mirror of
https://github.com/silverstripe/silverstripe-cms
synced 2024-09-01 23:37:49 +02:00
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/cms/branches/2.3@70032 467b73ca-7a2a-4603-9d3b-597d59a354a9
264 lines
8.6 KiB
PHP
264 lines
8.6 KiB
PHP
<?php
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/**
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* The object manages the main CMS menu.
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* See {@link LeftAndMain::init()} for example usage.
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*
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* @package cms
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* @subpackage content
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*/
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class CMSMenu extends Object implements Iterator, i18nEntityProvider
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{
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protected static $menu_items = array();
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/**
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* Generate CMS main menu items by collecting valid
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* subclasses of {@link LeftAndMain}
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*/
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public static function populate_menu() {
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$cmsClasses = self::get_cms_classes();
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foreach($cmsClasses as $cmsClass) {
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self::add_controller($cmsClass);
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}
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return true;
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}
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/**
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* Add a LeftAndMain controller to the CMS menu.
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*
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* @param string $controllerClass The class name of the controller
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* @return The result of the operation
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* @todo A director rule is added when a controller link is added, but it won't be removed
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* when the item is removed. Functionality needed in {@link Director}.
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*/
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public static function add_controller($controllerClass) {
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// Get static bits
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$urlBase = eval("return $controllerClass::\$url_base;");
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$urlSegment = eval("return $controllerClass::\$url_segment;");
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$urlRule = eval("return $controllerClass::\$url_rule;");
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$urlPriority = eval("return $controllerClass::\$url_priority;");
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$menuPriority = eval("return $controllerClass::\$menu_priority;");
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// Don't add menu items defined the old way
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if($urlSegment === null) return;
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$link = Controller::join_links($urlBase,$urlSegment) . '/';
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// Make director rule
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if($urlRule[0] == '/') $urlRule = substr($urlRule,1);
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$rule = $link . '/' . $urlRule; // the / will combine with the / on the end of $link to make a //
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Director::addRules($urlPriority, array(
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$rule => $controllerClass
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));
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// doesn't work if called outside of a controller context (e.g. in _config.php)
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// as the locale won't be detected properly. Use {@link LeftAndMain->MainMenu()} to update
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// titles for existing menu entries
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$defaultTitle = LeftAndMain::menu_title_for_class($controllerClass);
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$menuTitle = _t("{$controllerClass}.MENUTITLE", $defaultTitle);
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// Add menu item
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return self::add_menu_item(
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$controllerClass,
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$menuTitle,
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$link,
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$controllerClass,
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$menuPriority
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);
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}
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/**
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* Add an arbitrary URL to the CMS menu.
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*
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* @param string $code A unique identifier (used to create a CSS ID and as it's key in {@link $menu_items}
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* @param string $menuTitle The link's title in the CMS menu
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* @param string $url The url of the link
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* @param integer $priority The menu priority (sorting order) of the menu item. Higher priorities will be further left.
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* @return boolean The result of the operation.
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*/
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public static function add_link($code, $menuTitle, $url, $priority = -1) {
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return self::add_menu_item($code, $menuTitle, $url, null, $priority);
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}
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/**
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* Add a navigation item to the main administration menu showing in the top bar.
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*
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* uses {@link CMSMenu::$menu_items}
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*
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* @param string $code Unique identifier for this menu item (e.g. used by {@link replace_menu_item()} and
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* {@link remove_menu_item}. Also used as a CSS-class for icon customization.
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* @param string $menuTitle Localized title showing in the menu bar
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* @param string $url A relative URL that will be linked in the menu bar.
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* @param string $controllerClass The controller class for this menu, used to check permisssions.
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* If blank, it's assumed that this is public, and always shown to users who
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* have the rights to access some other part of the admin area.
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* @return boolean Success
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*/
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public static function add_menu_item($code, $menuTitle, $url, $controllerClass = null, $priority = -1) {
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// If a class is defined, then force the use of that as a code. This helps prevent menu item duplication
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if($controllerClass) $code = $controllerClass;
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$menuItems = self::$menu_items;
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if(isset($menuItems[$code])) return false;
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return self::replace_menu_item($code, $menuTitle, $url, $controllerClass, $priority);
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}
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/**
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* Get a single menu item by its code value.
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*
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* @param string $code
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* @return array
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*/
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public static function get_menu_item($code) {
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$menuItems = self::$menu_items;
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return (isset($menuItems[$code])) ? $menuItems[$code] : false;
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}
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/**
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* Get all menu entries.
