339 Zeilen
11 KiB
PHP
339 Zeilen
11 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_View
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* @subpackage Helper
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**
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* @see Zend_View_Helper_Navigation_HelperAbstract
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*/
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require_once 'Zend/View/Helper/Navigation/HelperAbstract.php';
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/**
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* Proxy helper for retrieving navigational helpers and forwarding calls
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*
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* @category Zend
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* @package Zend_View
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* @subpackage Helper
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_View_Helper_Navigation
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extends Zend_View_Helper_Navigation_HelperAbstract
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{
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/**
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* View helper namespace
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*
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* @var string
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*/
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const NS = 'Zend_View_Helper_Navigation';
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/**
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* Default proxy to use in {@link render()}
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*
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* @var string
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*/
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protected $_defaultProxy = 'menu';
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/**
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* Contains references to proxied helpers
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*
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* @var array
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*/
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protected $_helpers = array();
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/**
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* Whether container should be injected when proxying
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*
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* @var bool
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*/
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protected $_injectContainer = true;
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/**
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* Whether ACL should be injected when proxying
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*
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* @var bool
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*/
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protected $_injectAcl = true;
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/**
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* Whether translator should be injected when proxying
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*
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* @var bool
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*/
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protected $_injectTranslator = true;
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/**
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* Helper entry point
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*
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* @param Zend_Navigation_Container $container [optional] container to
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* operate on
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* @return Zend_View_Helper_Navigation fluent interface, returns
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* self
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*/
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public function navigation(Zend_Navigation_Container $container = null)
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{
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if (null !== $container) {
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$this->setContainer($container);
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}
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return $this;
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}
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/**
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* Magic overload: Proxy to other navigation helpers or the container
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*
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* Examples of usage from a view script or layout:
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* <code>
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* // proxy to Menu helper and render container:
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* echo $this->navigation()->menu();
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*
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* // proxy to Breadcrumbs helper and set indentation:
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* $this->navigation()->breadcrumbs()->setIndent(8);
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*
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* // proxy to container and find all pages with 'blog' route:
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* $blogPages = $this->navigation()->findAllByRoute('blog');
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* </code>
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*
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* @param string $method helper name or method name in
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* container
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* @param array $arguments [optional] arguments to pass
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* @return mixed returns what the proxied call returns
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* @throws Zend_View_Exception if proxying to a helper, and the
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* helper is not an instance of the
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* interface specified in
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* {@link findHelper()}
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* @throws Zend_Navigation_Exception if method does not exist in container
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*/
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public function __call($method, array $arguments = array())
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{
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// check if call should proxy to another helper
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if ($helper = $this->findHelper($method, false)) {
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return call_user_func_array(array($helper, $method), $arguments);
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}
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// default behaviour: proxy call to container
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return parent::__call($method, $arguments);
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}
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/**
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* Returns the helper matching $proxy
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*
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* The helper must implement the interface
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* {@link Zend_View_Helper_Navigation_Helper}.
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*
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* @param string $proxy helper name
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* @param bool $strict [optional] whether
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* exceptions should be
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* thrown if something goes
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* wrong. Default is true.
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* @return Zend_View_Helper_Navigation_Helper helper instance
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* @throws Zend_Loader_PluginLoader_Exception if $strict is true and
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* helper cannot be found
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* @throws Zend_View_Exception if $strict is true and
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* helper does not implement
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* the specified interface
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*/
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public function findHelper($proxy, $strict = true)
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{
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if (isset($this->_helpers[$proxy])) {
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return $this->_helpers[$proxy];
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}
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if (!$this->view->getPluginLoader('helper')->getPaths(self::NS)) {
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$this->view->addHelperPath(
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str_replace('_', '/', self::NS),
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self::NS);
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}
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if ($strict) {
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$helper = $this->view->getHelper($proxy);
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} else {
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try {
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$helper = $this->view->getHelper($proxy);
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} catch (Zend_Loader_PluginLoader_Exception $e) {
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return null;
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}
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}
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if (!$helper instanceof Zend_View_Helper_Navigation_Helper) {
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if ($strict) {
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require_once 'Zend/View/Exception.php';
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$e = new Zend_View_Exception(sprintf(
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'Proxy helper "%s" is not an instance of ' .
