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690 lines
21 KiB
690 lines
21 KiB
#include "priv.h"
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#include "sccls.h"
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#include "iface.h"
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#include "resource.h"
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#include "caggunk.h"
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#include "menuisf.h"
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#include "menubar.h"
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#include "menuband.h"
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#include "iaccess.h"
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#include "apithk.h"
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//=================================================================
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// Implementation of CMenuAgent
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//
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// The single global object of this class (g_menuagent) is the
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// manager of the message filter proc used to track mouse and
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// keyboard messages on behalf of CTrackPopupBar while a menu is
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// in a modal menu loop in TrackPopupMenu.
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//
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// We track these messages so we can pop out of the menu, behaving
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// as if the visual menu bar consisted of a homogeneous menu
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// object.
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//
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//=================================================================
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extern "C" void DumpMsg(LPCTSTR pszLabel, MSG * pmsg);
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struct CMenuAgent
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{
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public:
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HHOOK _hhookMsg;
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HWND _hwndSite; // hwnd to receive forwarded messages
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HWND _hwndParent;
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CTrackPopupBar * _ptpbar;
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IMenuPopup * _pmpParent;
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void* _pvContext;
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HANDLE _hEvent;
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BITBOOL _fEscHit: 1;
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// we need to keep track of whether the last selected
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// menu item was on a popup or not. we can do this by storing the
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// last WM_MENUSELECT flags
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UINT _uFlagsLastSelected;
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HMENU _hmenuLastSelected;
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POINT _ptLastMove;
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void Init(void* pvContext, CTrackPopupBar * ptpbar, IMenuPopup * pmpParent, HWND hwndParent, HWND hwndSite);
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void Reset(void* pvContext);
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void CancelMenu(void* pvContext);
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static LRESULT CALLBACK MsgHook(int nCode, WPARAM wParam, LPARAM lParam);
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//private:
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void _OnMenuSelect(HMENU hmenu, int i, UINT uFlags);
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BOOL _OnKey(WPARAM vkey);
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};
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// Just one of these, b/c we only need one message filter
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CMenuAgent g_menuagent = { 0 };
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/*----------------------------------------------------------
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Purpose: Initialize the message filter hook
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*/
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void CMenuAgent::Init(void* pvContext, CTrackPopupBar * ptpbar, IMenuPopup * pmpParent,
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HWND hwndParent, HWND hwndSite)
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{
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TraceMsg(TF_MENUBAND, "Initialize CMenuAgent");
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ASSERT(IS_VALID_READ_PTR(ptpbar, CTrackPopupBar));
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ASSERT(IS_VALID_CODE_PTR(pmpParent, IMenuPopup));
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ASSERT(IS_VALID_HANDLE(hwndSite, WND));
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if (_pvContext != pvContext)
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{
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// When switching contexts, we need to collapse the old menu. This keeps us from
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// hosing the menubands when switching from one browser to another.
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CancelMenu(_pvContext);
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ATOMICRELEASE(_ptpbar);
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ATOMICRELEASE(_pmpParent);
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_pvContext = pvContext;
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}
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pmpParent->SetSubMenu(ptpbar, TRUE);
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_hwndSite = hwndSite;
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_hwndParent = hwndParent;
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// Since the message hook wants to forward messages to the toolbar,
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// we need to ask the pager control to do this
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Pager_ForwardMouse(_hwndSite, TRUE);
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_pmpParent = pmpParent;
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_pmpParent->AddRef();
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_ptpbar = ptpbar;
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_ptpbar->AddRef();
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// HACKHACKHACKHACKHACK (lamadio)
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// On Windows 9x kernel can't handle the reentrancy problem where you have two hooks
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// in two separate processes. When one process looses focus, we collapse the Menu.
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// After that we remove our hook. Problem is: Between the Loosing focus and
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// removing the hook, the other IE process popped up a menu and installed a hook
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// the two hooks mutilate each other.
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if (IsOS(OS_WINDOWS))
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{
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ASSERT(_hEvent == NULL);
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_hEvent = OpenEventA(EVENT_ALL_ACCESS, FALSE, "Shell.MenuAgent");
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if (!_hEvent) //event routines return NULL on failure.
