src/common/popupcmn.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/common/popupcmn.cpp
// Purpose:     implementation of wxPopupTransientWindow
// Author:      Vadim Zeitlin
// Modified by:
// Created:     06.01.01
// RCS-ID:      $Id$
// Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// License:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

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

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_POPUPWIN

#include "wx/popupwin.h"

#ifndef WX_PRECOMP
    #include "wx/combobox.h"        // wxComboCtrl
    #include "wx/app.h"             // wxPostEvent
    #include "wx/log.h"
#endif //WX_PRECOMP

#include "wx/recguard.h"

#ifdef __WXUNIVERSAL__
    #include "wx/univ/renderer.h"
    #include "wx/scrolbar.h"
#endif // __WXUNIVERSAL__

#ifdef __WXGTK__
    #include <gtk/gtk.h>
#endif
#ifdef __WXX11__
#include "wx/x11/private.h"
#endif

IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow, wxWindow)
IMPLEMENT_DYNAMIC_CLASS(wxPopupTransientWindow, wxPopupWindow)

#if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
    IMPLEMENT_DYNAMIC_CLASS(wxPopupComboWindow, wxPopupTransientWindow)
#endif

// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------

// event handlers which we use to intercept events which cause the popup to
// disappear
class wxPopupWindowHandler : public wxEvtHandler
{
public:
    wxPopupWindowHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}

protected:
    // event handlers
    void OnLeftDown(wxMouseEvent& event);

private:
    wxPopupTransientWindow *m_popup;

    DECLARE_EVENT_TABLE()
    DECLARE_NO_COPY_CLASS(wxPopupWindowHandler)
};

class wxPopupFocusHandler : public wxEvtHandler
{
public:
    wxPopupFocusHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}

protected:
    void OnKillFocus(wxFocusEvent& event);
    void OnKeyDown(wxKeyEvent& event);

private:
    wxPopupTransientWindow *m_popup;

    DECLARE_EVENT_TABLE()
    DECLARE_NO_COPY_CLASS(wxPopupFocusHandler)
};

// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------

BEGIN_EVENT_TABLE(wxPopupWindowHandler, wxEvtHandler)
    EVT_LEFT_DOWN(wxPopupWindowHandler::OnLeftDown)
END_EVENT_TABLE()

BEGIN_EVENT_TABLE(wxPopupFocusHandler, wxEvtHandler)
    EVT_KILL_FOCUS(wxPopupFocusHandler::OnKillFocus)
    EVT_KEY_DOWN(wxPopupFocusHandler::OnKeyDown)
END_EVENT_TABLE()

BEGIN_EVENT_TABLE(wxPopupTransientWindow, wxPopupWindow)
#ifdef __WXMSW__
    EVT_IDLE(wxPopupTransientWindow::OnIdle)
#endif
END_EVENT_TABLE()

// ============================================================================
// implementation
// ============================================================================

// ----------------------------------------------------------------------------
// wxPopupWindowBase
// ----------------------------------------------------------------------------

wxPopupWindowBase::~wxPopupWindowBase()
{
    // this destructor is required for Darwin
}

bool wxPopupWindowBase::Create(wxWindow* WXUNUSED(parent), int WXUNUSED(flags))
{
    return true;
}

void wxPopupWindowBase::Position(const wxPoint& ptOrigin,
                                 const wxSize& size)
{
    wxSize sizeScreen = wxGetDisplaySize(),
           sizeSelf = GetSize();

    // is there enough space to put the popup below the window (where we put it
    // by default)?
    wxCoord y = ptOrigin.y + size.y;
    if ( y + sizeSelf.y > sizeScreen.y )
    {
        // check if there is enough space above
        if ( ptOrigin.y > sizeSelf.y )
        {
            // do position the control above the window
            y -= size.y + sizeSelf.y;
        }
        //else: not enough space below nor above, leave below
    }

    // now check left/right too
    wxCoord x = ptOrigin.x;

    if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
    {
        // shift the window to the left instead of the right.
        x -= size.x;
        x -= sizeSelf.x;        // also shift it by window width.
    }
    else
        x += size.x;


    if ( x + sizeSelf.x > sizeScreen.x )
    {
        // check if there is enough space to the left
        if ( ptOrigin.x > sizeSelf.x )
        {
            // do position the control to the left
            x -= size.x + sizeSelf.x;
        }
        //else: not enough space there neither, leave in default position
    }

