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phab/src/infrastructure/celerity/api/utils.php
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utils.php
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<?php
/*
* Copyright 2012 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.
*/
/**
* Include a CSS or JS static resource by name. This function records a
* dependency for the current page, so when a response is generated it can be
* included. You can call this method from any context, and it is recommended
* you invoke it as close to the actual dependency as possible so that page
* dependencies are minimized.
*
* For more information, see @{article:Adding New CSS and JS}.
*
* @param string Name of the celerity module to include. This is whatever you
* annotated as "@provides" in the file.
* @return void
*
* @group celerity
*/
function require_celerity_resource($symbol) {
$response = CelerityAPI::getStaticResourceResponse();
$response->requireResource($symbol);
}
/**
* Generate a node ID which is guaranteed to be unique for the current page,
* even across Ajax requests. You should use this method to generate IDs for
* nodes which require a uniqueness guarantee.
*
* @return string A string appropriate for use as an 'id' attribute on a DOM
* node. It is guaranteed to be unique for the current page, even
* if the current request is a subsequent Ajax request.
*
* @group celerity
*/
function celerity_generate_unique_node_id() {
static $uniq = 0;
$response = CelerityAPI::getStaticResourceResponse();
$block = $response->getMetadataBlock();
return 'UQ'.$block.'_'.($uniq++);
}
/**
* Get the versioned URI for a raw resource, like an image.
*
* @param string Path to the raw image.
* @return string Versioned path to the image, if one is available.
*
* @group celerity
*/
function celerity_get_resource_uri($resource) {
$map = CelerityResourceMap::getInstance();
$info = $map->lookupFileInformation($resource);
if ($info) {
return $info['uri'];
} else {
return $resource;
}
}
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