/wp-content/plugins/ajax-event-calendar/ajax-event-calendar.php

<?php

/*

Plugin Name: Ajax Event Calendar

Plugin URI: http://wordpress.org/extend/plugins/ajax-event-calendar/

Description: A fully localized community calendar that allows authorized users to manage events in custom categories.

Version: 1.0.4

Author: Eran Miller

Author URI: http://eranmiller.com

License: GPL2

*/



/*  Copyright 2011  Eran Miller <email: plugins@eranmiller.com>



    This program is free software; you can redistribute it and/or modify

    it under the terms of the GNU General Public License, version 2, as

    published by the Free Software Foundation.



    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.



    You should have received a copy of the GNU General Public License

    along with this program; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

*/



// disallow direct access to file

if (basename($_SERVER['PHP_SELF']) == basename(__FILE__)) {

	die('Sorry, but you cannot access this page directly.');

}



if (version_compare(PHP_VERSION, '5', '<')) {

	$out = "<div id='message' style='width:94%' class='message error'>";

	$out .= sprintf("<p><strong>Your PHP version is '%s'.<br>The Ajax Event Calendar WordPress plugin requires PHP 5 or higher.</strong></p><p>Ask your web host how to enable PHP 5 on your site.</p>", PHP_VERSION);

	$out .= "</div>";

	print $out;

}



define('AEC_MENU_POSITION', null);  //previously 30

define('AEC_VERSION', '1.0.4');

define('AEC_FILE', basename(__FILE__));

define('AEC_NAME', str_replace('.php', '', AEC_FILE));

define('AEC_PATH', plugin_dir_path(__FILE__));

define('AEC_URL', plugin_dir_url(__FILE__));

define('AEC_EVENT_TABLE', 'aec_event');

define('AEC_CATEGORY_TABLE', 'aec_event_category');

define('AEC_HOMEPAGE', 'http://wordpress.org/extend/plugins/' . AEC_NAME . '/');

define('AEC_WP_DATE_FORMAT', get_option('date_format'));

define('AEC_WP_TIME_FORMAT', get_option('time_format'));

define('AEC_DB_DATETIME_FORMAT', 'Y-m-d H:i:s');

define('AEC_LOCALE', substr(get_locale(), 0, 2));	// for javascript localization scripts



// if uncommented, overrides the location of the WP error log to the AEC plugin root

// @ini_set('error_log', AEC_PATH . 'aec_debug.log');



if (!class_exists('ajax_event_calendar')) {

	class ajax_event_calendar {



		private $required_fields  = array();

		private $shortcode_params = array();

		private $admin_messages	  = array();

		private $plugin_defaults  = array(

									'filter_label'		=> 'Show Type',

									'limit' 			=> '0',

									'show_weekends'		=> '1',

									'show_map_link'		=> '1',

									'menu' 				=> '1',

									'make_links'		=> '0',

									'popup_links'		=> '1',

									'step_interval'		=> '30',

									'addy_format'		=> '0',

									'scroll'			=> '1',

									'title' 			=> '2',

									'venue' 			=> '1',

									'address'			=> '2',

									'city' 				=> '2',

									'state' 			=> '2',

									'zip'				=> '2',

									'country'			=> '1',

									'link' 				=> '1',

									'description' 		=> '2',

									'contact' 			=> '2',

									'contact_info' 		=> '2',

									'accessible' 		=> '0',

									'rsvp' 				=> '0',

									'reset' 			=> '0'

								);



		function __construct() {

			add_action('plugins_loaded', array($this, 'version_patches'));

		    add_action('init', array($this, 'localize_plugin'));

			add_action('admin_menu', array($this, 'render_admin_menu'));

			add_action('admin_init', array($this, 'admin_options_initialize'));

			add_action('wp_print_styles', array($this, 'calendar_styles'));

			add_action('wp_print_scripts', array($this, 'frontend_calendar_scripts'));

			add_action('delete_user', array($this, 'delete_events_by_user'));

			add_action('admin_notices', array(&$this, 'admin_alert'));

			

			// ajax hooks

			add_action('wp_ajax_nopriv_get_events', array($this, 'render_calendar_events'));

			add_action('wp_ajax_get_events', array($this, 'render_calendar_events'));

			add_action('wp_ajax_nopriv_get_event', array($this, 'render_frontend_modal'));

			add_action('wp_ajax_get_event', array($this, 'render_frontend_modal'));

			add_action('wp_ajax_admin_event', array($this, 'render_admin_modal'));

			add_action('wp_ajax_add_event', array($this, 'add_event'));

			add_action('wp_ajax_copy_event', array($this, 'copy_event'));

			add_action('wp_ajax_update_event', array($this, 'update_event'));

			add_action('wp_ajax_delete_event', array($this, 'delete_event'));

			add_action('wp_ajax_move_event', array($this, 'move_event'));

			add_action('wp_ajax_add_category', array($this, 'add_category'));

			add_action('wp_ajax_update_filter_label', array($this, 'update_filter_label'));

			add_action('wp_ajax_update_category', array($this, 'update_category'));

			add_action('wp_ajax_delete_category', array($this, 'confirm_delete_category'));

			add_action('wp_ajax_reassign_category', array($this, 'reassign_category'));



			// wordpress overrides

			add_filter('manage_users_columns', array($this, 'add_events_column'));

			add_filter('manage_users_custom_column', array($this, 'add_events_column_data'), 10, 3);

			add_filter('plugin_action_links', array($this, 'settings_link'), 10, 2);

			add_filter('option_page_capability_aec_plugin_options', array($this, 'set_option_page_capability'));



			add_shortcode('calendar', array($this, 'render_shortcode_calendar'));

			add_shortcode('eventlist', array($this, 'render_shortcode_eventlist'));



			// activate shortcode in text widgets

			add_filter('widget_text', 'shortcode_unautop');

			add_filter('widget_text', 'do_shortcode');

		}



		function install() {

			require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

			global $wpdb;

			if ($wpdb->get_var('SHOW TABLES LIKE "' . $wpdb->prefix . AEC_EVENT_TABLE . '"') != $wpdb->prefix . AEC_EVENT_TABLE) {

				$sql = 'CREATE TABLE ' . $wpdb->prefix . AEC_EVENT_TABLE . ' (

						id BIGINT(20) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,

						user_id INT(10) UNSIGNED NOT NULL,

						title VARCHAR(100) NOT NULL,

						start DATETIME NOT NULL,

						end DATETIME NOT NULL,

						repeat_freq TINYINT(4) UNSIGNED DEFAULT 0,

						repeat_int TINYINT(4) UNSIGNED DEFAULT 0,

						repeat_end DATE,

						allDay TINYINT(1) UNSIGNED DEFAULT 0,

						category_id TINYINT(4) UNSIGNED NOT NULL,

						description VARCHAR(2500),

						link VARCHAR(2000),

						venue VARCHAR(100),

						address VARCHAR(100),

						city VARCHAR(50),

						state VARCHAR(50),

						zip VARCHAR(10),

						country VARCHAR(50),

						contact VARCHAR(50),

						contact_info VARCHAR(50),

						access TINYINT(1) UNSIGNED DEFAULT 0,

						rsvp TINYINT(1) UNSIGNED DEFAULT 0)

						CHARSET=utf8;';

				dbDelta($sql);

			}



			if ($wpdb->get_var('SHOW TABLES LIKE "' . $wpdb->prefix . AEC_CATEGORY_TABLE . '"') != $wpdb->prefix . AEC_CATEGORY_TABLE) {

				$sql = 'CREATE TABLE ' . $wpdb->prefix . AEC_CATEGORY_TABLE . ' (

							id TINYINT(4) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,

							category VARCHAR(25) NOT NULL,

							bgcolor CHAR(6) NOT NULL,

							fgcolor CHAR(6) NOT NULL

						) CHARSET=utf8;

						## DEFAULT CATEGORIES

						INSERT INTO ' . $wpdb->prefix . AEC_CATEGORY_TABLE . ' (id, category, bgcolor, fgcolor)

						VALUES 	(NULL, "Event", "517ed6", "FFFFFF"),

								(NULL, "Deadline", "e3686c", "FFFFFF"),

								(NULL, "Volunteer", "8fc9b0", "FFFFFF");';

				dbDelta($sql);

			}



			// add new role

			add_role('calendar_contributor', 'Calendar Contributor', array(

				'read' 				=> 1,

				'aec_add_events' 	=> 1

			));



			// add calendar capabilities to administrator

			$role = get_role('administrator');

			$role->add_cap('aec_add_events');

			$role->add_cap('aec_manage_events');

			$role->add_cap('aec_manage_calendar');

		}



		function version_patches() {

			$plugin_updated = false;

			$options 		= get_option('aec_options');

			$current 		= get_option('aec_version');



			// initial and manual option initialization

			if (!is_array($options) || !isset($options['reset']) || $options['reset'] == '1') {

				update_option('aec_options', $this->plugin_defaults);

			}



			if (version_compare($current, AEC_VERSION, '==')) {

				return;

			}



			// set version for new plugin installations

			if ($current === false) {

				update_option('aec_version', AEC_VERSION);

				$current = get_option('aec_version');

				$plugin_updated = true;

			}



		// < 0.9.6

			if (version_compare($current, '0.9.6', '<')) {

				// set title as a required field

				$options 		= $this->insert_option('title', 2);



				// update database fields in event table

				require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

				global $wpdb;

				$sql = 'ALTER TABLE ' . $wpdb->prefix . AEC_EVENT_TABLE . ' '

