img src="'. $CFG->pixpath .'/spacer.gif" width="'. $sizex .'" height="'. $sizey .'"'.
- ' class="png" style="width: '. $sizex .'px; height: '. $sizey .'px; '.
- ' filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='.
- "'$url', sizingMethod='scale') ".
- ' '. $parameters .' />';
- } else {
- $output .= '<img src="'. $url .'" style="width: '. $sizex .'px; height: '. $sizey .'px; '. $parameters .' />';
- }
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Print a nicely formatted table.
- *
- * @param array $table is an object with several properties.
- * <ul>
- * <li>$table->head - An array of heading names.
- * <li>$table->align - An array of column alignments
- * <li>$table->size - An array of column sizes
- * <li>$table->wrap - An array of "nowrap"s or nothing
- * <li>$table->data[] - An array of arrays containing the data.
- * <li>$table->width - A percentage of the page
- * <li>$table->tablealign - Align the whole table
- * <li>$table->cellpadding - Padding on each cell
- * <li>$table->cellspacing - Spacing between cells
- * <li>$table->class - class attribute to put on the table
- * <li>$table->id - id attribute to put on the table.
- * <li>$table->rowclass[] - classes to add to particular rows.
- * <li>$table->summary - Description of the contents for screen readers.
- * </ul>
- * @param bool $return whether to return an output string or echo now
- * @return boolean or $string
- * @todo Finish documenting this function
- */
- function print_table($table, $return=false) {
- $output = '';
- if (isset($table->align)) {
- foreach ($table->align as $key => $aa) {
- if ($aa) {
- $align[$key] = ' text-align:'. fix_align_rtl($aa) .';'; // Fix for RTL languages
- } else {
- $align[$key] = '';
- }
- }
- }
- if (isset($table->size)) {
- foreach ($table->size as $key => $ss) {
- if ($ss) {
- $size[$key] = ' width:'. $ss .';';
- } else {
- $size[$key] = '';
- }
- }
- }
- if (isset($table->wrap)) {
- foreach ($table->wrap as $key => $ww) {
- if ($ww) {
- $wrap[$key] = ' white-space:nowrap;';
- } else {
- $wrap[$key] = '';
- }
- }
- }
- if (empty($table->width)) {
- $table->width = '80%';
- }
- if (empty($table->tablealign)) {
- $table->tablealign = 'center';
- }
- if (!isset($table->cellpadding)) {
- $table->cellpadding = '5';
- }
- if (!isset($table->cellspacing)) {
- $table->cellspacing = '1';
- }
- if (empty($table->class)) {
- $table->class = 'generaltable';
- }
- $tableid = empty($table->id) ? '' : 'id="'.$table->id.'"';
- $output .= '<table width="'.$table->width.'" ';
- if (!empty($table->summary)) {
- $output .= " summary=\"$table->summary\"";
- }
- $output .= " cellpadding=\"$table->cellpadding\" cellspacing=\"$table->cellspacing\" class=\"$table->class boxalign$table->tablealign\" $tableid>\n";
- $countcols = 0;
-
- if (!empty($table->head)) {
- $countcols = count($table->head);
- $output .= '<tr>';
- $keys=array_keys($table->head);
- $lastkey = end($keys);
- foreach ($table->head as $key => $heading) {
- if (!isset($size[$key])) {
- $size[$key] = '';
- }
- if (!isset($align[$key])) {
- $align[$key] = '';
- }
- if ($key == $lastkey) {
- $extraclass = ' lastcol';
- } else {
- $extraclass = '';
- }
- $output .= '<th style="vertical-align:top;'. $align[$key].$size[$key] .';white-space:nowrap;" class="header c'.$key.$extraclass.'" scope="col">'. $heading .'</th>';
- }
- $output .= '</tr>'."\n";
- }
- if (!empty($table->data)) {
- $oddeven = 1;
- $keys=array_keys($table->data);
- $lastrowkey = end($keys);
- foreach ($table->data as $key => $row) {
- $oddeven = $oddeven ? 0 : 1;
- if (!isset($table->rowclass[$key])) {
- $table->rowclass[$key] = '';
- }
- if ($key == $lastrowkey) {
- $table->rowclass[$key] .= ' lastrow';
- }
- $output .= '<tr class="r'.$oddeven.' '.$table->rowclass[$key].'">'."\n";
- if ($row == 'hr' and $countcols) {
- $output .= '<td colspan="'. $countcols .'"><div class="tabledivider"></div></td>';
- } else { /// it's a normal row of data
- $keys2=array_keys($row);
- $lastkey = end($keys2);
- foreach ($row as $key => $item) {
- if (!isset($size[$key])) {
- $size[$key] = '';
- }
- if (!isset($align[$key])) {
- $align[$key] = '';
- }
- if (!isset($wrap[$key])) {
- $wrap[$key] = '';
- }
- if ($key == $lastkey) {
- $extraclass = ' lastcol';
- } else {
- $extraclass = '';
- }
- $output .= '<td style="'. $align[$key].$size[$key].$wrap[$key] .'" class="cell c'.$key.$extraclass.'">'. $item .'</td>';
- }
- }
- $output .= '</tr>'."\n";
- }
- }
- $output .= '</table>'."\n";
- if ($return) {
- return $output;
- }
- echo $output;
- return true;
- }
- function print_recent_activity_note($time, $user, $text, $link, $return=false, $viewfullnames=null) {
- static $strftimerecent = null;
- $output = '';
- if (is_null($viewfullnames)) {
- $context = get_context_instance(CONTEXT_SYSTEM);
- $viewfullnames = has_capability('moodle/site:viewfullnames', $context);
- }
- if (is_null($strftimerecent)) {
- $strftimerecent = get_string('strftimerecent');
- }
- $output .= '<div class="head">';
- $output .= '<div class="date">'.userdate($time, $strftimerecent).'</div>';
- $output .= '<div class="name">'.fullname($user, $viewfullnames).'</div>';
- $output .= '</div>';
- $output .= '<div class="info"><a href="'.$link.'">'.format_string($text,true).'</a></div>';
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Prints a basic textarea field.
- *
- * @uses $CFG
- * @param boolean $usehtmleditor ?
- * @param int $rows ?
- * @param int $cols ?
- * @param null $width <b>Legacy field no longer used!</b> Set to zero to get control over mincols
- * @param null $height <b>Legacy field no longer used!</b> Set to zero to get control over minrows
- * @param string $name ?
- * @param string $value ?
- * @param int $courseid ?
- * @todo Finish documenting this function
- */
- function print_textarea($usehtmleditor, $rows, $cols, $width, $height, $name, $value='', $courseid=0, $return=false, $id='') {
- /// $width and height are legacy fields and no longer used as pixels like they used to be.
- /// However, you can set them to zero to override the mincols and minrows values below.
- global $CFG, $COURSE, $HTTPSPAGEREQUIRED;
- static $scriptcount = 0; // For loading the htmlarea script only once.
- $mincols = 65;
- $minrows = 10;
- $str = '';
- if ($id === '') {
- $id = 'edit-'.$name;
- }
- if ( empty($CFG->editorsrc) ) { // for backward compatibility.
- if (empty($courseid)) {
- $courseid = $COURSE->id;
- }
- if ($usehtmleditor) {
- if (!empty($courseid) and has_capability('moodle/course:managefiles', get_context_instance(CONTEXT_COURSE, $courseid))) {
- $httpsrequired = empty($HTTPSPAGEREQUIRED) ? '' : '&httpsrequired=1';
- // needed for course file area browsing in image insert plugin
- $str .= ($scriptcount < 1) ? '<script type="text/javascript" src="'.
- $CFG->httpswwwroot .'/lib/editor/htmlarea/htmlarea.php?id='.$courseid.$httpsrequired.'"></script>'."\n" : '';
- } else {
- $httpsrequired = empty($HTTPSPAGEREQUIRED) ? '' : '?httpsrequired=1';
- $str .= ($scriptcount < 1) ? '<script type="text/javascript" src="'.
- $CFG->httpswwwroot .'/lib/editor/htmlarea/htmlarea.php'.$httpsrequired.'"></script>'."\n" : '';
- }
- $str .= ($scriptcount < 1) ? '<script type="text/javascript" src="'.
- $CFG->httpswwwroot .'/lib/editor/htmlarea/lang/en.php?id='.$courseid.'"></script>'."\n" : '';
- $scriptcount++;
- if ($height) { // Usually with legacy calls
- if ($rows < $minrows) {
- $rows = $minrows;
- }
- }
- if ($width) { // Usually with legacy calls
- if ($cols < $mincols) {
- $cols = $mincols;
- }
- }
- }
- }
- $str .= '<textarea class="form-textarea" id="'. $id .'" name="'. $name .'" rows="'. $rows .'" cols="'. $cols .'">';
- if ($usehtmleditor) {
- $str .= htmlspecialchars($value); // needed for editing of cleaned text!
- } else {
- $str .= s($value);
- }
- $str .= '</textarea>'."\n";
- if ($usehtmleditor) {
- // Show shortcuts button if HTML editor is in use, but only if JavaScript is enabled (MDL-9556)
- $str .= '<script type="text/javascript">
- //<![CDATA[
- document.write(\''.addslashes_js(editorshortcutshelpbutton()).'\');
- //]]>
- </script>';
- }
- if ($return) {
- return $str;
- }
- echo $str;
- }
- /**
- * Sets up the HTML editor on textareas in the current page.
- * If a field name is provided, then it will only be
- * applied to that field - otherwise it will be used
- * on every textarea in the page.
