ipc/glue/WindowsMessageLoop.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef IPC_GLUE_WINDOWSMESSAGELOOP_H
   8 #define IPC_GLUE_WINDOWSMESSAGELOOP_H
   9
  10 // This file is only meant to compile on windows
  11 #include <windows.h>
  12
  13 #include "nsISupportsImpl.h"
  14
  15 namespace mozilla {
  16 namespace ipc {
  17 namespace windows {
  18
  19 void InitUIThread();
  20
  21 class DeferredMessage {
  22  public:
  23   MOZ_COUNTED_DEFAULT_CTOR(DeferredMessage)
  24
  25   MOZ_COUNTED_DTOR_VIRTUAL(DeferredMessage)
  26
  27   virtual void Run() = 0;
  28 };
  29
  30 // Uses CallWndProc to deliver a message at a later time. Messages faked with
  31 // this class must not have pointers in their wParam or lParam members as they
  32 // may be invalid by the time the message actually runs.
  33 class DeferredSendMessage : public DeferredMessage {
  34  public:
  35   DeferredSendMessage(HWND aHWnd, UINT aMessage, WPARAM aWParam, LPARAM aLParam)
  36       : hWnd(aHWnd), message(aMessage), wParam(aWParam), lParam(aLParam) {}
  37
  38   virtual void Run();
  39
  40  protected:
  41   HWND hWnd;
  42   UINT message;
  43   WPARAM wParam;
  44   LPARAM lParam;
  45 };
  46
  47 // Uses RedrawWindow to fake several painting-related messages. Flags passed
  48 // to the constructor go directly to RedrawWindow.
  49 class DeferredRedrawMessage : public DeferredMessage {
  50  public:
  51   DeferredRedrawMessage(HWND aHWnd, UINT aFlags) : hWnd(aHWnd), flags(aFlags) {}
  52
  53   virtual void Run();
  54
  55  private:
  56   HWND hWnd;
  57   UINT flags;
  58 };
  59
  60 // Uses UpdateWindow to generate a WM_PAINT message if needed.
  61 class DeferredUpdateMessage : public DeferredMessage {
  62  public:
  63   explicit DeferredUpdateMessage(HWND aHWnd);
  64
  65   virtual void Run();
  66
  67  private:
  68   HWND mWnd;
  69   RECT mUpdateRect;
  70 };
  71
  72 // This class duplicates a string that may exist in the lParam member of the
  73 // message.
  74 class DeferredSettingChangeMessage : public DeferredSendMessage {
  75  public:
  76   DeferredSettingChangeMessage(HWND aHWnd, UINT aMessage, WPARAM aWParam,
  77                                LPARAM aLParam);
  78
  79   ~DeferredSettingChangeMessage();
  80
  81  private:
  82   wchar_t* lParamString;
  83 };
  84
  85 // This class uses SetWindowPos to fake various size-related messages. Flags
  86 // passed to the constructor go straight through to SetWindowPos.
  87 class DeferredWindowPosMessage : public DeferredMessage {
  88  public:
  89   DeferredWindowPosMessage(HWND aHWnd, LPARAM aLParam,
  90                            bool aForCalcSize = false, WPARAM aWParam = 0);
  91
  92   virtual void Run();
  93
  94  private:
  95   WINDOWPOS windowPos;
  96 };
  97
  98 // This class duplicates a data buffer for a WM_COPYDATA message.
  99 class DeferredCopyDataMessage : public DeferredSendMessage {
 100  public:
 101   DeferredCopyDataMessage(HWND aHWnd, UINT aMessage, WPARAM aWParam,
 102                           LPARAM aLParam);
 103
 104   ~DeferredCopyDataMessage();
 105
 106  private:
 107   COPYDATASTRUCT copyData;
 108 };
 109
 110 class DeferredStyleChangeMessage : public DeferredMessage {
 111  public:
 112   DeferredStyleChangeMessage(HWND aHWnd, WPARAM aWParam, LPARAM aLParam);
 113
 114   virtual void Run();
 115
 116  private:
 117   HWND hWnd;
 118   int index;
 119   LONG_PTR style;
 120 };
 121
 122 class DeferredSetIconMessage : public DeferredSendMessage {
 123  public:
 124   DeferredSetIconMessage(HWND aHWnd, UINT aMessage, WPARAM aWParam,
 125                          LPARAM aLParam);
 126
 127   virtual void Run();
 128 };
 129
 130 } /* namespace windows */
 131 } /* namespace ipc */
 132 } /* namespace mozilla */
 133
 134 #endif /* IPC_GLUE_WINDOWSMESSAGELOOP_H */