/libs/Sajax.php
PHP | 384 lines | 309 code | 43 blank | 32 comment | 75 complexity | 3482ccbc63bed623023cbb22b85d4dd4 MD5 | raw file
Possible License(s): BSD-3-Clause
- <?php
- if (!isset($SAJAX_INCLUDED)) {
- /*
- * GLOBALS AND DEFAULTS
- *
- */
- $GLOBALS['sajax_version'] = '0.12';
- $GLOBALS['sajax_debug_mode'] = false;
- $GLOBALS['sajax_export_list'] = array();
- $GLOBALS['sajax_request_type'] = 'GET';
- $GLOBALS['sajax_remote_uri'] = Config::$path;
- $GLOBALS['sajax_failure_redirect'] = '';
-
- /*
- * CODE
- *
- */
-
- //
- // Initialize the Sajax library.
- //
- function sajax_init() {
- }
-
- //
- // Helper function to return the script's own URI.
- //
- function sajax_get_my_uri() {
- return $_SERVER["REQUEST_URI"];
- }
- $sajax_remote_uri = sajax_get_my_uri();
-
- //
- // Helper function to return an eval()-usable representation
- // of an object in JavaScript.
- //
- function sajax_get_js_repr($value) {
- $type = gettype($value);
-
- if ($type == "boolean") {
- return ($value) ? "Boolean(true)" : "Boolean(false)";
- }
- elseif ($type == "integer") {
- return "parseInt($value)";
- }
- elseif ($type == "double") {
- return "parseFloat($value)";
- }
- elseif ($type == "array" || $type == "object" ) {
- //
- // XXX Arrays with non-numeric indices are not
- // permitted according to ECMAScript, yet everyone
- // uses them.. We'll use an object.
- //
- $s = "{ ";
- if ($type == "object") {
- $value = get_object_vars($value);
- }
- foreach ($value as $k=>$v) {
- $esc_key = sajax_esc($k);
- if (is_numeric($k))
- $s .= "$k: " . sajax_get_js_repr($v) . ", ";
- else
- $s .= "\"$esc_key\": " . sajax_get_js_repr($v) . ", ";
- }
- if (count($value))
- $s = substr($s, 0, -2);
- return $s . " }";
- }
- else {
- $esc_val = sajax_esc($value);
- $s = "'$esc_val'";
- return $s;
- }
- }
- function sajax_handle_client_request() {
- global $sajax_export_list, $inflector;
-
- $mode = "";
-
- if (! empty($_GET["rs"]))
- $mode = "get";
-
- if (!empty($_POST["rs"]))
- $mode = "post";
-
- if (empty($mode))
- return;
- $target = "";
-
- if ($mode == "get") {
- // Bust cache in the head
- header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past
- header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
- // always modified
- header ("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
- header ("Pragma: no-cache"); // HTTP/1.0
- $func_name = $_GET["rs"];
- if (! empty($_GET["rsargs"]))
- $args = $_GET["rsargs"];
- else
- $args = array();
- }
- else {
- $func_name = $_POST["rs"];
- if (! empty($_POST["rsargs"]))
- $args = $_POST["rsargs"];
- else
- $args = array();
- }
-
- list($cn, $mn) = explode('$', $func_name);
- if(!empty($mn))
- {
- // A method, not a function...currently only works in a controller
- include('controllers/' . $inflector->inflectee($cn)->toFile()->value() . '.php');
- }
- // CHECK!
- if(empty($sajax_export_list[$func_name]))
- echo "-:$func_name not callable";
- else {
- echo "+:";
- list($cn, $mn) = $sajax_export_list[$func_name];
- if(empty($cn))
- $result = call_user_func_array($func_name, $args);
- else
- $result = call_user_func_array(array($cn, $mn), $args);
- echo "var res = " . trim(sajax_get_js_repr($result)) . "; res;";
- }
- exit;
- }
-
- function sajax_get_common_js() {
- global $sajax_debug_mode;
- global $sajax_request_type;
- global $sajax_remote_uri;
- global $sajax_failure_redirect;
-
- $t = strtoupper($sajax_request_type);
- if ($t != "" && $t != "GET" && $t != "POST")
- return "// Invalid type: $t.. \n\n";
-
- ob_start();
- ?>
-
- // remote scripting library
- // (c) copyright 2005 modernmethod, inc
- var sajax_debug_mode = <?php echo $sajax_debug_mode ? "true" : "false"; ?>;
- var sajax_request_type = "<?php echo $t; ?>";
- var sajax_target_id = "";
- var sajax_failure_redirect = "<?php echo $sajax_failure_redirect; ?>";
-
- function sajax_debug(text) {
- if (sajax_debug_mode)
- alert(text);
- }
-
- function sajax_init_object() {
- sajax_debug("sajax_init_object() called..")