- *
- * In most cases no arguments need to be supplied
- *
- * @param string $name Form element to replace with HTMl editor by name
- */
- function use_html_editor($name='', $editorhidebuttons='', $id='') {
- global $THEME;
- $editor = 'editor_'.md5($name); //name might contain illegal characters
- if ($id === '') {
- $id = 'edit-'.$name;
- }
- echo "\n".'<script type="text/javascript" defer="defer">'."\n";
- echo '//<![CDATA['."\n\n"; // Extra \n is to fix odd wiki problem, MDL-8185
- echo "$editor = new HTMLArea('$id');\n";
- echo "var config = $editor.config;\n";
- echo print_editor_config($editorhidebuttons);
- if (empty($THEME->htmleditorpostprocess)) {
- if (empty($name)) {
- echo "\nHTMLArea.replaceAll($editor.config);\n";
- } else {
- echo "\n$editor.generate();\n";
- }
- } else {
- if (empty($name)) {
- echo "\nvar HTML_name = '';";
- } else {
- echo "\nvar HTML_name = \"$name;\"";
- }
- echo "\nvar HTML_editor = $editor;";
- }
- echo '//]]>'."\n";
- echo '</script>'."\n";
- }
- function print_editor_config($editorhidebuttons='', $return=false) {
- global $CFG;
- $str = "config.pageStyle = \"body {";
- if (!(empty($CFG->editorbackgroundcolor))) {
- $str .= " background-color: $CFG->editorbackgroundcolor;";
- }
- if (!(empty($CFG->editorfontfamily))) {
- $str .= " font-family: $CFG->editorfontfamily;";
- }
- if (!(empty($CFG->editorfontsize))) {
- $str .= " font-size: $CFG->editorfontsize;";
- }
- $str .= " }\";\n";
- $str .= "config.killWordOnPaste = ";
- $str .= (empty($CFG->editorkillword)) ? "false":"true";
- $str .= ';'."\n";
- $str .= 'config.fontname = {'."\n";
- $fontlist = isset($CFG->editorfontlist) ? explode(';', $CFG->editorfontlist) : array();
- $i = 1; // Counter is used to get rid of the last comma.
- foreach ($fontlist as $fontline) {
- if (!empty($fontline)) {
- if ($i > 1) {
- $str .= ','."\n";
- }
- list($fontkey, $fontvalue) = split(':', $fontline);
- $str .= '"'. $fontkey ."\":\t'". $fontvalue ."'";
- $i++;
- }
- }
- $str .= '};';
- if (!empty($editorhidebuttons)) {
- $str .= "\nconfig.hideSomeButtons(\" ". $editorhidebuttons ." \");\n";
- } else if (!empty($CFG->editorhidebuttons)) {
- $str .= "\nconfig.hideSomeButtons(\" ". $CFG->editorhidebuttons ." \");\n";
- }
- if (!empty($CFG->editorspelling) && !empty($CFG->aspellpath)) {
- $str .= print_speller_code($CFG->htmleditor, true);
- }
- if ($return) {
- return $str;
- }
- echo $str;
- }
- /**
- * Returns a turn edit on/off button for course in a self contained form.
- * Used to be an icon, but it's now a simple form button
- *
- * Note that the caller is responsible for capchecks.
- *
- * @uses $CFG
- * @uses $USER
- * @param int $courseid The course to update by id as found in 'course' table
- * @return string
- */
- function update_course_icon($courseid) {
- global $CFG, $USER;
- if (!empty($USER->editing)) {
- $string = get_string('turneditingoff');
- $edit = '0';
- } else {
- $string = get_string('turneditingon');
- $edit = '1';
- }
- return '<form '.$CFG->frametarget.' method="get" action="'.$CFG->wwwroot.'/course/view.php">'.
- '<div>'.
- '<input type="hidden" name="id" value="'.$courseid.'" />'.
- '<input type="hidden" name="edit" value="'.$edit.'" />'.
- '<input type="hidden" name="sesskey" value="'.sesskey().'" />'.
- '<input type="submit" value="'.$string.'" />'.
- '</div></form>';
- }
- /**
- * Returns a little popup menu for switching roles
- *
- * @uses $CFG
- * @uses $USER
- * @param int $courseid The course to update by id as found in 'course' table
- * @return string
- */
- function switchroles_form($courseid) {
- global $CFG, $USER;
- if (!$context = get_context_instance(CONTEXT_COURSE, $courseid)) {
- return '';
- }
- if (!empty($USER->access['rsw'][$context->path])){ // Just a button to return to normal
- $options = array();
- $options['id'] = $courseid;
- $options['sesskey'] = sesskey();
- $options['switchrole'] = 0;
- return print_single_button($CFG->wwwroot.'/course/view.php', $options,
- get_string('switchrolereturn'), 'post', '_self', true);
- }
- if (has_capability('moodle/role:switchroles', $context)) {
- if (!$roles = get_assignable_roles_for_switchrole($context)) {
- return ''; // Nothing to show!
- }
- // unset default user role - it would not work
- unset($roles[$CFG->guestroleid]);
- return popup_form($CFG->wwwroot.'/course/view.php?id='.$courseid.'&sesskey='.sesskey().'&switchrole=',
- $roles, 'switchrole', '', get_string('switchroleto'), 'switchrole', get_string('switchroleto'), true);
- }
- return '';
- }
- /**
- * Returns a turn edit on/off button for course in a self contained form.
- * Used to be an icon, but it's now a simple form button
- *
- * @uses $CFG
- * @uses $USER
- * @param int $courseid The course to update by id as found in 'course' table
- * @return string
- */
- function update_mymoodle_icon() {
- global $CFG, $USER;
- if (!empty($USER->editing)) {
- $string = get_string('updatemymoodleoff');
- $edit = '0';
- } else {
- $string = get_string('updatemymoodleon');
- $edit = '1';
- }
- return "<form $CFG->frametarget method=\"get\" action=\"$CFG->wwwroot/my/index.php\">".
- "<div>".
- "<input type=\"hidden\" name=\"edit\" value=\"$edit\" />".
- "<input type=\"submit\" value=\"$string\" /></div></form>";
- }
- /**
- * Returns a turn edit on/off button for tag in a self contained form.
- *
- * @uses $CFG
- * @uses $USER
- * @return string
- */
- function update_tag_button($tagid) {
- global $CFG, $USER;
- if (!empty($USER->editing)) {
- $string = get_string('turneditingoff');
- $edit = '0';
- } else {
- $string = get_string('turneditingon');
- $edit = '1';
- }
- return "<form $CFG->frametarget method=\"get\" action=\"$CFG->wwwroot/tag/index.php\">".
- "<div>".
- "<input type=\"hidden\" name=\"edit\" value=\"$edit\" />".
- "<input type=\"hidden\" name=\"id\" value=\"$tagid\" />".
- "<input type=\"submit\" value=\"$string\" /></div></form>";
- }
- /**
- * Prints the editing button on a module "view" page
- *
- * @uses $CFG
- * @param type description
- * @todo Finish documenting this function
- */
- function update_module_button($moduleid, $courseid, $string) {
- global $CFG, $USER;
- if (has_capability('moodle/course:manageactivities', get_context_instance(CONTEXT_MODULE, $moduleid))) {
- $string = get_string('updatethis', '', $string);
- return "<form $CFG->frametarget method=\"get\" action=\"$CFG->wwwroot/course/mod.php\" onsubmit=\"this.target='{$CFG->framename}'; return true\">".//hack to allow edit on framed resources
- "<div>".
- "<input type=\"hidden\" name=\"update\" value=\"$moduleid\" />".
- "<input type=\"hidden\" name=\"return\" value=\"true\" />".
- "<input type=\"hidden\" name=\"sesskey\" value=\"".sesskey()."\" />".
- "<input type=\"submit\" value=\"$string\" /></div></form>";
- } else {
- return '';
- }
- }
- /**
- * Prints the editing button on search results listing
- * For bulk move courses to another category
- */
- function update_categories_search_button($search,$page,$perpage) {
- global $CFG, $USER;
- // not sure if this capability is the best here
- if (has_capability('moodle/category:manage', get_context_instance(CONTEXT_SYSTEM))) {
- if (!empty($USER->categoryediting)) {
- $string = get_string("turneditingoff");
- $edit = "off";
- $perpage = 30;
- } else {
- $string = get_string("turneditingon");
- $edit = "on";
- }
- return "<form $CFG->frametarget method=\"get\" action=\"$CFG->wwwroot/course/search.php\">".
- '<div>'.
- "<input type=\"hidden\" name=\"edit\" value=\"$edit\" />".
- "<input type=\"hidden\" name=\"sesskey\" value=\"$USER->sesskey\" />".
- "<input type=\"hidden\" name=\"search\" value=\"".s($search, true)."\" />".
- "<input type=\"hidden\" name=\"page\" value=\"$page\" />".
- "<input type=\"hidden\" name=\"perpage\" value=\"$perpage\" />".
- "<input type=\"submit\" value=\"".s($string)."\" /></div></form>";
- }
- }
- /**
- * Given a course and a (current) coursemodule
- * This function returns a small popup menu with all the
- * course activity modules in it, as a navigation menu
- * The data is taken from the serialised array stored in
- * the course record
- *
- * @param course $course A {@link $COURSE} object.
- * @param course $cm A {@link $COURSE} object.
- * @param string $targetwindow ?