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// Don't need to use SHGetAllAccessSA since this
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// is Win9x-only code anyway
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_hEvent = CreateEventA(NULL, TRUE, TRUE, "Shell.MenuAgent");
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if (_hEvent)
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WaitForSingleObject(_hEvent, INFINITE);
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}
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if (NULL == _hhookMsg)
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{
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if (_hEvent)
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ResetEvent(_hEvent);
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_hhookMsg = SetWindowsHookEx(WH_MSGFILTER, MsgHook, HINST_THISDLL, 0);
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if (!_hhookMsg && _hEvent)
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{
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SetEvent(_hEvent);
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CloseHandle(_hEvent);
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_hEvent = NULL;
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}
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}
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_fEscHit = FALSE;
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GetCursorPos(&_ptLastMove);
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}
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/*----------------------------------------------------------
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Purpose: Reset the menu agent; no longer track mouse and keyboard
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messages. The menuband calls this when it exits menu mode.
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*/
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void CMenuAgent::Reset(void* pvContext)
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{
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if (_pvContext == pvContext)
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{
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_pmpParent->SetSubMenu(_ptpbar, FALSE);
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// The only time to not send MPOS_FULLCANCEL is if the escape
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// key caused the menu to terminate.
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if ( !_fEscHit )
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_pmpParent->OnSelect(MPOS_FULLCANCEL);
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// Eat any mouse-down/up sequence left in the queue. This is how
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// we keep the toolbar from getting a mouse-down if the user
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// clicks on the same menuitem as what is currently popped down.
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// (E.g., click File, then click File again. W/o this, the menu
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// would never toggle up.)
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MSG msg;
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while (PeekMessage(&msg, _hwndSite, WM_LBUTTONDOWN, WM_LBUTTONUP, PM_REMOVE))
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; // Do nothing
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Pager_ForwardMouse(_hwndSite, FALSE);
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_hwndSite = NULL;
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_hwndParent = NULL;
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ATOMICRELEASE(_pmpParent);
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ATOMICRELEASE(_ptpbar);
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if (_hhookMsg)
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{
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TraceMsg(TF_MENUBAND, "CMenuAgent: Hook removed");
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UnhookWindowsHookEx(_hhookMsg);
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_hhookMsg = NULL;
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if (_hEvent)
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{
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SetEvent(_hEvent);
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CloseHandle(_hEvent);
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_hEvent = NULL;
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}
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}
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_pvContext = NULL;
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}
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}
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/*----------------------------------------------------------
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Purpose: Make the menu go away
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*/
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void CMenuAgent::CancelMenu(void* pvContext)
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{
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if (_pvContext == pvContext)
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{
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if (_hwndParent)
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{
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ASSERT(IS_VALID_HANDLE(_hwndParent, WND));
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TraceMsg(TF_MENUBAND, "Sending cancel mode to menu");
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// Use PostMessage so USER32 doesn't RIP on us in
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// MsgHook when it returns from the WM_MOUSEMOVE
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// that triggered this code path in the first place.
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PostMessage(_hwndParent, WM_CANCELMODE, 0, 0);
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// Disguise this as if the escape key was hit,
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// since this is called when the mouse hovers over
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// another menu sibling.
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_fEscHit = TRUE;
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_pmpParent->SetSubMenu(_ptpbar, FALSE);
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}
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}
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}
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// store away the identity of the selected menu item.
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// if uFlags & MF_POPUP then i is the index.
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// otherwise it's the command and we need to convert it to the index.
