Added wxPGProperty::OnValidationFailure(); needed it and some other tweaks to allow...

[wxWidgets.git] / src / msw / evtloop.cpp

diff --git a/src/msw/evtloop.cpp b/src/msw/evtloop.cpp
index ed84e41c760fb58e6f3d700b724c1285a87e635f..d09faae69f8a00b25b74cac953c4ed126f114c9c 100644 (file)
--- a/src/msw/evtloop.cpp
+++ b/src/msw/evtloop.cpp
@@ -6,7 +6,7 @@
 // Created:     01.06.01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Created:     01.06.01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>

-// License:     wxWindows license
+// License:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
-    #pragma implementation "evtloop.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -29,235 +25,284 @@
 #endif
 
 #ifndef WX_PRECOMP
 #endif
 
 #ifndef WX_PRECOMP

+    #if wxUSE_GUI
+        #include "wx/window.h"
+    #endif
+    #include "wx/app.h"

 #endif //WX_PRECOMP
 
 #include "wx/evtloop.h"
 #endif //WX_PRECOMP
 
 #include "wx/evtloop.h"

-#include "wx/window.h"
-#include "wx/app.h"
-#include "wx/tooltip.h"
-
+#include "wx/thread.h"
+#include "wx/except.h"
+#include "wx/ptr_scpd.h"

 #include "wx/msw/private.h"
 
 #include "wx/msw/private.h"
 

-#if wxUSE_THREADS
-    // define the array of MSG strutures
-    WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
-    // VS: this is a bit dirty - it duplicates same declaration in app.cpp
-    //     (and there's no WX_DEFINE_OBJARRAY for that reason - it is already
-    //     defined in app.cpp). 
-#endif
-
-// ----------------------------------------------------------------------------
-// wxEventLoopImpl
-// ----------------------------------------------------------------------------
-
-class WXDLLEXPORT wxEventLoopImpl
-{
-public:
-    // ctor
-    wxEventLoopImpl() { SetExitCode(0); }
-
-    // process a message
-    void ProcessMessage(MSG *msg);
+#if wxUSE_GUI
+    #include "wx/tooltip.h"
+    #if wxUSE_THREADS
+        // define the list of MSG strutures
+        WX_DECLARE_LIST(MSG, wxMsgList);

 
 

-    // generate an idle message, return TRUE if more idle time requested
-    bool SendIdleMessage();
+        #include "wx/listimpl.cpp"

 
 

-    // set/get the exit code
-    void SetExitCode(int exitcode) { m_exitcode = exitcode; }
-    int GetExitCode() const { return m_exitcode; }
+        WX_DEFINE_LIST(wxMsgList)
+    #endif // wxUSE_THREADS
+#endif //wxUSE_GUI

 
 

-private:
-    // preprocess a message, return TRUE if processed (i.e. no further
-    // dispatching required)
-    bool PreProcessMessage(MSG *msg);
-
-    // the exit code of the event loop
-    int m_exitcode;
-};
+#if wxUSE_BASE

 
 // ============================================================================
 
 // ============================================================================

-// wxEventLoopImpl implementation
+// wxMSWEventLoopBase implementation

 // ============================================================================
 
 // ----------------------------------------------------------------------------
 // ============================================================================
 
 // ----------------------------------------------------------------------------

-// wxEventLoopImpl message processing
+// ctor/dtor

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-void wxEventLoopImpl::ProcessMessage(MSG *msg)
+wxMSWEventLoopBase::wxMSWEventLoopBase()

 {
 {

-    // give us the chance to preprocess the message first
-    if ( !PreProcessMessage(msg) )
-    {
-        // if it wasn't done, dispatch it to the corresponding window
-        ::TranslateMessage(msg);
-        ::DispatchMessage(msg);
-    }
+    m_shouldExit = false;
+    m_exitcode = 0;
+}
+
+// ----------------------------------------------------------------------------
+// wxEventLoop message processing dispatching
+// ----------------------------------------------------------------------------
+
+bool wxMSWEventLoopBase::Pending() const
+{
+    MSG msg;
+    return ::PeekMessage(&msg, 0, 0, 0, PM_NOREMOVE) != 0;

 }
 
 }
 

-bool wxEventLoopImpl::PreProcessMessage(MSG *msg)
+bool wxMSWEventLoopBase::GetNextMessage(WXMSG* msg)

 {
 {

-    HWND hWnd = msg->hwnd;
-    wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hWnd);
+    wxCHECK_MSG( IsRunning(), false, _T("can't get messages if not running") );

 
 

-#if wxUSE_TOOLTIPS
-    // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
-    // popup the tooltip bubbles
-    if ( wndThis && (msg->message == WM_MOUSEMOVE) )
+    const BOOL rc = ::GetMessage(msg, NULL, 0, 0);
+
+    if ( rc == 0 )