- * @return string
- * @todo Finish documenting this function
- */
- function navmenu($course, $cm=NULL, $targetwindow='self') {
- global $CFG, $THEME, $USER;
- if (empty($THEME->navmenuwidth)) {
- $width = 50;
- } else {
- $width = $THEME->navmenuwidth;
- }
- if ($cm) {
- $cm = $cm->id;
- }
- if ($course->format == 'weeks') {
- $strsection = get_string('week');
- } else {
- $strsection = get_string('topic');
- }
- $strjumpto = get_string('jumpto');
- $modinfo = get_fast_modinfo($course);
- $context = get_context_instance(CONTEXT_COURSE, $course->id);
- $section = -1;
- $selected = '';
- $url = '';
- $previousmod = NULL;
- $backmod = NULL;
- $nextmod = NULL;
- $selectmod = NULL;
- $logslink = NULL;
- $flag = false;
- $menu = array();
- $menustyle = array();
- $sections = get_records('course_sections','course',$course->id,'section','section,visible,summary');
- if (!empty($THEME->makenavmenulist)) { /// A hack to produce an XHTML navmenu list for use in themes
- $THEME->navmenulist = navmenulist($course, $sections, $modinfo, $strsection, $strjumpto, $width, $cm);
- }
- foreach ($modinfo->cms as $mod) {
- if ($mod->modname == 'label') {
- continue;
- }
- if ($mod->sectionnum > $course->numsections) { /// Don't show excess hidden sections
- break;
- }
- if (!$mod->uservisible) { // do not icnlude empty sections at all
- continue;
- }
- if ($mod->sectionnum > 0 and $section != $mod->sectionnum) {
- $thissection = $sections[$mod->sectionnum];
- if ($thissection->visible or !$course->hiddensections or
- has_capability('moodle/course:viewhiddensections', $context)) {
- $thissection->summary = strip_tags(format_string($thissection->summary,true));
- if ($course->format == 'weeks' or empty($thissection->summary)) {
- $menu[] = '--'.$strsection ." ". $mod->sectionnum;
- } else {
- if (strlen($thissection->summary) < ($width-3)) {
- $menu[] = '--'.$thissection->summary;
- } else {
- $menu[] = '--'.substr($thissection->summary, 0, $width).'...';
- }
- }
- $section = $mod->sectionnum;
- } else {
- // no activities from this hidden section shown
- continue;
- }
- }
- $url = $mod->modname.'/view.php?id='. $mod->id;
- if ($flag) { // the current mod is the "next" mod
- $nextmod = $mod;
- $flag = false;
- }
- $localname = $mod->name;
- if ($cm == $mod->id) {
- $selected = $url;
- $selectmod = $mod;
- $backmod = $previousmod;
- $flag = true; // set flag so we know to use next mod for "next"
- $localname = $strjumpto;
- $strjumpto = '';
- } else {
- $localname = strip_tags(format_string($localname,true));
- $tl=textlib_get_instance();
- if ($tl->strlen($localname) > ($width+5)) {
- $localname = $tl->substr($localname, 0, $width).'...';
- }
- if (!$mod->visible) {
- $localname = '('.$localname.')';
- }
- }
- $menu[$url] = $localname;
- if (empty($THEME->navmenuiconshide)) {
- $menustyle[$url] = 'style="background-image: url('.$CFG->modpixpath.'/'.$mod->modname.'/icon.gif);"'; // Unfortunately necessary to do this here
- }
- $previousmod = $mod;
- }
- //Accessibility: added Alt text, replaced > < with 'silent' character and 'accesshide' text.
- if ($selectmod and has_capability('coursereport/log:view', $context)) {
- $logstext = get_string('alllogs');
- $logslink = '<li>'."\n".'<a title="'.$logstext.'" '.
- $CFG->frametarget.' onclick="this.target=\''.$CFG->framename.'\';"'.' href="'.
- $CFG->wwwroot.'/course/report/log/index.php?chooselog=1&user=0&date=0&id='.
- $course->id.'&modid='.$selectmod->id.'">'.
- '<img class="icon log" src="'.$CFG->pixpath.'/i/log.gif" alt="'.$logstext.'" /></a>'."\n".'</li>';
- }
- if ($backmod) {
- $backtext= get_string('activityprev', 'access');
- $backmod = '<li><form action="'.$CFG->wwwroot.'/mod/'.$backmod->modname.'/view.php" '.$CFG->frametarget.' '.
- 'onclick="this.target=\''.$CFG->framename.'\';"'.'><fieldset class="invisiblefieldset">'.
- '<input type="hidden" name="id" value="'.$backmod->id.'" />'.
- '<button type="submit" title="'.$backtext.'">'.link_arrow_left($backtext, $url='', $accesshide=true).
- '</button></fieldset></form></li>';
- }
- if ($nextmod) {
- $nexttext= get_string('activitynext', 'access');
- $nextmod = '<li><form action="'.$CFG->wwwroot.'/mod/'.$nextmod->modname.'/view.php" '.$CFG->frametarget.' '.
- 'onclick="this.target=\''.$CFG->framename.'\';"'.'><fieldset class="invisiblefieldset">'.
- '<input type="hidden" name="id" value="'.$nextmod->id.'" />'.
- '<button type="submit" title="'.$nexttext.'">'.link_arrow_right($nexttext, $url='', $accesshide=true).
- '</button></fieldset></form></li>';
- }
- return '<div class="navigation">'."\n".'<ul>'.$logslink . $backmod .
- '<li>'.popup_form($CFG->wwwroot .'/mod/', $menu, 'navmenupopup', $selected, $strjumpto,
- '', '', true, $targetwindow, '', $menustyle).'</li>'.
- $nextmod . '</ul>'."\n".'</div>';
- }
- /**
- * Given a course
- * This function returns a small popup menu with all the
- * course activity modules in it, as a navigation menu
- * outputs a simple list structure in XHTML
- * The data is taken from the serialised array stored in
- * the course record
- *
- * @param course $course A {@link $COURSE} object.
- * @return string
- * @todo Finish documenting this function
- */
- function navmenulist($course, $sections, $modinfo, $strsection, $strjumpto, $width=50, $cmid=0) {
- global $CFG;
- $section = -1;
- $url = '';
- $menu = array();
- $doneheading = false;
- $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
- $menu[] = '<ul class="navmenulist"><li class="jumpto section"><span>'.$strjumpto.'</span><ul>';
- foreach ($modinfo->cms as $mod) {
- if ($mod->modname == 'label') {
- continue;
- }
- if ($mod->sectionnum > $course->numsections) { /// Don't show excess hidden sections
- break;
- }
- if (!$mod->uservisible) { // do not icnlude empty sections at all
- continue;
- }
- if ($mod->sectionnum >= 0 and $section != $mod->sectionnum) {
- $thissection = $sections[$mod->sectionnum];
- if ($thissection->visible or !$course->hiddensections or
- has_capability('moodle/course:viewhiddensections', $coursecontext)) {
- $thissection->summary = strip_tags(format_string($thissection->summary,true));
- if (!$doneheading) {
- $menu[] = '</ul></li>';
- }
- if ($course->format == 'weeks' or empty($thissection->summary)) {
- $item = $strsection ." ". $mod->sectionnum;
- } else {
- if (strlen($thissection->summary) < ($width-3)) {
- $item = $thissection->summary;
- } else {
- $item = substr($thissection->summary, 0, $width).'...';
- }
- }
- $menu[] = '<li class="section"><span>'.$item.'</span>';
- $menu[] = '<ul>';
- $doneheading = true;
- $section = $mod->sectionnum;
- } else {
- // no activities from this hidden section shown
- continue;
- }
- }
- $url = $mod->modname .'/view.php?id='. $mod->id;
- $mod->name = strip_tags(format_string(urldecode($mod->name),true));
- if (strlen($mod->name) > ($width+5)) {
- $mod->name = substr($mod->name, 0, $width).'...';
- }
- if (!$mod->visible) {
- $mod->name = '('.$mod->name.')';
- }
- $class = 'activity '.$mod->modname;
- $class .= ($cmid == $mod->id) ? ' selected' : '';
- $menu[] = '<li class="'.$class.'">'.
- '<img src="'.$CFG->modpixpath.'/'.$mod->modname.'/icon.gif" alt="" />'.
- '<a href="'.$CFG->wwwroot.'/mod/'.$url.'">'.$mod->name.'</a></li>';
- }
- if ($doneheading) {
- $menu[] = '</ul></li>';
- }
- $menu[] = '</ul></li></ul>';
- return implode("\n", $menu);
- }
- /**
- * Prints form items with the names $day, $month and $year
- *
- * @param string $day fieldname
- * @param string $month fieldname
- * @param string $year fieldname
- * @param int $currenttime A default timestamp in GMT
- * @param boolean $return
- */
- function print_date_selector($day, $month, $year, $currenttime=0, $return=false) {
- if (!$currenttime) {
- $currenttime = time();
- }
- $currentdate = usergetdate($currenttime);
- for ($i=1; $i<=31; $i++) {
- $days[$i] = $i;
- }
- for ($i=1; $i<=12; $i++) {
- $months[$i] = userdate(gmmktime(12,0,0,$i,15,2000), "%B");
- }
- for ($i=1970; $i<=2020; $i++) {
- $years[$i] = $i;
- }
- // Build or print result
- $result='';
- // Note: There should probably be a fieldset around these fields as they are
- // clearly grouped. However this causes problems with display. See Mozilla
- // bug 474415
- $result.='<label class="accesshide" for="menu'.$day.'">'.get_string('day','form').'</label>';
- $result.=choose_from_menu($days, $day, $currentdate['mday'], '', '', '0', true);
- $result.='<label class="accesshide" for="menu'.$month.'">'.get_string('month','form').'</label>';
- $result.=choose_from_menu($months, $month, $currentdate['mon'], '', '', '0', true);
- $result.='<label class="accesshide" for="menu'.$year.'">'.get_string('year','form').'</label>';
- $result.=choose_from_menu($years, $year, $currentdate['year'], '', '', '0', true);
- if ($return) {
- return $result;
- } else {
- echo $result;
- }
- }
- /**
- *Prints form items with the names $hour and $minute
- *
- * @param string $hour fieldname
- * @param string ? $minute fieldname
- * @param $currenttime A default timestamp in GMT
- * @param int $step minute spacing
- * @param boolean $return
- */
- function print_time_selector($hour, $minute, $currenttime=0, $step=5, $return=false) {
- if (!$currenttime) {
- $currenttime = time();
- }
- $currentdate = usergetdate($currenttime);
- if ($step != 1) {
- $currentdate['minutes'] = ceil($currentdate['minutes']/$step)*$step;
- }
- for ($i=0; $i<=23; $i++) {
- $hours[$i] = sprintf("%02d",$i);
- }
- for ($i=0; $i<=59; $i+=$step) {
- $minutes[$i] = sprintf("%02d",$i);
- }
- // Build or print result
- $result='';
- // Note: There should probably be a fieldset around these fields as they are
- // clearly grouped. However this causes problems with display. See Mozilla
- // bug 474415
- $result.='<label class="accesshide" for="menu'.$hour.'">'.get_string('hour','form').'</label>';
- $result.=choose_from_menu($hours, $hour, $currentdate['hours'], '','','0',true);
- $result.='<label class="accesshide" for="menu'.$minute.'">'.get_string('minute','form').'</label>';
- $result.=choose_from_menu($minutes, $minute, $currentdate['minutes'], '','','0',true);
- if ($return) {
- return $result;
- } else {
- echo $result;
- }
- }
- /**
- * Prints time limit value selector
- *
- * @uses $CFG
- * @param int $timelimit default
- * @param string $unit
- * @param string $name
- * @param boolean $return
- */
- function print_timer_selector($timelimit = 0, $unit = '', $name = 'timelimit', $return=false) {
- global $CFG;
- if ($unit) {
- $unit = ' '.$unit;
- }
- // Max timelimit is sessiontimeout - 10 minutes.