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// we store index always because some popups don't have ids
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void CMenuAgent::_OnMenuSelect(HMENU hmenu, int i, UINT uFlags)
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{
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_uFlagsLastSelected = uFlags;
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_hmenuLastSelected = hmenu;
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}
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BOOL CMenuAgent::_OnKey(WPARAM vkey)
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{
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//
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// If the menu window is RTL mirrored, then the arrow keys should
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// be mirrored to reflect proper cursor movement. [samera]
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//
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if (IS_WINDOW_RTL_MIRRORED(_hwndSite))
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{
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switch (vkey)
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{
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case VK_LEFT:
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vkey = VK_RIGHT;
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break;
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case VK_RIGHT:
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vkey = VK_LEFT;
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break;
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}
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}
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switch (vkey)
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{
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case VK_RIGHT:
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if (!_hmenuLastSelected || !(_uFlagsLastSelected & MF_POPUP) || (_uFlagsLastSelected & MF_DISABLED) )
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{
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// if the currently selected item does not have a cascade, then
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// we need to cancel out of all of this and tell the top menu bar to go right
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_pmpParent->OnSelect(MPOS_SELECTRIGHT);
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}
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break;
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case VK_LEFT:
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if (!_hmenuLastSelected || _hmenuLastSelected == _ptpbar->GetPopupMenu()) {
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// if the currently selected menu item is in our top level menu,
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// then we need to cancel out of all this menu loop and tell the top menu bar
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// to go left
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_pmpParent->OnSelect(MPOS_SELECTLEFT);
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}
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break;
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default:
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return FALSE;
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}
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return TRUE;
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}
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/*----------------------------------------------------------
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Purpose: Message hook used to track keyboard and mouse messages
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while in a TrackPopupMenu modal loop.
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*/
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LRESULT CMenuAgent::MsgHook(int nCode, WPARAM wParam, LPARAM lParam)
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{
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LRESULT lRet = 0;
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MSG * pmsg = (MSG *)lParam;
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switch (nCode)
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{
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case MSGF_MENU:
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#ifdef DEBUG
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if (IsFlagSet(g_dwDumpFlags, DF_MSGHOOK))
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DumpMsg(TEXT("MsgHook"), pmsg);
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#endif
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switch (pmsg->message)
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{
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case WM_MENUSELECT:
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// keep track of the items as the are selected.
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g_menuagent._OnMenuSelect(GET_WM_MENUSELECT_HMENU(pmsg->wParam, pmsg->lParam),
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GET_WM_MENUSELECT_CMD(pmsg->wParam, pmsg->lParam),
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GET_WM_MENUSELECT_FLAGS(pmsg->wParam, pmsg->lParam));
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break;
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case WM_LBUTTONDOWN:
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case WM_RBUTTONDOWN:
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// Since we've received this msg, any previous escapes
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// (like escaping out of a cascaded menu) should be cleared
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// to prevent a false reason for termination.
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g_menuagent._fEscHit = FALSE;
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break;
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case WM_KEYDOWN:
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if (g_menuagent._OnKey(pmsg->wParam))
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break;
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case WM_SYSKEYDOWN:
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g_menuagent._fEscHit = (VK_ESCAPE == pmsg->wParam);
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break;
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case WM_MOUSEMOVE:
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// HACKHACK (isn't all of this a hack?): ignore zero-move
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// mouse moves, so the mouse does not contend with the keyboard.
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POINT pt;
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// In screen coords....
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pt.x = GET_X_LPARAM(pmsg->lParam);
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pt.y = GET_Y_LPARAM(pmsg->lParam);
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if (g_menuagent._ptLastMove.x == pt.x &&
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g_menuagent._ptLastMove.y == pt.y)
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{
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TraceMsg(TF_MENUBAND, "CMenuAgent: skipping dup mousemove");
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break;
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}
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g_menuagent._ptLastMove = pt;
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// Since we got a WM_MOUSEMOVE, we need to tell the Menuband global message hook.
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// We need to do this because this message hook steels all of the messages, and
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// the Menuband message hook never updates it's internal cache for removing duplicate
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// WM_MOUSEMOVE messages which cause problems as outlined in CMsgFilter::_HandleMouseMessages
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GetMessageFilter()->AcquireMouseLocation();
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// Forward the mouse moves to the toolbar so the toolbar still
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// has a chance to hot track. Must convert the points to the
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// toolbar's client space.
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ScreenToClient(g_menuagent._hwndSite, &pt);
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SendMessage(g_menuagent._hwndSite, pmsg->message, pmsg->wParam,
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MAKELPARAM(pt.x, pt.y));
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break;
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}
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break;
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default:
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if (0 > nCode)
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return CallNextHookEx(g_menuagent._hhookMsg, nCode, wParam, lParam);
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break;
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}
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// Pass it on to the next hook in the chain
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if (0 == lRet)
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lRet = CallNextHookEx(g_menuagent._hhookMsg, nCode, wParam, lParam);
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return lRet;
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}
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//=================================================================
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// Implementation of a menu deskbar object that uses TrackPopupMenu.
