Файл: framework/admin/code/CMSMenu.php
Строк: 535
<?php
/**
* The object manages the main CMS menu. See {@link LeftAndMain::init()} for
* example usage.
*
* The menu will be automatically populated with menu items for subclasses of
* {@link LeftAndMain}. That is, for each class in the CMS that creates an
* administration panel, a CMS menu item will be created. The default
* configuration will also include a 'help' link to the SilverStripe user
* documentation.
*
* Additional CMSMenu items can be added through {@link LeftAndMainExtension::init()}
* extensions added to {@link LeftAndMain}.
*
* @package framework
* @subpackage admin
*/
class CMSMenu extends Object implements IteratorAggregate, i18nEntityProvider {
/**
* An array of changes to be made to the menu items, in the order that the changes should be
* applied. Each item is a map in one of the two forms:
* - array('type' => 'add', 'item' => new CMSMenuItem(...) )
* - array('type' => 'remove', 'code' => 'codename' )
*/
protected static $menu_item_changes = array();
/**
* Set to true if clear_menu() is called, to indicate that the default menu shouldn't be
* included
*/
protected static $menu_is_cleared = false;
/**
* Generate CMS main menu items by collecting valid
* subclasses of {@link LeftAndMain}
*/
public static function populate_menu() {
self::$menu_is_cleared = false;
}
/**
* Add a LeftAndMain controller to the CMS menu.
*
* @param string $controllerClass The class name of the controller
* @return The result of the operation
* @todo A director rule is added when a controller link is added, but it won't be removed
* when the item is removed. Functionality needed in {@link Director}.
*/
public static function add_controller($controllerClass) {
if($menuItem = self::menuitem_for_controller($controllerClass)) {
self::add_menu_item_obj($controllerClass, $menuItem);
}
}
/**
* Return a CMSMenuItem to add the given controller to the CMSMenu
*/
protected static function menuitem_for_controller($controllerClass) {
$urlBase = Config::inst()->get($controllerClass, 'url_base', Config::FIRST_SET);
$urlSegment = Config::inst()->get($controllerClass, 'url_segment', Config::FIRST_SET);
$menuPriority = Config::inst()->get($controllerClass, 'menu_priority', Config::FIRST_SET);
// Don't add menu items defined the old way
if($urlSegment === null && $controllerClass != "CMSMain") return;
$link = Controller::join_links($urlBase, $urlSegment) . '/';
// doesn't work if called outside of a controller context (e.g. in _config.php)
// as the locale won't be detected properly. Use {@link LeftAndMain->MainMenu()} to update
// titles for existing menu entries
$defaultTitle = LeftAndMain::menu_title_for_class($controllerClass);
$menuTitle = _t("{$controllerClass}.MENUTITLE", $defaultTitle);
return new CMSMenuItem($menuTitle, $link, $controllerClass, $menuPriority);
}
/**
* Add an arbitrary URL to the CMS menu.
*
* @param string $code A unique identifier (used to create a CSS ID and its key in {@link $menu_items})
* @param string $menuTitle The link's title in the CMS menu
* @param string $url The url of the link
* @param integer $priority The menu priority (sorting order) of the menu item. Higher priorities will be further
* left.
* @param array $attributes an array of attributes to include on the link.
*
* @return boolean The result of the operation.
*/
public static function add_link($code, $menuTitle, $url, $priority = -1, $attributes = null) {
return self::add_menu_item($code, $menuTitle, $url, null, $priority, $attributes);
}
/**
* Add a navigation item to the main administration menu showing in the top bar.
*
* uses {@link CMSMenu::$menu_items}
*
* @param string $code Unique identifier for this menu item (e.g. used by {@link replace_menu_item()} and
* {@link remove_menu_item}. Also used as a CSS-class for icon customization.
* @param string $menuTitle Localized title showing in the menu bar
* @param string $url A relative URL that will be linked in the menu bar.
* @param string $controllerClass The controller class for this menu, used to check permisssions.
* If blank, it's assumed that this is public, and always shown to users who
* have the rights to access some other part of the admin area.
* @param array $attributes an array of attributes to include on the link.
*
* @return boolean Success
*/
public static function add_menu_item($code, $menuTitle, $url, $controllerClass = null, $priority = -1,
$attributes = null) {
// If a class is defined, then force the use of that as a code. This helps prevent menu item duplication
if($controllerClass) {
$code = $controllerClass;
}
return self::replace_menu_item($code, $menuTitle, $url, $controllerClass, $priority, $attributes);
}
/**
* Get a single menu item by its code value.
*
* @param string $code
* @return array
*/
public static function get_menu_item($code) {
$menuItems = self::get_menu_items();
return (isset($menuItems[$code])) ? $menuItems[$code] : false;
}
/**
* Get all menu entries.