- $maxvalue = ($CFG->sessiontimeout / 60) - 10;
- for ($i=1; $i<=$maxvalue; $i++) {
- $minutes[$i] = $i.$unit;
- }
- return choose_from_menu($minutes, $name, $timelimit, get_string('none'), '','','0',$return);
- }
- /**
- * Prints a grade menu (as part of an existing form) with help
- * Showing all possible numerical grades and scales
- *
- * @uses $CFG
- * @param int $courseid ?
- * @param string $name ?
- * @param string $current ?
- * @param boolean $includenograde ?
- * @todo Finish documenting this function
- */
- function print_grade_menu($courseid, $name, $current, $includenograde=true, $return=false) {
- global $CFG;
- $output = '';
- $strscale = get_string('scale');
- $strscales = get_string('scales');
- $scales = get_scales_menu($courseid);
- foreach ($scales as $i => $scalename) {
- $grades[-$i] = $strscale .': '. $scalename;
- }
- if ($includenograde) {
- $grades[0] = get_string('nograde');
- }
- for ($i=100; $i>=1; $i--) {
- $grades[$i] = $i;
- }
- $output .= choose_from_menu($grades, $name, $current, '', '', 0, true);
- $linkobject = '<span class="helplink"><img class="iconhelp" alt="'.$strscales.'" src="'.$CFG->pixpath .'/help.gif" /></span>';
- $output .= link_to_popup_window ('/course/scales.php?id='. $courseid .'&list=true', 'ratingscales',
- $linkobject, 400, 500, $strscales, 'none', true);
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Prints a scale menu (as part of an existing form) including help button
- * Just like {@link print_grade_menu()} but without the numeric grades
- *
- * @param int $courseid ?
- * @param string $name ?
- * @param string $current ?
- * @todo Finish documenting this function
- */
- function print_scale_menu($courseid, $name, $current, $return=false) {
- global $CFG;
- $output = '';
- $strscales = get_string('scales');
- $output .= choose_from_menu(get_scales_menu($courseid), $name, $current, '', '', 0, true);
- $linkobject = '<span class="helplink"><img class="iconhelp" alt="'.$strscales.'" src="'.$CFG->pixpath .'/help.gif" /></span>';
- $output .= link_to_popup_window ('/course/scales.php?id='. $courseid .'&list=true', 'ratingscales',
- $linkobject, 400, 500, $strscales, 'none', true);
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Prints a help button about a scale
- *
- * @uses $CFG
- * @param id $courseid ?
- * @param object $scale ?
- * @todo Finish documenting this function
- */
- function print_scale_menu_helpbutton($courseid, $scale, $return=false) {
- global $CFG;
- $output = '';
- $strscales = get_string('scales');
- $linkobject = '<span class="helplink"><img class="iconhelp" alt="'.$scale->name.'" src="'.$CFG->pixpath .'/help.gif" /></span>';
- $output .= link_to_popup_window ('/course/scales.php?id='. $courseid .'&list=true&scaleid='. $scale->id, 'ratingscale',
- $linkobject, 400, 500, $scale->name, 'none', true);
- if ($return) {
- return $output;
- } else {
- echo $output;
- }
- }
- /**
- * Print an error page displaying an error message. New method - use this for new code.
- *
- * @uses $SESSION
- * @uses $CFG
- * @param string $errorcode The name of the string from error.php (or other specified file) to print
- * @param string $link The url where the user will be prompted to continue. If no url is provided the user will be directed to the site index page.
- * @param object $a Extra words and phrases that might be required in the error string
- * @param array $extralocations An array of strings with other locations to look for string files
- * @return does not return, terminates script
- */
- function print_error($errorcode, $module='error', $link='', $a=NULL, $extralocations=NULL) {
- global $CFG, $SESSION, $THEME;
- if (empty($module) || $module === 'moodle' || $module === 'core') {
- $module = 'error';
- }
- $message = get_string($errorcode, $module, $a, $extralocations);
- if ($module === 'error' and strpos($message, '[[') === 0) {
- //search in moodle file if error specified - needed for backwards compatibility
- $message = get_string($errorcode, 'moodle', $a, $extralocations);
- }
- if (empty($link) and !defined('ADMIN_EXT_HEADER_PRINTED')) {
- if ( !empty($SESSION->fromurl) ) {
- $link = $SESSION->fromurl;
- unset($SESSION->fromurl);
- } else {
- $link = $CFG->wwwroot .'/';
- }
- }
- if (!empty($CFG->errordocroot)) {
- $errordocroot = $CFG->errordocroot;
- } else if (!empty($CFG->docroot)) {
- $errordocroot = $CFG->docroot;
- } else {
- $errordocroot = 'http://docs.moodle.org';
- }
- if (defined('FULLME') && FULLME == 'cron') {
- // Errors in cron should be mtrace'd.
- mtrace($message);
- die;
- }
- if ($module === 'error') {
- $modulelink = 'moodle';
- } else {
- $modulelink = $module;
- }
- $message = clean_text('<p class="errormessage">'.$message.'</p>'.
- '<p class="errorcode">'.
- '<a href="'.$errordocroot.'/en/error/'.$modulelink.'/'.$errorcode.'">'.
- get_string('moreinformation').'</a></p>');
- if (! defined('HEADER_PRINTED')) {
- //header not yet printed
- @header('HTTP/1.0 404 Not Found');
- print_header(get_string('error'));
- } else {
- print_container_end_all(false, $THEME->open_header_containers);
- }
- echo '<br />';
- print_simple_box($message, '', '', '', '', 'errorbox');
- debugging('Stack trace:', DEBUG_DEVELOPER);
- // in case we are logging upgrade in admin/index.php stop it
- if (function_exists('upgrade_log_finish')) {
- upgrade_log_finish();
- }
- if (!empty($link)) {
- print_continue($link);
- }
- print_footer();
- for ($i=0;$i<512;$i++) { // Padding to help IE work with 404
- echo ' ';
- }
- die;
- }
- /**
- * Print an error to STDOUT and exit with a non-zero code. For commandline scripts.
- * Default errorcode is 1.
- *
- * Very useful for perl-like error-handling:
- *
- * do_somethting() or mdie("Something went wrong");
- *
- * @param string $msg Error message
- * @param integer $errorcode Error code to emit
- */
- function mdie($msg='', $errorcode=1) {
- trigger_error($msg);
- exit($errorcode);
- }
- /**
- * Returns a string of html with an image of a help icon linked to a help page on a number of help topics.
- * Should be used only with htmleditor or textarea.
- * @param mixed $helptopics variable amount of params accepted. Each param may be a string or an array of arguments for
- * helpbutton.
- * @return string
- */
- function editorhelpbutton(){
- global $CFG, $SESSION;
- $items = func_get_args();
- $i = 1;
- $urlparams = array();
- $titles = array();
- foreach ($items as $item){
- if (is_array($item)){
- $urlparams[] = "keyword$i=".urlencode($item[0]);
- $urlparams[] = "title$i=".urlencode($item[1]);
- if (isset($item[2])){
- $urlparams[] = "module$i=".urlencode($item[2]);
- }
- $titles[] = trim($item[1], ". \t");
- }elseif (is_string($item)){
- $urlparams[] = "button$i=".urlencode($item);
- switch ($item){
- case 'reading' :
- $titles[] = get_string("helpreading");
- break;
- case 'writing' :
- $titles[] = get_string("helpwriting");
- break;
- case 'questions' :
- $titles[] = get_string("helpquestions");
- break;
- case 'emoticons' :
- $titles[] = get_string("helpemoticons");
- break;
- case 'richtext' :
- $titles[] = get_string('helprichtext');
- break;
- case 'text' :
- $titles[] = get_string('helptext');
- break;
- default :
- error('Unknown help topic '.$item);
- }
- }
- $i++;
- }
- if (count($titles)>1){
- //join last two items with an 'and'
- $a = new object();
- $a->one = $titles[count($titles) - 2];
- $a->two = $titles[count($titles) - 1];
- $titles[count($titles) - 2] = get_string('and', '', $a);
- unset($titles[count($titles) - 1]);
- }
- $alttag = join (', ', $titles);
- $paramstring = join('&', $urlparams);
- $linkobject = '<img alt="'.$alttag.'" class="iconhelp" src="'.$CFG->pixpath .'/help.gif" />';
- return link_to_popup_window(s('/lib/form/editorhelp.php?'.$paramstring), 'popup', $linkobject, 400, 500, $alttag, 'none', true);
- }
- /**
- * Print a help button.