    Move(x, y, wxSIZE_NO_ADJUSTMENTS);
}

// ----------------------------------------------------------------------------
// wxPopupTransientWindow
// ----------------------------------------------------------------------------

void wxPopupTransientWindow::Init()
{
    m_child =
    m_focus = (wxWindow *)NULL;

    m_handlerFocus = NULL;
    m_handlerPopup = NULL;
}

wxPopupTransientWindow::wxPopupTransientWindow(wxWindow *parent, int style)
{
    Init();

    (void)Create(parent, style);
}

wxPopupTransientWindow::~wxPopupTransientWindow()
{
    if (m_handlerPopup && m_handlerPopup->GetNextHandler())
        PopHandlers();

    wxASSERT(!m_handlerFocus || !m_handlerFocus->GetNextHandler());
    wxASSERT(!m_handlerPopup || !m_handlerPopup->GetNextHandler());

    delete m_handlerFocus;
    delete m_handlerPopup;
}

void wxPopupTransientWindow::PopHandlers()
{
    if ( m_child )
    {
        if ( !m_child->RemoveEventHandler(m_handlerPopup) )
        {
            // something is very wrong and someone else probably deleted our
            // handler - so don't risk deleting it second time
            m_handlerPopup = NULL;
        }
        if (m_child->HasCapture())
        {
            m_child->ReleaseMouse();
        }
        m_child = NULL;
    }

    if ( m_focus )
    {
        if ( !m_focus->RemoveEventHandler(m_handlerFocus) )
        {
            // see above
            m_handlerFocus = NULL;
        }
    }
    m_focus = NULL;
}

void wxPopupTransientWindow::Popup(wxWindow *winFocus)
{
    const wxWindowList& children = GetChildren();
    if ( children.GetCount() )
    {
        m_child = children.GetFirst()->GetData();
    }
    else
    {
        m_child = this;
    }

    Show();

    // There is is a problem if these are still in use
    wxASSERT(!m_handlerFocus || !m_handlerFocus->GetNextHandler());
    wxASSERT(!m_handlerPopup || !m_handlerPopup->GetNextHandler());

    if (!m_handlerPopup)
        m_handlerPopup = new wxPopupWindowHandler(this);

    m_child->PushEventHandler(m_handlerPopup);

    m_focus = winFocus ? winFocus : this;
    m_focus->SetFocus();

#ifdef __WXMSW__
    // MSW doesn't allow to set focus to the popup window, but we need to
    // subclass the window which has the focus, and not winFocus passed in or
    // otherwise everything else breaks down
    m_focus = FindFocus();
#elif defined(__WXGTK__)
    // GTK+ catches the activate events from the popup
    // window, not the focus events from the child window
    m_focus = this;
#endif

    if ( m_focus )
    {
        if (!m_handlerFocus)
            m_handlerFocus = new wxPopupFocusHandler(this);

        m_focus->PushEventHandler(m_handlerFocus);
    }
}

bool wxPopupTransientWindow::Show( bool show )
{
#ifdef __WXGTK__
    if (!show)
    {
        gdk_pointer_ungrab( (guint32)GDK_CURRENT_TIME );

        gtk_grab_remove( m_widget );
    }
#endif

#ifdef __WXX11__
    if (!show)
    {
        XUngrabPointer( wxGlobalDisplay(), CurrentTime );
    }
#endif

#ifdef __WXMSW__
    if (!show && m_child && m_child->HasCapture())
    {
        m_child->ReleaseMouse();
    }
#endif

    bool ret = wxPopupWindow::Show( show );

#ifdef __WXGTK__
    if (show)
    {
        gtk_grab_add( m_widget );

        gdk_pointer_grab( m_widget->window, TRUE,
                          (GdkEventMask)
                            (GDK_BUTTON_PRESS_MASK |
                             GDK_BUTTON_RELEASE_MASK |
                             GDK_POINTER_MOTION_HINT_MASK |
                             GDK_POINTER_MOTION_MASK),
                          (GdkWindow *) NULL,
                          (GdkCursor *) NULL,
                          (guint32)GDK_CURRENT_TIME );
    }
#endif