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//
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// This object uses traditional USER32 menus (via TrackPopupMenu)
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// to implement menu behavior. It uses the CMenuAgent object to
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// help get its work done. Since the menu deskbar site (_punkSite)
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// sits in a modal loop while any menu is up, it needs to know when
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// to quit its loop. The child object accomplishes this by sending
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// an OnSelect(MPOS_FULLCANCEL).
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//
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// The only time that TrackPopupMenu returns (but we don't want to
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// send an MPOS_FULLCANCEL) is if it's b/c the Escape key was hit.
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// This just means cancel the current level. Returning from Popup
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// is sufficient for this case. Otherwise, all other cases of
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// returning from TrackPopupMenu means we send a MPOS_FULLCANCEL.
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//
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// Summary:
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//
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// 1) User clicked outside the menu. This is a full cancel.
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// 2) User hit the Alt key. This is a full cancel.
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// 3) User hit the Esc key. This just cancels the current level.
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// (TrackPopupMenu handles this fine. No notification needs
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// to be sent b/c we want the top-level menu to stay in its
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// modal loop.)
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// 4) User selected a menu item. This is a full cancel.
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//
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//=================================================================
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#undef THISCLASS
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#undef SUPERCLASS
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#define SUPERCLASS CMenuDeskBar
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// Constructor
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CTrackPopupBar::CTrackPopupBar(void *pvContext, int id, HMENU hmenu, HWND hwnd)
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{
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_hmenu = hmenu;
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_hwndParent = hwnd;
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_id = id;
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_pvContext = pvContext;
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_nMBIgnoreNextDeselect = RegisterWindowMessage(TEXT("CMBIgnoreNextDeselect"));
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}
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// Destructor
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CTrackPopupBar::~CTrackPopupBar()
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{
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SetSite(NULL);
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}
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STDMETHODIMP_(ULONG) CTrackPopupBar::AddRef()
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{
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return SUPERCLASS::AddRef();
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}
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STDMETHODIMP_(ULONG) CTrackPopupBar::Release()
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{
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return SUPERCLASS::Release();
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}
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STDMETHODIMP CTrackPopupBar::QueryInterface(REFIID riid, void **ppvObj)
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{
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static const QITAB qit[] = {
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QITABENT(CTrackPopupBar, IMenuPopup),
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QITABENT(CTrackPopupBar, IObjectWithSite),
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{ 0 },
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};
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HRESULT hres = QISearch(this, qit, riid, ppvObj);
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if (FAILED(hres))
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{
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hres = SUPERCLASS::QueryInterface(riid, ppvObj);
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}
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return hres;
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}
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/*----------------------------------------------------------
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Purpose: IServiceProvider::QueryService method
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*/
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STDMETHODIMP CTrackPopupBar::QueryService(REFGUID guidService, REFIID riid, void **ppvObj)
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{
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if (IsEqualGUID(guidService, SID_SMenuBandChild))
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{
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if (IsEqualIID(riid, IID_IAccessible))
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{
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HRESULT hres = E_OUTOFMEMORY;
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CAccessible* pacc = new CAccessible(_hmenu, _id);
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if (pacc)
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{
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hres = pacc->InitAcc();
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if (SUCCEEDED(hres))
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{
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hres = pacc->QueryInterface(riid, ppvObj);
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}
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pacc->Release();
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}
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return hres;
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}
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else
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return QueryInterface(riid, ppvObj);
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}
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else
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return SUPERCLASS::QueryService(guidService, riid, ppvObj);
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}
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/*----------------------------------------------------------
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Purpose: IMenuPopup::OnSelect method
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This allows the parent menubar to tell us when to
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bail out of the TrackPopupMenu
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*/
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STDMETHODIMP CTrackPopupBar::OnSelect(DWORD dwType)
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{
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switch (dwType)
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{
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case MPOS_CANCELLEVEL:
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case MPOS_FULLCANCEL:
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g_menuagent.CancelMenu(_pvContext);
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break;
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default:
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TraceMsg(TF_WARNING, "CTrackPopupBar doesn't handle this MPOS_ value: %d", dwType);
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break;
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}
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return S_OK;
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}
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/*----------------------------------------------------------
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Purpose: IMenuPopup::SetSubMenu method
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*/
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STDMETHODIMP CTrackPopupBar::SetSubMenu(IMenuPopup * pmp, BOOL bSet)
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{
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return E_NOTIMPL;
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}
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// HACKHACK: DO NOT TOUCH! This is the only way to select
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// the first item for a user menu. TrackMenuPopup by default does
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// not select the first item. We pump these messages to our window.
