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<?php

/**

 * Methods for displaying presentation data in the view.

 *

 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)

 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)

 *

 * Licensed under The MIT License

 * For full copyright and license information, please see the LICENSE.txt

 * Redistributions of files must retain the above copyright notice.

 *

 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)

 * @link          http://cakephp.org CakePHP(tm) Project

 * @package       Cake.View

 * @since         CakePHP(tm) v 0.10.0.1076

 * @license       http://www.opensource.org/licenses/mit-license.php MIT License

 */

App::uses('HelperCollection', 'View');

App::uses('AppHelper', 'View/Helper');

App::uses('Router', 'Routing');

App::uses('ViewBlock', 'View');

App::uses('CakeEvent', 'Event');

App::uses('CakeEventManager', 'Event');

App::uses('CakeResponse', 'Network');

/**

 * View, the V in the MVC triad. View interacts with Helpers and view variables passed

 * in from the controller to render the results of the controller action. Often this is HTML,

 * but can also take the form of JSON, XML, PDF's or streaming files.

 *

 * CakePHP uses a two-step-view pattern. This means that the view content is rendered first,

 * and then inserted into the selected layout. This also means you can pass data from the view to the

 * layout using `$this->set()`

 *

 * Since 2.1, the base View class also includes support for themes by default. Theme views are regular

 * view files that can provide unique HTML and static assets. If theme views are not found for the

 * current view the default app view files will be used. You can set `$this->theme = 'mytheme'`

 * in your Controller to use the Themes.

 *

 * Example of theme path with `$this->theme = 'SuperHot';` Would be `app/View/Themed/SuperHot/Posts`

 *

 * @package       Cake.View

 * @property      CacheHelper $Cache

 * @property      FormHelper $Form

 * @property      HtmlHelper $Html

 * @property      JsHelper $Js

 * @property      NumberHelper $Number

 * @property      PaginatorHelper $Paginator

 * @property      RssHelper $Rss

 * @property      SessionHelper $Session

 * @property      TextHelper $Text

 * @property      TimeHelper $Time

 * @property      ViewBlock $Blocks

 */

class View extends Object {

/**

 * Helpers collection

 *

 * @var HelperCollection

 */

	public $Helpers;

/**

 * ViewBlock instance.

 *

 * @var ViewBlock

 */

	public $Blocks;

/**

 * Name of the plugin.

 *

 * @link http://manual.cakephp.org/chapter/plugins

 * @var string

 */

	public $plugin = null;

/**

 * Name of the controller.

 *

 * @var string

 */

	public $name = null;

/**

 * Current passed params

 *

 * @var mixed

 */

	public $passedArgs = array();

/**

 * An array of names of built-in helpers to include.

 *

 * @var mixed

 */

	public $helpers = array();

/**

 * Path to View.

 *

 * @var string

 */

	public $viewPath = null;

/**

 * Variables for the view

 *

 * @var array

 */

	public $viewVars = array();

/**

 * Name of view to use with this View.

 *

 * @var string

 */

	public $view = null;

/**

 * Name of layout to use with this View.

 *

 * @var string

 */

	public $layout = 'default';

/**

 * Path to Layout.

 *

 * @var string

 */

	public $layoutPath = null;

/**

 * Turns on or off CakePHP's conventional mode of applying layout files. On by default.

 * Setting to off means that layouts will not be automatically applied to rendered views.

 *

 * @var bool

 */

	public $autoLayout = true;

/**

 * File extension. Defaults to CakePHP's template ".ctp".

 *

 * @var string

 */

	public $ext = '.ctp';

/**

 * Sub-directory for this view file. This is often used for extension based routing.

 * Eg. With an `xml` extension, $subDir would be `xml/`

 *

 * @var string

 */

	public $subDir = null;

/**

 * Theme name.

 *

 * @var string

 */

	public $theme = null;

/**

 * Used to define methods a controller that will be cached.

 *

 * @see Controller::$cacheAction

 * @var mixed

 */

	public $cacheAction = false;

/**

 * Holds current errors for the model validation.