*
* @return array
*/
public static function get_menu_items() {
$menuItems = array();
// Set up default menu items
if(!self::$menu_is_cleared) {
$cmsClasses = self::get_cms_classes();
foreach($cmsClasses as $cmsClass) {
$menuItem = self::menuitem_for_controller($cmsClass);
if($menuItem) $menuItems[Convert::raw2htmlname(str_replace('\', '-', $cmsClass))] = $menuItem;
}
}
// Apply changes
foreach(self::$menu_item_changes as $change) {
switch($change['type']) {
case 'add':
$menuItems[$change['code']] = $change['item'];
break;
case 'remove':
unset($menuItems[$change['code']]);
break;
default:
user_error("Bad menu item change type {$change[type]}", E_USER_WARNING);
}
}
// Sort menu items according to priority, then title asc
$menuPriority = array();
$menuTitle = array();
foreach($menuItems as $key => $menuItem) {
$menuPriority[$key] = is_numeric($menuItem->priority) ? $menuItem->priority : 0;
$menuTitle[$key] = $menuItem->title;
}
array_multisort($menuPriority, SORT_DESC, $menuTitle, SORT_ASC, $menuItems);
return $menuItems;
}
/**
* Get all menu items that the passed member can view.
* Defaults to {@link Member::currentUser()}.
*
* @param Member $member
* @return array
*/
public static function get_viewable_menu_items($member = null) {
if(!$member && $member !== FALSE) {
$member = Member::currentUser();
}
$viewableMenuItems = array();
$allMenuItems = self::get_menu_items();
if($allMenuItems) foreach($allMenuItems as $code => $menuItem) {
// exclude all items which have a controller to perform permission
// checks on
if($menuItem->controller) {
$controllerObj = singleton($menuItem->controller);
if(Controller::has_curr()) {
// Necessary for canView() to have request data available,
// e.g. to check permissions against LeftAndMain->currentPage()
$controllerObj->setRequest(Controller::curr()->getRequest());
if(!$controllerObj->canView($member)) continue;
}
}
$viewableMenuItems[$code] = $menuItem;
}
return $viewableMenuItems;
}
/**
* Removes an existing item from the menu.
*
* @param string $code Unique identifier for this menu item
*/
public static function remove_menu_item($code) {
self::$menu_item_changes[] = array('type' => 'remove', 'code' => $code);
}
/**
* Clears the entire menu
*/
public static function clear_menu() {
self::$menu_item_changes = array();
self::$menu_is_cleared = true;
}
/**
* Replace a navigation item to the main administration menu showing in the top bar.
*
* @param string $code Unique identifier for this menu item (e.g. used by {@link replace_menu_item()} and
* {@link remove_menu_item}. Also used as a CSS-class for icon customization.
* @param string $menuTitle Localized title showing in the menu bar
* @param string $url A relative URL that will be linked in the menu bar.
* Make sure to add a matching route via {@link Director::$rules} to this url.
* @param string $controllerClass The controller class for this menu, used to check permisssions.
* If blank, it's assumed that this is public, and always shown to users who
* have the rights to access some other part of the admin area.
* @param array $attributes an array of attributes to include on the link.
*
* @return boolean Success
*/
public static function replace_menu_item($code, $menuTitle, $url, $controllerClass = null, $priority = -1,
$attributes = null) {
$item = new CMSMenuItem($menuTitle, $url, $controllerClass, $priority);
if($attributes) {
$item->setAttributes($attributes);
}
self::$menu_item_changes[] = array(
'type' => 'add',
'code' => $code,
'item' => $item,
);
}
/**
* Add a previously built menu item object to the menu
*/
protected static function add_menu_item_obj($code, $cmsMenuItem) {
self::$menu_item_changes[] = array(
'type' => 'add',
'code' => $code,
'item' => $cmsMenuItem,
);
}
/**
* A utility funciton to retrieve subclasses of a given class that
* are instantiable (ie, not abstract) and have a valid menu title.
*
* @todo A variation of this function could probably be moved to {@link ClassInfo}
* @param string $root The root class to begin finding subclasses
* @param boolean $recursive Look for subclasses recursively?
* @return array Valid, unique subclasses
*/
public static function get_cms_classes($root = 'LeftAndMain', $recursive = true) {
$subClasses = array_values(ClassInfo::subclassesFor($root));
foreach($subClasses as $className) {
if($recursive && $className != $root) {
$subClasses = array_merge($subClasses, array_values(ClassInfo::subclassesFor($className)));
}
}
$subClasses = array_unique($subClasses);
foreach($subClasses as $key => $className) {
// Remove abstract classes and LeftAndMain
if('LeftAndMain' == $className || ClassInfo::classImplements($className, 'TestOnly')) {
unset($subClasses[$key]);
} else {
// Separate conditional to avoid autoloading the class
$classReflection = new ReflectionClass($className);
if(!$classReflection->isInstantiable()) unset($subClasses[$key]);
}
}
return $subClasses;
}
/**
* IteratorAggregate Interface Method. Iterates over the menu items.
*/
public function getIterator() {
return new ArrayIterator(self::get_menu_items());
}
/**
* Provide menu titles to the i18n entity provider
*/
public function provideI18nEntities() {
$cmsClasses = self::get_cms_classes();
$entities = array();
foreach($cmsClasses as $cmsClass) {
$defaultTitle = LeftAndMain::menu_title_for_class($cmsClass);
$ownerModule = i18n::get_owner_module($cmsClass);
$entities["{$cmsClass}.MENUTITLE"] = array($defaultTitle, 'Menu title', $ownerModule);
}
return $entities;
}
}