					. 'modify venue VARCHAR(100),'

					. 'modify city VARCHAR(50),'

					. 'modify state CHAR(2),'

					. 'modify zip VARCHAR(10),'

					. 'modify contact VARCHAR(50),'

					. 'modify contact_info VARCHAR(50);';

				$wpdb->query($sql);

				$plugin_updated = true;

			}



		// < 0.9.8.1

			if (version_compare($current, '0.9.8.1', '<')) {

				// add calendar weekend toggle, and event detail map link toggle

				$options 		= $this->insert_option('show_weekends', 1);

				$options 		= $this->insert_option('show_map_link', 1);

				$plugin_updated = true;

			}



		// < 0.9.8.5

			if (version_compare($current, '0.9.8.5', '<')) {



				// update tables to UTF8 and modify category table

				require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

				global $wpdb;

				$sqla = 'ALTER TABLE ' . $wpdb->prefix . AEC_EVENT_TABLE . ' CONVERT TO CHARACTER SET utf8;';

				$wpdb->query($sqla);

				$sqlb = 'ALTER TABLE ' . $wpdb->prefix . AEC_CATEGORY_TABLE . ' CONVERT TO CHARACTER SET utf8;';

				$wpdb->query($sqlb);

				$sqlc = 'ALTER TABLE ' . $wpdb->prefix . AEC_CATEGORY_TABLE . ' '

						. 'modify category VARCHAR(100) NOT NULL;';

				$wpdb->query($sqlc);



				// remove sidebar option

				$this->decommission_options(array('sidebar'));



				// remove retired administrator capability

				$role = get_role('administrator');

				$role->remove_cap('aec_run_reports');



				// remove retired role

				remove_role('blog_calendar_contributor');



				// remove outdated widget option

				delete_option('widget_upcoming_events');

				delete_option('widget_contributor_list');

				$plugin_updated = true;

			}



		// < 0.9.9.1

			if (version_compare($current, '0.9.9.1', '<')) {

				// update table to support Aussi state length

				require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

				global $wpdb;

				$sql = 'ALTER TABLE ' . $wpdb->prefix . AEC_EVENT_TABLE

					 . ' MODIFY state CHAR(3);';

				$wpdb->query($sql);



				// add filter label, description link options and address format options

				$options 		= $this->insert_option('filter_label', 'Show Type');

				$options		= $this->insert_option('make_links', 0);

				$options		= $this->insert_option('popup_links', 1);

				$options		= $this->insert_option('addy_format', 0);

				$plugin_updated = true;

			}



		// < 1.0

			if (version_compare($current, '1.0', '<')) {

				// update table with repeating event fields, country, larger description, and larger state/province

				require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

				global $wpdb;

				$sql = 'ALTER TABLE ' . $wpdb->prefix . AEC_EVENT_TABLE

					. ' MODIFY description VARCHAR(2500),'

					. ' MODIFY state VARCHAR(50),'

					. ' ADD country VARCHAR(50),'

					. ' ADD repeat_freq TINYINT(4) UNSIGNED DEFAULT 0,'

					. ' ADD repeat_int TINYINT(4) UNSIGNED DEFAULT 0,'

					. ' ADD repeat_end DATE;';

				$wpdb->query($sql);



				// add mousescroll control, country field, and step d options

				$options		= $this->insert_option('scroll', 1);

				$options		= $this->insert_option('country', 0);

				$options		= $this->insert_option('step_interval', 30);

				$plugin_updated = true;

			}

			

		// < 1.0.1

		if (version_compare($current, '1.0.1', '<')) {

			// update to accomodate long urls

			require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

			global $wpdb;

			$sql = 'ALTER TABLE ' . $wpdb->prefix . AEC_EVENT_TABLE

				. ' MODIFY link VARCHAR(2000);';

			$wpdb->query($sql);

			$plugin_updated = true;

		}



			// update routines completed

			if ($plugin_updated) {



				// update plugin version

				update_option('aec_version', AEC_VERSION);



				// add sample event

				$_POST['event']['user_id'] = 0;	// system id

				$_POST['event']['title'] = "Ajax Event Calendar [v" . AEC_VERSION . "] successfully installed!";

				$_POST['event']['start_date'] = date('Y-m-d');

				$_POST['event']['start_time'] = '00:00:00';

				$_POST['event']['end_date'] = date('Y-m-d');

				$_POST['event']['end_time'] = '00:00:00';

				$_POST['event']['allDay'] = 1;

				$_POST['event']['repeat_freq'] = 0;

				$_POST['event']['repeat_int'] = 0;

				$_POST['event']['repeat_end'] = null;

				$_POST['event']['category_id'] = 1;

				$_POST['event']['description'] = "Ajax Event Calendar WordPress Plugin is a fully localized (including RTL language support) community calendar that allows authorized users to add, edit, copy, move, resize and delete events into custom categories.  Highly customized calendars can be added to pages, posts or text widgets using the <strong>[calendar]</strong> shortcode.  Similarly, a list view of events can be added using the <strong>[eventlist]</strong> shortcode.  Click on the event link to learn about available the shortcode options.";

				$_POST['event']['link'] = AEC_HOMEPAGE;

				$_POST['event']['venue'] = 'Cloud Gate "The Bean"';

				$_POST['event']['address'] = '201 East Randolph Street';

				$_POST['event']['city'] = 'Chicago';

				$_POST['event']['state'] = 'Illinois';

				$_POST['event']['zip'] = '60601-6530';

				$_POST['event']['country'] = 'United States';

				$_POST['event']['contact'] = 'Eran Miller';

				$_POST['event']['contact_info'] = '123-123-1234';

				$_POST['event']['access'] = 1;

				$_POST['event']['rsvp'] = 0;



				// removes previously created release events and creates a new one

				$_POST['user_id'] = $_POST['event']['user_id'];

				$this->delete_events_by_user();

				$this->db_insert_event($this->cleanse_event_input($_POST['event']), false);

			}

		}



		function set_admin_alert($message) {

			array_push($this->admin_messages, print_r($message, true));

		}

		

		// display admin alerts

		function admin_alert() {

			$alerts = $this->admin_messages;

			if (count($alerts)) {

				foreach ($alerts as $alert) {

					printf('<div class="updated">%s</div>', $alert);

				}

			}

		}

		

	    function localize_plugin($page) {

			load_plugin_textdomain(AEC_NAME, false, AEC_NAME . '/locale/');

			$timezone = get_option('timezone_string');

			if ($timezone) {

				date_default_timezone_set($timezone);

			} else {

				// TODO: look into converting gmt_offset into timezone_string

				date_default_timezone_set('UTC');

			}

			

			// localization: date/time

			if (get_option('timezone_string')) {

				$this->timezone = get_option('timezone_string');

			} else {

				$this->set_admin_alert(sprintf('<p>Ajax Event Calendar %s.<br>%s... <a href="http://www.travelmath.com/time-zone/" target="_blank"><strong>%s</strong></a>.</p>

					<h3><a href="' . admin_url() . 'options-general.php">%s</a></h3>'

				, __('requires a city value for the Timezone setting', AEC_NAME)

				, __("Not all cities are listed. Can't find your city in the timezone dropdown?", AEC_NAME)

				, __('Search for your standardized timezone.', AEC_NAME)

				, __('Update Blog Settings', AEC_NAME)));

			}

			

			// get_magic_quotes_gpc issue

			if (get_magic_quotes_gpc()) {

				$this->set_admin_alert(sprintf('<p>%s %s <br>%s <a href="http://wordpress.org/support/topic/plugin-ajax-event-calendar-ajax-event-calendar-dont-like-the-apostrophes?replies=11#post-2259386" target="_blank"> <strong>%s</strong></a>. %s</p>'

				, __('Your server has PHP magic_quotes_gpc set to active.', AEC_NAME)

				, __('This produces formatting errors in the Ajax Event Calendar plugin.', AEC_NAME)

				, __('Learn how to disable this setting', AEC_NAME)

				, __('in this forum thread', AEC_NAME)

				, __('Ask your host provider for help.', AEC_NAME)));

			}



			// register scripts

			wp_register_script('fullcalendar', AEC_URL . 'js/jquery.fullcalendar.min.js', array('jquery'), '1.5.3', true);

			wp_register_script('simplemodal', AEC_URL . 'js/jquery.simplemodal.1.4.3.min.js', array('jquery'), '1.4.3', true);

			wp_register_script('jquery-ui-datepicker', AEC_URL . 'js/jquery.ui.datepicker.min.js', array('jquery-ui-core'), '1.8.5', true);

			wp_register_script('datepicker-locale', AEC_URL . 'js/i18n/jquery.ui.datepicker-' . substr(get_locale(), 0, 2) . '.js', array('jquery-ui-datepicker'), '1.8.5', true);

			wp_register_script('timepicker', AEC_URL . 'js/jquery.timePicker.min.js', array('jquery'), '5195', true);

			wp_register_script('growl', AEC_URL . 'js/jquery.jgrowl.min.js', array('jquery'), '1.2.5', true);

			wp_register_script('miniColors', AEC_URL . 'js/jquery.miniColors.min.js', array('jquery'), '0.1', true);

			wp_register_script('jeditable', AEC_URL . 'js/jquery.jeditable.min.js', array('jquery'), '1.7.1', true);

			wp_register_script('mousewheel', AEC_URL . 'js/jquery.mousewheel.min.js', array('jquery'), '3.0.6', true);

			wp_register_script('init_admin_calendar', AEC_URL . 'js/jquery.init_admin_calendar.js', array('jquery'), AEC_VERSION, true);

			wp_register_script('init_show_calendar', AEC_URL . 'js/jquery.init_show_calendar.js', array('jquery'), AEC_VERSION, true);

			wp_register_script('init_show_category', AEC_URL . '/js/jquery.init_admin_category.js', array('jquery'), AEC_VERSION, true);

			wp_register_script('tweet', 'http://platform.twitter.com/widgets.js', false, '1.0', true);

			wp_register_script('facebook', 'http://connect.facebook.net/en_US/all.js#xfbml=1', false, '1.0', true);