#ifdef __WXX11__
    if (show)
    {
        Window xwindow = (Window) m_clientWindow;

        /* int res =*/ XGrabPointer(wxGlobalDisplay(), xwindow,
            True,
            ButtonPressMask | ButtonReleaseMask | ButtonMotionMask | EnterWindowMask | LeaveWindowMask | PointerMotionMask,
            GrabModeAsync,
            GrabModeAsync,
            None,
            None,
            CurrentTime );
    }
#endif

#ifdef __WXMSW__
    if (show && m_child)
    {
        // Assume that the mouse is outside the popup to begin with
        m_child->CaptureMouse();
    }
#endif

    return ret;
}

void wxPopupTransientWindow::Dismiss()
{
    Hide();
    PopHandlers();
}

void wxPopupTransientWindow::DismissAndNotify()
{
    Dismiss();
    OnDismiss();
}

void wxPopupTransientWindow::OnDismiss()
{
    // nothing to do here - but it may be interesting for derived class
}

bool wxPopupTransientWindow::ProcessLeftDown(wxMouseEvent& WXUNUSED(event))
{
    // no special processing here
    return false;
}

#ifdef __WXMSW__
void wxPopupTransientWindow::OnIdle(wxIdleEvent& event)
{
    event.Skip();

    if (IsShown() && m_child)
    {
        wxPoint pos = ScreenToClient(wxGetMousePosition());
        wxRect rect(GetSize());

        if ( rect.Contains(pos) )
        {
            if ( m_child->HasCapture() )
            {
                m_child->ReleaseMouse();
            }
        }
        else
        {
            if ( !m_child->HasCapture() )
            {
                m_child->CaptureMouse();
            }
        }
    }
}
#endif // __WXMSW__


#if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)

// ----------------------------------------------------------------------------
// wxPopupComboWindow
// ----------------------------------------------------------------------------

BEGIN_EVENT_TABLE(wxPopupComboWindow, wxPopupTransientWindow)
    EVT_KEY_DOWN(wxPopupComboWindow::OnKeyDown)
END_EVENT_TABLE()

wxPopupComboWindow::wxPopupComboWindow(wxComboCtrl *parent)
                  : wxPopupTransientWindow(parent)
{
    m_combo = parent;
}

bool wxPopupComboWindow::Create(wxComboCtrl *parent)
{
    m_combo = parent;

    return wxPopupWindow::Create(parent);
}

void wxPopupComboWindow::PositionNearCombo()
{
    // the origin point must be in screen coords
    wxPoint ptOrigin = m_combo->ClientToScreen(wxPoint(0,0));

#if 0 //def __WXUNIVERSAL__
    // account for the fact that (0, 0) is not the top left corner of the
    // window: there is also the border
    wxRect rectBorders = m_combo->GetRenderer()->
                            GetBorderDimensions(m_combo->GetBorder());
    ptOrigin.x -= rectBorders.x;
    ptOrigin.y -= rectBorders.y;
#endif // __WXUNIVERSAL__

    // position below or above the combobox: the width is 0 to put it exactly
    // below us, not to the left or to the right
    Position(ptOrigin, wxSize(0, m_combo->GetSize().y));
}

void wxPopupComboWindow::OnDismiss()
{
    m_combo->OnPopupDismiss();
}

void wxPopupComboWindow::OnKeyDown(wxKeyEvent& event)
{
    m_combo->ProcessEvent(event);
}

#endif // wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)

// ----------------------------------------------------------------------------
// wxPopupWindowHandler
// ----------------------------------------------------------------------------

void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event)
{
    // let the window have it first (we're the first event handler in the chain
    // of handlers for this window)
    if ( m_popup->ProcessLeftDown(event) )
    {
        return;
    }

    wxPoint pos = event.GetPosition();