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// User snags these messages, and thinks the user pressed the down button
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// and selects the first item for us. The lParam is needed because Win95 gold
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// validated this message before using it. Another solution would be to listen
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// to WM_INITMENUPOPUP and look for the HWND of the menu. Then send that
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// window the private message MN_SELECTFIRSTVALIDITEM. But thats nasty compared
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// to this. - lamadio 1.5.99
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void CTrackPopupBar::SelectFirstItem()
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{
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HWND hwndFocus = GetFocus();
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// pulled the funny lparam numbers out of spy's butt.
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if (hwndFocus) {
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PostMessage(hwndFocus, WM_KEYDOWN, VK_DOWN, 0x11500001);
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PostMessage(hwndFocus, WM_KEYUP, VK_DOWN, 0xD1500001);
|
|
#ifdef UNIX
|
|
/* HACK HACK
|
|
* The above PostMessages were causing the second menu item
|
|
* to be selected if you access the menu from the keyboard.
|
|
* The following PostMessages will nullify the above effect.
|
|
* This is to make sure that menus in shdocvw work properly
|
|
* with user32 menus.
|
|
*/
|
|
PostMessage(hwndFocus, WM_KEYDOWN, VK_UP, 0x11500001);
|
|
PostMessage(hwndFocus, WM_KEYUP, VK_UP, 0xD1500001);
|
|
#endif /* UNIX */
|
|
}
|
|
}
|
|
|
|
DWORD GetBuildNumber()
|
|
{
|
|
OSVERSIONINFO osvi;
|
|
osvi.dwOSVersionInfoSize = sizeof(osvi);
|
|
if (GetVersionEx(&osvi))
|
|
return osvi.dwBuildNumber;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/*----------------------------------------------------------
|
|
Purpose: IMenuPopup::Popup method
|
|
|
|
Invoke the menu.
|
|
*/
|
|
STDMETHODIMP CTrackPopupBar::Popup(POINTL *ppt, RECTL* prcExclude, DWORD dwFlags)
|
|
{
|
|
static dwBuildNumber = GetBuildNumber();
|
|
ASSERT(IS_VALID_READ_PTR(ppt, POINTL));
|
|
ASSERT(NULL == prcExclude || IS_VALID_READ_PTR(prcExclude, RECTL));
|
|
ASSERT(IS_VALID_CODE_PTR(_pmpParent, IMenuPopup));
|
|
|
|
// We must be able to talk to the parent menu bar
|
|
if (NULL == _pmpParent)
|
|
return E_FAIL;
|
|
|
|
ASSERT(IS_VALID_HANDLE(_hmenu, MENU));
|
|
ASSERT(IS_VALID_CODE_PTR(_punkSite, IUnknown));
|
|
|
|
HMENU hmenu = GetSubMenu(_hmenu, _id);
|
|
HWND hwnd;
|
|
TPMPARAMS tpm;
|
|
TPMPARAMS * ptpm = NULL;
|
|
|
|
// User32 does not want to fix this for compatibility reasons,
|
|
// but TrackPopupMenu does not snap to the nearest monitor on Single and Multi-Mon
|
|
// systems. This has the side effect that if we pass a non-visible coordinate, then
|
|
// User places menu at a random location on screen. So instead, we're going to bias
|
|
// the point to the monitor.