- *
- * @uses $CFG
- * @param string $page The keyword that defines a help page
- * @param string $title The title of links, rollover tips, alt tags etc
- * 'Help with' (or the language equivalent) will be prefixed and '...' will be stripped.
- * @param string $module Which module is the page defined in
- * @param mixed $image Use a help image for the link? (true/false/"both")
- * @param boolean $linktext If true, display the title next to the help icon.
- * @param string $text If defined then this text is used in the page, and
- * the $page variable is ignored.
- * @param boolean $return If true then the output is returned as a string, if false it is printed to the current page.
- * @param string $imagetext The full text for the helpbutton icon. If empty use default help.gif
- * @return string
- * @todo Finish documenting this function
- */
- function helpbutton ($page, $title, $module='moodle', $image=true, $linktext=false, $text='', $return=false,
- $imagetext='') {
- global $CFG, $COURSE;
- //warning if ever $text parameter is used
- //$text option won't work properly because the text needs to be always cleaned and,
- // when cleaned... html tags always break, so it's unusable.
- if ( isset($text) && $text!='') {
- debugging('Warning: it\'s not recommended to use $text parameter in helpbutton ($page=' . $page . ', $module=' . $module . ') function', DEBUG_DEVELOPER);
- }
- // fix for MDL-7734
- if (!empty($COURSE->lang)) {
- $forcelang = $COURSE->lang;
- } else {
- $forcelang = '';
- }
- if ($module == '') {
- $module = 'moodle';
- }
- if ($title == '' && $linktext == '') {
- debugging('Error in call to helpbutton function: at least one of $title and $linktext is required');
- }
- // Warn users about new window for Accessibility
- $tooltip = get_string('helpprefix2', '', trim($title, ". \t")) .' ('.get_string('newwindow').')';
- $linkobject = '';
- if ($image) {
- if ($linktext) {
- // MDL-7469 If text link is displayed with help icon, change to alt to "help with this".
- $linkobject .= $title.' ';
- $tooltip = get_string('helpwiththis');
- }
- if ($imagetext) {
- $linkobject .= $imagetext;
- } else {
- $linkobject .= '<img class="iconhelp" alt="'.s(strip_tags($tooltip)).'" src="'.
- $CFG->pixpath .'/help.gif" />';
- }
- } else {
- $linkobject .= $tooltip;
- }
- // fix for MDL-7734
- if ($text) {
- $url = '/help.php?module='. $module .'&text='. s(urlencode($text).'&forcelang='.$forcelang);
- } else {
- $url = '/help.php?module='. $module .'&file='. $page .'.html&forcelang='.$forcelang;
- }
- $link = '<span class="helplink">'.
- link_to_popup_window ($url, 'popup', $linkobject, 400, 500, $tooltip, 'none', true).
- '</span>';
- if ($return) {
- return $link;
- } else {
- echo $link;
- }
- }
- /**
- * Print a help button.
- *
- * Prints a special help button that is a link to the "live" emoticon popup
- * @uses $CFG
- * @uses $SESSION
- * @param string $form ?
- * @param string $field ?
- * @todo Finish documenting this function
- */
- function emoticonhelpbutton($form, $field, $return = false) {
- global $CFG, $SESSION;
- $SESSION->inserttextform = $form;
- $SESSION->inserttextfield = $field;
- $imagetext = '<img src="' . $CFG->pixpath . '/s/smiley.gif" alt="" class="emoticon" style="margin-left:3px; padding-right:1px;width:15px;height:15px;" />';
- $help = helpbutton('emoticons', get_string('helpemoticons'), 'moodle', true, true, '', true, $imagetext);
- if (!$return){
- echo $help;
- } else {
- return $help;
- }
- }
- /**
- * Print a help button.
- *
- * Prints a special help button for html editors (htmlarea in this case)
- * @uses $CFG
- */
- function editorshortcutshelpbutton() {
- global $CFG;
- $imagetext = '<img src="' . $CFG->httpswwwroot . '/lib/editor/htmlarea/images/kbhelp.gif" alt="'.
- get_string('editorshortcutkeys').'" class="iconkbhelp" />';
- return helpbutton('editorshortcuts', get_string('editorshortcutkeys'), 'moodle', true, false, '', true, $imagetext);
- }
- /**
- * Print a message and exit.
- *
- * @uses $CFG
- * @param string $message ?
- * @param string $link ?
- * @todo Finish documenting this function
- */
- function notice ($message, $link='', $course=NULL) {
- global $CFG, $SITE, $THEME, $COURSE;
- $message = clean_text($message); // In case nasties are in here
- if (defined('FULLME') && FULLME == 'cron') {
- // notices in cron should be mtrace'd.
- mtrace($message);
- die;
- }
- if (! defined('HEADER_PRINTED')) {
- //header not yet printed
- print_header(get_string('notice'));
- } else {
- print_container_end_all(false, $THEME->open_header_containers);
- }
- print_box($message, 'generalbox', 'notice');
- print_continue($link);
- if (empty($course)) {
- print_footer($COURSE);
- } else {
- print_footer($course);
- }
- exit;
- }
- /**
- * Print a message along with "Yes" and "No" links for the user to continue.
- *
- * @param string $message The text to display
- * @param string $linkyes The link to take the user to if they choose "Yes"
- * @param string $linkno The link to take the user to if they choose "No"
- * TODO Document remaining arguments
- */
- function notice_yesno ($message, $linkyes, $linkno, $optionsyes=NULL, $optionsno=NULL, $methodyes='post', $methodno='post') {
- global $CFG;
- $message = clean_text($message);
- $linkyes = clean_text($linkyes);
- $linkno = clean_text($linkno);
- print_box_start('generalbox', 'notice');
- echo '<p>'. $message .'</p>';
- echo '<div class="buttons">';
- print_single_button($linkyes, $optionsyes, get_string('yes'), $methodyes, $CFG->framename);
- print_single_button($linkno, $optionsno, get_string('no'), $methodno, $CFG->framename);
- echo '</div>';
- print_box_end();
- }
- /**
- * Provide an definition of error_get_last for PHP before 5.2.0. This simply
- * returns NULL, since there is not way to get the right answer.
- */
- if (!function_exists('error_get_last')) {
- // the eval is needed to prevent PHP 5.2+ from getting a parse error!
- eval('
- function error_get_last() {
- return NULL;
- }
- ');
- }
- /**
- * Redirects the user to another page, after printing a notice
- *
- * @param string $url The url to take the user to
- * @param string $message The text message to display to the user about the redirect, if any
- * @param string $delay How long before refreshing to the new page at $url?
- * @todo '&' needs to be encoded into '&' for XHTML compliance,
- * however, this is not true for javascript. Therefore we
- * first decode all entities in $url (since we cannot rely on)
- * the correct input) and then encode for where it's needed
- * echo "<script type='text/javascript'>alert('Redirect $url');</script>";
- */
- function redirect($url, $message='', $delay=-1) {
- global $CFG, $THEME;
- if (!empty($CFG->usesid) && !isset($_COOKIE[session_name()])) {
- $url = sid_process_url($url);
- }
- $message = clean_text($message);
- $encodedurl = preg_replace("/\&(?![a-zA-Z0-9#]{1,8};)/", "&", $url);
- $encodedurl = preg_replace('/^.*href="([^"]*)".*$/', "\\1", clean_text('<a href="'.$encodedurl.'" />'));
- $url = str_replace('&', '&', $encodedurl);
- /// At developer debug level. Don't redirect if errors have been printed on screen.
- /// Currenly only works in PHP 5.2+; we do not want strict PHP5 errors
- $lasterror = error_get_last();
- $error = defined('DEBUGGING_PRINTED') or (!empty($lasterror) && ($lasterror['type'] & DEBUG_DEVELOPER));
- $errorprinted = debugging('', DEBUG_ALL) && $CFG->debugdisplay && $error;
- if ($errorprinted) {
- $message = "<strong>Error output, so disabling automatic redirect.</strong></p><p>" . $message;
- }
- $performanceinfo = '';
- if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
- if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
- $perf = get_performance_info();
- error_log("PERF: " . $perf['txt']);
- }
- }
- /// when no message and header printed yet, try to redirect
- if (empty($message) and !defined('HEADER_PRINTED')) {
- // Technically, HTTP/1.1 requires Location: header to contain
- // the absolute path. (In practice browsers accept relative
- // paths - but still, might as well do it properly.)
- // This code turns relative into absolute.
- if (!preg_match('|^[a-z]+:|', $url)) {
- // Get host name http://www.wherever.com
- $hostpart = preg_replace('|^(.*?[^:/])/.*$|', '$1', $CFG->wwwroot);
- if (preg_match('|^/|', $url)) {
- // URLs beginning with / are relative to web server root so we just add them in
- $url = $hostpart.$url;
- } else {
- // URLs not beginning with / are relative to path of current script, so add that on.
