icingaweb2/library/Icinga/Web/Menu.php

806 lines
20 KiB
PHP

<?php
/* Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */
namespace Icinga\Web;
use RecursiveIterator;
use Icinga\Application\Config;
use Icinga\Application\Icinga;
use Icinga\Application\Logger;
use Icinga\Authentication\Auth;
use Icinga\Data\ConfigObject;
use Icinga\Exception\ConfigurationError;
use Icinga\Exception\ProgrammingError;
use Icinga\Web\Menu\MenuItemRenderer;
class Menu implements RecursiveIterator
{
/**
* The id of this menu
*
* @var string
*/
protected $id;
/**
* The title of this menu
*
* Used for sorting when priority is unset or equal to other items
*
* @var string
*/
protected $title;
/**
* The priority of this menu
*
* Used for sorting
*
* @var int
*/
protected $priority = 100;
/**
* The url of this menu
*
* @var string|null
*/
protected $url;
/**
* The path to the icon of this menu
*
* @var string
*/
protected $icon;
/**
* The sub menus of this menu
*
* @var array
*/
protected $subMenus = array();
/**
* A custom item renderer used instead of the default rendering logic
*
* @var MenuItemRenderer
*/
protected $itemRenderer = null;
/*
* Parent menu
*
* @var Menu
*/
protected $parent;
/**
* Permission a user is required to have granted to display the menu item
*
* If a permission is set, authentication is of course required.
*
* Note that only one required permission can be set yet.
*
* @var string|null
*/
protected $permission;
/**
* Create a new menu
*
* @param int $id The id of this menu
* @param ConfigObject $config The configuration for this menu
* @param Menu $parent Parent menu
*/
public function __construct($id, ConfigObject $config = null, Menu $parent = null)
{
$this->id = $id;
if ($parent !== null) {
$this->parent = $parent;
}
$this->setProperties($config);
}
/**
* Set all given properties
*
* @param array|ConfigObject $props Property list
*
* @return $this
*
* @throws ConfigurationError If a property is invalid
*/
public function setProperties($props = null)
{
if ($props !== null) {
foreach ($props as $key => $value) {
$method = 'set' . implode('', array_map('ucfirst', explode('_', strtolower($key))));
if ($key === 'renderer') {
// nested configuration is used to pass multiple arguments to the item renderer
if ($value instanceof ConfigObject) {
$args = $value;
$value = $value->get('0');
}
$value = '\\' . ltrim($value, '\\');
if (class_exists($value)) {
if (isset($args)) {
$value = new $value($args);
} else {
$value = new $value;
}
} else {
$class = '\Icinga\Web\Menu' . $value;
if (!class_exists($class)) {
throw new ConfigurationError(
sprintf('ItemRenderer with class "%s" does not exist', $class)
);
}
if (isset($args)) {
$value = new $class($args);
} else {
$value = new $class;
}
}
}
if (method_exists($this, $method)) {
$this->{$method}($value);
} else {
throw new ConfigurationError(
sprintf('Menu got invalid property "%s"', $key)
);
}
}
}
return $this;
}
/**
* Get Properties
*
* @return array
*/
public function getProperties()
{
$props = array();
$keys = array('url', 'icon', 'priority', 'title');
foreach ($keys as $key) {
$func = 'get' . ucfirst($key);
if (null !== ($val = $this->{$func}())) {
$props[$key] = $val;
}
}
return $props;
}
/**
* Whether this Menu conflicts with the given Menu object
*
* @param Menu $menu
*
* @return bool
*/
public function conflictsWith(Menu $menu)
{
if ($menu->getUrl() === null || $this->getUrl() === null) {
return false;
}
return $menu->getUrl() !== $this->getUrl();
}
/**
* Create menu from the application's menu config file plus the config files from all enabled modules
*
* @return static
*
* @deprecated THIS IS OBSOLETE. LEFT HERE FOR FUTURE USE WITH USER-SPECIFIC MODULES
*/
public static function fromConfig()
{
$menu = new static('menu');
$manager = Icinga::app()->getModuleManager();
$modules = $manager->listEnabledModules();
$menuConfigs = array(Config::app('menu'));
foreach ($modules as $moduleName) {
$moduleMenuConfig = Config::module($moduleName, 'menu');
if (! $moduleMenuConfig->isEmpty()) {
$menuConfigs[] = $moduleMenuConfig;
}
}
return $menu->loadSubMenus($menu->flattenConfigs($menuConfigs));
}
/**
* Create menu from the application's menu config plus menu entries provided by all enabled modules
*
* @return static
*/
public static function load()
{
$menu = new static('menu');
$menu->addMainMenuItems();
$auth = Auth::getInstance();
$manager = Icinga::app()->getModuleManager();
foreach ($manager->getLoadedModules() as $module) {
if ($auth->hasPermission($manager::MODULE_PERMISSION_NS . $module->getName())) {
$menu->mergeSubMenus($module->getMenuItems());
}
}
return $menu->order();
}
/**
* Add Applications Main Menu Items
*/
protected function addMainMenuItems()
{
$auth = Auth::getInstance();
if ($auth->isAuthenticated()) {
$this->add(t('Dashboard'), array(
'url' => 'dashboard',
'icon' => 'dashboard',
'priority' => 10
));
$section = $this->add(t('System'), array(
'icon' => 'services',
'priority' => 700,