 *

 * @var array

 */

	public $validationErrors = array();

/**

 * True when the view has been rendered.

 *

 * @var bool

 */

	public $hasRendered = false;

/**

 * List of generated DOM UUIDs.

 *

 * @var array

 */

	public $uuids = array();

/**

 * An instance of a CakeRequest object that contains information about the current request.

 * This object contains all the information about a request and several methods for reading

 * additional information about the request.

 *

 * @var CakeRequest

 */

	public $request;

/**

 * Reference to the Response object

 *

 * @var CakeResponse

 */

	public $response;

/**

 * The Cache configuration View will use to store cached elements. Changing this will change

 * the default configuration elements are stored under. You can also choose a cache config

 * per element.

 *

 * @var string

 * @see View::element()

 */

	public $elementCache = 'default';

/**

 * Element cache settings

 *

 * @var array

 * @see View::_elementCache();

 * @see View::_renderElement

 */

	public $elementCacheSettings = array();

/**

 * List of variables to collect from the associated controller.

 *

 * @var array

 */

	protected $_passedVars = array(

		'viewVars', 'autoLayout', 'ext', 'helpers', 'view', 'layout', 'name', 'theme',

		'layoutPath', 'viewPath', 'request', 'plugin', 'passedArgs', 'cacheAction'

	);

/**

 * Scripts (and/or other <head /> tags) for the layout.

 *

 * @var array

 */

	protected $_scripts = array();

/**

 * Holds an array of paths.

 *

 * @var array

 */

	protected $_paths = array();

/**

 * Holds an array of plugin paths.

 *

 * @var array

 */

	protected $_pathsForPlugin = array();

/**

 * The names of views and their parents used with View::extend();

 *

 * @var array

 */

	protected $_parents = array();

/**

 * The currently rendering view file. Used for resolving parent files.

 *

 * @var string

 */

	protected $_current = null;

/**

 * Currently rendering an element. Used for finding parent fragments

 * for elements.

 *

 * @var string

 */

	protected $_currentType = '';

/**

 * Content stack, used for nested templates that all use View::extend();

 *

 * @var array

 */

	protected $_stack = array();

/**

 * Instance of the CakeEventManager this View object is using

 * to dispatch inner events. Usually the manager is shared with

 * the controller, so it it possible to register view events in

 * the controller layer.

 *

 * @var CakeEventManager

 */

	protected $_eventManager = null;

/**

 * Whether the event manager was already configured for this object

 *

 * @var bool

 */

	protected $_eventManagerConfigured = false;

/**

 * Constant for view file type 'view'

 *

 * @var string

 */

	const TYPE_VIEW = 'view';

/**

 * Constant for view file type 'element'

 *

 * @var string

 */

	const TYPE_ELEMENT = 'element';

/**

 * Constant for view file type 'layout'

 *

 * @var string

 */

	const TYPE_LAYOUT = 'layout';

/**

 * Constructor

 *

 * @param Controller $controller A controller object to pull View::_passedVars from.

 */

	public function __construct(Controller $controller = null) {

		if (is_object($controller)) {

			$count = count($this->_passedVars);

			for ($j = 0; $j < $count; $j++) {

				$var = $this->_passedVars[$j];

				$this->{$var} = $controller->{$var};

			}

			$this->_eventManager = $controller->getEventManager();

		}

		if (empty($this->request) && !($this->request = Router::getRequest(true))) {

			$this->request = new CakeRequest(null, false);

			$this->request->base = '';

			$this->request->here = $this->request->webroot = '/';

		}

		if (is_object($controller) && isset($controller->response)) {

			$this->response = $controller->response;

		} else {

			$this->response = new CakeResponse();

		}

		$this->Helpers = new HelperCollection($this);

		$this->Blocks = new ViewBlock();

		$this->loadHelpers();

		parent::__construct();

	}

/**

 * Returns the CakeEventManager manager instance that is handling any callbacks.

 * You can use this instance to register any new listeners or callbacks to the

 * controller events, or create your own events and trigger them at will.

