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phab/src/infratructure/celerity/response/CelerityStaticResourceResponse.php
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CelerityStaticResourceResponse.php
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<?php
/*
* Copyright 2011 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
final class CelerityStaticResourceResponse {
private $symbols = array();
private $needsResolve = true;
private $resolved;
public function requireResource($symbol) {
$this->symbols[$symbol] = true;
$this->needsResolve = true;
return $this;
}
private function resolveResources() {
if ($this->needsResolve) {
$map = CelerityResourceMap::getInstance();
$this->resolved = $map->resolveResources(array_keys($this->symbols));
$this->needsResolve = false;
}
return $this;
}
public function renderResourcesOfType($type) {
$this->resolveResources();
$output = array();
foreach ($this->resolved as $resource) {
if ($resource['type'] == $type) {
$output[] = $this->renderResource($resource);
}
}
return implode("\n", $output);
}
private function renderResource(array $resource) {
switch ($resource['type']) {
case 'css':
$path = phutil_escape_html($resource['path']);
return '<link rel="stylesheet" type="text/css" href="'.$path.'" />';
case 'js':
$path = phutil_escape_html($resource['path']);
return '<script type="text/javascript" src="'.$path.'" />';
}
throw new Exception("Unable to render resource.");
}
}
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