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msd2/tracking/piwik/libs/HTML/QuickForm2/Renderer/Proxy.php
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msd2/tracking/piwik/libs/HTML/QuickForm2/Renderer/Proxy.php
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<?php
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/**
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* Proxy class for HTML_QuickForm2 renderers and their plugins
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*
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* PHP version 5
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*
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* LICENSE:
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*
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* Copyright (c) 2006-2010, Alexey Borzov <avb@php.net>,
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* Bertrand Mansion <golgote@mamasam.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * The names of the authors may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @category HTML
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* @package HTML_QuickForm2
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* @author Alexey Borzov <avb@php.net>
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* @author Bertrand Mansion <golgote@mamasam.com>
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* @license http://opensource.org/licenses/bsd-license.php New BSD License
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* @version SVN: $Id: Proxy.php 299706 2010-05-24 18:32:37Z avb $
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* @link http://pear.php.net/package/HTML_QuickForm2
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*/
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/**
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* Abstract base class for QuickForm2 renderers
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*/
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// require_once 'HTML/QuickForm2/Renderer.php';
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/**
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* Proxy class for HTML_QuickForm2 renderers and their plugins
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*
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* This class serves two purposes:
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* <ol>
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* <li>Aggregates renderer and its plugins. From user's point of view
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* renderer plugins simply add new methods to renderer instances.</li>
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* <li>Restricts access to renderer properties and methods. Those are defined
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* as 'public' to allow easy access from plugins, but only methods
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* with names explicitly returned by Renderer::exportMethods() are
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* available to the outside world.</li>
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* </ol>
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*
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* @category HTML
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* @package HTML_QuickForm2
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* @author Alexey Borzov <avb@php.net>
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* @author Bertrand Mansion <golgote@mamasam.com>
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* @version Release: @package_version@
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*/
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class HTML_QuickForm2_Renderer_Proxy extends HTML_QuickForm2_Renderer
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{
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/**
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* Renderer instance
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* @var HTML_QuickForm2_Renderer
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*/
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private $_renderer;
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/**
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* Additional renderer methods to proxy via __call(), as returned by exportMethods()
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* @var array
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*/
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private $_rendererMethods = array();
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/**
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* Reference to a list of registered renderer plugins for that renderer type
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* @var array
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*/
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private $_pluginClasses;
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/**
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* Plugins for this renderer
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* @var array
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*/
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private $_plugins = array();
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/**
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* Plugin methods to call via __call() magic method
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*
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* Array has the form ('lowercase method name' => 'index in _plugins array')
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*
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* @var array
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*/
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private $_pluginMethods = array();
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/**
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* Constructor, sets proxied renderer and its plugins
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*
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* @param HTML_QuickForm2_Renderer Renderer instance to proxy
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* @param array Plugins registered for that renderer type
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*/
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protected function __construct(HTML_QuickForm2_Renderer $renderer, array &$pluginClasses)
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{
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foreach ($renderer->exportMethods() as $method) {
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$this->_rendererMethods[strtolower($method)] = true;
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}
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$this->_renderer = $renderer;
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$this->_pluginClasses = &$pluginClasses;
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}
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/**
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* Magic function; call an imported method of a renderer or its plugin
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*
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* @param string method name
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* @param array method arguments
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* @return mixed
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*/
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public function __call($name, $arguments)
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{
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$lower = strtolower($name);
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if (isset($this->_rendererMethods[$lower])) {
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// support fluent interfaces
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$ret = call_user_func_array(array($this->_renderer, $name), $arguments);
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return $ret === $this->_renderer? $this: $ret;
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}
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// any additional plugins since last __call()?
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for ($i = count($this->_plugins); $i < count($this->_pluginClasses); $i++) {
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list($className, $includeFile) = $this->_pluginClasses[$i];
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if (!class_exists($className)) {
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HTML_QuickForm2_Loader::loadClass($className, $includeFile);
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}
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$this->addPlugin($i, new $className);
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}
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if (isset($this->_pluginMethods[$lower])) {
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return call_user_func_array(
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array($this->_plugins[$this->_pluginMethods[$lower]], $name),
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$arguments
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);
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}
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trigger_error("Fatal error: Call to undefined method " .
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get_class($this->_renderer) . "::" . $name . "()", E_USER_ERROR);
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}
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/**
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* Adds a plugin for the current renderer instance
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*
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* Plugin's methods are imported and can be later called as this object's own
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*
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* @param HTML_QuickForm2_Renderer_Plugin a plugin instance
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* @throws HTML_QuickForm2_InvalidArgumentException if a plugin has already
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* imported name
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*/
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protected function addPlugin($index, HTML_QuickForm2_Renderer_Plugin $plugin)
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{
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$methods = array();
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$reflection = new ReflectionObject($plugin);
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foreach ($reflection->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
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$lower = strtolower($method->getName());
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if ('HTML_QuickForm2_Renderer_Plugin' == $method->getDeclaringClass()->getName()) {
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continue;
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} elseif (isset($this->_rendererMethods[$lower])
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|| isset($this->_pluginMethods[$lower])
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) {
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throw new HTML_QuickForm2_InvalidArgumentException(
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'Duplicate method name: name ' . $method->getName() . ' in plugin ' .
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get_class($plugin) . ' already taken by ' .
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(isset($this->_rendererMethods[$lower])?
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get_class($this->_renderer):
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get_class($this->_plugins[$this->_pluginMethods[$lower]])
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)
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);
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}
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$methods[$lower] = $index;
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}
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$plugin->setRenderer($this->_renderer);
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$this->_plugins[$index] = $plugin;
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$this->_pluginMethods += $methods;
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}
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/**#@+
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* Proxies for methods defined in {@link HTML_QuickForm2_Renderer}
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*/
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public function setOption($nameOrOptions, $value = null)
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{
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$this->_renderer->setOption($nameOrOptions, $value);
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return $this;
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}
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public function getOption($name = null)
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{
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return $this->_renderer->getOption($name);
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}
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public function getJavascriptBuilder()
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{
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return $this->_renderer->getJavascriptBuilder();
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}
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public function setJavascriptBuilder(HTML_QuickForm2_JavascriptBuilder $builder = null)
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{
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$this->_renderer->setJavascriptBuilder($builder);
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return $this;
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}
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public function renderElement(HTML_QuickForm2_Node $element)
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{
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$this->_renderer->renderElement($element);
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}
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public function renderHidden(HTML_QuickForm2_Node $element)
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{
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$this->_renderer->renderHidden($element);
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}
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public function startForm(HTML_QuickForm2_Node $form)
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{
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$this->_renderer->startForm($form);
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}
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public function finishForm(HTML_QuickForm2_Node $form)
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{
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$this->_renderer->finishForm($form);
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}
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public function startContainer(HTML_QuickForm2_Node $container)
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{
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$this->_renderer->startContainer($container);
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}
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public function finishContainer(HTML_QuickForm2_Node $container)
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{
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$this->_renderer->finishContainer($container);
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}
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public function startGroup(HTML_QuickForm2_Node $group)
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{
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$this->_renderer->startGroup($group);
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}
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public function finishGroup(HTML_QuickForm2_Node $group)
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{
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$this->_renderer->finishGroup($group);
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}
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/**#@-*/
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public function __toString()
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{
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if (method_exists($this->_renderer, '__toString')) {
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return $this->_renderer->__toString();
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}
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trigger_error("Fatal error: Object of class " . get_class($this->_renderer) .
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" could not be converted to string", E_USER_ERROR);
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}
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}
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?>
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