- $url = $hostpart.preg_replace('|\?.*$|','',me()).'/../'.$url;
- }
- // Replace all ..s
- while (true) {
- $newurl = preg_replace('|/(?!\.\.)[^/]*/\.\./|', '/', $url);
- if ($newurl == $url) {
- break;
- }
- $url = $newurl;
- }
- }
- $delay = 0;
- //try header redirection first
- @header($_SERVER['SERVER_PROTOCOL'] . ' 303 See Other'); //302 might not work for POST requests, 303 is ignored by obsolete clients
- @header('Location: '.$url);
- //another way for older browsers and already sent headers (eg trailing whitespace in config.php)
- echo '<meta http-equiv="refresh" content="'. $delay .'; url='. $encodedurl .'" />';
- echo '<script type="text/javascript">'. "\n" .'//<![CDATA['. "\n". "location.replace('".addslashes_js($url)."');". "\n". '//]]>'. "\n". '</script>'; // To cope with Mozilla bug
- die;
- }
- if ($delay == -1) {
- $delay = 3; // if no delay specified wait 3 seconds
- }
- if (! defined('HEADER_PRINTED')) {
- // this type of redirect might not be working in some browsers - such as lynx :-(
- print_header('', '', '', '', $errorprinted ? '' : ('<meta http-equiv="refresh" content="'. $delay .'; url='. $encodedurl .'" />'));
- $delay += 3; // double redirect prevention, it was sometimes breaking upgrades before 1.7
- } else {
- print_container_end_all(false, $THEME->open_header_containers);
- }
- echo '<div id="redirect">';
- echo '<div id="message">' . $message . '</div>';
- echo '<div id="continue">( <a href="'. $encodedurl .'">'. get_string('continue') .'</a> )</div>';
- echo '</div>';
- if (!$errorprinted) {
- ?>
- <script type="text/javascript">
- //<![CDATA[
- function redirect() {
- document.location.replace('<?php echo addslashes_js($url) ?>');
- }
- setTimeout("redirect()", <?php echo ($delay * 1000) ?>);
- //]]>
- </script>
- <?php
- }
- $CFG->docroot = false; // to prevent the link to moodle docs from being displayed on redirect page.
- print_footer('none');
- die;
- }
- /**
- * Print a bold message in an optional color.
- *
- * @param string $message The message to print out
- * @param string $style Optional style to display message text in
- * @param string $align Alignment option
- * @param bool $return whether to return an output string or echo now
- */
- function notify($message, $style='notifyproblem', $align='center', $return=false) {
- if ($style == 'green') {
- $style = 'notifysuccess'; // backward compatible with old color system
- }
- $message = clean_text($message);
- $output = '<div class="'.$style.'" style="text-align:'. $align .'">'. $message .'</div>'."\n";
- if ($return) {
- return $output;
- }
- echo $output;
- }
- /**
- * Given an email address, this function will return an obfuscated version of it
- *
- * @param string $email The email address to obfuscate
- * @return string
- */
- function obfuscate_email($email) {
- $i = 0;
- $length = strlen($email);
- $obfuscated = '';
- while ($i < $length) {
- if (rand(0,2)) {
- $obfuscated.='%'.dechex(ord($email{$i}));
- } else {
- $obfuscated.=$email{$i};
- }
- $i++;
- }
- return $obfuscated;
- }
- /**
- * This function takes some text and replaces about half of the characters
- * with HTML entity equivalents. Return string is obviously longer.
- *
- * @param string $plaintext The text to be obfuscated
- * @return string
- */
- function obfuscate_text($plaintext) {
- $i=0;
- $length = strlen($plaintext);
- $obfuscated='';
- $prev_obfuscated = false;
- while ($i < $length) {
- $c = ord($plaintext{$i});
- $numerical = ($c >= ord('0')) && ($c <= ord('9'));
- if ($prev_obfuscated and $numerical ) {
- $obfuscated.='&#'.ord($plaintext{$i}).';';
- } else if (rand(0,2)) {
- $obfuscated.='&#'.ord($plaintext{$i}).';';
- $prev_obfuscated = true;
- } else {
- $obfuscated.=$plaintext{$i};
- $prev_obfuscated = false;
- }
- $i++;
- }
- return $obfuscated;
- }
- /**
- * This function uses the {@link obfuscate_email()} and {@link obfuscate_text()}
- * to generate a fully obfuscated email link, ready to use.
- *
- * @param string $email The email address to display
- * @param string $label The text to dispalyed as hyperlink to $email
- * @param boolean $dimmed If true then use css class 'dimmed' for hyperlink
- * @return string
- */
- function obfuscate_mailto($email, $label='', $dimmed=false) {
- if (empty($label)) {
- $label = $email;
- }
- if ($dimmed) {
- $title = get_string('emaildisable');
- $dimmed = ' class="dimmed"';
- } else {
- $title = '';
- $dimmed = '';
- }
- return sprintf("<a href=\"%s:%s\" $dimmed title=\"$title\">%s</a>",
- obfuscate_text('mailto'), obfuscate_email($email),
- obfuscate_text($label));
- }
- /**
- * Prints a single paging bar to provide access to other pages (usually in a search)
- *
- * @param int $totalcount Thetotal number of entries available to be paged through
- * @param int $page The page you are currently viewing
- * @param int $perpage The number of entries that should be shown per page
- * @param mixed $baseurl If this is a string then it is the url which will be appended with $pagevar, an equals sign and the page number.
- * If this is a moodle_url object then the pagevar param will be replaced by the page no, for each page.
- * @param string $pagevar This is the variable name that you use for the page number in your code (ie. 'tablepage', 'blogpage', etc)
- * @param bool $nocurr do not display the current page as a link
- * @param bool $return whether to return an output string or echo now
- * @return bool or string
- */
- function print_paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar='page',$nocurr=false, $return=false) {
- $maxdisplay = 18;
- $output = '';
- if ($totalcount > $perpage) {
- $output .= '<div class="paging">';
- $output .= get_string('page') .':';
- if ($page > 0) {
- $pagenum = $page - 1;
- if (!is_a($baseurl, 'moodle_url')){
- $output .= ' (<a class="previous" href="'. $baseurl . $pagevar .'='. $pagenum .'">'. get_string('previous') .'</a>) ';
- } else {
- $output .= ' (<a class="previous" href="'. $baseurl->out(false, array($pagevar => $pagenum)).'">'. get_string('previous') .'</a>) ';
- }
- }
- if ($perpage > 0) {
- $lastpage = ceil($totalcount / $perpage);
- } else {
- $lastpage = 1;
- }
- if ($page > 15) {
- $startpage = $page - 10;
- if (!is_a($baseurl, 'moodle_url')){
- $output .= ' <a href="'. $baseurl . $pagevar .'=0">1</a> ...';
- } else {
- $output .= ' <a href="'. $baseurl->out(false, array($pagevar => 0)).'">1</a> ...';
- }
- } else {
- $startpage = 0;
- }
- $currpage = $startpage;
- $displaycount = $displaypage = 0;
- while ($displaycount < $maxdisplay and $currpage < $lastpage) {
- $displaypage = $currpage+1;
- if ($page == $currpage && empty($nocurr)) {
- $output .= ' '. $displaypage;
- } else {
- if (!is_a($baseurl, 'moodle_url')){
- $output .= ' <a href="'. $baseurl . $pagevar .'='. $currpage .'">'. $displaypage .'</a>';
- } else {
- $output .= ' <a href="'. $baseurl->out(false, array($pagevar => $currpage)).'">'. $displaypage .'</a>';
- }
- }
- $displaycount++;
- $currpage++;
- }
- if ($currpage < $lastpage) {
- $lastpageactual = $lastpage - 1;
- if (!is_a($baseurl, 'moodle_url')){
- $output .= ' ...<a href="'. $baseurl . $pagevar .'='. $lastpageactual .'">'. $lastpage .'</a> ';
- } else {
- $output .= ' ...<a href="'. $baseurl->out(false, array($pagevar => $lastpageactual)).'">'. $lastpage .'</a> ';
- }
- }
- $pagenum = $page + 1;
- if ($pagenum != $displaypage) {
- if (!is_a($baseurl, 'moodle_url')){
- $output .= ' (<a class="next" href="'. $baseurl . $pagevar .'='. $pagenum .'">'. get_string('next') .'</a>)';
- } else {
- $output .= ' (<a class="next" href="'. $baseurl->out(false, array($pagevar => $pagenum)) .'">'. get_string('next') .'</a>)';
- }
- }
- $output .= '</div>';
- }
- if ($return) {
- return $output;
- }
- echo $output;
- return true;
- }
- /**
- * This function is used to rebuild the <nolink> tag because some formats (PLAIN and WIKI)
- * will transform it to html entities
- *
- * @param string $text Text to search for nolink tag in
- * @return string
- */
- function rebuildnolinktag($text) {
- $text = preg_replace('/<(\/*nolink)>/i','<$1>',$text);
- return $text;
- }
- /**
- * Prints a nice side block with an optional header. The content can either
- * be a block of HTML or a list of text with optional icons.
- *
- * @param string $heading Block $title embedded in HTML tags, for example <h2>.
- * @param string $content ?
- * @param array $list ?
- * @param array $icons ?
- * @param string $footer ?
- * @param array $attributes ?
- * @param string $title Plain text title, as embedded in the $heading.
- * @todo Finish documenting this function. Show example of various attributes, etc.
- */
- function print_side_block($heading='', $content='', $list=NULL, $icons=NULL, $footer='', $attributes = array(), $title='') {
- //Accessibility: skip block link, with title-text (or $block_id) to differentiate links.
- static $block_id = 0;
- $block_id++;
- $skip_text = get_string('skipa', 'access', strip_tags($title));
- $skip_link = '<a href="#sb-'.$block_id.'" class="skip-block">'.$skip_text.'</a>';
- $skip_dest = '<span id="sb-'.$block_id.'" class="skip-block-to"></span>';
- $strip_title = strip_tags($title);
- if (! empty($strip_title)) {
- echo $skip_link;
- }
- //ELSE: a single link on a page "Skip block 4" is too confusing - ignore.
- print_side_block_start($heading, $attributes);
- if ($content) {
- echo $content;
- if ($footer) {
- echo '<div class="footer">'. $footer .'</div>';
- }
- } else {
- if ($list) {
- $row = 0;
- //Accessibility: replaced unnecessary table with list, see themes/standard/styles_layout.css
- echo "\n<ul class='list'>\n";
- foreach ($list as $key => $string) {
- echo '<li class="r'. $row .'">';
- if ($icons) {
- echo '<div class="icon column c0">'. $icons[$key] .'</div>';
- }
- echo '<div class="column c1">'. $string .'</div>';
- echo "</li>\n";
- $row = $row ? 0:1;
- }
- echo "</ul>\n";
- }
- if ($footer) {
- echo '<div class="footer">'. $footer .'</div>';
- }
- }
- print_side_block_end($attributes, $title);
- echo $skip_dest;
- }
- /**
- * Starts a nice side block with an optional header.