-
- var A;
-
- var msxmlhttp = new Array(
- 'Msxml2.XMLHTTP.5.0',
- 'Msxml2.XMLHTTP.4.0',
- 'Msxml2.XMLHTTP.3.0',
- 'Msxml2.XMLHTTP',
- 'Microsoft.XMLHTTP');
- for (var i = 0; i < msxmlhttp.length; i++) {
- try {
- A = new ActiveXObject(msxmlhttp[i]);
- } catch (e) {
- A = null;
- }
- }
-
- if(!A && typeof XMLHttpRequest != "undefined")
- A = new XMLHttpRequest();
- if (!A)
- sajax_debug("Could not create connection object.");
- return A;
- }
-
- var sajax_requests = new Array();
-
- function sajax_cancel() {
- for (var i = 0; i < sajax_requests.length; i++)
- sajax_requests[i].abort();
- }
-
- function sajax_do_call(func_name, args) {
- var i, x, n;
- var uri;
- var post_data;
- var target_id;
-
- sajax_debug("in sajax_do_call().." + sajax_request_type + "/" + sajax_target_id);
- target_id = sajax_target_id;
- if (typeof(sajax_request_type) == "undefined" || sajax_request_type == "")
- sajax_request_type = "GET";
-
- uri = "<?php echo $sajax_remote_uri; ?>";
- if (sajax_request_type == "GET") {
-
- if (uri.indexOf("?") == -1)
- uri += "?rs=" + escape(func_name);
- else
- uri += "&rs=" + escape(func_name);
- uri += "&rst=" + escape(sajax_target_id);
- uri += "&rsrnd=" + new Date().getTime();
-
- for (i = 0; i < args.length-1; i++)
- uri += "&rsargs[]=" + escape(args[i]);
- post_data = null;
- }
- else if (sajax_request_type == "POST") {
- post_data = "rs=" + escape(func_name);
- post_data += "&rst=" + escape(sajax_target_id);
- post_data += "&rsrnd=" + new Date().getTime();
-
- for (i = 0; i < args.length-1; i++)
- post_data = post_data + "&rsargs[]=" + escape(args[i]);
- }
- else {
- alert("Illegal request type: " + sajax_request_type);
- }
-
- x = sajax_init_object();
- if (x == null) {
- if (sajax_failure_redirect != "") {
- location.href = sajax_failure_redirect;
- return false;
- } else {
- sajax_debug("NULL sajax object for user agent:\n" + navigator.userAgent);
- return false;
- }
- } else {
- x.open(sajax_request_type, uri, true);
- // window.open(uri);
-
- sajax_requests[sajax_requests.length] = x;
-
- if (sajax_request_type == "POST") {
- x.setRequestHeader("Method", "POST " + uri + " HTTP/1.1");
- x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
- }
-
- x.onreadystatechange = function() {
- if (x.readyState != 4)
- return;
- sajax_debug("received " + x.responseText);
-
- var status;
- var data;
- var txt = x.responseText.replace(/^\s*|\s*$/g,"");
- status = txt.charAt(0);
- data = txt.substring(2);
- if (status == "") {
- // let's just assume this is a pre-response bailout and let it slide for now
- } else if (status == "-")
- alert("Error: " + data);
- else {
- if (target_id != "")
- document.getElementById(target_id).innerHTML = eval(data);
- else {
- try {
- var callback;
- var extra_data = false;
- if (typeof args[args.length-1] == "object") {
- callback = args[args.length-1].callback;
- extra_data = args[args.length-1].extra_data;
- } else {
- callback = args[args.length-1];
- }
- callback(eval(data), extra_data);
- } catch (e) {
- sajax_debug("Caught error " + e + ": Could not eval " + data );
- }
- }
- }
- }
- }
-
- sajax_debug(func_name + " uri = " + uri + "/post = " + post_data);
- x.send(post_data);
- sajax_debug(func_name + " waiting..");
- delete x;
- return true;
- }
-
- <?php
- $html = ob_get_contents();
- ob_end_clean();
- return $html;
- }
-
- function sajax_show_common_js() {
- echo sajax_get_common_js();
- }
-
- // javascript escape a value
- function sajax_esc($val)
- {
- $val = str_replace("\\", "\\\\", $val);
- $val = str_replace("\r", "\\r", $val);
- $val = str_replace("\n", "\\n", $val);
- $val = str_replace("'", "\\'", $val);
- return str_replace('"', '\\"', $val);
- }
- function sajax_get_one_stub($func_desc) {
- // wrapper for [?php echo $func_name; ?]
- if(empty($func_desc[0]))
- $func_name = $func_desc[1];
- else
- $func_name = $func_desc[0] . '$' . $func_desc[1];
- ob_start();
- ?>
-
-
- function <?php echo $func_name; ?>() {
- sajax_do_call("<?php echo $func_name; ?>",
- <?php echo $func_name; ?>.arguments);
- }
-
- <?php
- $html = ob_get_contents();
- ob_end_clean();
- return $html;
- }
-
- function sajax_show_one_stub($func_name) {
- echo sajax_get_one_stub($func_name);
- }
-
- function sajax_export() {
- global $sajax_export_list;
-
- $n = func_num_args();
- for ($i = 0; $i < $n; $i++) {
- $nn = func_get_arg($i);
- list($cn, $mn) = explode('$', $nn);
- if(empty($mn))
- {
- $mn = $cn;
- $cn = null;
- }
- $sajax_export_list[$nn] = array($cn, $mn);
- }
- }
-
- $sajax_js_has_been_shown = 0;
- function sajax_get_javascript()
- {
- global $sajax_js_has_been_shown;
- global $sajax_export_list;
-
- $html = "";
- if (! $sajax_js_has_been_shown) {
- $html .= sajax_get_common_js();
- $sajax_js_has_been_shown = 1;
- }
- foreach ($sajax_export_list as $func) {
- $html .= sajax_get_one_stub($func);
- }
- return $html;
- }
-
- function sajax_show_javascript()
- {
- echo sajax_get_javascript();
- }
-
- $SAJAX_INCLUDED = 1;
- }
- ?>