forked from adobe/brackets
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CSSAgent.js
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CSSAgent.js
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/*
* Copyright (c) 2012 Adobe Systems Incorporated. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
/*jslint vars: true, plusplus: true, devel: true, nomen: true, indent: 4, forin: true, maxerr: 50, regexp: true */
/*global define, $, PathUtils */
/**
* CSSAgent keeps track of loaded style sheets and allows reloading them
* from a {Document}.
*/
define(function CSSAgent(require, exports, module) {
"use strict";
require("thirdparty/path-utils/path-utils.min");
var Inspector = require("LiveDevelopment/Inspector/Inspector");
var DocumentManager = require("document/DocumentManager");
var _load; // {$.Deferred} load promise
var _urlToStyle; // {url -> loaded} style definition
/**
* Create a canonicalized version of the given URL, stripping off query strings and hashes.
* @param {string} url the URL to canonicalize
* @return the canonicalized URL
*/
function _canonicalize(url) {
return PathUtils.parseUrl(url).hrefNoSearch;
}
// WebInspector Event: Runtime.loadEventFired
function _onLoadingFinished(event, res) {
var doc = DocumentManager.getCurrentDocument();
_urlToStyle = {};
Inspector.CSS.getAllStyleSheets(function onGetAllStyleSheets(res) {
var i, header;
for (i in res.headers) {
header = res.headers[i];
_urlToStyle[_canonicalize(header.sourceURL)] = header;
}
_load.resolve();
if (doc.extension === "css")
reloadCSSForDocument(doc);
});
}
/** Get a style sheet for a url
* @param {string} url
*/
function styleForURL(url) {
return _urlToStyle[_canonicalize(url)];
}
/** Get a list of all loaded stylesheet files by URL */
function getStylesheetURLs() {
var urls = [], url;
for (url in _urlToStyle) {
if (_urlToStyle.hasOwnProperty(url)) {
urls.push(url);
}
}
return urls;
}
/** Reload a CSS style sheet from a document
* @param {Document} document
*/
function reloadCSSForDocument(doc) {
var style = styleForURL(doc.url);
if (!style)
return;
console.assert(style, "Style Sheet for document not loaded: " + doc.url);
Inspector.CSS.setStyleSheetText(style.styleSheetId, doc.getText(true));
}
/** Empties a CSS style sheet given a document that has been deleted
* @param {Document} document
*/
function clearCSSForDocument(doc) {
var style = styleForURL(doc.url);
console.assert(style, "Style Sheet for document not loaded: " + doc.url);
Inspector.CSS.setStyleSheetText(style.styleSheetId, "");
}
/** Initialize the agent */
function load() {
_load = new $.Deferred();
$(Inspector.Network).on("loadingFinished.CSSAgent", _onLoadingFinished);
return _load.promise();
}
/** Clean up */
function unload() {
$(Inspector.Page).off(".CSSAgent");
}
// Export public functions
exports.styleForURL = styleForURL;
exports.getStylesheetURLs = getStylesheetURLs;
exports.reloadCSSForDocument = reloadCSSForDocument;
exports.clearCSSForDocument = clearCSSForDocument;
exports.load = load;
exports.unload = unload;
});