Viewing file:  GadgetRenderer.php (2.19 KB) -rwxr-xr-x
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<?php
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
/**
* base class that all the rendering methods inherit from
*
*/
abstract class GadgetRenderer {
protected $context;
public function __construct(GadgetContext $context) {
$this->context = $context;
}
/**
* generates the library string (core:caja:etc.js) including a checksum of all the
* javascript content (?v=<md5 of js>) for cache busting
*
* @param string $libs
* @param Gadget $gadget
* @return string the list of libraries in core:caja:etc.js?v=checksum> format
*/
protected function getJsUrl($features) {
$ret = '';
if (! is_array($features) || ! count($features)) {
$ret = 'core';
} else {
$ret = implode(':', $features);
}
$cache = Cache::createCache(Config::get('feature_cache'), 'FeatureCache');
if (($md5 = $cache->get(md5('getJsUrlMD5'))) === false) {
$registry = $this->context->getRegistry();
$features = $registry->features;
// Build a version string from the md5() checksum of all included javascript
// to ensure the client always has the right version
$inlineJs = '';
foreach ($features as $feature => $content) {
$inlineJs .= $registry->getFeatureContent($feature, $this->context, true);
}
$md5 = md5($inlineJs);
$cache->set(md5('getJsUrlMD5'), $md5);
}
$ret .= ".js?v=" . $md5;
return $ret;
}
abstract function renderGadget(Gadget $gadget, $view);
}
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