[DevTools] Add preferred size to WebInspector.View.

Source/devtools/front_end/TabbedPane.js

 /*
  * Copyright (C) 2010 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 65 matching lines @@
     {
         this._shrinkableTabs = shrinkableTabs;
     },
 
     /**
      * @type {boolean} verticalTabLayout
      */
     set verticalTabLayout(verticalTabLayout)
     {
         this._verticalTabLayout = verticalTabLayout;
-        this.invalidateMinimumSize();
+        this.invalidateConstraints();
     },
 
     /**
      * @type {boolean} closeableTabs
      */
     set closeableTabs(closeableTabs)
     {
         this._closeableTabs = closeableTabs;
     },
 
@@ skipping 272 matching lines @@
     headerResized: function()
     {
         this._updateTabElements();
     },
 
     wasShown: function()
     {
         var effectiveTab = this._currentTab || this._tabsHistory[0];
         if (effectiveTab)
             this.selectTab(effectiveTab.id);
-        this.invalidateMinimumSize();
+        this.invalidateConstraints();
     },
 
     /**
-     * @return {!Size}
+     * @return {!Constraints}
      */
-    calculateMinimumSize: function()
+    calculateConstraints: function()
     {
-        var size = WebInspector.VBox.prototype.calculateMinimumSize.call(this);
+        var constraints = WebInspector.VBox.prototype.calculateConstraints.call(this);
+        var minContentConstraints = new Constraints(new Size(0, 0), new Size(50, 50));
+        constraints = constraints.widthToMax(minContentConstraints).heightToMax(minContentConstraints);
         if (this._verticalTabLayout)
-            size.width += this._headerElement.offsetWidth;
+            constraints = constraints.addWidth(new Constraints(new Size(this._headerElement.offsetWidth, 0)));
         else
-            size.height += this._headerElement.offsetHeight;
-        return size;
+            constraints = constraints.addHeight(new Constraints(new Size(0, this._headerElement.offsetHeight)));
+        return constraints;
     },
 
     _updateTabElements: function()
     {
         WebInspector.invokeOnceAfterBatchUpdate(this, this._innerUpdateTabElements);
     },
 
     /**
      * @param {string} text
      */
@@ skipping 725 matching lines @@
     {
         if (this._views.contains(id))
             return /** @type {!WebInspector.View} */ (this._views.get(id));
         var view = this._extensions[id] ? /** @type {!WebInspector.View} */ (this._extensions[id].instance()) : null;
         this._views.put(id, view);
         if (this._viewCallback && view)
             this._viewCallback(id, view);
         return view;
     }
 }