126 lines
4.2 KiB
PHP
126 lines
4.2 KiB
PHP
<?php
|
|
|
|
/*
|
|
* This file is part of the Symfony package.
|
|
*
|
|
* (c) Fabien Potencier <fabien@symfony.com>
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace Symfony\Component\Form\Extension\Templating;
|
|
|
|
use Symfony\Component\Form\AbstractRendererEngine;
|
|
use Symfony\Component\Form\FormView;
|
|
use Symfony\Component\Templating\EngineInterface;
|
|
|
|
/**
|
|
* @author Bernhard Schussek <bschussek@gmail.com>
|
|
*/
|
|
class TemplatingRendererEngine extends AbstractRendererEngine
|
|
{
|
|
/**
|
|
* @var EngineInterface
|
|
*/
|
|
private $engine;
|
|
|
|
public function __construct(EngineInterface $engine, array $defaultThemes = array())
|
|
{
|
|
parent::__construct($defaultThemes);
|
|
|
|
$this->engine = $engine;
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function renderBlock(FormView $view, $resource, $blockName, array $variables = array())
|
|
{
|
|
return trim($this->engine->render($resource, $variables));
|
|
}
|
|
|
|
/**
|
|
* Loads the cache with the resource for a given block name.
|
|
*
|
|
* This implementation tries to load as few blocks as possible, since each block
|
|
* is represented by a template on the file system.
|
|
*
|
|
* @see getResourceForBlock()
|
|
*
|
|
* @param string $cacheKey The cache key of the form view.
|
|
* @param FormView $view The form view for finding the applying themes.
|
|
* @param string $blockName The name of the block to load.
|
|
*
|
|
* @return bool True if the resource could be loaded, false otherwise.
|
|
*/
|
|
protected function loadResourceForBlockName($cacheKey, FormView $view, $blockName)
|
|
{
|
|
// Recursively try to find the block in the themes assigned to $view,
|
|
// then of its parent form, then of the parent form of the parent and so on.
|
|
// When the root form is reached in this recursion, also the default
|
|
// themes are taken into account.
|
|
|
|
// Check each theme whether it contains the searched block
|
|
if (isset($this->themes[$cacheKey])) {
|
|
for ($i = count($this->themes[$cacheKey]) - 1; $i >= 0; --$i) {
|
|
if ($this->loadResourceFromTheme($cacheKey, $blockName, $this->themes[$cacheKey][$i])) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check the default themes once we reach the root form without success
|
|
if (!$view->parent) {
|
|
for ($i = count($this->defaultThemes) - 1; $i >= 0; --$i) {
|
|
if ($this->loadResourceFromTheme($cacheKey, $blockName, $this->defaultThemes[$i])) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If we did not find anything in the themes of the current view, proceed
|
|
// with the themes of the parent view
|
|
if ($view->parent) {
|
|
$parentCacheKey = $view->parent->vars[self::CACHE_KEY_VAR];
|
|
|
|
if (!isset($this->resources[$parentCacheKey][$blockName])) {
|
|
$this->loadResourceForBlockName($parentCacheKey, $view->parent, $blockName);
|
|
}
|
|
|
|
// If a template exists in the parent themes, cache that template
|
|
// for the current theme as well to speed up further accesses
|
|
if ($this->resources[$parentCacheKey][$blockName]) {
|
|
$this->resources[$cacheKey][$blockName] = $this->resources[$parentCacheKey][$blockName];
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Cache that we didn't find anything to speed up further accesses
|
|
$this->resources[$cacheKey][$blockName] = false;
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Tries to load the resource for a block from a theme.
|
|
*
|
|
* @param string $cacheKey The cache key for storing the resource.
|
|
* @param string $blockName The name of the block to load a resource for.
|
|
* @param mixed $theme The theme to load the block from.
|
|
*
|
|
* @return bool True if the resource could be loaded, false otherwise.
|
|
*/
|
|
protected function loadResourceFromTheme($cacheKey, $blockName, $theme)
|
|
{
|
|
if ($this->engine->exists($templateName = $theme.':'.$blockName.'.html.php')) {
|
|
$this->resources[$cacheKey][$blockName] = $templateName;
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|