    // in non-Univ ports the system manages scrollbars for us
#if defined(__WXUNIVERSAL__) && wxUSE_SCROLLBAR
    // scrollbar on which the click occurred
    wxWindow *sbar = NULL;
#endif // __WXUNIVERSAL__ && wxUSE_SCROLLBAR

    wxWindow *win = (wxWindow *)event.GetEventObject();

    switch ( win->HitTest(pos.x, pos.y) )
    {
        case wxHT_WINDOW_OUTSIDE:
            {
                // do the coords translation now as after DismissAndNotify()
                // m_popup may be destroyed
                wxMouseEvent event2(event);

                m_popup->ClientToScreen(&event2.m_x, &event2.m_y);

                // clicking outside a popup dismisses it
                m_popup->DismissAndNotify();

                // dismissing a tooltip shouldn't waste a click, i.e. you
                // should be able to dismiss it and press the button with the
                // same click, so repost this event to the window beneath us
                wxWindow *winUnder = wxFindWindowAtPoint(event2.GetPosition());
                if ( winUnder )
                {
                    // translate the event coords to the ones of the window
                    // which is going to get the event
                    winUnder->ScreenToClient(&event2.m_x, &event2.m_y);

                    event2.SetEventObject(winUnder);
                    wxPostEvent(winUnder, event2);
                }
            }
            break;

#if defined(__WXUNIVERSAL__) && wxUSE_SCROLLBAR
        case wxHT_WINDOW_HORZ_SCROLLBAR:
            sbar = win->GetScrollbar(wxHORIZONTAL);
            break;

        case wxHT_WINDOW_VERT_SCROLLBAR:
            sbar = win->GetScrollbar(wxVERTICAL);
            break;
#endif // __WXUNIVERSAL__ && wxUSE_SCROLLBAR

        default:
            // forgot to update the switch after adding a new hit test code?
            wxFAIL_MSG( _T("unexpected HitTest() return value") );
            // fall through

        case wxHT_WINDOW_CORNER:
            // don't actually know if this one is good for anything, but let it
            // pass just in case

        case wxHT_WINDOW_INSIDE:
            // let the normal processing take place
            event.Skip();
            break;
    }

#if defined(__WXUNIVERSAL__) && wxUSE_SCROLLBAR
    if ( sbar )
    {
        // translate the event coordinates to the scrollbar ones
        pos = sbar->ScreenToClient(win->ClientToScreen(pos));

        // and give the event to it
        wxMouseEvent event2 = event;
        event2.m_x = pos.x;
        event2.m_y = pos.y;

        (void)sbar->GetEventHandler()->ProcessEvent(event2);
    }
#endif // __WXUNIVERSAL__ && wxUSE_SCROLLBAR
}

// ----------------------------------------------------------------------------
// wxPopupFocusHandler
// ----------------------------------------------------------------------------

void wxPopupFocusHandler::OnKillFocus(wxFocusEvent& event)
{
    // when we lose focus we always disappear - unless it goes to the popup (in
    // which case we don't really lose it)
    wxWindow *win = event.GetWindow();
    while ( win )
    {
        if ( win == m_popup )
            return;
        win = win->GetParent();
    }

    m_popup->DismissAndNotify();
}

void wxPopupFocusHandler::OnKeyDown(wxKeyEvent& event)
{
    // we can be associated with the popup itself in which case we should avoid
    // infinite recursion
    static int s_inside;
    wxRecursionGuard guard(s_inside);
    if ( guard.IsInside() )
    {
        event.Skip();
        return;
    }

    // let the window have it first, it might process the keys
    if ( !m_popup->GetEventHandler()->ProcessEvent(event) )
    {
        // by default, dismiss the popup
        m_popup->DismissAndNotify();
    }
}