'renderer' => array(
'SummaryMenuItemRenderer',
'state' => 'critical'
)
));
$section->add(t('About'), array(
'url' => 'about',
'priority' => 701
));
if (Logger::writesToFile()) {
$section->add(t('Application Log'), array(
'url' => 'list/applicationlog',
'priority' => 710
));
}
$section = $this->add(t('Configuration'), array(
'icon' => 'wrench',
'permission' => 'config/*',
'priority' => 800
));
$section->add(t('Application'), array(
'url' => 'config/general',
'permission' => 'config/application/*',
'priority' => 810
));
$section->add(t('Authentication'), array(
'url' => 'config/userbackend',
'permission' => 'config/authentication/*',
'priority' => 820
));
$section->add(t('Roles'), array(
'url' => 'role/list',
'permission' => 'config/authentication/roles/show',
'priority' => 830
));
$section->add(t('Users'), array(
'url' => 'user/list',
'permission' => 'config/authentication/users/show',
'priority' => 840
));
$section->add(t('Usergroups'), array(
'url' => 'group/list',
'permission' => 'config/authentication/groups/show',
'priority' => 850
));
$section->add(t('Modules'), array(
'url' => 'config/modules',
'permission' => 'config/modules',
'priority' => 890
));
$section = $this->add($auth->getUser()->getUsername(), array(
'icon' => 'user',
'priority' => 900
));
$section->add(t('Preferences'), array(
'url' => 'preference',
'priority' => 910
));
$section->add(t('Logout'), array(
'url' => 'authentication/logout',
'priority' => 990,
'renderer' => array(
'MenuItemRenderer',
'target' => '_self'
)
));
}
}
/**
* Set the id of this menu
*
* @param string $id The id to set for this menu
*
* @return $this
*/
public function setId($id)
{
$this->id = $id;
return $this;
}
/**
* Return the id of this menu
*
* @return string
*/
public function getId()
{
return $this->id;
}
/**
* Get our ID without invalid characters
*
* @return string the ID
*/
protected function getSafeHtmlId()
{
return preg_replace('/[^a-zA-Z0-9]/', '_', $this->getId());
}
/**
* Get a unique menu item id
*
* @return string the ID
*/
public function getUniqueId()
{
if ($this->parent === null) {
return 'menuitem-' . $this->getSafeHtmlId();
} else {
return $this->parent->getUniqueId() . '-' . $this->getSafeHtmlId();
}
}
/**
* Set the title of this menu
*
* @param string $title The title to set for this menu
*
* @return $this
*/
public function setTitle($title)
{
$this->title = $title;
return $this;
}
/**
* Return the title of this menu if set, otherwise its id
*
* @return string
*/
public function getTitle()
{
return $this->title ? $this->title : $this->id;
}
/**
* Set the priority of this menu
*
* @param int $priority The priority to set for this menu
*
* @return $this
*/
public function setPriority($priority)
{
$this->priority = (int) $priority;
return $this;
}
/**
* Return the priority of this menu
*
* @return int
*/
public function getPriority()
{
return $this->priority;
}
/**
* Set the url of this menu
*
* @param Url|string $url The url to set for this menu
*
* @return $this
*/
public function setUrl($url)
{
$this->url = $url;
return $this;
}
/**
* Return the url of this menu
*
* @return Url|null
*/
public function getUrl()
{
if ($this->url !== null && ! $this->url instanceof Url) {
$this->url = Url::fromPath($this->url);
}
return $this->url;
}
/**
* Set the path to the icon of this menu
*
* @param string $path The path to the icon for this menu
*
* @return $this
*/
public function setIcon($path)
{
$this->icon = $path;
return $this;
}
/**
* Return the path to the icon of this menu
*
* @return string
*/
public function getIcon()
{
return $this->icon;
}
/**
* Get the class that renders the current menu item
*
* @return MenuItemRenderer
*/
public function getRenderer()
{
return $this->itemRenderer;
}
/**
* Set the class that renders the current menu item
*
* @param MenuItemRenderer $renderer
*/
public function setRenderer(MenuItemRenderer $renderer)
{
$this->itemRenderer = $renderer;
}
/**
* Return whether this menu has any sub menus
*
* @return bool
*/
public function hasSubMenus()
{
return false === empty($this->subMenus);
}
/**
* Add a sub menu to this menu
*
* @param string $id The id of the menu to add
* @param ConfigObject $menuConfig The config with which to initialize the menu
*
* @return static
*/
public function addSubMenu($id, ConfigObject $menuConfig = null)
{
$subMenu = new static($id, $menuConfig, $this);
$this->subMenus[$id] = $subMenu;
return $subMenu;
}
/**
* Get the permission a user is required to have granted to display the menu item
*
* @return string|null
*/
public function getPermission()
{
return $this->permission;
}
/**
* Get parent menu
*
* @return \Icinga\Web\Menu
*/
public function getParent()
{
return $this->parent;
}
/**
* Get submenus
*
* @return array
*/
public function getSubMenus()
{
return $this->subMenus;
}
/**
* Set permission a user is required to have granted to display the menu item
*
* If a permission is set, authentication is of course required.