 *

 * @return CakeEventManager

 */

	public function getEventManager() {

		if (empty($this->_eventManager)) {

			$this->_eventManager = new CakeEventManager();

		}

		if (!$this->_eventManagerConfigured) {

			$this->_eventManager->attach($this->Helpers);

			$this->_eventManagerConfigured = true;

		}

		return $this->_eventManager;

	}

/**

 * Renders a piece of PHP with provided parameters and returns HTML, XML, or any other string.

 *

 * This realizes the concept of Elements, (or "partial layouts") and the $params array is used to send

 * data to be used in the element. Elements can be cached improving performance by using the `cache` option.

 *

 * @param string $name Name of template file in the/app/View/Elements/ folder,

 *   or `MyPlugin.template` to use the template element from MyPlugin. If the element

 *   is not found in the plugin, the normal view path cascade will be searched.

 * @param array $data Array of data to be made available to the rendered view (i.e. the Element)

 * @param array $options Array of options. Possible keys are:

 * - `cache` - Can either be `true`, to enable caching using the config in View::$elementCache. Or an array

 *   If an array, the following keys can be used:

 *   - `config` - Used to store the cached element in a custom cache configuration.

 *   - `key` - Used to define the key used in the Cache::write(). It will be prefixed with `element_`

 * - `plugin` - (deprecated!) Load an element from a specific plugin. This option is deprecated, and

 *              will be removed in CakePHP 3.0. Use `Plugin.element_name` instead.

 * - `callbacks` - Set to true to fire beforeRender and afterRender helper callbacks for this element.

 *   Defaults to false.

 * - `ignoreMissing` - Used to allow missing elements. Set to true to not trigger notices.

 * @return string Rendered Element

 */

	public function element($name, $data = array(), $options = array()) {

		$file = $plugin = null;

		if (isset($options['plugin'])) {

			$name = Inflector::camelize($options['plugin']) . '.' . $name;

		}

		if (!isset($options['callbacks'])) {

			$options['callbacks'] = false;

		}

		if (isset($options['cache'])) {

			$contents = $this->_elementCache($name, $data, $options);

			if ($contents !== false) {

				return $contents;

			}

		}

		$file = $this->_getElementFilename($name);

		if ($file) {

			return $this->_renderElement($file, $data, $options);

		}

		if (empty($options['ignoreMissing'])) {

			list ($plugin, $name) = pluginSplit($name, true);

			$name = str_replace('/', DS, $name);

			$file = $plugin . 'Elements' . DS . $name . $this->ext;

			trigger_error(__d('cake_dev', 'Element Not Found: %s', $file), E_USER_NOTICE);

		}

	}

/**

 * Checks if an element exists

 *

 * @param string $name Name of template file in the /app/View/Elements/ folder,

 *   or `MyPlugin.template` to check the template element from MyPlugin. If the element

 *   is not found in the plugin, the normal view path cascade will be searched.

 * @return bool Success

 */

	public function elementExists($name) {

		return (bool)$this->_getElementFilename($name);

	}

/**

 * Renders view for given view file and layout.

 *

 * Render triggers helper callbacks, which are fired before and after the view are rendered,

 * as well as before and after the layout. The helper callbacks are called:

 *

 * - `beforeRender`

 * - `afterRender`

 * - `beforeLayout`

 * - `afterLayout`

 *

 * If View::$autoRender is false and no `$layout` is provided, the view will be returned bare.

 *

 * View and layout names can point to plugin views/layouts. Using the `Plugin.view` syntax

 * a plugin view/layout can be used instead of the app ones. If the chosen plugin is not found

 * the view will be located along the regular view path cascade.

 *

 * @param string $view Name of view file to use

 * @param string $layout Layout to use.

 * @return string|null Rendered content or null if content already rendered and returned earlier.

 * @throws CakeException If there is an error in the view.