#endif // wxUSE_POPUPWIN
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/common/popupcmn.cpp
	3	// Purpose: implementation of wxPopupTransientWindow
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 06.01.01
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
	9	// License: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	// For compilers that support precompilation, includes "wx.h".
	21	#include "wx/wxprec.h"
	22
	23	#ifdef __BORLANDC__
	24	#pragma hdrstop
	25	#endif
	26
	27	#if wxUSE_POPUPWIN
	28
	29	#include "wx/popupwin.h"
	30
	31	#ifndef WX_PRECOMP
	32	#include "wx/combobox.h" // wxComboCtrl
	33	#include "wx/app.h" // wxPostEvent
	34	#include "wx/log.h"
	35	#endif //WX_PRECOMP
	36
	37	#include "wx/recguard.h"
	38
	39	#ifdef __WXUNIVERSAL__
	40	#include "wx/univ/renderer.h"
	41	#include "wx/scrolbar.h"
	42	#endif // __WXUNIVERSAL__
	43
	44	#ifdef __WXGTK__
	45	#include <gtk/gtk.h>
	46	#endif
	47	#ifdef __WXX11__
	48	#include "wx/x11/private.h"
	49	#endif
	50
	51	IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow, wxWindow)
	52	IMPLEMENT_DYNAMIC_CLASS(wxPopupTransientWindow, wxPopupWindow)
	53
	54	#if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
	55	IMPLEMENT_DYNAMIC_CLASS(wxPopupComboWindow, wxPopupTransientWindow)
	56	#endif
	57
	58	// ----------------------------------------------------------------------------
	59	// private classes
	60	// ----------------------------------------------------------------------------
	61
	62	// event handlers which we use to intercept events which cause the popup to
	63	// disappear
	64	class wxPopupWindowHandler : public wxEvtHandler
	65	{
	66	public:
	67	wxPopupWindowHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}
	68
	69	protected:
	70	// event handlers
	71	void OnLeftDown(wxMouseEvent& event);
	72
	73	private:
	74	wxPopupTransientWindow *m_popup;
	75
	76	DECLARE_EVENT_TABLE()
	77	DECLARE_NO_COPY_CLASS(wxPopupWindowHandler)
	78	};
	79
	80	class wxPopupFocusHandler : public wxEvtHandler
	81	{
	82	public:
	83	wxPopupFocusHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}
	84
	85	protected:
	86	void OnKillFocus(wxFocusEvent& event);
	87	void OnKeyDown(wxKeyEvent& event);
	88
	89	private:
	90	wxPopupTransientWindow *m_popup;
	91
	92	DECLARE_EVENT_TABLE()
	93	DECLARE_NO_COPY_CLASS(wxPopupFocusHandler)
	94	};
	95
	96	// ----------------------------------------------------------------------------
	97	// event tables
	98	// ----------------------------------------------------------------------------
	99
	100	BEGIN_EVENT_TABLE(wxPopupWindowHandler, wxEvtHandler)
	101	EVT_LEFT_DOWN(wxPopupWindowHandler::OnLeftDown)
	102	END_EVENT_TABLE()
	103
	104	BEGIN_EVENT_TABLE(wxPopupFocusHandler, wxEvtHandler)
	105	EVT_KILL_FOCUS(wxPopupFocusHandler::OnKillFocus)
	106	EVT_KEY_DOWN(wxPopupFocusHandler::OnKeyDown)
	107	END_EVENT_TABLE()
	108
	109	BEGIN_EVENT_TABLE(wxPopupTransientWindow, wxPopupWindow)
	110	#ifdef __WXMSW__
	111	EVT_IDLE(wxPopupTransientWindow::OnIdle)
	112	#endif
	113	END_EVENT_TABLE()
	114
	115	// ============================================================================
	116	// implementation
	117	// ============================================================================
	118
	119	// ----------------------------------------------------------------------------
	120	// wxPopupWindowBase
	121	// ----------------------------------------------------------------------------
	122
	123	wxPopupWindowBase::~wxPopupWindowBase()
