DevTools: support uiLocationToRawLocations for CSS

third_party/WebKit/Source/devtools/front_end/bindings/SASSSourceMapping.js

 /*
  * Copyright (C) 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 69 matching lines @@
       this._sourceMapIdToHeaders.set(sourceMapId, header);
       this._sourceMapAttachedForTest(sourceMap);
       return;
     }
     this._sourceMapIdToHeaders.set(sourceMapId, header);
 
     for (var sassURL of sourceMap.sourceURLs()) {
       var contentProvider = sourceMap.sourceContentProvider(sassURL, Common.resourceTypes.SourceMapStyleSheet);
       var embeddedContent = sourceMap.embeddedContentByURL(sassURL);
       var embeddedContentLength = typeof embeddedContent === 'string' ? embeddedContent.length : null;
-      this._networkProject.addSourceMapFile(contentProvider, header.frameId, false, embeddedContentLength);
+      var uiSourceCode =
+          this._networkProject.addSourceMapFile(contentProvider, header.frameId, false, embeddedContentLength);
+      uiSourceCode[Bindings.SASSSourceMapping._sourceMapSymbol] = sourceMap;
     }
     Bindings.cssWorkspaceBinding.updateLocations(header);
     this._sourceMapAttachedForTest(sourceMap);
   }
 
   /**
    * @param {!Common.Event} event
    */
   _sourceMapDetached(event) {
     var header = /** @type {!SDK.CSSStyleSheetHeader} */ (event.data.client);
@@ skipping 19 matching lines @@
       Bindings.cssWorkspaceBinding.updateLocations(header);
       for (var sourceURL of newSources.keys()) {
         var uiSourceCode = Bindings.NetworkProject.uiSourceCodeForStyleURL(this._workspace, sourceURL, header);
         if (!uiSourceCode) {
           console.error('Failed to update source for ' + sourceURL);
           continue;
         }
         if (handledUISourceCodes.has(uiSourceCode))
           continue;
         handledUISourceCodes.add(uiSourceCode);
+        uiSourceCode[Bindings.SASSSourceMapping._sourceMapSymbol] = sourceMap;
         var sassText = /** @type {string} */ (newSources.get(sourceURL));
         uiSourceCode.setWorkingCopy(sassText);
       }
     }
   }
 
   /**
    * @override
    * @param {!SDK.CSSLocation} rawLocation
    * @return {?Workspace.UILocation}
    */
   rawLocationToUILocation(rawLocation) {
     var header = rawLocation.header();
     if (!header)
       return null;
     var sourceMap = this._sourceMapManager.sourceMapForClient(header);
     if (!sourceMap)
       return null;
     var entry = sourceMap.findEntry(rawLocation.lineNumber, rawLocation.columnNumber);
     if (!entry || !entry.sourceURL)
       return null;
     var uiSourceCode = Bindings.NetworkProject.uiSourceCodeForStyleURL(this._workspace, entry.sourceURL, header);
     if (!uiSourceCode)
       return null;
     return uiSourceCode.uiLocation(entry.sourceLineNumber || 0, entry.sourceColumnNumber);
   }
 
+  /**
+   * @override
+   * @param {!Workspace.UILocation} uiLocation
+   * @return {!Array<!SDK.CSSLocation>}
+   */
+  uiLocationToRawLocations(uiLocation) {
+    var sourceMap = uiLocation.uiSourceCode[Bindings.SASSSourceMapping._sourceMapSymbol];
+    if (!sourceMap)
+      return [];
+    var headers = this._sourceMapManager.clientsForSourceMap(sourceMap);
+    var entry =
+        sourceMap.findReverseEntry(uiLocation.uiSourceCode.url(), uiLocation.lineNumber, uiLocation.columnNumber);

[dgozman, 2017/05/04 00:04:56]

Could there be multiple?

+    return headers.map(header => new SDK.CSSLocation(header, entry.lineNumber, entry.columnNumber));
+  }
+
   dispose() {
     Common.EventTarget.removeEventListeners(this._eventListeners);
   }
-};
+};
+
+Bindings.SASSSourceMapping._sourceMapSymbol = Symbol('sourceMap');