DevTools: Reuse _showSourceLocation for execution line changes handling in sources panel

Source/devtools/front_end/CodeMirrorTextEditor.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 742 matching lines @@
                 this._codeMirror.removeLineClass(lineNumber, "wrap", classes[i]);
         }
     },
 
     /**
      * @param {number} lineNumber
      */
     setExecutionLine: function(lineNumber)
     {
         this._executionLine = this._codeMirror.getLineHandle(lineNumber);
+        if (!this._executionLine)

[lushnikov, 2014/03/18 13:22:04]

what is this needed for?

+            return;
         this._codeMirror.addLineClass(this._executionLine, "wrap", "cm-execution-line");
     },
 
     clearExecutionLine: function()
     {
         if (this._executionLine)
             this._codeMirror.removeLineClass(this._executionLine, "wrap", "cm-execution-line");
         delete this._executionLine;
     },
 
@@ skipping 943 matching lines @@
     var backgroundColorRule = backgroundColor ? ".CodeMirror .CodeMirror-selected { background-color: " + backgroundColor + ";}" : "";
     var foregroundColor = InspectorFrontendHost.getSelectionForegroundColor();
     var foregroundColorRule = foregroundColor ? ".CodeMirror .CodeMirror-selectedtext:not(.CodeMirror-persist-highlight) { color: " + foregroundColor + "!important;}" : "";
     if (!foregroundColorRule && !backgroundColorRule)
         return;
 
     var style = document.createElement("style");
     style.textContent = backgroundColorRule + foregroundColorRule;
     document.head.appendChild(style);
 })();