base/shell/rshell/CMenuFocusManager.h

   1 /*
   2 * Shell Menu Band
   3 *
   4 * Copyright 2014 David Quintana
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License as published by the Free Software Foundation; either
   9 * version 2.1 of the License, or (at your option) any later version.
  10 *
  11 * This library is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * Lesser General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU Lesser General Public
  17 * License along with this library; if not, write to the Free Software
  18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19 */
  20 #pragma once
  21
  22 class CMenuBand;
  23
  24 class CMenuFocusManager :
  25     public CComCoClass<CMenuFocusManager>,
  26     public CComObjectRootEx<CComMultiThreadModelNoCS>
  27 {
  28 private:
  29     static DWORD TlsIndex;
  30
  31     static CMenuFocusManager * GetManager();
  32
  33 public:
  34     static CMenuFocusManager * AcquireManager();
  35
  36     static void ReleaseManager(CMenuFocusManager * obj);
  37
  38 private:
  39     static LRESULT CALLBACK s_GetMsgHook(INT nCode, WPARAM wParam, LPARAM lParam);
  40
  41 private:
  42     CMenuBand * m_currentBand;
  43     HWND m_currentFocus;
  44     HHOOK m_hHook;
  45     DWORD m_threadId;
  46
  47     // TODO: make dynamic
  48 #define MAX_RECURSE 20
  49     CMenuBand* m_bandStack[MAX_RECURSE];
  50     int m_bandCount;
  51
  52     HRESULT PushToArray(CMenuBand * item);
  53     HRESULT PopFromArray(CMenuBand ** pItem);
  54     HRESULT PeekArray(CMenuBand ** pItem);
  55
  56 protected:
  57     CMenuFocusManager();
  58     ~CMenuFocusManager();
  59
  60 public:
  61
  62     DECLARE_NOT_AGGREGATABLE(CMenuFocusManager)
  63     DECLARE_PROTECT_FINAL_CONSTRUCT()
  64     BEGIN_COM_MAP(CMenuFocusManager)
  65     END_COM_MAP()
  66
  67     LRESULT GetMsgHook(INT nCode, WPARAM wParam, LPARAM lParam);
  68     HRESULT PlaceHooks(HWND window);
  69     HRESULT RemoveHooks(HWND window);
  70     HRESULT UpdateFocus(CMenuBand * newBand);
  71
  72 public:
  73     HRESULT PushMenu(CMenuBand * mb);
  74     HRESULT PopMenu(CMenuBand * mb);
  75 };