start.php

<?php

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

function socialwiki_init() {
	// add a site navigation item
	$item = new ElggMenuItem('wikis', 'Wikis', 'wiki/all');
	elgg_register_menu_item('site', $item);
	
	//registering entiities
	elgg_register_entity_type("object","wiki");
	elgg_register_entity_type("object","wikiactivity");
	elgg_register_entity_type("object","wikiuser");
	
	//registering actions
	elgg_register_action("wiki/save", dirname(__FILE__) . "/actions/wiki/save.php");
	elgg_register_action("wiki/delete", dirname(__FILE__) . "/actions/wiki/delete.php");
	elgg_register_action("wikiuser/save", dirname(__FILE__) . "/actions/wikiuser/save.php");
	elgg_register_action("wikiuser/delete", dirname(__FILE__) . "/actions/wikiuser/delete.php");
	
	//registering libs
	elgg_register_library('elgg:socialwiki', elgg_get_plugins_path() . 'socialwiki/lib/socialwiki.php');
	elgg_register_library('elgg:wikimate', elgg_get_plugins_path() . 'socialwiki/lib/wikimate/globals.php');
	
	elgg_load_library("elgg:socialwiki");
	// init cron
	elgg_register_plugin_hook_handler('permissions_check', 'object', 'cron_permissions_check');
	elgg_register_plugin_hook_handler('cron', 'minute', 'sw_update_all_wikis');
	
	
	//registering page handlers
	elgg_register_page_handler('wiki', 'wiki_page_handler');
	elgg_register_page_handler("wikiuser", "wikiuser_page_handler");
	elgg_register_page_handler('wikiicon', 'wikis_icon_handler');
	
	//registering url handlers
	elgg_register_entity_url_handler("object", "wiki", "wiki_url_handler");
	
	// entity menu
	elgg_register_plugin_hook_handler('register', 'menu:entity', 'wiki_entity_menu_setup');
	elgg_register_plugin_hook_handler('register', 'menu:entity', 'wikiuser_entity_menu_setup');
	elgg_register_plugin_hook_handler('register', 'menu:river', 'wikiactivity_river_menu_setup');
	
	elgg_register_plugin_hook_handler('entity:icon:url', 'object', 'wikis_icon_url_override');
	
	elgg_register_css('diff', 'mod/socialwiki/views/default/diff.css');
	elgg_load_css("diff");
	elgg_register_js("sw:diff", "mod/socialwiki/js/js.js");
	elgg_load_js("sw:diff");
	
	//wiki thumbnail
	elgg_register_plugin_hook_handler('entity:icon:url', 'object', 'wikis_icon_url_override');	
	//elgg_register_event_handler('pagesetup', 'system', 'wikis_setup_sidebar_menus');	
	
}
 
 
function wiki_page_handler($segments) {

	switch($segments[0]) {
		case 'social_browser':
			include (dirname(__FILE__) . '/pages/wiki/social_browser.php');			
			break;
		case 'add':
			include (dirname(__FILE__) . '/pages/wiki/add.php');
			break;
		case "edit":
			gatekeeper();
			set_input('wiki_guid', $segments[1]);		
			include (dirname(__FILE__) . '/pages/wiki/edit.php');
			break;
		case 'all':
			include (dirname(__FILE__) . '/pages/wiki/all.php');				
			break;
		case 'recentchanges':
			set_input('context',$segments[2]);
			set_input('wiki_guid', $segments[1]);
			include (dirname(__FILE__) . '/pages/wiki/recentchanges.php');
			break;
		case "view":
			set_input('wiki_guid', $segments[1]);
			if (isset($segments[2])) set_input("wiki_page", $segments[2]);
			else set_input("wiki_page", "SETI@Home");
			#FIXME: "replace Main Page" with the real main page name
			include (dirname(__FILE__) . '/pages/wiki/view.php');	
			break;			
	}
	
	
}

function wikiuser_page_handler($segments) {
	
		
	switch($segments[0]) {
			case 'add':
				gatekeeper();	
				set_input('wiki_id', $segments[2]);	
				include (dirname(__FILE__) . '/pages/wikiuser/add.php');
			break;
				break;
			case "edit":
				gatekeeper();
				set_input('wikiuser_guid', $segments[1]);		
				include (dirname(__FILE__) . '/pages/wikiuser/add.php');
			break;
			case 'all':
			default:
				include (dirname(__FILE__) . '/pages/wikiuser/all.php');
			break;
			
	}
	

}

/**
 * Add particular blog links/info to wiki menu
 */
function wiki_entity_menu_setup($hook, $type, $return, $params) {
	if (elgg_in_context('widgets')) {
		return $return;
	}

