DevTools: move off WebInspector.css/domModel in sidebars.

Source/devtools/front_end/ElementsPanel.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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
@@ skipping 1033 matching lines @@
         // Compact the selected crumb.
         compact(selectedCrumb);
         if (crumbsAreSmallerThanContainer())
             return;
 
         // Collapse the selected crumb as a last resort. Pass true to prevent coalescing.
         collapse(selectedCrumb, true);
     },
 
     /**
+     * @return {boolean}
+     */
+    _cssModelEnabledForSelectedNode: function()
+    {
+        if (!this.selectedDOMNode())
+            return true;
+        return this.selectedDOMNode().target().cssModel.isEnabled();
+    },
+
+    /**
      * @param {boolean=} forceUpdate
      */
     updateStyles: function(forceUpdate)
     {
-        if (!WebInspector.cssModel.isEnabled())
+        if (!this._cssModelEnabledForSelectedNode())
             return;
         var stylesSidebarPane = this.sidebarPanes.styles;
         var computedStylePane = this.sidebarPanes.computedStyle;
         if ((!stylesSidebarPane.isShowing() && !computedStylePane.isShowing()) || !stylesSidebarPane.needsUpdate)
             return;
 
         stylesSidebarPane.update(this.selectedDOMNode(), forceUpdate);
         stylesSidebarPane.needsUpdate = false;
     },
 
     updateMetrics: function()
     {
-        if (!WebInspector.cssModel.isEnabled())
+        if (!this._cssModelEnabledForSelectedNode())
             return;
         var metricsSidebarPane = this.sidebarPanes.metrics;
         if (!metricsSidebarPane.isShowing() || !metricsSidebarPane.needsUpdate)
             return;
 
         metricsSidebarPane.update(this.selectedDOMNode());
         metricsSidebarPane.needsUpdate = false;
     },
 
     updatePlatformFonts: function()
     {
-        if (!WebInspector.cssModel.isEnabled())
+        if (!this._cssModelEnabledForSelectedNode())
             return;
         var platformFontsSidebar = this.sidebarPanes.platformFonts;
         if (!platformFontsSidebar.isShowing() || !platformFontsSidebar.needsUpdate)
             return;
 
         platformFontsSidebar.update(this.selectedDOMNode());
         platformFontsSidebar.needsUpdate = false;
     },
 
     updateProperties: function()
@@ skipping 317 matching lines @@
             return;
 
         if (WebInspector.inspectElementModeController && WebInspector.inspectElementModeController.enabled()) {
             InspectorFrontendHost.bringToFront();
             WebInspector.inspectElementModeController.disable();
         }
 
         /** @type {!WebInspector.ElementsPanel} */ (WebInspector.inspectorView.panel("elements")).revealAndSelectNode(node);
     }
 }