Save and restore State for ShellWindows, including panels

chrome/browser/ui/extensions/native_app_window.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_EXTENSIONS_NATIVE_APP_WINDOW_H_
 #define CHROME_BROWSER_UI_EXTENSIONS_NATIVE_APP_WINDOW_H_
 
 #include "chrome/browser/ui/base_window.h"
 #include "chrome/browser/ui/extensions/shell_window.h"
 #include "chrome/browser/ui/web_contents_modal_dialog_host.h"
 #include "ui/gfx/insets.h"
 
 // This is an interface to a native implementation of a shell window, used for
 // new-style packaged apps. Shell windows contain a web contents, but no tabs
 // or URL bar.
 class NativeAppWindow : public BaseWindow, public WebContentsModalDialogHost {
  public:
   // Used by ShellWindow to instantiate the platform-specific ShellWindow code.
   static NativeAppWindow* Create(ShellWindow* window,
                                  const ShellWindow::CreateParams& params);
 
   // Called when the draggable regions are changed.
   virtual void UpdateDraggableRegions(
       const std::vector<extensions::DraggableRegion>& regions) = 0;
 
   virtual void SetFullscreen(bool fullscreen) = 0;
   virtual bool IsFullscreenOrPending() const = 0;
 
+  // Returns true if the window is a panel that has been detached.
+  virtual bool IsDetached() const = 0;
+
   // Called when the icon of the window changes.
   virtual void UpdateWindowIcon() = 0;
 
   // Called when the title of the window changes.
   virtual void UpdateWindowTitle() = 0;
 
   // Allows the window to handle unhandled keyboard messages coming back from
   // the renderer.
   virtual void HandleKeyboardEvent(
       const content::NativeWebKeyboardEvent& event) = 0;
 
   // TODO(jianli): once http://crbug.com/123007 is fixed, we'll no longer need
   // this.
   virtual void RenderViewHostChanged() = 0;
 
   // Returns the difference between the window bounds (including titlebar and
   // borders) and the content bounds, if any.
   virtual gfx::Insets GetFrameInsets() const = 0;
 
   virtual ~NativeAppWindow() {}
 };
 
 #endif  // CHROME_BROWSER_UI_EXTENSIONS_NATIVE_APP_WINDOW_H_