- *
- * @param string $heading ?
- * @param array $attributes ?
- * @todo Finish documenting this function
- */
- function print_side_block_start($heading='', $attributes = array()) {
- global $CFG, $THEME;
- // If there are no special attributes, give a default CSS class
- if (empty($attributes) || !is_array($attributes)) {
- $attributes = array('class' => 'sideblock');
- } else if(!isset($attributes['class'])) {
- $attributes['class'] = 'sideblock';
- } else if(!strpos($attributes['class'], 'sideblock')) {
- $attributes['class'] .= ' sideblock';
- }
- // OK, the class is surely there and in addition to anything
- // else, it's tagged as a sideblock
- /*
- // IE misery: if I do it this way, blocks which start hidden cannot be "unhidden"
- // If there is a cookie to hide this thing, start it hidden
- if (!empty($attributes['id']) && isset($_COOKIE['hide:'.$attributes['id']])) {
- $attributes['class'] = 'hidden '.$attributes['class'];
- }
- */
- $attrtext = '';
- foreach ($attributes as $attr => $val) {
- $attrtext .= ' '.$attr.'="'.$val.'"';
- }
- echo '<div '.$attrtext.'>';
- if (!empty($THEME->customcorners)) {
- echo '<div class="wrap">'."\n";
- }
- if ($heading) {
- //Accessibility: H2 more appropriate in moodleblock.class.php: _title_html.
- echo '<div class="header">';
- if (!empty($THEME->customcorners)) {
- echo '<div class="bt"><div> </div></div>';
- echo '<div class="i1"><div class="i2">';
- echo '<div class="i3">';
- }
- echo $heading;
- if (!empty($THEME->customcorners)) {
- echo '</div></div></div>';
- }
- echo '</div>';
- } else {
- if (!empty($THEME->customcorners)) {
- echo '<div class="bt"><div> </div></div>';
- }
- }
- if (!empty($THEME->customcorners)) {
- echo '<div class="i1"><div class="i2">';
- echo '<div class="i3">';
- }
- echo '<div class="content">';
- }
- /**
- * Print table ending tags for a side block box.
- */
- function print_side_block_end($attributes = array(), $title='') {
- global $CFG, $THEME;
- echo '</div>';
- if (!empty($THEME->customcorners)) {
- echo '</div></div></div><div class="bb"><div> </div></div></div>';
- }
- echo '</div>';
- $strshow = addslashes_js(get_string('showblocka', 'access', strip_tags($title)));
- $strhide = addslashes_js(get_string('hideblocka', 'access', strip_tags($title)));
- // IE workaround: if I do it THIS way, it works! WTF?
- if (!empty($CFG->allowuserblockhiding) && isset($attributes['id'])) {
- echo '<script type="text/javascript">'."\n//<![CDATA[\n".'elementCookieHide("'.$attributes['id'].
- '","'.$strshow.'","'.$strhide."\");\n//]]>\n".'</script>';
- }
- }
- /**
- * Prints out code needed for spellchecking.
- * Original idea by Ludo (Marc Alier).
- *
- * Opening CDATA and <script> are output by weblib::use_html_editor()
- * @uses $CFG
- * @param boolean $usehtmleditor Normally set by $CFG->htmleditor, can be overriden here
- * @param boolean $return If false, echos the code instead of returning it
- * @todo Find out if lib/editor/htmlarea/htmlarea.class.php::print_speller_code() is still used, and delete if not
- */
- function print_speller_code ($usehtmleditor=false, $return=false) {
- global $CFG;
- $str = '';
- if(!$usehtmleditor) {
- $str .= 'function openSpellChecker() {'."\n";
- $str .= "\tvar speller = new spellChecker();\n";
- $str .= "\tspeller.popUpUrl = \"" . $CFG->httpswwwroot ."/lib/speller/spellchecker.html\";\n";
- $str .= "\tspeller.spellCheckScript = \"". $CFG->httpswwwroot ."/lib/speller/server-scripts/spellchecker.php\";\n";
- $str .= "\tspeller.spellCheckAll();\n";
- $str .= '}'."\n";
- } else {
- $str .= "function spellClickHandler(editor, buttonId) {\n";
- $str .= "\teditor._textArea.value = editor.getHTML();\n";
- $str .= "\tvar speller = new spellChecker( editor._textArea );\n";
- $str .= "\tspeller.popUpUrl = \"" . $CFG->httpswwwroot ."/lib/speller/spellchecker.html\";\n";
- $str .= "\tspeller.spellCheckScript = \"". $CFG->httpswwwroot ."/lib/speller/server-scripts/spellchecker.php\";\n";
- $str .= "\tspeller._moogle_edit=1;\n";
- $str .= "\tspeller._editor=editor;\n";
- $str .= "\tspeller.openChecker();\n";
- $str .= '}'."\n";
- }
- if ($return) {
- return $str;
- }
- echo $str;
- }
- /**
- * Print button for spellchecking when editor is disabled
- */
- function print_speller_button () {
- echo '<input type="button" value="Check spelling" onclick="openSpellChecker();" />'."\n";
- }
- function page_id_and_class(&$getid, &$getclass) {
- // Create class and id for this page
- global $CFG, $ME;
- static $class = NULL;
- static $id = NULL;
- if (empty($CFG->pagepath)) {
- $CFG->pagepath = $ME;
- }
- if (empty($class) || empty($id)) {
- $path = str_replace($CFG->httpswwwroot.'/', '', $CFG->pagepath); //Because the page could be HTTPSPAGEREQUIRED
- $path = str_replace('.php', '', $path);
- if (substr($path, -1) == '/') {
- $path .= 'index';
- }
- if (empty($path) || $path == 'index') {
- $id = 'site-index';
- $class = 'course';
- } else if (substr($path, 0, 5) == 'admin') {
- $id = str_replace('/', '-', $path);
- $class = 'admin';
- } else {
- $id = str_replace('/', '-', $path);
- $class = explode('-', $id);
- array_pop($class);
- $class = implode('-', $class);
- }
- }
- $getid = $id;
- $getclass = $class;
- }
- /**
- * Prints a maintenance message from /maintenance.html
- */
- function print_maintenance_message () {
- global $CFG, $SITE;
- $CFG->pagepath = "index.php";
- print_header(strip_tags($SITE->fullname), $SITE->fullname, 'home');
- print_box_start();
- print_heading(get_string('sitemaintenance', 'admin'));
- @include($CFG->dataroot.'/'.SITEID.'/maintenance.html');
- print_box_end();
- print_footer();
- }
- /**
- * Adjust the list of allowed tags based on $CFG->allowobjectembed and user roles (admin)
- */
- function adjust_allowed_tags() {
- global $CFG, $ALLOWED_TAGS;
- if (!empty($CFG->allowobjectembed)) {
- $ALLOWED_TAGS .= '<embed><object>';
- }
- }
- /// Some code to print tabs
- /// A class for tabs
- class tabobject {
- var $id;
- var $link;
- var $text;
- var $linkedwhenselected;
- /// A constructor just because I like constructors
- function tabobject ($id, $link='', $text='', $title='', $linkedwhenselected=false) {
- $this->id = $id;
- $this->link = $link;
- $this->text = $text;
- $this->title = $title ? $title : $text;
- $this->linkedwhenselected = $linkedwhenselected;
- }
- }
- /**
- * Returns a string containing a nested list, suitable for formatting into tabs with CSS.
- *
- * @param array $tabrows An array of rows where each row is an array of tab objects
- * @param string $selected The id of the selected tab (whatever row it's on)
- * @param array $inactive An array of ids of inactive tabs that are not selectable.
- * @param array $activated An array of ids of other tabs that are currently activated
- **/
- function print_tabs($tabrows, $selected=NULL, $inactive=NULL, $activated=NULL, $return=false) {
- global $CFG;
- /// $inactive must be an array
- if (!is_array($inactive)) {
- $inactive = array();
- }
- /// $activated must be an array
- if (!is_array($activated)) {
- $activated = array();
- }
- /// Convert the tab rows into a tree that's easier to process
- if (!$tree = convert_tabrows_to_tree($tabrows, $selected, $inactive, $activated)) {
- return false;
- }
- /// Print out the current tree of tabs (this function is recursive)
- $output = convert_tree_to_html($tree);
- $output = "\n\n".'<div class="tabtree">'.$output.'</div><div class="clearer"> </div>'."\n\n";
- /// We're done!
- if ($return) {
- return $output;
- }
- echo $output;
- }
- function convert_tree_to_html($tree, $row=0) {
- $str = "\n".'<ul class="tabrow'.$row.'">'."\n";
- $first = true;
- $count = count($tree);
- foreach ($tree as $tab) {
- $count--; // countdown to zero
- $liclass = '';
- if ($first && ($count == 0)) { // Just one in the row
- $liclass = 'first last';
- $first = false;
- } else if ($first) {
- $liclass = 'first';
- $first = false;
- } else if ($count == 0) {
- $liclass = 'last';
- }
- if ((empty($tab->subtree)) && (!empty($tab->selected))) {
- $liclass .= (empty($liclass)) ? 'onerow' : ' onerow';
- }
- if ($tab->inactive || $tab->active || $tab->selected) {
- if ($tab->selected) {
- $liclass .= (empty($liclass)) ? 'here selected' : ' here selected';
- } else if ($tab->active) {
- $liclass .= (empty($liclass)) ? 'here active' : ' here active';
- }
- }
- $str .= (!empty($liclass)) ? '<li class="'.$liclass.'">' : '<li>';
- if ($tab->inactive || $tab->active || ($tab->selected && !$tab->linkedwhenselected)) {
- // The a tag is used for styling
- $str .= '<a class="nolink"><span>'.$tab->text.'</span></a>';
- } else {
- $str .= '<a href="'.$tab->link.'" title="'.$tab->title.'"><span>'.$tab->text.'</span></a>';
- }
- if (!empty($tab->subtree)) {
- $str .= convert_tree_to_html($tab->subtree, $row+1);
- } else if ($tab->selected) {
- $str .= '<div class="tabrow'.($row+1).' empty"> </div>'."\n";
- }
- $str .= ' </li>'."\n";
- }
- $str .= '</ul>'."\n";
- return $str;
- }
- function convert_tabrows_to_tree($tabrows, $selected, $inactive, $activated) {
- /// Work backwards through the rows (bottom to top) collecting the tree as we go.