     {
     {

-        wxToolTip *tt = wndThis->GetToolTip();
-        if ( tt )
-        {
-            tt->RelayEvent((WXMSG *)msg);
-        }
+        // got WM_QUIT
+        return false;

     }
     }

-#endif // wxUSE_TOOLTIPS

 
 

-    // try translations first; find the youngest window with a translation
-    // table.
-    wxWindow *wnd;
-    for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
+    if ( rc == -1 )

     {
     {

-        if ( wnd->MSWTranslateMessage((WXMSG *)msg) )
-            return TRUE;
+        // should never happen, but let's test for it nevertheless
+        wxLogLastError(wxT("GetMessage"));
+
+        // still break from the loop
+        return false;

     }
 
     }
 

-    // Anyone for a non-translation message? Try youngest descendants first.
-    for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
+    return true;
+}
+
+int wxMSWEventLoopBase::GetNextMessageTimeout(WXMSG *msg, unsigned long timeout)
+{
+    // MsgWaitForMultipleObjects() won't notice any input which was already
+    // examined (e.g. using PeekMessage()) but not yet removed from the queue
+    // so we need to remove any immediately messages manually
+    //
+    // NB: using MsgWaitForMultipleObjectsEx() could simplify the code here but
+    //     it is not available in very old Windows versions
+    if ( !::PeekMessage(msg, 0, 0, 0, PM_REMOVE) )

     {
     {

-        if ( wnd->MSWProcessMessage((WXMSG *)msg) )
-            return TRUE;
+        // we use this function just in order to not block longer than the
+        // given timeout, so we don't pass any handles to it at all
+        DWORD rc = ::MsgWaitForMultipleObjects
+                     (
+                        0, NULL,
+                        FALSE,
+                        timeout,
+                        QS_ALLINPUT
+                     );
+
+        switch ( rc )
+        {
+            default:
+                wxLogDebug("unexpected MsgWaitForMultipleObjects() return "
+                           "value %lu", rc);
+                // fall through
+
+            case WAIT_TIMEOUT:
+                return -1;
+
+            case WAIT_OBJECT_0:
+                if ( !::PeekMessage(msg, 0, 0, 0, PM_REMOVE) )
+                {
+                    // somehow it may happen that MsgWaitForMultipleObjects()
+                    // returns true but there are no messages -- just treat it
+                    // the same as timeout then
+                    return -1;
+                }
+                break;
+        }

     }
 
     }
 

-    return FALSE;
+    return msg->message != WM_QUIT;

 }
 
 }
 

-// ----------------------------------------------------------------------------
-// wxEventLoopImpl idle event processing
-// ----------------------------------------------------------------------------

 
 

-bool wxEventLoopImpl::SendIdleMessage()
-{
-    wxIdleEvent event;
+#endif // wxUSE_BASE

 
 

-    return wxTheApp->ProcessEvent(event) && event.MoreRequested();
-}
+#if wxUSE_GUI

 
 // ============================================================================
 
 // ============================================================================

-// wxEventLoop implementation
+// GUI wxEventLoop implementation

 // ============================================================================
 
 // ============================================================================
 

-// ----------------------------------------------------------------------------
-// wxEventLoop running and exiting
-// ----------------------------------------------------------------------------
+wxWindowMSW *wxGUIEventLoop::ms_winCritical = NULL;

 
 

-wxEventLoop::~wxEventLoop()
+bool wxGUIEventLoop::IsChildOfCriticalWindow(wxWindowMSW *win)

 {
 {

-    wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
-}
+    while ( win )
+    {
+        if ( win == ms_winCritical )
+            return true;

 
 

-bool wxEventLoop::IsRunning() const
-{
-    return m_impl != NULL;
+        win = win->GetParent();
+    }
+
+    return false;

 }
 
 }
 

-int wxEventLoop::Run()
+bool wxGUIEventLoop::PreProcessMessage(WXMSG *msg)

 {
 {

-    // event loops are not recursive, you need to create another loop!
-    wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
-
-    m_impl = new wxEventLoopImpl;
+    HWND hwnd = msg->hwnd;
+    wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
+    wxWindow *wnd;

 
 

-    for ( ;; )
+    // this might happen if we're in a modeless dialog, or if a wx control has
+    // children which themselves were not created by wx (i.e. wxActiveX control children)
+    if ( !wndThis )

     {
     {

-#if wxUSE_THREADS
-        wxMutexGuiLeaveOrEnter();
-#endif // wxUSE_THREADS
+        while ( hwnd && (::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD ))
+        {
+            hwnd = ::GetParent(hwnd);

 
 

-        // generate and process idle events for as long as we don't have
-        // anything else to do
-        while ( !Pending() && m_impl->SendIdleMessage() )
-            ;
+            // If the control has a wx parent, break and give the parent a chance
+            // to process the window message
+            wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
+            if (wndThis != NULL)
+                break;
+        }