 */

	public function render($view = null, $layout = null) {

		if ($this->hasRendered) {

			return;

		}

		if ($view !== false && $viewFileName = $this->_getViewFileName($view)) {

			$this->_currentType = self::TYPE_VIEW;

			$this->getEventManager()->dispatch(new CakeEvent('View.beforeRender', $this, array($viewFileName)));

			$this->Blocks->set('content', $this->_render($viewFileName));

			$this->getEventManager()->dispatch(new CakeEvent('View.afterRender', $this, array($viewFileName)));

		}

		if ($layout === null) {

			$layout = $this->layout;

		}

		if ($layout && $this->autoLayout) {

			$this->Blocks->set('content', $this->renderLayout('', $layout));

		}

		$this->hasRendered = true;

		return $this->Blocks->get('content');

	}

/**

 * Renders a layout. Returns output from _render(). Returns false on error.

 * Several variables are created for use in layout.

 *

 * - `title_for_layout` - A backwards compatible place holder, you should set this value if you want more control.

 * - `content_for_layout` - contains rendered view file

 * - `scripts_for_layout` - Contains content added with addScript() as well as any content in

 *   the 'meta', 'css', and 'script' blocks. They are appended in that order.

 *

 * Deprecated features:

 *

 * - `$scripts_for_layout` is deprecated and will be removed in CakePHP 3.0.

 *   Use the block features instead. `meta`, `css` and `script` will be populated

 *   by the matching methods on HtmlHelper.

 * - `$title_for_layout` is deprecated and will be removed in CakePHP 3.0.

 *   Use the `title` block instead.

 * - `$content_for_layout` is deprecated and will be removed in CakePHP 3.0.

 *   Use the `content` block instead.

 *

 * @param string $content Content to render in a view, wrapped by the surrounding layout.

 * @param string $layout Layout name

 * @return mixed Rendered output, or false on error

 * @throws CakeException if there is an error in the view.

 */

	public function renderLayout($content, $layout = null) {

		$layoutFileName = $this->_getLayoutFileName($layout);

		if (empty($layoutFileName)) {

			return $this->Blocks->get('content');

		}

		if (empty($content)) {

			$content = $this->Blocks->get('content');

		} else {

			$this->Blocks->set('content', $content);

		}

		$this->getEventManager()->dispatch(new CakeEvent('View.beforeLayout', $this, array($layoutFileName)));

		$scripts = implode("\n\t", $this->_scripts);

		$scripts .= $this->Blocks->get('meta') . $this->Blocks->get('css') . $this->Blocks->get('script');

		$this->viewVars = array_merge($this->viewVars, array(

			'content_for_layout' => $content,

			'scripts_for_layout' => $scripts,

		));

		$title = $this->Blocks->get('title');

		if ($title === '') {

			if (isset($this->viewVars['title_for_layout'])) {

				$title = $this->viewVars['title_for_layout'];

			} else {

				$title = Inflector::humanize($this->viewPath);

			}

		}

		$this->viewVars['title_for_layout'] = $title;

		$this->Blocks->set('title', $title);

		$this->_currentType = self::TYPE_LAYOUT;

		$this->Blocks->set('content', $this->_render($layoutFileName));

		$this->getEventManager()->dispatch(new CakeEvent('View.afterLayout', $this, array($layoutFileName)));

		return $this->Blocks->get('content');

	}

/**

 * Render cached view. Works in concert with CacheHelper and Dispatcher to

 * render cached view files.

 *

 * @param string $filename the cache file to include

 * @param string $timeStart the page render start time

 * @return bool Success of rendering the cached file.

 */

	public function renderCache($filename, $timeStart) {

		$response = $this->response;

		ob_start();

		include $filename;

		$type = $response->mapType($response->type());

		if (Configure::read('debug') > 0 && $type === 'html') {

			echo "<!-- Cached Render Time: " . round(microtime(true) - $timeStart, 4) . "s -->";

		}

		$out = ob_get_clean();

		if (preg_match('/^<!--cachetime:(\\d+)-->/', $out, $match)) {

			if (time() >= $match['1']) {

				//@codingStandardsIgnoreStart

				@unlink($filename);

				//@codingStandardsIgnoreEnd

				unset($out);

				return false;

			}

			return substr($out, strlen($match[0]));

		}

	}

/**

 * Returns a list of variables available in the current View context

 *

 * @return array Array of the set view variable names.

