start.php

<?php

/**
 * Content debugger plugin
 *
 * @package content_debugger
 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
 * @author Andras Szepeshazi
 * @copyright Andras Szepeshazi
 * @link http://wamped.org
 */

// Global variable to hold profiling info while rendering views
$content_debugger_timestamps = new stdClass();

/**
 * Content debugger initialization
 */
function content_debugger_init() {

	if (elgg_is_admin_logged_in()) {

		elgg_register_page_handler('content_debugger', 'content_debugger_page_handler');

		$base_name = basename(dirname(__FILE__));
		$path = elgg_get_plugins_path() . $base_name;
		elgg_register_library('content_debugger', $path.'/lib/content_debugger/content_debugger.php');
		elgg_load_library('content_debugger');

		elgg_extend_view('css/elgg', 'content_debugger/css');
		elgg_extend_view('css/admin', 'content_debugger/css');

		elgg_register_js('poshytips', "mod/$base_name/vendors/poshytip-1.0/src/jquery.poshytip.js");

		$magicmarker_path = elgg_get_simplecache_url('js', 'content_debugger/magicmarker');
		elgg_register_simplecache_view('js/content_debugger/magicmarker');
		elgg_register_js('content_debugger.magicmarker', $magicmarker_path);

		$content_debugger_path = elgg_get_simplecache_url('js', 'content_debugger/content_debugger');
		elgg_register_simplecache_view('js/content_debugger/content_debugger');
		elgg_register_js('content_debugger.content_debugger', $content_debugger_path);

		$ui = content_debugger_get_ui_type();
		if ($_SESSION['content_debugger'][$ui] === 'enabled') {
			elgg_load_js('poshytips');
			elgg_load_js('content_debugger.magicmarker');
			elgg_load_js('content_debugger.content_debugger');

			elgg_register_event_handler('pagesetup', 'system', 'content_debugger_profiler_start');
			elgg_register_plugin_hook_handler('view', 'all', 'content_debugger_view_hook', 1000);
		}

		elgg_register_event_handler('pagesetup', 'system', 'content_debugger_setup_menu');
	}

}

function content_debugger_setup_menu() {

	if (elgg_in_context('admin')) {

		// Register content debugger toggle menu item in developer section for backend
		$admin_status = 'enabled';
		if (!isset($_SESSION['content_debugger']['admin']) || $_SESSION['content_debugger']['admin'] == 'disabled') {
			$admin_status = 'disabled';
		}

		if (!elgg_is_menu_item_registered('page', 'develop_tools')) {
			elgg_register_admin_menu_item('develop', 'develop_tools');
		}
		elgg_register_menu_item('page', array(
			'name' => 'content_debugger',
			'href' => 'content_debugger/toggle?context=admin',
			'text' => elgg_echo("content_debugger:toggle:$admin_status"),
			'section' => 'develop',
			'parent_name' => 'develop_tools'
		));

	} else {

		// Register content debugger toggle menu item in topbar menu for frontend
		$menu_icon_class = "elgg-icon elgg-icon-info";
		if (isset($_SESSION['content_debugger']['frontend']) && $_SESSION['content_debugger']['frontend'] === 'enabled') {
			$menu_icon_class .= '-active';
		}
		elgg_register_menu_item('topbar', array(
			'name' => 'content_debugger',
			'href' => 'content_debugger/toggle',
			'text' => "<span class='$menu_icon_class'></span>",
			'priority' => 90,
			'title' => elgg_echo('content_debugger:toggle'),
			'section' => 'alt'
		));
	}

}

/**
 * Content debugger page handler
 *
 * @param array $page Array of page elements, forwarded by the page handling mechanism
 */
function content_debugger_page_handler($page) {
	if (isset($page[0]) && !empty($page[0])) {
		switch ($page[0]) {
		case 'toggle':
			if (get_input('context', null) === 'admin') {
				elgg_set_context('admin');
			}
			$ui = content_debugger_get_ui_type();
			if (!isset($_SESSION['content_debugger'][$ui]) || $_SESSION['content_debugger'][$ui] == 'disabled') {
				$_SESSION['content_debugger'][$ui] = 'enabled';
			} else {
				$_SESSION['content_debugger'][$ui] = 'disabled';
			}
			forward($_SERVER['HTTP_REFERER']);
			break;
		}
	}
}

elgg_register_event_handler('init', 'system', 'content_debugger_init');