- $tabrows = array_reverse($tabrows);
- $subtree = array();
- foreach ($tabrows as $row) {
- $tree = array();
- foreach ($row as $tab) {
- $tab->inactive = in_array((string)$tab->id, $inactive);
- $tab->active = in_array((string)$tab->id, $activated);
- $tab->selected = (string)$tab->id == $selected;
- if ($tab->active || $tab->selected) {
- if ($subtree) {
- $tab->subtree = $subtree;
- }
- }
- $tree[] = $tab;
- }
- $subtree = $tree;
- }
- return $subtree;
- }
- /**
- * Returns a string containing a link to the user documentation for the current
- * page. Also contains an icon by default. Shown to teachers and admin only.
- *
- * @param string $text The text to be displayed for the link
- * @param string $iconpath The path to the icon to be displayed
- */
- function page_doc_link($text='', $iconpath='') {
- global $ME, $COURSE, $CFG;
- if (empty($CFG->docroot) or empty($CFG->rolesactive)) {
- return '';
- }
- if (empty($COURSE->id)) {
- $context = get_context_instance(CONTEXT_SYSTEM);
- } else {
- $context = get_context_instance(CONTEXT_COURSE, $COURSE->id);
- }
- if (!has_capability('moodle/site:doclinks', $context)) {
- return '';
- }
- if (empty($CFG->pagepath)) {
- $CFG->pagepath = $ME;
- }
- $path = str_replace($CFG->httpswwwroot.'/','', $CFG->pagepath); // Because the page could be HTTPSPAGEREQUIRED
- $path = str_replace('.php', '', $path);
- if (empty($path)) { // Not for home page
- return '';
- }
- return doc_link($path, $text, $iconpath);
- }
- /**
- * Returns a string containing a link to the user documentation.
- * Also contains an icon by default. Shown to teachers and admin only.
- *
- * @param string $path The page link after doc root and language, no
- * leading slash.
- * @param string $text The text to be displayed for the link
- * @param string $iconpath The path to the icon to be displayed
- */
- function doc_link($path='', $text='', $iconpath='') {
- global $CFG;
- if (empty($CFG->docroot)) {
- return '';
- }
- $target = '';
- if (!empty($CFG->doctonewwindow)) {
- $target = ' target="_blank"';
- }
- $lang = str_replace('_utf8', '', current_language());
- $str = '<a href="' .$CFG->docroot. '/' .$lang. '/' .$path. '"' .$target. '>';
- if (empty($iconpath)) {
- $iconpath = $CFG->httpswwwroot . '/pix/docs.gif';
- }
- // alt left blank intentionally to prevent repetition in screenreaders
- $str .= '<img class="iconhelp" src="' .$iconpath. '" alt="" />' .$text. '</a>';
- return $str;
- }
- /**
- * Returns true if the current site debugging settings are equal or above specified level.
- * If passed a parameter it will emit a debugging notice similar to trigger_error(). The
- * routing of notices is controlled by $CFG->debugdisplay
- * eg use like this:
- *
- * 1) debugging('a normal debug notice');
- * 2) debugging('something really picky', DEBUG_ALL);
- * 3) debugging('annoying debug message only for develpers', DEBUG_DEVELOPER);
- * 4) if (debugging()) { perform extra debugging operations (do not use print or echo) }
- *
- * In code blocks controlled by debugging() (such as example 4)
- * any output should be routed via debugging() itself, or the lower-level
- * trigger_error() or error_log(). Using echo or print will break XHTML
- * JS and HTTP headers.
- *
- *
- * @param string $message a message to print
- * @param int $level the level at which this debugging statement should show
- * @return bool
- */
- function debugging($message='', $level=DEBUG_NORMAL) {
- global $CFG;
- if (empty($CFG->debug)) {
- return false;
- }
- if ($CFG->debug >= $level) {
- if ($message) {
- $callers = debug_backtrace();
- $from = '<ul style="text-align: left">';
- foreach ($callers as $caller) {
- if (!isset($caller['line'])) {
- $caller['line'] = '?'; // probably call_user_func()
- }
- if (!isset($caller['file'])) {
- $caller['file'] = $CFG->dirroot.'/unknownfile'; // probably call_user_func()
- }
- $from .= '<li>line ' . $caller['line'] . ' of ' . substr($caller['file'], strlen($CFG->dirroot) + 1);
- if (isset($caller['function'])) {
- $from .= ': call to ';
- if (isset($caller['class'])) {
- $from .= $caller['class'] . $caller['type'];
- }
- $from .= $caller['function'] . '()';
- }
- $from .= '</li>';
- }
- $from .= '</ul>';
- if (!isset($CFG->debugdisplay)) {
- $CFG->debugdisplay = ini_get_bool('display_errors');
- }
- if ($CFG->debugdisplay) {
- if (!defined('DEBUGGING_PRINTED')) {
- define('DEBUGGING_PRINTED', 1); // indicates we have printed something
- }
- notify($message . $from, 'notifytiny');
- } else {
- trigger_error($message . $from, E_USER_NOTICE);
- }
- }
- return true;
- }
- return false;
- }
- /**
- * Disable debug messages from debugging(), while keeping PHP error reporting level as is.
- */
- function disable_debugging() {
- global $CFG;
- $CFG->debug = $CFG->debug | 0x80000000; // switch the sign bit in integer number ;-)
- }
- /**
- * Returns string to add a frame attribute, if required
- */
- function frametarget() {
- global $CFG;
- if (empty($CFG->framename) or ($CFG->framename == '_top')) {
- return '';
- } else {
- return ' target="'.$CFG->framename.'" ';
- }
- }
- /**
- * Outputs a HTML comment to the browser. This is used for those hard-to-debug
- * pages that use bits from many different files in very confusing ways (e.g. blocks).
- * @usage print_location_comment(__FILE__, __LINE__);
- * @param string $file
- * @param integer $line
- * @param boolean $return Whether to return or print the comment
- * @return mixed Void unless true given as third parameter
- */
- function print_location_comment($file, $line, $return = false)
- {
- if ($return) {
- return "<!-- $file at line $line -->\n";
- } else {
- echo "<!-- $file at line $line -->\n";
- }
- }
- /**
- * Returns an image of an up or down arrow, used for column sorting. To avoid unnecessary DB accesses, please
- * provide this function with the language strings for sortasc and sortdesc.
- * If no sort string is associated with the direction, an arrow with no alt text will be printed/returned.
- * @param string $direction 'up' or 'down'
- * @param string $strsort The language string used for the alt attribute of this image
- * @param bool $return Whether to print directly or return the html string
- * @return string HTML for the image
- *
- * TODO See if this isn't already defined somewhere. If not, move this to weblib
- */
- function print_arrow($direction='up', $strsort=null, $return=false) {
- global $CFG;
- if (!in_array($direction, array('up', 'down', 'right', 'left', 'move'))) {
- return null;
- }
- $return = null;
- switch ($direction) {
- case 'up':
- $sortdir = 'asc';
- break;
- case 'down':
- $sortdir = 'desc';
- break;
- case 'move':
- $sortdir = 'asc';
- break;
- default:
- $sortdir = null;
- break;
- }
- // Prepare language string
- $strsort = '';
- if (empty($strsort) && !empty($sortdir)) {
- $strsort = get_string('sort' . $sortdir, 'grades');
- }
- $return = ' <img src="'.$CFG->pixpath.'/t/' . $direction . '.gif" alt="'.$strsort.'" /> ';
- if ($return) {
- return $return;
- } else {
- echo $return;
- }
- }
- /**
- * Returns boolean true if the current language is right-to-left (Hebrew, Arabic etc)
- *
- */
- function right_to_left() {
- static $result;
- if (isset($result)) {
- return $result;
- }
- return $result = (get_string('thisdirection') == 'rtl');
- }
- /**
- * Returns swapped left<=>right if in RTL environment.
- * part of RTL support
- *
- * @param string $align align to check
- * @return string
- */
- function fix_align_rtl($align) {
- if (!right_to_left()) {
- return $align;
- }
- if ($align=='left') { return 'right'; }
- if ($align=='right') { return 'left'; }
- return $align;
- }
- /**
- * Returns true if the page is displayed in a popup window.
- * Gets the information from the URL parameter inpopup.
- *
- * @return boolean
- *
- * TODO Use a central function to create the popup calls allover Moodle and
- * TODO In the moment only works with resources and probably questions.
- */
- function is_in_popup() {
- $inpopup = optional_param('inpopup', '', PARAM_BOOL);
- return ($inpopup);
- }
- /**
- * Return the authentication plugin title
- * @param string $authtype plugin type
- * @return string
- */
- function auth_get_plugin_title ($authtype) {
- $authtitle = get_string("auth_{$authtype}title", "auth");
- if ($authtitle == "[[auth_{$authtype}title]]") {
- $authtitle = get_string("auth_{$authtype}title", "auth_{$authtype}");
- }
- return $authtitle;
- }
- // vim:autoindent:expandtab:shiftwidth=4:tabstop=4:tw=140:
- ?>