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'Zend_View_Helper_Navigation_Helper',
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get_class($helper)));
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$e->setView($this->view);
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throw $e;
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}
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return null;
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}
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$this->_inject($helper);
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$this->_helpers[$proxy] = $helper;
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return $helper;
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}
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/**
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* Injects container, ACL, and translator to the given $helper if this
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* helper is configured to do so
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*
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* @param Zend_View_Helper_Navigation_Helper $helper helper instance
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* @return void
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*/
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protected function _inject(Zend_View_Helper_Navigation_Helper $helper)
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{
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if ($this->getInjectContainer() && !$helper->hasContainer()) {
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$helper->setContainer($this->getContainer());
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}
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if ($this->getInjectAcl()) {
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if (!$helper->hasAcl()) {
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$helper->setAcl($this->getAcl());
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}
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if (!$helper->hasRole()) {
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$helper->setRole($this->getRole());
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}
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}
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if ($this->getInjectTranslator() && !$helper->hasTranslator()) {
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$helper->setTranslator($this->getTranslator());
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}
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}
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// Accessors:
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/**
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* Sets the default proxy to use in {@link render()}
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*
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* @param string $proxy default proxy
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* @return Zend_View_Helper_Navigation fluent interface, returns self
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*/
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public function setDefaultProxy($proxy)
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{
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$this->_defaultProxy = (string) $proxy;
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return $this;
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}
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/**
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* Returns the default proxy to use in {@link render()}
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*
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* @return string the default proxy to use in {@link render()}
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*/
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public function getDefaultProxy()
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{
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return $this->_defaultProxy;
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}
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/**
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* Sets whether container should be injected when proxying
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*
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* @param bool $injectContainer [optional] whether container should
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* be injected when proxying. Default
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* is true.
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* @return Zend_View_Helper_Navigation fluent interface, returns self
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*/
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public function setInjectContainer($injectContainer = true)
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{
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$this->_injectContainer = (bool) $injectContainer;
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return $this;
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}
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/**
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* Returns whether container should be injected when proxying
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*
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* @return bool whether container should be injected when proxying
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*/
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public function getInjectContainer()
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{
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return $this->_injectContainer;
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}
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/**
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* Sets whether ACL should be injected when proxying
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*
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* @param bool $injectAcl [optional] whether ACL should be
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* injected when proxying. Default is
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* true.
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* @return Zend_View_Helper_Navigation fluent interface, returns self
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*/
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public function setInjectAcl($injectAcl = true)
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{
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$this->_injectAcl = (bool) $injectAcl;
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return $this;
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}
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/**
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* Returns whether ACL should be injected when proxying
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*
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* @return bool whether ACL should be injected when proxying
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*/
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public function getInjectAcl()
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{
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return $this->_injectAcl;
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}
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/**
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* Sets whether translator should be injected when proxying
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*
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* @param bool $injectTranslator [optional] whether translator should
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* be injected when proxying. Default
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* is true.
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* @return Zend_View_Helper_Navigation fluent interface, returns self
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*/
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public function setInjectTranslator($injectTranslator = true)
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{
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$this->_injectTranslator = (bool) $injectTranslator;
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return $this;
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}
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/**
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* Returns whether translator should be injected when proxying
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*
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* @return bool whether translator should be injected when proxying
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*/
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public function getInjectTranslator()
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{
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return $this->_injectTranslator;
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}
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// Zend_View_Helper_Navigation_Helper:
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/**
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* Renders helper
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*
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* @param Zend_Navigation_Container $container [optional] container to
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* render. Default is to
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* render the container
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* registered in the helper.
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* @return string helper output
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* @throws Zend_Loader_PluginLoader_Exception if helper cannot be found
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* @throws Zend_View_Exception if helper doesn't implement
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* the interface specified in
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* {@link findHelper()}
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*/
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public function render(Zend_Navigation_Container $container = null)
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{
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$helper = $this->findHelper($this->getDefaultProxy());
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return $helper->render($container);
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}
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}
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