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*
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* @return array
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*/
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public static function get_menu_items() {
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return self::$menu_items;
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}
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/**
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* Get all menu items that the passed member can view.
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* Defaults to {@link Member::currentUser()}.
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*
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* @param Member $member
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* @return array
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*/
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public static function get_viewable_menu_items($member = null) {
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if(!$member && $member !== FALSE) {
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$member = Member::currentUser();
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}
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$viewableMenuItems = array();
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$allMenuItems = self::get_menu_items();
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if($allMenuItems) foreach($allMenuItems as $code => $menuItem) {
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// exclude all items which have a controller to perform permission
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// checks on
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if($menuItem->controller && !singleton($menuItem->controller)->canView($member)) continue;
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$viewableMenuItems[$code] = $menuItem;
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}
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return $viewableMenuItems;
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}
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/**
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* Removes an existing item from the menu.
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*
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* @param string $code Unique identifier for this menu item
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*/
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public static function remove_menu_item($code) {
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$menuItems = self::$menu_items;
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if(isset($menuItems[$code])) unset($menuItems[$code]);
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// replace the whole array
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self::$menu_items = $menuItems;
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}
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/**
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* Clears the entire menu
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*
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*/
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public static function clear_menu() {
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self::$menu_items = array();
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}
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/**
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* Replace a navigation item to the main administration menu showing in the top bar.
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*
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* @param string $code Unique identifier for this menu item (e.g. used by {@link replace_menu_item()} and
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* {@link remove_menu_item}. Also used as a CSS-class for icon customization.
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* @param string $menuTitle Localized title showing in the menu bar
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* @param string $url A relative URL that will be linked in the menu bar.
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* Make sure to add a matching route via {@link Director::addRules()} to this url.
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* @param string $controllerClass The controller class for this menu, used to check permisssions.
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* If blank, it's assumed that this is public, and always shown to users who
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* have the rights to access some other part of the admin area.
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* @return boolean Success
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*/
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public static function replace_menu_item($code, $menuTitle, $url, $controllerClass = null, $priority = -1) {
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$menuItems = self::$menu_items;
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$menuItems[$code] = new CMSMenuItem($menuTitle, $url, $controllerClass, $priority);
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$menuPriority = array();
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$i = 0;
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foreach($menuItems as $key => $menuItem) {
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$i++;
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// This funny litle formula ensures that the first item added with the same priority will be left-most.
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$menuPriority[$key] = $menuItem->priority*100 - $i;
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}
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array_multisort($menuPriority, SORT_DESC, $menuItems);
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self::$menu_items = $menuItems;
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return true;
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}
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/**
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* A utility funciton to retrieve subclasses of a given class that
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* are instantiable (ie, not abstract) and have a valid menu title.
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*
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* @todo A variation of this function could probably be moved to {@link ClassInfo}
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* @param string $root The root class to begin finding subclasses
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* @param boolean $recursive Look for subclasses recursively?
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* @return array Valid, unique subclasses
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*/
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public static function get_cms_classes($root = 'LeftAndMain', $recursive = true) {
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$subClasses = array_values(ClassInfo::subclassesFor($root));
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foreach($subClasses as $className) {
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if($recursive && $className != $root) {
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$subClasses = array_merge($subClasses, array_values(ClassInfo::subclassesFor($className)));
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}
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}
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$subClasses = array_unique($subClasses);
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foreach($subClasses as $key => $className) {
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// Remove abstract classes and LeftAndMain
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$classReflection = new ReflectionClass($className);
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if(!$classReflection->isInstantiable() || 'LeftAndMain' == $className) {
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unset($subClasses[$key]);
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}
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}
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return $subClasses;
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}
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// Iterator Interface Methods
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public function key() {
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return key(self::$menu_items);
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}
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public function current() {
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return current(self::$menu_items);
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}
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public function next() {
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return next(self::$menu_items);
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}
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public function rewind() {
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return reset(self::$menu_items);
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}
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public function valid() {
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return (bool)self::current();
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}
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/**
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* Provide menu titles to the i18n entity provider
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*/
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function provideI18nEntities() {
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$cmsClasses = self::get_cms_classes();
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$entities = array();
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foreach($cmsClasses as $cmsClass) {
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$defaultTitle = LeftAndMain::menu_title_for_class($cmsClass);
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$ownerModule = i18n::get_owner_module($cmsClass);
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$entities["{$cmsClass}.MENUTITLE"] = array($defaultTitle, PR_HIGH, 'Menu title', $ownerModule);
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}
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return $entities;
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}
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}
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?>
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