			// register styles

			wp_register_style('custom', AEC_URL . 'css/custom.css', null, AEC_VERSION);

			wp_register_style('custom_rtl', AEC_URL . 'css/custom_rtl.css', null, AEC_VERSION);

			wp_register_style('jq_ui_css', AEC_URL . 'css/jquery-ui-1.8.16.custom.css', null, '1.8.16');

		}



		function render_admin_menu() {

			if (function_exists('add_options_page')) {

				// main menu page: calendar

				$page = add_menu_page('Ajax Event Calendar',  __('Calendar', AEC_NAME), 'aec_add_events', AEC_FILE, array($this, 'render_admin_calendar'), AEC_URL . 'css/images/em-icon-16.png', AEC_MENU_POSITION);



				// calendar admin specific scripts and styles

				add_action("admin_print_scripts-$page", array($this, 'admin_calendar_scripts'));

				add_action("admin_print_styles-$page", array($this, 'calendar_styles'));



				if (current_user_can('aec_manage_calendar')) {

					// sub menu page: category management

					$sub_category = add_submenu_page(AEC_FILE, 'Categories', __('Categories', AEC_NAME), 'aec_manage_calendar', 'aec_manage_categories', array($this, 'render_admin_category'));



					// category admin specific scripts and styles

					add_action("admin_print_scripts-$sub_category", array($this, 'admin_category_scripts'));

					add_action("admin_print_scripts-$sub_category", array($this, 'admin_social_scripts'));

					add_action("admin_print_styles-$sub_category", array($this, 'admin_category_styles'));



					// sub menu page: activity report

					$sub_report = add_submenu_page(AEC_FILE, 'Activity Report', __('Activity Report', AEC_NAME), 'aec_manage_calendar', 'aec_activity_report', array($this, 'render_activity_report'));

					add_action("admin_print_scripts-$sub_report", array($this, 'admin_social_scripts'));

					add_action("admin_print_styles-$sub_report", array($this, 'calendar_styles'));



					// sub menu page: calendar options

					$sub_options = add_submenu_page(AEC_FILE, 'Options', __('Options', AEC_NAME), 'aec_manage_calendar', 'aec_calendar_options', array($this, 'render_calendar_options'));

					add_action("admin_print_scripts-$sub_options", array($this, 'admin_social_scripts'));

					add_action("admin_print_styles-$sub_options", array($this, 'calendar_styles'));

				}

			}

		}



		// STYLES, SCRIPTS & VIEWS

		function localized_variables() {

			$options = get_option('aec_options');



			// initialize required form fields

			foreach ($options as $option => $value) {

				if ($value == 2) {

					$this->add_required_field($option);

				}

			}



			$isEuroDate	= $this->parse_date_format(AEC_WP_DATE_FORMAT);

			$is24HrTime	= $this->parse_time_format(AEC_WP_TIME_FORMAT);



			return array(

				'is_rtl'					=> is_rtl(),

				'locale'					=> AEC_LOCALE,

				'start_of_week' 			=> get_option('start_of_week'),

				'step_interval'				=> intval($options['step_interval'], 10),

				'datepicker_format' 		=> ($isEuroDate) ? 'dd-mm-yy' : 'mm/dd/yy',		// jquery datepicker format

				'is24HrTime'				=> $is24HrTime,

				'show_weekends'				=> $options['show_weekends'],

				'agenda_time_format' 		=> ($is24HrTime) ? 'H:mm{ - H:mm}' : 'h:mmt{ - h:mmt}',

				'other_time_format' 		=> ($is24HrTime) ? 'H:mm' : 'h:mmt',

				'axis_time_format' 			=> ($is24HrTime) ? 'HH:mm' : 'h:mmt',

				'limit' 					=> $options['limit'],

				'today'						=> __('Today', AEC_NAME),

				'all_day'					=> __('All Day', AEC_NAME),

				'years'						=> __('Years', AEC_NAME),

				'year'						=> __('Year', AEC_NAME),

				'months'					=> __('Months', AEC_NAME),

				'month'						=> __('Month', AEC_NAME),

				'weeks'						=> __('Weeks', AEC_NAME),

				'week'						=> __('Week', AEC_NAME),

				'days'						=> __('Days', AEC_NAME),

				'day'						=> __('Day', AEC_NAME),

				'hours'						=> __('Hours', AEC_NAME),

				'hour'						=> __('Hour', AEC_NAME),

				'minutes'					=> __('Minutes', AEC_NAME),

				'minute'					=> __('Minute', AEC_NAME),

				'january' 					=> __('January', AEC_NAME),

				'february'					=> __('February', AEC_NAME),

				'march' 					=> __('March', AEC_NAME),

				'april' 					=> __('April', AEC_NAME),

				'may' 						=> __('May', AEC_NAME),

				'june' 						=> __('June', AEC_NAME),

				'july' 						=> __('July', AEC_NAME),

				'august' 					=> __('August', AEC_NAME),

				'september'					=> __('September', AEC_NAME),

				'october' 					=> __('October', AEC_NAME),

				'november' 					=> __('November', AEC_NAME),

				'december'					=> __('December', AEC_NAME),

				'jan' 						=> __('Jan', AEC_NAME),

				'feb' 						=> __('Feb', AEC_NAME),

				'mar' 						=> __('Mar', AEC_NAME),

				'apr' 						=> __('Apr', AEC_NAME),

				'may_short' 				=> _x('May', 'Three-letter month name abbreviation', AEC_NAME),

				'jun' 						=> __('Jun', AEC_NAME),

				'jul' 						=> __('Jul', AEC_NAME),

				'aug' 						=> __('Aug', AEC_NAME),

				'sep' 						=> __('Sep', AEC_NAME),

				'oct' 						=> __('Oct', AEC_NAME),

				'nov' 						=> __('Nov', AEC_NAME),

				'dec'						=> __('Dec', AEC_NAME),

				'sunday'					=> __('Sunday', AEC_NAME),

				'monday'					=> __('Monday', AEC_NAME),

				'tuesday'					=> __('Tuesday', AEC_NAME),

				'wednesday'					=> __('Wednesday', AEC_NAME),

				'thursday'					=> __('Thursday', AEC_NAME),

				'friday'					=> __('Friday', AEC_NAME),

				'saturday'					=> __('Saturday', AEC_NAME),

				'sun'						=> __('Sun', AEC_NAME),

				'mon'						=> __('Mon', AEC_NAME),

				'tue'						=> __('Tue', AEC_NAME),

				'wed'						=> __('Wed', AEC_NAME),

				'thu'						=> __('Thu', AEC_NAME),

				'fri'						=> __('Fri', AEC_NAME),

				'sat'						=> __('Sat', AEC_NAME),

				'close_event_form'			=> __('Close Event Form', AEC_NAME),

				'loading_event_form'		=> __('Loading Event Form...', AEC_NAME),

				'update_btn'				=> __('Update', AEC_NAME),

				'delete_btn'				=> __('Delete', AEC_NAME),

				'category_type'				=> __('Category type', AEC_NAME),

				'hide_all_notifications'	=> __('hide all notifications', AEC_NAME),

				'has_been_created'			=> __('has been created.', AEC_NAME),

				'has_been_modified'			=> __('has been modified.', AEC_NAME),

				'has_been_deleted'			=> __('has been deleted.', AEC_NAME),

				'add_event'					=> __('Add Event', AEC_NAME),

				'edit_event'				=> __('Edit Event', AEC_NAME),

				'delete_event'				=> __('Delete this event?', AEC_NAME),

				'loading'					=> __('Loading Events...', AEC_NAME),

				'category_filter_label'		=> __('Category filter label', AEC_NAME),

				'repeats_every'				=> __('Repeats Every', AEC_NAME),

				'until'						=> __('Until', AEC_NAME),

				'success'					=> __('Success!', AEC_NAME),

				'whoops'					=> __('Whoops!', AEC_NAME)

			);

		}



		function admin_calendar_variables() {

			$is_admin	= (current_user_can('aec_manage_events')) ? 1 : 0;

			$options	= get_option('aec_options');

			return array_merge($this->localized_variables(),

				array(

					'admin' 					=> $is_admin,

					'scroll'					=> $options['scroll'],

					'required_fields'			=> join(",", $this->get_required_fields()),

					'editable'					=> true,

					'error_no_rights'			=> __('You cannot edit events created by other users.', AEC_NAME),

					'error_past_create'			=> __('You cannot create events in the past.', AEC_NAME),

					'error_future_create'		=> __('You cannot create events more than a year in advance.', AEC_NAME),

					'error_past_resize'			=> __('You cannot resize expired events.', AEC_NAME),

					'error_past_move'			=> __('You cannot move events into the past.', AEC_NAME),

					'error_past_edit'			=> __('You cannot edit expired events.', AEC_NAME),

					'error_invalid_duration'	=> __('Invalid duration.', AEC_NAME)

