DevTools: introduce multitarget model listeners

Source/devtools/front_end/components/DOMBreakpointsSidebarPane.js

 /*
  * Copyright (C) 2011 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 13 matching lines @@
  * 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.
  */
 
 /**
  * @constructor
  * @extends {WebInspector.NativeBreakpointsSidebarPane}
- * @implements {WebInspector.TargetManager.Observer}
  */
 WebInspector.DOMBreakpointsSidebarPane = function()
 {
     WebInspector.NativeBreakpointsSidebarPane.call(this, WebInspector.UIString("DOM Breakpoints"));
 
     this._breakpointElements = {};
 
     this._breakpointTypes = {
         SubtreeModified: "subtree-modified",
         AttributeModified: "attribute-modified",
         NodeRemoved: "node-removed"
     };
     this._breakpointTypeLabels = {};
     this._breakpointTypeLabels[this._breakpointTypes.SubtreeModified] = WebInspector.UIString("Subtree Modified");
     this._breakpointTypeLabels[this._breakpointTypes.AttributeModified] = WebInspector.UIString("Attribute Modified");
     this._breakpointTypeLabels[this._breakpointTypes.NodeRemoved] = WebInspector.UIString("Node Removed");
 
     this._contextMenuLabels = {};
     this._contextMenuLabels[this._breakpointTypes.SubtreeModified] = WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Subtree modifications" : "Subtree Modifications");
     this._contextMenuLabels[this._breakpointTypes.AttributeModified] = WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Attributes modifications" : "Attributes Modifications");
     this._contextMenuLabels[this._breakpointTypes.NodeRemoved] = WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Node removal" : "Node Removal");
 
-    WebInspector.targetManager.observeTargets(this);
+    WebInspector.targetManager.addModelListener(WebInspector.ResourceTreeModel, WebInspector.ResourceTreeModel.EventTypes.InspectedURLChanged, this._inspectedURLChanged, this);
+    WebInspector.targetManager.addModelListener(WebInspector.DOMModel, WebInspector.DOMModel.Events.NodeRemoved, this._nodeRemoved, this);
 }
 
 WebInspector.DOMBreakpointsSidebarPane.prototype = {
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    targetAdded: function(target)
-    {
-        target.resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.InspectedURLChanged, this._inspectedURLChanged, this);
-        target.domModel.addEventListener(WebInspector.DOMModel.Events.NodeRemoved, this._nodeRemoved, this);
-    },
-
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    targetRemoved: function(target)
-    {
-        target.resourceTreeModel.removeEventListener(WebInspector.ResourceTreeModel.EventTypes.InspectedURLChanged, this._inspectedURLChanged, this);
-        target.domModel.removeEventListener(WebInspector.DOMModel.Events.NodeRemoved, this._nodeRemoved, this);
-    },
-
     _inspectedURLChanged: function(event)
     {
         this._breakpointElements = {};
         this.reset();
         var url = /** @type {string} */ (event.data);
         this._inspectedURL = url.removeURLFragment();
     },
 
     /**
      * @param {!WebInspector.DOMNode} node
@@ skipping 364 matching lines @@
             this.element.appendChild(this.bodyElement);
     },
 
     __proto__: WebInspector.SidebarPane.prototype
 }
 
 /**
  * @type {!WebInspector.DOMBreakpointsSidebarPane}
  */
 WebInspector.domBreakpointsSidebarPane;