	124	{
	125	// this destructor is required for Darwin
	126	}
	127
	128	bool wxPopupWindowBase::Create(wxWindow* WXUNUSED(parent), int WXUNUSED(flags))
	129	{
	130	return true;
	131	}
	132
	133	void wxPopupWindowBase::Position(const wxPoint& ptOrigin,
	134	const wxSize& size)
	135	{
	136	wxSize sizeScreen = wxGetDisplaySize(),
	137	sizeSelf = GetSize();
	138
	139	// is there enough space to put the popup below the window (where we put it
	140	// by default)?
	141	wxCoord y = ptOrigin.y + size.y;
	142	if ( y + sizeSelf.y > sizeScreen.y )
	143	{
	144	// check if there is enough space above
	145	if ( ptOrigin.y > sizeSelf.y )
	146	{
	147	// do position the control above the window
	148	y -= size.y + sizeSelf.y;
	149	}
	150	//else: not enough space below nor above, leave below
	151	}
	152
	153	// now check left/right too
	154	wxCoord x = ptOrigin.x;
	155
	156	if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
	157	{
	158	// shift the window to the left instead of the right.
	159	x -= size.x;
	160	x -= sizeSelf.x; // also shift it by window width.
	161	}
	162	else
	163	x += size.x;
	164
	165
	166	if ( x + sizeSelf.x > sizeScreen.x )
	167	{
	168	// check if there is enough space to the left
	169	if ( ptOrigin.x > sizeSelf.x )
	170	{
	171	// do position the control to the left
	172	x -= size.x + sizeSelf.x;
	173	}
	174	//else: not enough space there neither, leave in default position
	175	}
	176
	177	Move(x, y, wxSIZE_NO_ADJUSTMENTS);
	178	}
	179
	180	// ----------------------------------------------------------------------------
	181	// wxPopupTransientWindow
	182	// ----------------------------------------------------------------------------
	183
	184	void wxPopupTransientWindow::Init()
	185	{
	186	m_child =
	187	m_focus = (wxWindow *)NULL;
	188
	189	m_handlerFocus = NULL;
	190	m_handlerPopup = NULL;
	191	}
	192
	193	wxPopupTransientWindow::wxPopupTransientWindow(wxWindow *parent, int style)
	194	{
	195	Init();
	196
	197	(void)Create(parent, style);
	198	}
	199
	200	wxPopupTransientWindow::~wxPopupTransientWindow()
	201	{
	202	if (m_handlerPopup && m_handlerPopup->GetNextHandler())
	203	PopHandlers();
	204
	205	wxASSERT(!m_handlerFocus \|\| !m_handlerFocus->GetNextHandler());
	206	wxASSERT(!m_handlerPopup \|\| !m_handlerPopup->GetNextHandler());
	207
	208	delete m_handlerFocus;
	209	delete m_handlerPopup;
	210	}
	211
	212	void wxPopupTransientWindow::PopHandlers()
	213	{
	214	if ( m_child )
	215	{
	216	if ( !m_child->RemoveEventHandler(m_handlerPopup) )
	217	{
	218	// something is very wrong and someone else probably deleted our
	219	// handler - so don't risk deleting it second time
	220	m_handlerPopup = NULL;
	221	}
	222	if (m_child->HasCapture())
	223	{
	224	m_child->ReleaseMouse();
	225	}
	226	m_child = NULL;
	227	}
	228
	229	if ( m_focus )
	230	{
	231	if ( !m_focus->RemoveEventHandler(m_handlerFocus) )
	232	{
	233	// see above
	234	m_handlerFocus = NULL;
	235	}
	236	}
	237	m_focus = NULL;
	238	}
	239
	240	void wxPopupTransientWindow::Popup(wxWindow *winFocus)
	241	{
	242	const wxWindowList& children = GetChildren();
	243	if ( children.GetCount() )
	244	{
	245	m_child = children.GetFirst()->GetData();
	246	}
	247	else
	248	{
	249	m_child = this;
	250	}
	251
	252	Show();
	253
	254	// There is is a problem if these are still in use
	255	wxASSERT(!m_handlerFocus \|\| !m_handlerFocus->GetNextHandler());
	256	wxASSERT(!m_handlerPopup \|\| !m_handlerPopup->GetNextHandler());
	257