				)

			);

		}



		function frontend_calendar_variables() {

			return array_merge($this->localized_variables(),

					array(

						'ajaxurl'               => admin_url('admin-ajax.php', is_ssl() ? 'https' : 'http'),

						'editable'				=> false

					)

			);

		}



		function admin_category_variables() {

			return array_merge($this->localized_variables(),

				array(

					'error_blank_category'		=> __('Category type cannot be a blank value.', AEC_NAME),

					'confirm_category_delete'	=> __('Are you sure you want to delete this category type?', AEC_NAME),

					'confirm_category_reassign'	=> __('Several events are associated with this category. Click OK to reassign these events to the default category.', AEC_NAME),

					'events_reassigned'			=> __('Events have been reassigned to the default category.', AEC_NAME)

				)

			);

		}



		function calendar_styles() {

			// disabled: until I can conditionally load these scripts in text widgets with shortcodes

			// if ($this->has_shortcode('calendar') || $this->has_shortcode('eventlist')) {

			wp_enqueue_style('jq_ui_css');

			wp_enqueue_style('categories');

			wp_enqueue_style('custom');

			if (is_rtl()) {

				wp_enqueue_style('custom_rtl');

			}

			//}

		}



		function admin_category_styles() {

			wp_enqueue_style('categories');

			wp_enqueue_style('custom');

			if (is_rtl()) {

				wp_enqueue_style('custom_rtl');

			}

		}



		function admin_calendar_scripts() {

			wp_enqueue_script('jquery');

			wp_enqueue_script('jquery-ui-core');

			wp_enqueue_script('jquery-ui-draggable');

			wp_enqueue_script('jquery-ui-resizable');

			wp_enqueue_script('jquery-ui-datepicker');

			if (AEC_LOCALE != 'en') {

				wp_enqueue_script('datepicker-locale');	// if not in English, load localization

			}

			wp_enqueue_script('fullcalendar');

			wp_enqueue_script('simplemodal');

			wp_enqueue_script('growl');

			wp_enqueue_script('timepicker');

			wp_enqueue_script('mousewheel');

			wp_enqueue_script('init_admin_calendar');

			wp_localize_script('init_admin_calendar', 'custom', $this->admin_calendar_variables());

		}



		function frontend_calendar_scripts() {

			if (is_admin()) {

				return;

			}

			wp_enqueue_script('jquery');

			wp_enqueue_script('fullcalendar');

			wp_enqueue_script('simplemodal');

			wp_enqueue_script('mousewheel');

			wp_enqueue_script('growl');

			wp_enqueue_script('jquery-ui-datepicker');

			if (AEC_LOCALE != 'en') {

				wp_enqueue_script('datepicker-locale');	// if not in English, load localization

			}

			wp_enqueue_script('init_show_calendar');

			wp_localize_script('init_show_calendar', 'custom', $this->frontend_calendar_variables());

		}



		function admin_social_scripts() {

			wp_enqueue_script('tweet');

			wp_enqueue_script('facebook');

		}



		function admin_category_scripts() {

			wp_enqueue_script('jquery');

			wp_enqueue_script('growl');

			wp_enqueue_script('miniColors');

			wp_enqueue_script('jeditable');

			wp_enqueue_script('init_show_category');

			wp_localize_script('init_show_category', 'custom', $this->admin_category_variables());

		}



		function render_aec_version() {

			return "<span class='aec-credit'>AEC v" . AEC_VERSION . "</span>\n";

		}

		

		function render_admin_calendar() {

			if (!current_user_can('aec_add_events')) {

				wp_die(__('You do not have sufficient permissions to access this page.', AEC_NAME));

			}

			$options = get_option('aec_options');

			$out  = $this->generate_css();

			$out .= "<div class='wrap'>\n";

			$out .= "<a href='". AEC_HOMEPAGE . "' target='_blank'><span class='em-icon icon32'></span></a>\n";

			$out .= $this->render_category_filter($options);

			$out .= "<h2>" . __('Ajax Event Calendar', AEC_NAME) . "</h2>\n";

			$out .= "<div id='aec-calendar'></div>\n";

			$out .= $this->render_aec_version();

			$out .= "</div>\n";

			echo $out;

		}



		function render_shortcode_calendar($atts) {

			extract(shortcode_atts(array(

				'categories'	=> '',

				'excluded'		=> 0,

				'filter'		=> 'all',

				'month'			=> date('m'),

				'year'			=> date('Y'),

				'view' 			=> 'month',

				'views' 		=> 'month,agendaWeek',

				'nav'			=> 'prev,next, today',

				'height'		=> '',

				'scroll'		=> 0,

				'mini'			=> 0

			), $atts));



			// shortcode input validation

			$isTrue 		= array("true", "1");

			$isFalse		= array("false", "0");

			$viewopts 		= array("month", "agendaWeek", "agendaDay", "basicWeek", "basicDay");

			$categories 	= $this->cleanse_shortcode_input($categories);

			$excluded		= ($categories && $excluded) ? $excluded : 0;



			if (in_array($filter, $isFalse, true)) {

				$filter = false;

			} elseif (intval($filter)) {

				$filter = 'cat' . intval($filter);

			} else {

				$filter = 'all';

			}

			

			$month = intval($month)-1;

			

			if ($year != date('Y')) {

				$year = intval($year);

			}

			

			if (!in_array($view, $viewopts)) {

				$view = 'month';

			}



			if (!intval($height)) {

				$height = '';

			}

			

			if (in_array($scroll, $isTrue, true)) {

				$scroll = 1;

			}

			

			if (in_array($mini, $isTrue, true)) {

				$mini = 1;

				$views = '';

				$filter = 0;

				$height = 200;

			}



			$out  = $this->generate_css();

			

			// pass shortcode parameters to javascript

			$out .= "<script type='text/javascript'>\n";

			$out .= "var shortcode = {\n";

			$out .= "categories: '{$categories}',\n";

			$out .= "excluded: {$excluded},\n";

			$out .= "filter: '{$filter}',\n";

			$out .= "view: '{$view}',\n";

			$out .= "month: {$month},\n";

			$out .= "year: {$year},\n";

			$out .= "views: '{$views}',\n";

			$out .= "nav: '{$nav}',\n";

			$out .= "height: '{$height}',\n";

			$out .= "scroll: {$scroll},\n";

			$out .= "mini: {$mini}\n";

			$out .= "};\n";

			$out .= "</script>\n";



			$out .= "<div id='aec-container'>\n";

			$out .= "<div id='aec-header'>\n";

			$options = get_option('aec_options');

			if ($options['menu']) {

				$out .= "<div id='aec-menu'>\n";

				$out .= "<a href='" . admin_url() . "admin.php?page=ajax-event-calendar.php'>" . __('Add Events', AEC_NAME) . "</a>";

				$out .= "</div>\n";

			}

			if ($filter) {

				$out .= $this->render_category_filter($options, $categories, $excluded);

			}

			$out .= "</div>\n";

			$out .= "<div id='aec-calendar'></div>\n";

			$out .= $this->render_aec_version();

			$out .= "</div>\n";

			return $out;

		}



		function render_shortcode_eventlist($atts) {

			// shortcode defaults

			extract(shortcode_atts(array(

				'categories'	=> false,

				'excluded'		=> false,

				'start'			=> date('Y-m-d'),

				'end'			=> date('Y-m-d', mktime(0, 0, 0, date("m"), date("d"), date("Y")+1)),

				'limit'			=> 4,

				'whitelabel'	=> false,

				'noresults'		=> __('No upcoming events', AEC_NAME)

			), $atts));



			// shortcode input validation

			$categories	 	= (isset($categories)) ? $this->cleanse_shortcode_input($categories) : false;

			$excluded		= ($categories && isset($excluded)) ? $excluded : false;

			$limit 			= ($limit == "none") ? false : intval($limit);

			$whitelabel 	= ($whitelabel == "true") ? true : false;

			$start			= date('Y-m-d', strtotime($start));

			$end			= date('Y-m-d', strtotime($end));



			$events			= $this->db_query_events($start, $end, $categories, $excluded, $limit);

			$events 		= $this->process_events($events, $start, $end, true);

			$out = $this->generate_css();

			$out .= "<ul class='aec-eventlist'>";

			if ($events) {

				$out .= $this->render_eventlist_events($events, $whitelabel, $limit);

			} else {

				$out .= "<li>{$noresults}</li>";

			}

			$out .= "</ul>\n";

			$out .= $this->render_aec_version();

			return $out;

		}



		function render_calendar_events() {

			$categories	 	= (isset($_POST['categories'])) ? $this->cleanse_shortcode_input($_POST['categories']) : false;

			$excluded		= ($categories && isset($_POST['excluded'])) ? $_POST['excluded'] : false;

			$start			= date('Y-m-d', $_POST['start']);

			$end			= date('Y-m-d', $_POST['end']);

			$readonly		= (isset($_POST['readonly'])) ? true : false;



			$events			= $this->db_query_events($start, $end, $categories, $excluded);



			$this->render_json($this->process_events($events, $start, $end, $readonly));

		}



		function render_eventlist_events($events, $whitelabel, $limit) {

			usort($events, array($this, 'array_compare_order'));

			$rows = $this->convert_array_to_object($events);

			$out = '';

			foreach ($rows as $count => $row) {

				//if ($count < $limit) {

				if (!$limit || $count < $limit) {

				