	$entity = $params['entity'];
	$handler = elgg_extract('handler', $params, false);
	if ($handler != 'wiki') {
		return $return;
	}

/*	$options = array(
		'name' => 'permalink',
		'text' => 'Permalink',
		'href' => $entity->getURL(),
		'priority' => 150,
	);
	array_push($return, ElggMenuItem::factory($options));*/
	
	$options = array(
		'name' => 'url',
		'text' => 'URL',
		'href' => $entity->wiki_url,
		'priority' => 150,
	);
	array_push($return, ElggMenuItem::factory($options));	
	
/*	$options = array(
		'name' => 'recentchanges',
		'text' => 'Recent changes',
		'href' => elgg_normalize_url('activity/all?type=object&subtype=wikiactivity'),
		'priority' => 150,
	);
	array_push($return, ElggMenuItem::factory($options));	*/
	

	return $return;
}


/**
 * Add particular blog links/info to wikiuser menu
 */
function wikiuser_entity_menu_setup($hook, $type, $return, $params) {
	if (elgg_in_context('widgets')) {
		return $return;
	}

	$entity = $params['entity'];
	$handler = elgg_extract('handler', $params, false);
	if ($handler != 'wikiuser') {
		return $return;
	}
	
	foreach ($return as $index => $item){
		if (in_array($item->getName(), array( 'likes'))) {
			unset($return[$index]);		
	}
	
	return $return;
}
}

/**
 * Add particular blog links/info to wikiuser menu
 */
function wikiactivity_river_menu_setup($hook, $type, $return, $params) {
	
	$item = $params['item'];
	$object = $item->getObjectEntity();
	
	if (! elgg_instanceof($object,'object','wikiactivity')){
		return $return;
	}
	
	$options = array(
		'name' => 'diff',
		'text' => elgg_echo("wikiactivity:show:diff"),
		'href' =>  "#toggleDiff",
		'priority' => 150,
		'data-nextname'=> elgg_echo("wikiactivity:hide:diff")
	);
	
	array_push($return, ElggMenuItem::factory($options));
	
	return $return;
}



/**
* Format and return the URL for wikis.
*
* @param ElggObject $entity Blog object
* @return string URL of blog.
*/
function wiki_url_handler($entity) {
	if (!$entity->getOwnerEntity()) {
		// default to a standard view if no owner.
		return FALSE;
	}

	$friendly_title = elgg_get_friendly_title($entity->title);
	
	if (elgg_is_active_plugin('elgg-facebook_theme'))
		return "wiki/profile/{$entity->guid}/$friendly_title";
	else
		return "wiki/view/{$entity->guid}/$friendly_title";
}

/**
* Handle wiki icons.
*
* @param unknown_type $page
*/
function wikis_icon_handler($page) {

	// The username should be the file we're getting
	if (isset($page[0])) {
		set_input('wiki_guid', $page[0]);
	}
	if (isset($page[1])) {
		set_input('size', $page[1]);
	}
	// Include the standard profile index
	$plugin_dir = elgg_get_plugins_path();
	include("$plugin_dir/socialwiki/icon.php");
}
/**
* Override the default entity icon for wikis
*
* @return string Relative URL
*/

function wikis_icon_url_override($hook, $type, $returnvalue, $params) {
	$wiki = $params['entity'];
	$size = $params['size'];

	if (isset($wiki->icontime)) {
		// return thumbnail
		$icontime = $wiki->icontime;
		return "wikiicon/$wiki->guid/$size/$icontime.jpg";
	}

	return $returnvalue;
}

/**
 * Configure the groups sidebar menu. Triggered on page setup
 *
 */
function wikis_setup_sidebar_menus() {

	// Get the page owner entity
	$page_owner = elgg_get_page_owner_entity();

	$owner_guid = elgg_get_logged_in_user_guid();
	$context = elgg_get_context();
	if($context == 'wiki' || $context == 'wikiuser') {
		elgg_register_menu_item('page', array(
				'name' => 'wiki:all',
				'text' => elgg_echo('wiki:all'),
				'href' => 'wiki/all',
			));

			$user = elgg_get_logged_in_user_entity();
			if ($user) {				
				$url = "wikiuser";
				$item = new ElggMenuItem('wikiuser:my', elgg_echo('wikiuser:my'), $url);
				elgg_register_menu_item('page', $item);				
			}			
	}				
	
}

function cron_permissions_check($hook_name, $entity_type, $return_value, $parameters) {
	if	(!(	elgg_instanceof($parameters['entity'],'object','wiki') 
		 || elgg_instanceof($parameters['entity'],'object','wikiactivity')
		))
		return $return_value;
	if (elgg_get_context() == "cron_wiki_update"){
		return true;
	}
	else{
		return $return_value;
	}
}
?>