 
 

-        // a message came or no more idle processing to do, sit in Dispatch()
-        // waiting for the next message
-        if ( !Dispatch() )
+        if ( !wndThis )

         {
         {

-            // we got WM_QUIT
-            break;
+            // this may happen if the event occurred in a standard modeless dialog (the
+            // only example of which I know of is the find/replace dialog) - then call
+            // IsDialogMessage() to make TAB navigation in it work
+
+            // NOTE: IsDialogMessage() just eats all the messages (i.e. returns true for
+            // them) if we call it for the control itself
+            return hwnd && ::IsDialogMessage(hwnd, msg) != 0;

         }
     }
 
         }
     }
 

-    int exitcode = m_impl->GetExitCode();
-    delete m_impl;
-    m_impl = NULL;
+    if ( !AllowProcessing(wndThis) )
+    {
+        // not a child of critical window, so we eat the event but take care to
+        // stop an endless stream of WM_PAINTs which would have resulted if we
+        // didn't validate the invalidated part of the window
+        if ( msg->message == WM_PAINT )
+            ::ValidateRect(hwnd, NULL);

 
 

-    return exitcode;
-}
+        return true;
+    }

 
 

-void wxEventLoop::Exit(int rc)
-{
-    wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") );
+#if wxUSE_TOOLTIPS
+    // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
+    // popup the tooltip bubbles
+    if ( msg->message == WM_MOUSEMOVE )
+    {
+        // we should do it if one of window children has an associated tooltip
+        // (and not just if the window has a tooltip itself)
+        if ( wndThis->HasToolTips() )
+            wxToolTip::RelayEvent((WXMSG *)msg);
+    }
+#endif // wxUSE_TOOLTIPS

 
 

-    m_impl->SetExitCode(rc);
+    // allow the window to prevent certain messages from being
+    // translated/processed (this is currently used by wxTextCtrl to always
+    // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
+    if ( !wndThis->MSWShouldPreProcessMessage((WXMSG *)msg) )
+    {
+        return false;
+    }

 
 

-    ::PostQuitMessage(rc);
-}
+    // try translations first: the accelerators override everything
+    for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
+    {
+        if ( wnd->MSWTranslateMessage((WXMSG *)msg))
+            return true;

 
 

-// ----------------------------------------------------------------------------
-// wxEventLoop message processing dispatching
-// ----------------------------------------------------------------------------
+        // stop at first top level window, i.e. don't try to process the key
+        // strokes originating in a dialog using the accelerators of the parent
+        // frame - this doesn't make much sense
+        if ( wnd->IsTopLevel() )
+            break;
+    }

 
 

-bool wxEventLoop::Pending() const
-{
-    MSG msg;
-    return ::PeekMessage(&msg, 0, 0, 0, PM_NOREMOVE) != 0;
-}
+    // now try the other hooks (kbd navigation is handled here)
+    for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
+    {
+        if ( wnd->MSWProcessMessage((WXMSG *)msg) )
+            return true;

 
 

-bool wxEventLoop::Dispatch()
-{
-    wxCHECK_MSG( IsRunning(), FALSE, _T("can't call Dispatch() if not running") );
+        // also stop at first top level window here, just as above because
+        // if we don't do this, pressing ESC on a modal dialog shown as child
+        // of a modal dialog with wxID_CANCEL will cause the parent dialog to
+        // be closed, for example
+        if ( wnd->IsTopLevel() )
+            break;
+    }

 
 

-    MSG msg;
-    BOOL rc = ::GetMessage(&msg, (HWND) NULL, 0, 0);
+    // no special preprocessing for this message, dispatch it normally
+    return false;
+}

 
 

-    if ( rc == 0 )
+void wxGUIEventLoop::ProcessMessage(WXMSG *msg)
+{
+    // give us the chance to preprocess the message first
+    if ( !PreProcessMessage(msg) )

     {
     {

-        // got WM_QUIT
-        return FALSE;
+        // if it wasn't done, dispatch it to the corresponding window
+        ::TranslateMessage(msg);
+        ::DispatchMessage(msg);

     }
     }

+}

 
 

-    if ( rc == -1 )
-    {
-        // should never happen, but let's test for it nevertheless
-        wxLogLastError(wxT("GetMessage"));
-
-        // still break from the loop
-        return FALSE;
-    }
+bool wxGUIEventLoop::Dispatch()
+{
+    MSG msg;
+    if ( !GetNextMessage(&msg) )
+        return false;

 
 #if wxUSE_THREADS
     wxASSERT_MSG( wxThread::IsMain(),
                   wxT("only the main thread can process Windows messages") );
 