					// split database formatted datetime value into display formatted date and time values

					$row->start_date	= $this->convert_date($row->start, AEC_DB_DATETIME_FORMAT, AEC_WP_DATE_FORMAT);

					$row->start_time 	= $this->convert_date($row->start, AEC_DB_DATETIME_FORMAT, AEC_WP_TIME_FORMAT);

					$row->end_date 		= $this->convert_date($row->end, AEC_DB_DATETIME_FORMAT, AEC_WP_DATE_FORMAT);

					$row->end_time 		= $this->convert_date($row->end, AEC_DB_DATETIME_FORMAT, AEC_WP_TIME_FORMAT);



					// link to event

					$class = ($whitelabel) ? '' : ' ' . $row->className;

					$out .= '<li class="fc-event round5' . $class . '" onClick="jQuery.aecDialog({\'id\':' . $row->id . ',\'start\':\'' . $row->start . '\',\'end\':\'' . $row->end . '\'});">';

					$out .= '<span class="fc-event-time">';

					$out .= $row->start_date;



					if (!$row->allDay) {

						$out .= ' ' . $row->start_time;

					}

					$out .= '</span>';

					$out .= '<span class="fc-event-title">' . $this->render_i18n_data($row->title) . '</span>';

					$out .= '</li>';

				}

			}

			return $out;

		}



		function render_category_filter($options, $categories=false, $excluded=false) {

			$categories = $this->db_query_categories($categories, $excluded);

			if (sizeof($categories) > 1) {

				$out = "<ul id='aec-filter'>\n";

				$out .= "<li>" . $this->render_i18n_data($options['filter_label']) . "</li>\n";

				$out .= '<li class="active"><a class="round5 all">' . __('All', AEC_NAME) . '</a></li>' . "\n";

				foreach ($categories as $category) {

					$out .= '<li><a class="round5 cat' . $category->id . '">' . $this->render_i18n_data($category->category) . '</a></li>' . "\n";

				}

				$out .= "</ul>\n";

				return $out;

			}

		}



		function render_admin_modal() {

			if (!current_user_can('aec_add_events')) {

				wp_die(__('You do not have sufficient permissions to access this page.', AEC_NAME));

			}

			require_once AEC_PATH . 'inc/admin-event.php';

			exit();

		}



		function render_frontend_modal() {

			require_once AEC_PATH . 'inc/show-event.php';

		}



		function render_admin_category() {

			if (!current_user_can('aec_manage_calendar')) {

				wp_die(__('You do not have sufficient permissions to access this page.', AEC_NAME));

			}

			$add  = $this->generate_css();

			$add .= $this->add_wrap(__('To add a new category, enter a category label and select a background color.', AEC_NAME), "<p>", "</p>");

			$add .= "<form id='aec-category-form'>\n";

			$add .= "<input type='hidden' id='fgcolor' name='fgcolor' class='fg ltr' value='#FFFFFF' />";

			$add .= "<p><input type='text' id='category' name='category' value='' /> ";

			$add .= "<input class='bg colors ltr' type='text' id='bgcolor' name='bgcolor' value='#005294' size='7' maxlength='7' autocomplete='off' /> ";

			$add .= $this->add_wrap(__('Add', AEC_NAME), "<button class='add button-primary'>", "</button></p>");

			$add .= "</form>\n";



			$aec_options = get_option('aec_options');

			$add .= $this->add_wrap(__('Category filter label', AEC_NAME), "<p>", "</p>");

			$add .= $this->add_wrap("<input type='text' name='filter_label' id='filter_label' value='" . esc_attr($this->render_i18n_data($aec_options['filter_label'])) . "' />", "<p>", "");

			$add .= $this->add_wrap(__('Update', AEC_NAME), "<button id='filter_update' class='filter-update button-secondary'>", "</button></p>");



			$add .= $this->add_wrap(__('Category IDs are displayed in color bubbles at the beginning of each row.' , AEC_NAME), "<p>", "<br/>");

			$add  .= $this->add_wrap(__('To change category color, click the color swatch or edit the hex color value and click Update.', AEC_NAME), "", "</p>");

			$add .= "<form id='aec-category-list'>\n";

			$categories = $this->db_query_categories();

			foreach ($categories as $category) {

				$add .= "<p id='id_{$category->id}'>\n";

				$add .= "<input type='hidden' name='fgcolor' value='#{$category->fgcolor}' class='fg ltr' />\n";

				$add .= "<span class='round5 cat{$category->id}'>{$category->id}</span> ";

				$add .= "<input type='text' name='category' value='" . $this->render_i18n_data($category->category) . "' class='edit' />\n";

				$add .= "<input type='text' name='bgcolor' size='7' maxlength='7' autocomplete='off' value='#{$category->bgcolor}' class='bg colors ltr' />\n";

				$add .= $this->add_wrap(__('Update', AEC_NAME), "<button class='update button-secondary'>", "</button>");

				if ($category->id > 1) {

					$add .= $this->add_wrap(__('Delete', AEC_NAME), "<button class='button-secondary delete'>", "</button>");

				}

				$add .= "</p>\n";

			}

			$add .= "</form>\n";

			$out = $this->add_panel(__('Manage Categories', AEC_NAME), $add);

			$top = "<a href='http://". AEC_HOMEPAGE . "' target='_blank'><span class='em-icon icon32'></span></a>\n";

			$top .= $this->add_wrap(__('Categories', AEC_NAME), "<h2>", "</h2>");



			$out = $this->add_wrap($out, "<div class='postbox-container' style='width:65%'>", "</div>");

			$out .= $this->add_sidebar();

			echo $this->add_wrap($out, "<div class='wrap'>{$top}", "</div>");

		}



		function render_activity_report() {

			if (!current_user_can('aec_manage_calendar')) {

				wp_die(__('You do not have sufficient permissions to access this page.', AEC_NAME));

			}



			$rows = $this->db_query_monthly_activity();

			$out  = $this->generate_css();

			if (count($rows)) {

				foreach ($rows as $row) {

					$out .= "<p class='round5 cat{$row->category_id}'>{$row->cnt} ";

					$out .= $this->render_i18n_data($row->category);

					$out .= " " . _n('Event', 'Events', $row->cnt, AEC_NAME);

					$out .= "</p>\n";

				}

				$out .= $this->add_wrap(__('NOTE: Each repeating event is counted once.', AEC_NAME), "<p><em>", "</em></p>");

			} else {

				$out .= $this->add_wrap(__('No events this month.', AEC_NAME), "<p><em>", "</em></p>");

			}



			$out = $this->add_panel(__('Number of events scheduled for the current month, by category:', AEC_NAME), $out);



			$top = "<a href='http://". AEC_HOMEPAGE . "' target='_blank'><span class='em-icon icon32'></span></a>\n";

			$top .= $this->add_wrap(__('Activity Report', AEC_NAME), "<h2>", "</h2>");



			$out = $this->add_wrap($out, "<div class='postbox-container' style='width:65%'>", "</div>");

			$out .= $this->add_sidebar();

			echo $this->add_wrap($out, "<div class='wrap'>{$top}", "</div>");

		}



		function render_calendar_options() {

			if (!current_user_can('aec_manage_calendar')) {

				wp_die(__('You do not have sufficient permissions to access this page.', AEC_NAME));

			}

			require_once AEC_PATH . 'inc/admin-options.php';

		}



		function process_events($events, $start, $end, $readonly) {

			if ($events) {

				$output	= array();

				foreach ($events as $event) {

					$event->view_start = $start;

					$event->view_end = $end;

					$event = $this->process_event($event, $readonly, true);

					if (is_array($event)) {

						foreach ($event as $repeat) {

							array_push($output, $repeat);

						}

					} else {

						array_push($output, $event);

					}

				}

				return $output;

			}

		}



		function process_event($input, $readonly=false, $queue=false) {

			$output = array();

			if ($repeats = $this->generate_repeating_event($input)) {

				foreach ($repeats as $repeat) {

					array_push($output, $this->generate_event($repeat, $this->return_auth($readonly), $queue));

				}

			} else {

				array_push($output, $this->generate_event($input, $this->return_auth($readonly), $queue));

			}



			if ($queue) {

				return $output;

			}

			$this->render_json($output);

		}



		function generate_repeating_event($event) {

			if ($event->repeat_freq) {

				$event_start	= strtotime($event->start);

				$event_end		= strtotime($event->end);

				$repeat_end		= strtotime($event->repeat_end) + 86400;

				$view_start		= strtotime($event->view_start);

				$view_end		= strtotime($event->view_end);

				$repeats		= array();



				while($event_start < $repeat_end) {

					if ($event_start >= $view_start && $event_start <= $view_end) {

						$event 		 	= clone $event;	// clone event details and override dates

						$event->start 	= date(AEC_DB_DATETIME_FORMAT, $event_start);

						$event->end 	= date(AEC_DB_DATETIME_FORMAT, $event_end);

						array_push($repeats, $event);

					}

					$event_start 	= $this->get_next_date($event_start, $event->repeat_freq, $event->repeat_int);

					$event_end 		= $this->get_next_date($event_end, $event->repeat_freq, $event->repeat_int);

				}

				return $repeats;

			}

			return false;

		}



		function get_next_date($date, $freq, $int) {

			if ($int == 0) return strtotime("+" . $freq . " days", $date);

			if ($int == 1) return strtotime("+" . $freq . " weeks", $date);

			if ($int == 2) return $this->get_next_month($date, $freq);

			if ($int == 3) return $this->get_next_year($date, $freq);

