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/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
WebInspector.SourceMapManager = function()
{
WebInspector.Object.call(this);
this._sourceMapURLMap = {};
this._downloadingSourceMaps = {};
WebInspector.Frame.addEventListener(WebInspector.Frame.Event.MainResourceDidChange, this._mainResourceDidChange, this);
};
WebInspector.SourceMapManager.prototype = {
constructor: WebInspector.SourceMapManager,
// Public
sourceMapForURL: function(sourceMapURL)
{
return this._sourceMapURLMap[sourceMapURL];
},
downloadSourceMap: function(sourceMapURL, baseURL, originalSourceCode)
{
sourceMapURL = absoluteURL(sourceMapURL, baseURL);
if (!sourceMapURL)
return;
console.assert(originalSourceCode.url);
if (!originalSourceCode.url)
return;
// FIXME: <rdar://problem/13265694> Source Maps: Better handle when multiple resources reference the same SourceMap
if (sourceMapURL in this._sourceMapURLMap)
return;
if (sourceMapURL in this._downloadingSourceMaps)
return;
this._loadAndParseSourceMap(sourceMapURL, baseURL, originalSourceCode);
},
// Private
_loadAndParseSourceMap: function(sourceMapURL, baseURL, originalSourceCode)
{
this._downloadingSourceMaps[sourceMapURL] = true;
// FIXME: <rdar://problem/13238886> Source Maps: Frontend needs asynchronous resource loading of content + mime type
var response = InspectorFrontendHost.loadResourceSynchronously(sourceMapURL);
if (response === undefined) {
this._loadAndParseFailed(sourceMapURL);
return;
}
if (response.slice(0, 3) === ")]}") {
var firstNewlineIndex = response.indexOf("\n");
if (firstNewlineIndex === -1) {
this._loadAndParseFailed(sourceMapURL);
return;
}
response = response.substring(firstNewlineIndex);
}
try {
var payload = JSON.parse(response);
var baseURL = sourceMapURL.startsWith("data:") ? originalSourceCode.url : sourceMapURL;
var sourceMap = new WebInspector.SourceMap(baseURL, payload, originalSourceCode);
this._loadAndParseSucceeded(sourceMapURL, sourceMap);
} catch(e) {
console.error(e.message);
this._loadAndParseFailed(sourceMapURL);
}
},
_loadAndParseFailed: function(sourceMapURL)
{
delete this._downloadingSourceMaps[sourceMapURL];
},
_loadAndParseSucceeded: function(sourceMapURL, sourceMap)
{
if (!(sourceMapURL in this._downloadingSourceMaps))
return;
delete this._downloadingSourceMaps[sourceMapURL];
this._sourceMapURLMap[sourceMapURL] = sourceMap;
var sources = sourceMap.sources();
for (var i = 0; i < sources.length; ++i) {
var sourceMapResource = new WebInspector.SourceMapResource(sources[i], sourceMap);
sourceMap.addResource(sourceMapResource);
}
// Associate the SourceMap with the originalSourceCode.
sourceMap.originalSourceCode.addSourceMap(sourceMap);
// If the originalSourceCode was not a Resource, be sure to also associate with the Resource if one exists.
// FIXME: We should try to use the right frame instead of a global lookup by URL.
if (!(sourceMap.originalSourceCode instanceof WebInspector.Resource)) {
console.assert(sourceMap.originalSourceCode instanceof WebInspector.Script);
var resource = sourceMap.originalSourceCode.resource;
if (resource)
resource.addSourceMap(sourceMap);
}
},
_mainResourceDidChange: function(event)
{
if (!event.target.isMainFrame())
return;
this._sourceMapURLMap = {};
this._downloadingSourceMaps = {};
}
};
WebInspector.SourceMapManager.prototype.__proto__ = WebInspector.Object.prototype;
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