 */

	public function getVars() {

		return array_keys($this->viewVars);

	}

/**

 * Returns the contents of the given View variable(s)

 *

 * @param string $var The view var you want the contents of.

 * @return mixed The content of the named var if its set, otherwise null.

 * @deprecated Will be removed in 3.0. Use View::get() instead.

 */

	public function getVar($var) {

		return $this->get($var);

	}

/**

 * Returns the contents of the given View variable.

 *

 * @param string $var The view var you want the contents of.

 * @param mixed $default The default/fallback content of $var.

 * @return mixed The content of the named var if its set, otherwise $default.

 */

	public function get($var, $default = null) {

		if (!isset($this->viewVars[$var])) {

			return $default;

		}

		return $this->viewVars[$var];

	}

/**

 * Get the names of all the existing blocks.

 *

 * @return array An array containing the blocks.

 * @see ViewBlock::keys()

 */

	public function blocks() {

		return $this->Blocks->keys();

	}

/**

 * Start capturing output for a 'block'

 *

 * @param string $name The name of the block to capture for.

 * @return void

 * @see ViewBlock::start()

 */

	public function start($name) {

		$this->Blocks->start($name);

	}

/**

 * Start capturing output for a 'block' if it has no content

 *

 * @param string $name The name of the block to capture for.

 * @return void

 * @see ViewBlock::startIfEmpty()

 */

	public function startIfEmpty($name) {

		$this->Blocks->startIfEmpty($name);

	}

/**

 * Append to an existing or new block. Appending to a new

 * block will create the block.

 *

 * @param string $name Name of the block

 * @param mixed $value The content for the block.

 * @return void

 * @see ViewBlock::concat()

 */

	public function append($name, $value = null) {

		$this->Blocks->concat($name, $value);

	}

/**

 * Prepend to an existing or new block. Prepending to a new

 * block will create the block.

 *

 * @param string $name Name of the block

 * @param mixed $value The content for the block.

 * @return void

 * @see ViewBlock::concat()

 */

	public function prepend($name, $value = null) {

		$this->Blocks->concat($name, $value, ViewBlock::PREPEND);

	}

/**

 * Set the content for a block. This will overwrite any

 * existing content.

 *

 * @param string $name Name of the block

 * @param mixed $value The content for the block.

 * @return void

 * @see ViewBlock::set()

 */

	public function assign($name, $value) {

		$this->Blocks->set($name, $value);

	}

/**

 * Fetch the content for a block. If a block is

 * empty or undefined '' will be returned.

 *

 * @param string $name Name of the block

 * @param string $default Default text

 * @return string default The block content or $default if the block does not exist.

 * @see ViewBlock::get()

 */

	public function fetch($name, $default = '') {

		return $this->Blocks->get($name, $default);

	}

/**

 * End a capturing block. The compliment to View::start()

 *

 * @return void

 * @see ViewBlock::end()

 */

	public function end() {

		$this->Blocks->end();

	}

/**

 * Provides view or element extension/inheritance. Views can extends a

 * parent view and populate blocks in the parent template.

 *

 * @param string $name The view or element to 'extend' the current one with.

 * @return void

 * @throws LogicException when you extend a view with itself or make extend loops.

 * @throws LogicException when you extend an element which doesn't exist

 */

	public function extend($name) {

		if ($name[0] === '/' || $this->_currentType === self::TYPE_VIEW) {

			$parent = $this->_getViewFileName($name);

		} else {

			switch ($this->_currentType) {

				case self::TYPE_ELEMENT:

					$parent = $this->_getElementFileName($name);

					if (!$parent) {

						list($plugin, $name) = $this->pluginSplit($name);

						$paths = $this->_paths($plugin);

						$defaultPath = $paths[0] . 'Elements' . DS;

						throw new LogicException(__d(

							'cake_dev',

							'You cannot extend an element which does not exist (%s).',

							$defaultPath . $name . $this->ext

						));