		}



		function get_next_month($date, $n = 1) {

			$newDate = strtotime("+{$n} months", $date);

			// adjustment for events that repeat on the 29th, 30th and 31st of a month

			if (date('j', $date) !== (date('j', $newDate))) {

				$newDate = strtotime("+" . $n+1 . " months", $date);

			}

			return $newDate;

		}



		function get_next_year($date, $n = 1) {

			$newDate = strtotime("+{$n} years", $date);

			// adjustment for events that repeat on february 29th

			if (date('j', $date) !== (date('j', $newDate))) {

				$newDate = strtotime("+" . $n+3 . " years", $date);

			}

			return $newDate;

		}



		function generate_event($input, $user_id) {

			$permissions = new stdClass();

			$permissions 	= $this->get_event_permissions($input, $user_id);

			$repeats		= ($input->repeat_freq) ? ' aec-repeating' : '';

			$output 		= array(

				'id'	 	=> $input->id,

				'title'  	=> $input->title,

				'start'		=> $input->start,

				'end'		=> $input->end,

				'allDay' 	=> ($input->allDay) ? true : false,

				'className'	=> "cat{$input->category_id}{$permissions->cssclass}{$repeats}",

				'editable'	=> $permissions->editable,

				'repeat_i'	=> $input->repeat_int,

				'repeat_f'	=> $input->repeat_freq,

				'repeat_e'	=> $input->repeat_end

			);

			return $output;

		}



		function get_event_permissions($input, $user_id) {

			$permissions = new stdClass();

			// users that are not logged-in see all events

			if ($user_id == -1) {

				$permissions->editable = false;

				$permissions->cssclass = '';

			} else {

				// users with aec_manage_events capability can edit all events

				// users with aec_add_events capability can edit events only they create

				if ($input->user_id == $user_id || $user_id == false) {

					$permissions->editable = true;

					$permissions->cssclass = '';

				} else {

					$permissions->editable = false;

					$permissions->cssclass = ' fc-event-disabled';

				}

			}

			return $permissions;

		}



		// OPTION CONTROLS

		function add_panel($name, $content) {

			$before = "<div class='metabox-holder'>\n";

			$before .= "<div class='postbox'>\n";

			$before .= "<h3 style='cursor:default'><span>{$name}</span></h3>\n";

			$before .= "<div class='inside'>\n";

			$after = str_repeat("</div>\n", 3);

			return $this->add_wrap($content, $before, $after);

		}



		function add_hidden_field($field, $value=false) {

			if ($value === false) {

				$aec_options 	= get_option('aec_options');

				$value 			= $aec_options[$field];

			}

			return "<input type='hidden' name='aec_options[{$field}]' value='{$value}' />\n";

		}



		function add_text_field($field, $label, $tip=false) {

			$aec_options = get_option('aec_options');

			$out = "<label for='{$field}' class='semi'>{$label}</label>\n";

			$out .= "<input type='text' name='aec_options[{$field}]' id='{$field}' value='" . esc_attr($aec_options[$field]) . "' />\n";

			if ($tip) {

				$out .= "<span class='description'>{$tip}</span>\n";

			}

			return $this->add_wrap($out, '<p class="hhh">', '</p>');

		}



		function add_checkbox_field($field, $label, $tip=false) {

			$aec_options = get_option('aec_options');

			$checked = ($aec_options[$field]) ? ' checked="checked" ' : ' ';

			$out  = $this->add_hidden_field($field, 0);

			$out .= "<input type='checkbox' name='aec_options[{$field}]' id='{$field}' value='1' {$checked} />\n";

			$out .= "<label for='{$field}' class='auto'>{$label}</label>\n";

			if ($tip) {

				$out .= "<span class='description'>{$tip}</span>\n";

			}



			return $this->add_wrap($out, '<p class="hhh">', '</p>');

		}



		function add_select_field($field, $label, $options, $values=false) {

			$aec_options = get_option('aec_options');

			$out = "<label for='{$field}'>{$label}</label>\n";

			$out .= "<select id='{$field}' class='semi' name='aec_options[{$field}]'>";

			foreach ($options as $option => $value) {

				if (is_numeric($value)) $option = $value;

				if ($values) {

					$option = $values[$option];

				}

				$out .= "<option value='{$option}' name='aec_options[{$field}]' " . selected($aec_options[$field], $option, false) . ">{$value}</option>\n";

			}

			$out .= "</select>\n";

			return $this->add_wrap($out, '<p class="hhh">', '</p>');

		}



		function add_wrap($content, $before='', $after='') {

			return "{$before}{$content}{$after}\n";

		}



		function add_sidebar() {

			$help = $this->add_wrap(__('Read about installation and options', AEC_NAME), "<p><a href='" . AEC_HOMEPAGE . "installation/' target='_blank'>", "</a>.</p>");

			$help .= $this->add_wrap(__('Review the FAQ', AEC_NAME), "<p><a href='" . AEC_HOMEPAGE . "faq/' target='_blank'>", "</a>.</p>");

			$help .= $this->add_wrap(__('Ask for help in the WordPress forum', AEC_NAME), "<p><a href='http://wordpress.org/tags/ajax-event-calendar' target='_blank'>", "</a>.</p>");

			$help .= $this->add_wrap(__('Use the issue tracker', AEC_NAME), "<p><a href='http://code.google.com/p/wp-aec/issues/list' target='_blank'>", "</a> ");

			$help .= $this->add_wrap(__('to track and report bugs, feature requests, and to submit', AEC_NAME), "", "");

			$help .= $this->add_wrap(__('poEdit', AEC_NAME), " (<a href='http://weblogtoolscollection.com/archives/2007/08/27/localizing-a-wordpress-plugin-using-poedit/' target='_blank'>", "</a>)");

			$help .= $this->add_wrap(__('translation files', AEC_NAME), "", ".</p>");



			$like  = $this->add_wrap(__('Give the plugin a good rating', AEC_NAME), "<p><a href='" . AEC_HOMEPAGE . "' target='_blank'>", "</a>.</p>");

			$like .= $this->add_wrap(__('Make a donation in recognition of countless hours spent making this plugin', AEC_NAME), "<p>", "</p>");

			$like .= $this->add_wrap("<form style='text-align:center' action='https://www.paypal.com/cgi-bin/webscr' method='post'><input type='hidden' name='cmd' value='_s-xclick' /><input type='hidden' name='hosted_button_id' value='NCDKRE46K2NBA' /><input type='image' src='https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif' name='submit' alt='PayPal - The safer, easier way to pay online!' /><img alt='' border='0' src='https://www.paypalobjects.com/en_US/i/scr/pixel.gif' width='1' height='1' /></form>", "<p>", "</p>");



			$social = $this->add_wrap(__('Create a blog review or an instructional video about the Calendar and share it', AEC_NAME), "<p>", ".</p>");

			$social .= $this->add_wrap("<a href='http://twitter.com/share' class='twitter-share-button' data-url='" . AEC_HOMEPAGE . "' data-count='horizontal' data-via='Ajax Event Calendar WordPress Plugin'>Tweet</a>", "<p>", "</p>");

			$social .= $this->add_wrap("<fb:like href='" . AEC_HOMEPAGE . "'; layout='standard' show_faces='true' width='150' font='arial'></fb:like>", "<p>", "</p>");



			$sidebar  = $this->add_panel(__('Support', AEC_NAME), $help);

			$sidebar .= $this->add_panel(__('Share the Love', AEC_NAME), $like);

			$sidebar .= $this->add_panel(__('Spread the Word', AEC_NAME), $social);

			return $this->add_wrap($sidebar, "<div class='postbox-container' style='margin-left:10px; width:20%'>", "</div>");

		}



		// USER ACTIONS

		function add_event() {

			if (!isset($_POST['event'])) {

				return;

			}

			$this->db_insert_event($this->cleanse_event_input($_POST['event']), true);

		}



		function copy_event() {

			if (!isset($_POST['event'])) {

				return;

			}

			$input = $this->cleanse_event_input($_POST['event']);

			$input->user_id = $this->return_current_user_id();

			$this->db_insert_event($input, true);

		}



		function move_event() {

			if (!isset($_POST['event']))

				return;

			$input 				= $this->convert_array_to_object($_POST['event']);

			$offset				= $input->dayDelta*86400 + $input->minuteDelta*60;

			$event 				= $this->db_query_event($input->id);

			$twoHours			= 7200;



			$event->allDay		= $input->allDay;

			$event->end			= date(AEC_DB_DATETIME_FORMAT, strtotime($event->end) + $offset);

			$event->repeat_end	= date(AEC_DB_DATETIME_FORMAT, strtotime($event->repeat_end) + $offset);

			if ($input->resize) { $offset = 0; }

			$event->start 		= date(AEC_DB_DATETIME_FORMAT, strtotime($event->start) + $offset);

			// add an end date for events with a null end date

			if (isset($input->end)) {

			//if (!$input->allDay && !isset($input->end)) {

				$event->end		= date(AEC_DB_DATETIME_FORMAT, strtotime($event->start) + $twoHours);

			}

			

			$event->view_start	= $input->view_start;

			$event->view_end 	= $input->view_end;

			$this->db_update_event($event);

		}



		function update_event() {

			if (!isset($_POST['event'])) {

				return;

			}

			$this->db_update_event($this->cleanse_event_input($_POST['event']));

		}



		function delete_event() {

			if (!isset($_POST['id'])) {

				return;