*
* @param string $permission
*
* @return $this
*/
public function setPermission($permission)
{
$this->permission = (string) $permission;
return $this;
}
/**
* Merge Sub Menus
*
* @param array $submenus
*
* @return $this
*/
public function mergeSubMenus(array $submenus)
{
foreach ($submenus as $menu) {
$this->mergeSubMenu($menu);
}
return $this;
}
/**
* Merge Sub Menu
*
* @param Menu $menu
*
* @return static
*/
public function mergeSubMenu(Menu $menu)
{
$name = $menu->getId();
if (array_key_exists($name, $this->subMenus)) {
/** @var $current Menu */
$current = $this->subMenus[$name];
if ($current->conflictsWith($menu)) {
while (array_key_exists($name, $this->subMenus)) {
if (preg_match('/_(\d+)$/', $name, $m)) {
$name = preg_replace('/_\d+$/', $m[1]++, $name);
} else {
$name .= '_2';
}
}
$menu->setId($name);
$this->subMenus[$name] = $menu;
} else {
$current->setProperties($menu->getProperties());
foreach ($menu->subMenus as $child) {
$current->mergeSubMenu($child);
}
}
} else {
$this->subMenus[$name] = $menu;
}
return $this->subMenus[$name];
}
/**
* Add a Menu
*
* @param $name
* @param array $config
*
* @return static
*/
public function add($name, $config = array())
{
return $this->addSubMenu($name, new ConfigObject($config));
}
/**
* Return whether a sub menu with the given id exists
*
* @param string $id The id of the sub menu
*
* @return bool
*/
public function hasSubMenu($id)
{
return array_key_exists($id, $this->subMenus);
}
/**
* Get sub menu by its id
*
* @param string $id The id of the sub menu
*
* @return static The found sub menu
*
* @throws ProgrammingError In case there is no sub menu with the given id to be found
*/
public function getSubMenu($id)
{
if (false === $this->hasSubMenu($id)) {
throw new ProgrammingError(
'Tried to get invalid sub menu "%s"',
$id
);
}
return $this->subMenus[$id];
}
/**
* Order this menu's sub menus based on their priority
*
* @return $this
*/
public function order()
{
uasort($this->subMenus, array($this, 'cmpSubMenus'));
foreach ($this->subMenus as $subMenu) {
if ($subMenu->hasSubMenus()) {
$subMenu->order();
}
}
return $this;
}
/**
* Compare sub menus based on priority and title
*
* @param Menu $a
* @param Menu $b
*
* @return int
*/
protected function cmpSubMenus($a, $b)
{
if ($a->priority == $b->priority) {
return $a->getTitle() > $b->getTitle() ? 1 : (
$a->getTitle() < $b->getTitle() ? -1 : 0
);
}
return $a->priority > $b->priority ? 1 : -1;
}
/**
* Flatten configs
*
* @param array $configs An two dimensional array of menu configurations
*
* @return array The flattened config, as key-value array
*/
protected function flattenConfigs(array $configs)
{
$flattened = array();
foreach ($configs as $menuConfig) {
foreach ($menuConfig as $section => $itemConfig) {
while (array_key_exists($section, $flattened)) {
$section .= '_dup';
}
$flattened[$section] = $itemConfig;
}
}
return $flattened;
}
/**
* Load the sub menus
*
* @param array $menus The menus to load, as key-value array
*
* @return $this
*/
protected function loadSubMenus(array $menus)
{
foreach ($menus as $menuId => $menuConfig) {
$this->addSubMenu($menuId, $menuConfig);
}
return $this;
}
/**
* Check whether the current menu node has any sub menus
*
* @return bool
*/
public function hasChildren()
{
$current = $this->current();
if (false !== $current) {
return $current->hasSubMenus();
}
return false;
}
/**
* Return a iterator for the current menu node
*
* @return RecursiveIterator
*/
public function getChildren()
{
return $this->current();
}
/**
* Rewind the iterator to its first menu node
*/
public function rewind()
{
reset($this->subMenus);
}
/**
* Return whether the iterator position is valid
*
* @return bool
*/
public function valid()
{
return $this->key() !== null;
}
/**
* Return the current menu node
*
* @return static
*/
public function current()
{
return current($this->subMenus);
}
/**
* Return the id of the current menu node
*
* @return string
*/
public function key()
{
return key($this->subMenus);
}
/**
* Move the iterator to the next menu node
*/
public function next()
{
next($this->subMenus);
}
/**
* PHP 5.3 GC should not leak, but just to be on the safe side...
*/
public function __destruct()
{
$this->parent = null;
}
}