	258	if (!m_handlerPopup)
	259	m_handlerPopup = new wxPopupWindowHandler(this);
	260
	261	m_child->PushEventHandler(m_handlerPopup);
	262
	263	m_focus = winFocus ? winFocus : this;
	264	m_focus->SetFocus();
	265
	266	#ifdef __WXMSW__
	267	// MSW doesn't allow to set focus to the popup window, but we need to
	268	// subclass the window which has the focus, and not winFocus passed in or
	269	// otherwise everything else breaks down
	270	m_focus = FindFocus();
	271	#elif defined(__WXGTK__)
	272	// GTK+ catches the activate events from the popup
	273	// window, not the focus events from the child window
	274	m_focus = this;
	275	#endif
	276
	277	if ( m_focus )
	278	{
	279	if (!m_handlerFocus)
	280	m_handlerFocus = new wxPopupFocusHandler(this);
	281
	282	m_focus->PushEventHandler(m_handlerFocus);
	283	}
	284	}
	285
	286	bool wxPopupTransientWindow::Show( bool show )
	287	{
	288	#ifdef __WXGTK__
	289	if (!show)
	290	{
	291	gdk_pointer_ungrab( (guint32)GDK_CURRENT_TIME );
	292
	293	gtk_grab_remove( m_widget );
	294	}
	295	#endif
	296
	297	#ifdef __WXX11__
	298	if (!show)
	299	{
	300	XUngrabPointer( wxGlobalDisplay(), CurrentTime );
	301	}
	302	#endif
	303
	304	#ifdef __WXMSW__
	305	if (!show && m_child && m_child->HasCapture())
	306	{
	307	m_child->ReleaseMouse();
	308	}
	309	#endif
	310
	311	bool ret = wxPopupWindow::Show( show );
	312
	313	#ifdef __WXGTK__
	314	if (show)
	315	{
	316	gtk_grab_add( m_widget );
	317
	318	gdk_pointer_grab( m_widget->window, TRUE,
	319	(GdkEventMask)
	320	(GDK_BUTTON_PRESS_MASK \|
	321	GDK_BUTTON_RELEASE_MASK \|
	322	GDK_POINTER_MOTION_HINT_MASK \|
	323	GDK_POINTER_MOTION_MASK),
	324	(GdkWindow *) NULL,
	325	(GdkCursor *) NULL,
	326	(guint32)GDK_CURRENT_TIME );
	327	}
	328	#endif
	329
	330	#ifdef __WXX11__
	331	if (show)
	332	{
	333	Window xwindow = (Window) m_clientWindow;
	334
	335	/* int res =*/ XGrabPointer(wxGlobalDisplay(), xwindow,
	336	True,
	337	ButtonPressMask \| ButtonReleaseMask \| ButtonMotionMask \| EnterWindowMask \| LeaveWindowMask \| PointerMotionMask,
	338	GrabModeAsync,
	339	GrabModeAsync,
	340	None,
	341	None,
	342	CurrentTime );
	343	}
	344	#endif
	345
	346	#ifdef __WXMSW__
	347	if (show && m_child)
	348	{
	349	// Assume that the mouse is outside the popup to begin with
	350	m_child->CaptureMouse();
	351	}
	352	#endif
	353
	354	return ret;
	355	}
	356
	357	void wxPopupTransientWindow::Dismiss()
	358	{
	359	Hide();
	360	PopHandlers();
	361	}
	362
	363	void wxPopupTransientWindow::DismissAndNotify()
	364	{
	365	Dismiss();
	366	OnDismiss();
	367	}
	368
	369	void wxPopupTransientWindow::OnDismiss()
	370	{
	371	// nothing to do here - but it may be interesting for derived class
	372	}
	373
	374	bool wxPopupTransientWindow::ProcessLeftDown(wxMouseEvent& WXUNUSED(event))
	375	{
	376	// no special processing here
	377	return false;
	378	}
	379
	380	#ifdef __WXMSW__
	381	void wxPopupTransientWindow::OnIdle(wxIdleEvent& event)
	382	{
	383	event.Skip();
	384
	385	if (IsShown() && m_child)
	386	{
	387	wxPoint pos = ScreenToClient(wxGetMousePosition());
	388	wxRect rect(GetSize());
	389
	390	if ( rect.Contains(pos) )
	391	{
	392	if ( m_child->HasCapture() )
	393	{
	394	m_child->ReleaseMouse();
	395	}
	396	}
	397	else
	398	{
	399	if ( !m_child->HasCapture() )
	400	{
	401	m_child->CaptureMouse();
	402	}
	403	}
	404	}
	405	}
	406	#endif // __WXMSW__
	407
	408
	409	#if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
	410
	411	// ----------------------------------------------------------------------------