|
|
|
|
MONITORINFO mi = {0};
|
|
mi.cbSize = sizeof(mi);
|
|
|
|
HMONITOR hMonitor = MonitorFromPoint(*((POINT*)ppt), MONITOR_DEFAULTTONEAREST);
|
|
GetMonitorInfo(hMonitor, &mi);
|
|
|
|
if (ppt->x >= mi.rcMonitor.right)
|
|
ppt->x = mi.rcMonitor.right;
|
|
|
|
if (ppt->y >= mi.rcMonitor.bottom)
|
|
ppt->y = mi.rcMonitor.bottom;
|
|
|
|
if (ppt->x <= mi.rcMonitor.left)
|
|
ppt->x = mi.rcMonitor.left;
|
|
|
|
if (ppt->y <= mi.rcMonitor.top)
|
|
ppt->y = mi.rcMonitor.top;
|
|
|
|
|
|
if (prcExclude)
|
|
{
|
|
tpm.cbSize = SIZEOF(tpm);
|
|
tpm.rcExclude = *((LPRECT)prcExclude);
|
|
ptpm = &tpm;
|
|
}
|
|
|
|
// The forwarding code in CShellBrowser::_ShouldForwardMenu
|
|
// and CDocObjectHost::_ShouldForwardMenu expects the first
|
|
// WM_MENUSELECT to be sent for the top-level menu item.
|
|
//
|
|
// We need to fake an initial menu select on the top menu band
|
|
// to mimic USER and satisfy this expectation.
|
|
//
|
|
UINT uMSFlags = MF_POPUP;
|
|
SendMessage(_hwndParent, WM_MENUSELECT, MAKEWPARAM(_id, uMSFlags), (LPARAM)_hmenu);
|
|
|
|
SendMessage(_hwndParent, _nMBIgnoreNextDeselect, NULL, NULL);
|
|
|
|
// Initialize the menu agent
|
|
IUnknown_GetWindow(_punkSite, &hwnd);
|
|
|
|
VARIANTARG v = {0};
|
|
UINT uFlags = TPM_VERTICAL | TPM_TOPALIGN;
|
|
UINT uAnimateFlags = 0;
|
|
if (SUCCEEDED(IUnknown_Exec(_punkSite, &CGID_MENUDESKBAR, MBCID_GETSIDE, 0, NULL, &v))) {
|
|
if (v.vt == VT_I4 &&
|
|
(v.lVal == MENUBAR_RIGHT ||
|
|
v.lVal == MENUBAR_LEFT))
|
|
{
|
|
uFlags = TPM_TOPALIGN;
|
|
}
|
|
|
|
switch (v.lVal)
|
|
{
|
|
case MENUBAR_LEFT: uAnimateFlags = TPM_HORNEGANIMATION;
|
|
break;
|
|
case MENUBAR_RIGHT: uAnimateFlags = TPM_HORPOSANIMATION;
|
|
break;
|
|
case MENUBAR_TOP: uAnimateFlags = TPM_VERNEGANIMATION;
|
|
break;
|
|
case MENUBAR_BOTTOM: uAnimateFlags = TPM_VERPOSANIMATION;
|
|
break;
|
|
}
|
|
}
|
|
|
|
g_menuagent.Init(_pvContext, this, _pmpParent, _hwndParent, hwnd);
|
|
|
|
ASSERT(IS_VALID_HANDLE(hmenu, MENU));
|
|
if (dwFlags & MPPF_INITIALSELECT)
|
|
SelectFirstItem();
|
|
|
|
// This feature only works on build 1794 or greater.
|
|
if (g_bRunOnNT5 && dwBuildNumber >= 1794 && dwFlags & MPPF_NOANIMATE)
|
|
uFlags |= TPM_NOANIMATION;
|
|
|
|
#ifndef MAINWIN
|
|
|
|
if (g_bRunOnMemphis || g_bRunOnNT5)
|
|
uFlags |= uAnimateFlags;
|
|
|
|
TrackPopupMenuEx(hmenu, uFlags,
|
|
ppt->x, ppt->y, _hwndParent, ptpm);
|
|
#else
|
|
// Current MainWin's implementation of TrackPopupMenuEx is buggy.
|
|
// I failed to fix it, so I replaced the call by TrackPopupMenu,
|
|
// that provides partial functionality.
|
|
// Hopefully, jluu will be able to fix it.
|
|
TrackPopupMenu(hmenu, uFlags, ppt->x, ppt->y, 0, _hwndParent,
|
|
&ptpm->rcExclude);
|
|
#endif
|
|
|
|
// Tell the parent that the menu is now gone
|
|
SendMessage(_hwndParent, WM_MENUSELECT, MAKEWPARAM(0, 0xFFFF), NULL);
|
|
|
|
g_menuagent.Reset(_pvContext);
|
|
|
|
return S_FALSE;
|
|
}
|