			}

			$this->db_delete_event($_POST['id']);

		}



		function delete_events_by_user() {

			if (!isset($_POST['user_id'])) {

				return;

			}

			$this->db_delete_events_by_user($_POST['user_id']);

		}



		function update_filter_label() {

			if (!isset($_POST['label'])) {

				return;

			}

			$this->overwrite_option('filter_label', $this->cleanse_data_input($_POST['label']));

		}



		// outputs added/updated category as json

		function render_category($input) {

			$output = array(

				'id'	 	=> $input->id,

				'category'  => $input->category,

				'bgcolor'	=> $input->bgcolor,

				'fgcolor'	=> $input->fgcolor

			);

			$this->render_json($output);

		}



		function add_category() {

			if (!isset($_POST['category_data'])) {

				return;

			}

			$this->db_insert_category($this->cleanse_category_input($_POST['category_data']));

		}



		function update_category() {

			if (!isset($_POST['category_data'])) {

				return;

			}

			$this->db_update_category($this->cleanse_category_input($_POST['category_data']));

		}



		function reassign_category() {

			if (!isset($_POST['id'])) {

				return;

			}

			$this->db_reassign_category($_POST['id']);

		}



		function confirm_delete_category() {

			if (!isset($_POST['id'])) {

				return;

			}

			if ($this->db_query_events_by_category($_POST['id'])) {

				$this->render_json('false');

			}

			$this->db_delete_category($_POST['id']);

		}





		// DATABASE QUERIES

		function db_query_monthly_activity() {

			global $wpdb;

			$result = $wpdb->get_results('SELECT COUNT(a.category_id) AS cnt, a.category_id, b.category FROM ' .

										$wpdb->prefix . AEC_EVENT_TABLE . ' AS a ' .

										'INNER JOIN ' . $wpdb->prefix . AEC_CATEGORY_TABLE . ' AS b ' .

										'ON a.category_id = b.id ' .

										'WHERE MONTH(start) = MONTH(NOW()) ' .

										'GROUP BY category_id ' .

										'ORDER BY cnt DESC;'

									);

			return $this->return_result($result);

		}



		function db_query_event($id) {

			global $wpdb;

			$result = $wpdb->get_row($wpdb->prepare('SELECT *

									FROM ' . $wpdb->prefix . AEC_EVENT_TABLE . '

									WHERE id = %d ORDER BY start;', $id));

			return $this->return_result($result);

		}



		function db_query_events($start, $end, $category_id, $excluded, $limit=false) {

			global $wpdb;

			$excluded = ($excluded) ? 'NOT IN' : 'IN';

			$andcategory = ($category_id) ? " AND category_id {$excluded}({$category_id})" : '';

			$limit = ($limit) ? " LIMIT {$limit}" : "";

			$result = $wpdb->get_results("SELECT

										id,

										user_id,

										title,

										start,

										end,

										allDay,

										repeat_int,

										repeat_freq,

										repeat_end,

										category_id

										FROM " . $wpdb->prefix . AEC_EVENT_TABLE . "

										WHERE (

										(start >= '{$start}' AND start < '{$end}')

										OR (end >= '{$start}' AND end < '{$end}')

										OR (start <= '{$start}' AND end >= '{$end}')

										OR (start < '{$end}' AND (repeat_freq > 0 AND repeat_end >= '{$start}'))

										)

										{$andcategory} ORDER BY start{$limit};");

			return $this->return_result($result);

		}



		function db_query_events_by_user($user_id) {

			global $wpdb;

			$result = $wpdb->get_var($wpdb->prepare('SELECT count(id)

									 FROM ' . $wpdb->prefix . AEC_EVENT_TABLE . '

									 WHERE user_id = %d;', $user_id));

			return $this->return_result($result);

		}



		function db_query_events_by_category($id) {

			global $wpdb;

			$result = $wpdb->get_var($wpdb->prepare('SELECT COUNT(*) as count

									FROM ' . $wpdb->prefix . AEC_EVENT_TABLE . '

									WHERE category_id = %d;', $id));

			return $this->return_result($result);

		}



		function db_insert_event($input, $render) {

			global $wpdb;

			$result = $wpdb->insert($wpdb->prefix . AEC_EVENT_TABLE,

									array('user_id' 		=> $input->user_id,

										  'title'	 		=> $input->title,

										  'start'			=> $input->start,

										  'end'				=> $input->end,

										  'allDay'			=> $input->allDay,

										  'repeat_freq'		=> $input->repeat_freq,

										  'repeat_int'		=> $input->repeat_int,

										  'repeat_end'		=> $input->repeat_end,

										  'category_id'		=> $input->category_id,

										  'description'		=> $input->description,

										  'link'			=> $input->link,

										  'venue'			=> $input->venue,

										  'address'			=> $input->address,

										  'city'			=> $input->city,

										  'state'			=> $input->state,

										  'zip'				=> $input->zip,

										  'country'			=> $input->country,

										  'contact'			=> $input->contact,

										  'contact_info'	=> $input->contact_info,

										  'access'			=> $input->access,

										  'rsvp'			=> $input->rsvp

										),

									array('%d',				// user_id

										  '%s',				// title

										  '%s',				// start

										  '%s',				// end

										  '%d',				// allDay

										  '%d',				// repeat_freq

										  '%d',				// repeat_int

										  '%s',				// repeat_end

										  '%d',				// category_id

										  '%s',				// description

										  '%s',				// link

										  '%s',				// venue

										  '%s',				// address

										  '%s',				// city

										  '%s',				// state

										  '%s',				// zip

										  '%s',				// country

										  '%s',				// contact

										  '%s',				// contact_info

										  '%d',				// access

										  '%d' 				// rsvp

										)

								);

			if ($this->return_result($result)) {

				if ($render) {

					$input->id = $wpdb->insert_id;		// id of newly created row

					$this->process_event($input);

				}

			}

		}



		function db_update_event($input) {

			global $wpdb;

			$result = $wpdb->update($wpdb->prefix . AEC_EVENT_TABLE,

									array('user_id' 		=> $input->user_id,

										  'title'	 		=> $input->title,

										  'start'			=> $input->start,

										  'end'				=> $input->end,

										  'allDay'			=> $input->allDay,

										  'repeat_freq'		=> $input->repeat_freq,

										  'repeat_int'		=> $input->repeat_int,

										  'repeat_end'		=> $input->repeat_end,

										  'category_id'		=> $input->category_id,

										  'description'		=> $input->description,

										  'link'			=> $input->link,

										  'venue'			=> $input->venue,

										  'address'			=> $input->address,

										  'city'			=> $input->city,

										  'state'			=> $input->state,

										  'zip'				=> $input->zip,

										  'country'			=> $input->country,

										  'contact'			=> $input->contact,

										  'contact_info'	=> $input->contact_info,

										  'access'			=> $input->access,

										  'rsvp'			=> $input->rsvp

										),

									array('id' 				=> $input->id),

									array('%d',				// user_id

										  '%s',				// title

										  '%s',				// start

										  '%s',				// end

										  '%d',				// allDay

										  '%d',				// repeat_freq

										  '%d',				// repeat_int

										  '%s',				// repeat_end

										  '%d',				// category_id

										  '%s',				// description

										  '%s',				// link

										  '%s',				// venue

										  '%s',				// address

										  '%s',				// city

										  '%s',				// state

										  '%s',				// zip

										  '%s',				// country

										  '%s',				// contact

										  '%s',				// contact_info

										  '%d',				// access

										  '%d' 				// rsvp

										),

									array ('%d') 			// id

								);

			if ($this->return_result($result)) {

				$this->process_event($input);

			}

		}



		function db_delete_event() {

			global $wpdb;

			$result = $wpdb->query($wpdb->prepare('DELETE FROM ' . $wpdb->prefix . AEC_EVENT_TABLE . ' WHERE id = %d;', $_POST['id']));

			$this->render_json($this->return_result($result));

		}



		function db_delete_events_by_user($id) {

			global $wpdb;

			$result = $wpdb->query($wpdb->prepare('DELETE FROM ' . $wpdb->prefix . AEC_EVENT_TABLE . ' WHERE user_id = %d;', $id));

			return $this->return_result($result);

		}



		function db_query_categories($category_id=false, $excluded=false) {

			global $wpdb;

			$excluded = ($excluded) ? 'NOT IN' : 'IN';

			$wherecategory = ($category_id) ? " WHERE id {$excluded}({$category_id})" : '';

			$result = $wpdb->get_results('SELECT * FROM ' . $wpdb->prefix . AEC_CATEGORY_TABLE . $wherecategory . ' ORDER BY id;');

			return $this->return_result($result);

		}



		function db_insert_category($input) {

			global $wpdb;

			$result = $wpdb->insert($wpdb->prefix . AEC_CATEGORY_TABLE,

									array('category'	=> $input->category,

										  'bgcolor'		=> $input->bgcolor,

										  'fgcolor' 	=> $input->fgcolor

										),

									array('%s',

										  '%s',

										  '%s'

										)

								);

			if ($this->return_result($result)) {

				$input->id = $wpdb->insert_id;	// id of newly created row

				$this->render_category($input);

			}

		}



		function db_update_category($input) {

			global $wpdb;

			$result = $wpdb->update($wpdb->prefix . AEC_CATEGORY_TABLE,

									array('category'	=> $input->category,

										  'bgcolor'		=> $input->bgcolor,

										  'fgcolor'		=> $input->fgcolor

									),

									array('id' 			=> $input->id),

									array('%s',

										  '%s',

										  '%s'