					}

					break;

				case self::TYPE_LAYOUT:

					$parent = $this->_getLayoutFileName($name);

					break;

				default:

					$parent = $this->_getViewFileName($name);

			}

		}

		if ($parent == $this->_current) {

			throw new LogicException(__d('cake_dev', 'You cannot have views extend themselves.'));

		}

		if (isset($this->_parents[$parent]) && $this->_parents[$parent] == $this->_current) {

			throw new LogicException(__d('cake_dev', 'You cannot have views extend in a loop.'));

		}

		$this->_parents[$this->_current] = $parent;

	}

/**

 * Adds a script block or other element to be inserted in $scripts_for_layout in

 * the `<head />` of a document layout

 *

 * @param string $name Either the key name for the script, or the script content. Name can be used to

 *   update/replace a script element.

 * @param string $content The content of the script being added, optional.

 * @return void

 * @deprecated Will be removed in 3.0. Superseded by blocks functionality.

 * @see View::start()

 */

	public function addScript($name, $content = null) {

		if (empty($content)) {

			if (!in_array($name, array_values($this->_scripts))) {

				$this->_scripts[] = $name;

			}

		} else {

			$this->_scripts[$name] = $content;

		}

	}

/**

 * Generates a unique, non-random DOM ID for an object, based on the object type and the target URL.

 *

 * @param string $object Type of object, i.e. 'form' or 'link'

 * @param string $url The object's target URL

 * @return string

 */

	public function uuid($object, $url) {

		$c = 1;

		$url = Router::url($url);

		$hash = $object . substr(md5($object . $url), 0, 10);

		while (in_array($hash, $this->uuids)) {

			$hash = $object . substr(md5($object . $url . $c), 0, 10);

			$c++;

		}

		$this->uuids[] = $hash;

		return $hash;

	}

/**

 * Allows a template or element to set a variable that will be available in

 * a layout or other element. Analogous to Controller::set().

 *

 * @param string|array $one A string or an array of data.

 * @param string|array $two Value in case $one is a string (which then works as the key).

 *    Unused if $one is an associative array, otherwise serves as the values to $one's keys.

 * @return void

 */

	public function set($one, $two = null) {

		$data = null;

		if (is_array($one)) {

			if (is_array($two)) {

				$data = array_combine($one, $two);

			} else {

				$data = $one;

			}

		} else {

			$data = array($one => $two);

		}

		if (!$data) {

			return false;

		}

		$this->viewVars = $data + $this->viewVars;

	}

/**

 * Magic accessor for helpers. Provides access to attributes that were deprecated.

 *

 * @param string $name Name of the attribute to get.

 * @return mixed

 */

	public function __get($name) {

		switch ($name) {

			case 'base':

			case 'here':

			case 'webroot':

			case 'data':

				return $this->request->{$name};

			case 'action':

				return $this->request->params['action'];

			case 'params':

				return $this->request;

			case 'output':

				return $this->Blocks->get('content');

		}

		if (isset($this->Helpers->{$name})) {

			$this->{$name} = $this->Helpers->{$name};

			return $this->Helpers->{$name};

		}

		return $this->{$name};

	}

/**

 * Magic accessor for deprecated attributes.

 *

 * @param string $name Name of the attribute to set.

 * @param mixed $value Value of the attribute to set.

 * @return mixed

 */

	public function __set($name, $value) {

		switch ($name) {

			case 'output':

				return $this->Blocks->set('content', $value);

			default:

				$this->{$name} = $value;

		}

	}

/**

 * Magic isset check for deprecated attributes.

 *

 * @param string $name Name of the attribute to check.

 * @return bool

 */

	public function __isset($name) {

		if (isset($this->{$name})) {

			return true;

		}

		$magicGet = array('base', 'here', 'webroot', 'data', 'action', 'params', 'output');

		if (in_array($name, $magicGet)) {

			return $this->__get($name) !== null;

		}

		return false;

	}

/**

 * Interact with the HelperCollection to load all the helpers.

