DevTools: Decouple shortcuts from actions, introduce shortcut contexts

Source/devtools/front_end/SettingsScreen.js

 /*
  * Copyright (C) 2013 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 644 matching lines @@
 }
 
 /**
  * @constructor
  * @implements {WebInspector.ActionDelegate}
  */
 WebInspector.SettingsController.SettingsScreenActionDelegate = function() { }
 
 WebInspector.SettingsController.SettingsScreenActionDelegate.prototype = {
     /**
+     * @param {!WebInspector.Context} context
      * @return {boolean}
      */
-    handleAction: function()
+    handleAction: function(context)
     {
-        WebInspector.settingsController.showSettingsScreen(WebInspector.SettingsScreen.Tabs.General);
+        if (!context.flavor(WebInspector.Dialog))
+            WebInspector.settingsController.showSettingsScreen(WebInspector.SettingsScreen.Tabs.General);
         return true;
     }
 }
 
 /**
  * @constructor
  * @extends {WebInspector.Object}
  * @param {function(!Element, string, ?string)} itemRenderer
  */
 WebInspector.SettingsList = function(columns, itemRenderer)
@@ skipping 373 matching lines @@
             var inputElement = this._addInputElements[columnId];
             inputElement.value = "";
         }
     },
 
     __proto__: WebInspector.SettingsList.prototype
 }
 
 /** @type {!WebInspector.SettingsController} */
 WebInspector.settingsController;