									),

									array ('%d') //id

								);

			if ($this->return_result($result)) {

				$this->render_category($input);

			}

		}



		function db_reassign_category($id) {

			global $wpdb;

			$result = $wpdb->update($wpdb->prefix . AEC_EVENT_TABLE,

								array('category_id'	=> 1),

								array('category_id' => $id),

								array('%d'),

								array('%d')

							);

			if ($this->return_result($result)) {

				$this->db_delete_category($id);

			}

		}



		function db_delete_category($id) {

			global $wpdb;

			$result = $wpdb->query($wpdb->prepare('DELETE FROM ' . $wpdb->prefix . AEC_CATEGORY_TABLE . ' WHERE id = %d;', $id));

			if ($this->return_result($result)) {

				$this->generate_css();

				$this->render_json($result);

			}

		}



		// UTILITIES

		function parse_input($input) {

			if (!is_array($input)) {

				parse_str($input, $array);	// convert serialized form into array

				$input = $array;

			}

			array_walk($input, create_function('&$val', '$val = trim($val);'));	// trim whitespace from input

			return $input;

		}



		// removes slashes from strings and arrays

		function cleanse_output($output) {

			if (is_array($output)) {

				array_walk_recursive($output, create_function('&$val', '$val = trim(stripslashes($val));'));

			} else {

				$output = stripslashes($output);

			}

			return $output;

		}



		function cleanse_data_input($input) {

			return trim($input);

		}



		function cleanse_event_input($input) {

			$clean 				= $this->convert_array_to_object($this->parse_input($input));

			if ($clean->allDay) {

				$clean->start_time	= '00:00:00';

				$clean->end_time	= '00:00:00';

			}

			$clean->start		= $this->merge_date_time($clean->start_date, $clean->start_time);

			$clean->end			= $this->merge_date_time($clean->end_date, $clean->end_time);

			$clean->repeat_end	= substr($this->merge_date_time($clean->repeat_end, '00:00:00'),0,-9);

			return $clean;

		}



		function cleanse_category_input($input) {

			$clean 			= $this->convert_array_to_object($this->parse_input($input));

			$clean->bgcolor = str_replace('#', '', $clean->bgcolor);	// strip '#' for storage

			$clean->fgcolor = str_replace('#', '', $clean->fgcolor);

			return $clean;

		}



		// convert category string input into array, force integer values, return serialized

		function cleanse_shortcode_input($input) {

			$input = explode(',', $input);

			array_walk($input, create_function('&$val', '$val = intval($val);'));

			return join(',', $input);

		}



		// set required fields on admin event detail form

		function add_required_field($field) {

			array_push($this->required_fields, $field);

		}



		function get_required_fields() {

			if (count($this->required_fields)) {

				return $this->required_fields;

			}

			return;

		}



		function convert_object_to_array($object) {

			$array = array();

			foreach ($object as $key => $value) {

				$array[$key] = $value;

			}

			return $array;

		}



		function convert_array_to_object($array = array()) {

			$return = new stdClass();

			foreach ($array as $key => $val) {

				if (is_array($val)) {

					$return->$key = $this->convert_array_to_object($val);

				} else {

					$return->{$key} = $val;

				}

			}

			return $return;

		}



		function return_result($result) {

			if ($result === false) {

				global $wpdb;

				$this->log($wpdb->print_error());

				return false;

			}

			return $result;

		}



		function return_current_user_id() {

			global $current_user;

			get_currentuserinfo();

			return $current_user->ID;

		}



		function return_auth($readonly = false) {

			if ($readonly) {

				return "-1";

			}

			return (current_user_can('aec_manage_events')) ? false : $this->return_current_user_id();

		}



		function render_i18n_data($data) {

			return htmlentities(stripslashes($data), ENT_COMPAT, 'UTF-8');

		}



		function render_json($output) {

			header("Content-Type: application/json");

			echo json_encode($this->cleanse_output($output));

			exit;

		}



		function generate_css() {

			$categories = $this->db_query_categories();

			

			$out 	  = "<style>";

			foreach ($categories as $category) {

				$out .= ".cat{$category->id}";

				$out .= ",.cat{$category->id} .fc-event-skin";

				$out .= ",.fc-agenda .cat{$category->id}";

				$out .= ",a.cat{$category->id}";

				$out .= ",a.cat{$category->id}:active";

				$out .= ",a.cat{$category->id}:visited{";

				$out .= "color:#{$category->fgcolor} !important;";

				$out .= "background-color:#{$category->bgcolor} !important;";

				$out .= "border-color:#{$category->bgcolor} !important}\n";

				$out .= "a.cat{$category->id}:hover{-moz-box-shadow:0 0 2px #000;-webkit-box-shadow:0 0 2px #000;box-shadow:0 0 2px #000;";

				$out .= "color:#{$category->fgcolor} !important;";

				$out .= "background-color:#{$category->bgcolor} !important;";

				$out .= "border-color:#{$category->fgcolor} !important}\n";

			}

			$out .= "</style>";

			return $out;

		}



		// overwrite option, preserving other serialized options

		function overwrite_option($key, $value) {

			$options = get_option('aec_options');

			$options[$key] = $value;

			update_option('aec_options', $options);

		}



		// if not present, add options

		function insert_option($key, $value) {

			$options = get_option('aec_options');

			if (!array_key_exists($key, $options)) {

				$options[$key] = $value;

			}

			update_option('aec_options', $options);

		}



		function decommission_options($keys) {

			$options = get_option('aec_options');

			foreach ($keys as $key) {

				if (array_key_exists($key, $options)) {

					unset($options[$key]);

				}

			}

			update_option('aec_options', $options);

		}



		function log($message) {

			if (is_array($message) || is_object($message)) {

				error_log(print_r($message, true));

			} else {

				error_log($message);

			}

			return;

		}



		function convert_date($date, $from, $to=false) {

			// if date format is d/m/Y, modify token to 'd-m-Y' so strtotime parses date correctly

			if (strpos($from, 'd') == 0) {

				$date = str_replace("/", "-", $date);

			}

			if ($to) {

				return date_i18n($to, strtotime($date));

			}

			return strtotime($date);

		}



		function parse_date_format($format) {

			// d | j	 1 | 01, day of the month

			// m | n	 3 | 03, month of the year

			// if date format begins with d or j assign Euro format, otherwise US format

			return (strpos($format, 'd') === 0 || strpos($format, 'j') === 0) ? true : false;

		}



		function parse_time_format($format) {

			// H | G	 24-hour, with | without leading zeros

			// g | H	 24-hour, with | without leading zeros

			return (strpos($format, 'G') !== false || strpos($format, 'H') !== false) ? true : false;

		}



		// restricts jquery datepicker format (based on WP date format) to ensure accurate localization

		function get_wp_date_format() {

			return ($this->parse_date_format(AEC_WP_DATE_FORMAT)) ? 'd-m-Y' : 'm/d/Y';

		}



		// restricts jquery timepicker format (based on WP time format) to ensure accurate localization

		function get_wp_time_format() {

			return ($this->parse_time_format(AEC_WP_TIME_FORMAT)) ? 'H:i' : 'h:i A';

		}



		// split datetime fields

		function split_datetime($datetime) {

			$out = array();

			array_push($out, $this->convert_date($datetime, AEC_DB_DATETIME_FORMAT, $this->get_wp_date_format()));

			array_push($out, $this->convert_date($datetime, AEC_DB_DATETIME_FORMAT, $this->get_wp_time_format()));

			return $out;

		}



		// merge date and time fields, and convert to database format

		function merge_date_time($date, $time) {

			$datetime 	= "{$date} {$time}";

			$format 	= "{$this->get_wp_date_format()} {$this->get_wp_time_format()}";

			return $this->convert_date($datetime, $format, AEC_DB_DATETIME_FORMAT);

		}



		function array_compare_order($a, $b) {

			return strtotime($a['start']) - strtotime($b['start']);

		}



		// CUSTOMIZE WORDPRESS

		// adds column field label to WordPress users page

		function add_events_column($columns) {

			$columns['calendar_events'] = __('Events', AEC_NAME);

			return $columns;

		}



		// adds column field value to WordPress users page

		function add_events_column_data($empty='', $column_name, $user_id) {

			if ($column_name == 'calendar_events') {

				return $this->db_query_events_by_user($user_id);

			}

		}



		// displays the "settings" link beside the plugin on the WordPress plugins page

		function settings_link($links, $file) {

			if ($file == plugin_basename(__FILE__)) {

				$settings = '<a href="' . get_admin_url() . 'admin.php?page=aec_calendar_options">' . __('Settings', AEC_NAME) . '</a>';

				array_unshift($links, $settings);	// make the 'Settings' link appear first

			}

			return $links;

		}



		// changes the permissions for using the calendar settings page

		function set_option_page_capability($capability) {

			return 'aec_manage_calendar';

		}



		function admin_options_initialize() {

			register_setting('aec_plugin_options', 'aec_options', array($this, 'admin_options_validate'));

		}



		function admin_options_validate($input) {

			// validation placeholder

			return $input;

		}

	}

}



register_activation_hook(__FILE__, array('ajax_event_calendar', 'install'));



if (class_exists('ajax_event_calendar')) {

	require_once AEC_PATH . 'inc/widget-contributors.php';

	require_once AEC_PATH . 'inc/widget-upcoming.php';

	$aec = new ajax_event_calendar();

}

?>