silverstripe-framework/core/manifest/TemplateLoader.php

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<?php
/**
* Handles finding templates from a stack of template manifest objects.
*
* @package sapphire
* @subpackage manifest
*/
class SS_TemplateLoader {
/**
* @var SS_TemplateLoader
*/
private static $instance;
/**
* @var SS_TemplateManifest[]
*/
protected $manifests = array();
/**
* @return SS_TemplateLoader
*/
public static function instance() {
return self::$instance ? self::$instance : self::$instance = new self();
}
/**
* Returns the currently active template manifest instance.
*
* @return SS_TemplateManifest
*/
public function getManifest() {
return $this->manifests[count($this->manifests) - 1];
}
/**
* @param SS_TemplateManifest $manifest
*/
public function pushManifest(SS_TemplateManifest $manifest) {
$this->manifests[] = $manifest;
}
/**
* @return SS_TemplateManifest
*/
public function popManifest() {
return array_pop($this->manifests);
}
/**
* Attempts to find possible candidate templates from a set of template
* names and a theme.
*
* The template names can be passed in as plain strings, or be in the
* format "type/name", where type is the type of template to search for
* (e.g. Includes, Layout).
*
* @param string|array $templates
* @param string $theme
* @return array
*/
public function findTemplates($templates, $theme = null) {
$result = array();
foreach ((array) $templates as $template) {
$found = false;
if (strpos($template, '/')) {
list($type, $template) = explode('/', $template, 2);
} else {
$type = null;
}
if ($candidates = $this->getManifest()->getTemplate($template)) {
if ($theme && isset($candidates['themes'][$theme])) {
$found = $candidates['themes'][$theme];
} else {
unset($candidates['themes']);
$found = $candidates;
}
if ($found) {
if ($type && isset($found[$type])) {
$found = array('main' => $found[$type]);
}
$result = array_merge($found, $result);
}
}
}
return $result;
}
}