 
 #if wxUSE_THREADS
     wxASSERT_MSG( wxThread::IsMain(),
                   wxT("only the main thread can process Windows messages") );
 

-    static bool s_hadGuiLock = TRUE;
-    static wxMsgArray s_aSavedMessages;
+    static bool s_hadGuiLock = true;
+    static wxMsgList s_aSavedMessages;

 
     // if a secondary thread owning the mutex is doing GUI calls, save all
     // messages for later processing - we can't process them right now because
     // it will lead to recursive library calls (and we're not reentrant)
     if ( !wxGuiOwnedByMainThread() )
     {
 
     // if a secondary thread owning the mutex is doing GUI calls, save all
     // messages for later processing - we can't process them right now because
     // it will lead to recursive library calls (and we're not reentrant)
     if ( !wxGuiOwnedByMainThread() )
     {

-        s_hadGuiLock = FALSE;
+        s_hadGuiLock = false;

 
         // leave out WM_COMMAND messages: too dangerous, sometimes
         // the message will be processed twice
 
         // leave out WM_COMMAND messages: too dangerous, sometimes
         // the message will be processed twice

-        if ( !wxIsWaitingForThread() ||
-                msg.message != WM_COMMAND )
+        if ( !wxIsWaitingForThread() || msg.message != WM_COMMAND )

         {
         {

-            s_aSavedMessages.Add(msg);
+            MSG* pMsg = new MSG(msg);
+            s_aSavedMessages.Append(pMsg);

         }
 
         }
 

-        return TRUE;
+        return true;

     }
     else
     {
     }
     else
     {


@@ -268,22 +313,100 @@ bool wxEventLoop::Dispatch()
         //       messages normally - expect some things to break...
         if ( !s_hadGuiLock )
         {
         //       messages normally - expect some things to break...
         if ( !s_hadGuiLock )
         {

-            s_hadGuiLock = TRUE;
+            s_hadGuiLock = true;

 
 

-            size_t count = s_aSavedMessages.Count();
-            for ( size_t n = 0; n < count; n++ )
+            wxMsgList::compatibility_iterator node = s_aSavedMessages.GetFirst();
+            while (node)

             {
             {

-                MSG& msg = s_aSavedMessages[n];
-                m_impl->ProcessMessage(&msg);
-            }
+                MSG* pMsg = node->GetData();
+                s_aSavedMessages.Erase(node);
+
+                ProcessMessage(pMsg);
+                delete pMsg;

 
 

-            s_aSavedMessages.Empty();
+                node = s_aSavedMessages.GetFirst();
+            }

         }
     }
 #endif // wxUSE_THREADS
 
         }
     }
 #endif // wxUSE_THREADS
 

-    m_impl->ProcessMessage(&msg);
+    ProcessMessage(&msg);

 
 

-    return TRUE;
+    return true;

 }
 
 }
 

+int wxGUIEventLoop::DispatchTimeout(unsigned long timeout)
+{
+    MSG msg;
+    int rc = GetNextMessageTimeout(&msg, timeout);
+    if ( rc != 1 )
+        return rc;
+
+    ProcessMessage(&msg);
+
+    return 1;
+}
+
+void wxGUIEventLoop::OnNextIteration()
+{
+#if wxUSE_THREADS
+    wxMutexGuiLeaveOrEnter();
+#endif // wxUSE_THREADS
+}
+
+void wxGUIEventLoop::WakeUp()
+{
+    ::PostMessage(NULL, WM_NULL, 0, 0);
+}
+
+#else // !wxUSE_GUI
+
+#if wxUSE_CONSOLE_EVENTLOOP
+
+void wxConsoleEventLoop::WakeUp()
+{
+#if wxUSE_THREADS
+    wxWakeUpMainThread();
+#endif
+}
+
+void wxConsoleEventLoop::ProcessMessage(WXMSG *msg)
+{
+    if ( msg->message == WM_TIMER )
+    {
+        TIMERPROC proc = (TIMERPROC)msg->lParam;
+        if ( proc )
+            (*proc)(NULL, 0, msg->wParam, 0);
+    }
+    else
+    {
+        ::DispatchMessage(msg);
+    }
+}
+
+bool wxConsoleEventLoop::Dispatch()
+{
+    MSG msg;
+    if ( !GetNextMessage(&msg) )
+        return false;
+
+    ProcessMessage(&msg);
+
+    return !m_shouldExit;
+}
+
+int wxConsoleEventLoop::DispatchTimeout(unsigned long timeout)
+{
+    MSG msg;
+    int rc = GetNextMessageTimeout(&msg, timeout);
+    if ( rc != 1 )
+        return rc;
+
+    ProcessMessage(&msg);
+
+    return !m_shouldExit;
+}
+
+#endif // wxUSE_CONSOLE_EVENTLOOP
+
+#endif //wxUSE_GUI