 *

 * @return void

 */

	public function loadHelpers() {

		$helpers = HelperCollection::normalizeObjectArray($this->helpers);

		foreach ($helpers as $properties) {

			list(, $class) = pluginSplit($properties['class']);

			$this->{$class} = $this->Helpers->load($properties['class'], $properties['settings']);

		}

	}

/**

 * Renders and returns output for given view filename with its

 * array of data. Handles parent/extended views.

 *

 * @param string $viewFile Filename of the view

 * @param array $data Data to include in rendered view. If empty the current View::$viewVars will be used.

 * @return string Rendered output

 * @throws CakeException when a block is left open.

 */

	protected function _render($viewFile, $data = array()) {

		if (empty($data)) {

			$data = $this->viewVars;

		}

		$this->_current = $viewFile;

		$initialBlocks = count($this->Blocks->unclosed());

		$eventManager = $this->getEventManager();

		$beforeEvent = new CakeEvent('View.beforeRenderFile', $this, array($viewFile));

		$eventManager->dispatch($beforeEvent);

		$content = $this->_evaluate($viewFile, $data);

		$afterEvent = new CakeEvent('View.afterRenderFile', $this, array($viewFile, $content));

		$afterEvent->modParams = 1;

		$eventManager->dispatch($afterEvent);

		$content = $afterEvent->data[1];

		if (isset($this->_parents[$viewFile])) {

			$this->_stack[] = $this->fetch('content');

			$this->assign('content', $content);

			$content = $this->_render($this->_parents[$viewFile]);

			$this->assign('content', array_pop($this->_stack));

		}

		$remainingBlocks = count($this->Blocks->unclosed());

		if ($initialBlocks !== $remainingBlocks) {

			throw new CakeException(__d('cake_dev', 'The "%s" block was left open. Blocks are not allowed to cross files.', $this->Blocks->active()));

		}

		return $content;

	}

/**

 * Sandbox method to evaluate a template / view script in.

 *

 * @param string $viewFile Filename of the view

 * @param array $dataForView Data to include in rendered view.

 *    If empty the current View::$viewVars will be used.

 * @return string Rendered output

 */

	protected function _evaluate($viewFile, $dataForView) {

		$this->__viewFile = $viewFile;

		extract($dataForView);

		ob_start();

		include $this->__viewFile;

		unset($this->__viewFile);

		return ob_get_clean();

	}

/**

 * Loads a helper. Delegates to the `HelperCollection::load()` to load the helper

 *

 * @param string $helperName Name of the helper to load.

 * @param array $settings Settings for the helper

 * @return Helper a constructed helper object.

 * @see HelperCollection::load()

 */

	public function loadHelper($helperName, $settings = array()) {

		return $this->Helpers->load($helperName, $settings);

	}

/**

 * Returns filename of given action's template file (.ctp) as a string.

 * CamelCased action names will be under_scored! This means that you can have

 * LongActionNames that refer to long_action_names.ctp views.

 *

 * @param string $name Controller action to find template filename for

 * @return string Template filename

 * @throws MissingViewException when a view file could not be found.

 */

	protected function _getViewFileName($name = null) {

		$subDir = null;

		if ($this->subDir !== null) {

			$subDir = $this->subDir . DS;

		}

		if ($name === null) {

			$name = $this->view;

		}

		$name = str_replace('/', DS, $name);

		list($plugin, $name) = $this->pluginSplit($name);

		if (strpos($name, DS) === false && $name[0] !== '.') {

			$name = $this->viewPath . DS . $subDir . Inflector::underscore($name);

		} elseif (strpos($name, DS) !== false) {

			if ($name[0] === DS || $name[1] === ':') {

				if (is_file($name)) {

					return $name;

				}

				$name = trim($name, DS);

			} elseif ($name[0] === '.') {

				$name = substr($name, 3);

			} elseif (!$plugin || $this->viewPath !== $this->name) {

				$name = $this->viewPath . DS . $subDir . $name;

			}

		}