widget/windows/TaskbarTabPreview.h

   1 /* vim: se cin sw=2 ts=2 et : */
   2 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #ifndef __mozilla_widget_TaskbarTabPreview_h__
   9 #define __mozilla_widget_TaskbarTabPreview_h__
  10
  11 #include "nsITaskbarTabPreview.h"
  12 #include "TaskbarPreview.h"
  13
  14 namespace mozilla {
  15 namespace widget {
  16
  17 class TaskbarTabPreview : public nsITaskbarTabPreview, public TaskbarPreview {
  18   virtual ~TaskbarTabPreview();
  19
  20  public:
  21   TaskbarTabPreview(ITaskbarList4* aTaskbar,
  22                     nsITaskbarPreviewController* aController, HWND aHWND,
  23                     nsIDocShell* aShell);
  24   virtual nsresult Init() override;
  25
  26   NS_DECL_ISUPPORTS
  27   NS_DECL_NSITASKBARTABPREVIEW
  28   NS_FORWARD_NSITASKBARPREVIEW(TaskbarPreview::)
  29
  30  private:
  31   virtual nsresult ShowActive(bool active);
  32   virtual HWND& PreviewWindow();
  33   virtual LRESULT WndProc(UINT nMsg, WPARAM wParam, LPARAM lParam);
  34   static LRESULT CALLBACK GlobalWndProc(HWND hWnd, UINT nMsg, WPARAM wParam,
  35                                         LPARAM lParam);
  36
  37   virtual nsresult UpdateTaskbarProperties();
  38   virtual nsresult Enable();
  39   virtual nsresult Disable();
  40   virtual void DetachFromNSWindow();
  41
  42   // WindowHook procedure for hooking mWnd
  43   static bool MainWindowHook(void* aContext, HWND hWnd, UINT nMsg,
  44                              WPARAM wParam, LPARAM lParam, LRESULT* aResult);
  45
  46   // Bug 520807 - we need to update the proxy window style based on the main
  47   // window's style to workaround a bug with the way the DWM displays the
  48   // previews.
  49   void UpdateProxyWindowStyle();
  50
  51   nsresult UpdateTitle();
  52   nsresult UpdateIcon();
  53   nsresult UpdateNext();
  54
  55   // Handle to the toplevel proxy window
  56   HWND mProxyWindow;
  57   nsString mTitle;
  58   nsCOMPtr<imgIContainer> mIconImage;
  59   // Cached Windows icon of mIconImage
  60   HICON mIcon;
  61   // Preview that follows this preview in the taskbar (left-to-right order)
  62   nsCOMPtr<nsITaskbarTabPreview> mNext;
  63   // True if this preview has been registered with the taskbar
  64   bool mRegistered;
  65 };
  66
  67 }  // namespace widget
  68 }  // namespace mozilla
  69
  70 #endif /* __mozilla_widget_TaskbarTabPreview_h__ */