	412	// wxPopupComboWindow
	413	// ----------------------------------------------------------------------------
	414
	415	BEGIN_EVENT_TABLE(wxPopupComboWindow, wxPopupTransientWindow)
	416	EVT_KEY_DOWN(wxPopupComboWindow::OnKeyDown)
	417	END_EVENT_TABLE()
	418
	419	wxPopupComboWindow::wxPopupComboWindow(wxComboCtrl *parent)
	420	: wxPopupTransientWindow(parent)
	421	{
	422	m_combo = parent;
	423	}
	424
	425	bool wxPopupComboWindow::Create(wxComboCtrl *parent)
	426	{
	427	m_combo = parent;
	428
	429	return wxPopupWindow::Create(parent);
	430	}
	431
	432	void wxPopupComboWindow::PositionNearCombo()
	433	{
	434	// the origin point must be in screen coords
	435	wxPoint ptOrigin = m_combo->ClientToScreen(wxPoint(0,0));
	436
	437	#if 0 //def __WXUNIVERSAL__
	438	// account for the fact that (0, 0) is not the top left corner of the
	439	// window: there is also the border
	440	wxRect rectBorders = m_combo->GetRenderer()->
	441	GetBorderDimensions(m_combo->GetBorder());
	442	ptOrigin.x -= rectBorders.x;
	443	ptOrigin.y -= rectBorders.y;
	444	#endif // __WXUNIVERSAL__
	445
	446	// position below or above the combobox: the width is 0 to put it exactly
	447	// below us, not to the left or to the right
	448	Position(ptOrigin, wxSize(0, m_combo->GetSize().y));
	449	}
	450
	451	void wxPopupComboWindow::OnDismiss()
	452	{
	453	m_combo->OnPopupDismiss();
	454	}
	455
	456	void wxPopupComboWindow::OnKeyDown(wxKeyEvent& event)
	457	{
	458	m_combo->ProcessEvent(event);
	459	}
	460
	461	#endif // wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
	462
	463	// ----------------------------------------------------------------------------
	464	// wxPopupWindowHandler
	465	// ----------------------------------------------------------------------------
	466
	467	void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event)
	468	{
	469	// let the window have it first (we're the first event handler in the chain
	470	// of handlers for this window)
	471	if ( m_popup->ProcessLeftDown(event) )
	472	{
	473	return;
	474	}
	475
	476	wxPoint pos = event.GetPosition();
	477
	478	// in non-Univ ports the system manages scrollbars for us
	479	#if defined(__WXUNIVERSAL__) && wxUSE_SCROLLBAR
	480	// scrollbar on which the click occurred
	481	wxWindow *sbar = NULL;
	482	#endif // __WXUNIVERSAL__ && wxUSE_SCROLLBAR
	483
	484	wxWindow win = (wxWindow )event.GetEventObject();
	485
	486	switch ( win->HitTest(pos.x, pos.y) )
	487	{
	488	case wxHT_WINDOW_OUTSIDE:
	489	{
	490	// do the coords translation now as after DismissAndNotify()
	491	// m_popup may be destroyed
	492	wxMouseEvent event2(event);
	493
	494	m_popup->ClientToScreen(&event2.m_x, &event2.m_y);
	495
	496	// clicking outside a popup dismisses it
	497	m_popup->DismissAndNotify();
	498
	499	// dismissing a tooltip shouldn't waste a click, i.e. you
	500	// should be able to dismiss it and press the button with the
	501	// same click, so repost this event to the window beneath us
	502	wxWindow *winUnder = wxFindWindowAtPoint(event2.GetPosition());
	503	if ( winUnder )
	504	{
	505	// translate the event coords to the ones of the window
	506	// which is going to get the event
	507	winUnder->ScreenToClient(&event2.m_x, &event2.m_y);
	508
	509	event2.SetEventObject(winUnder);
	510	wxPostEvent(winUnder, event2);
	511	}
	512	}
	513	break;
	514
	515	#if defined(__WXUNIVERSAL__) && wxUSE_SCROLLBAR
	516	case wxHT_WINDOW_HORZ_SCROLLBAR:
	517	sbar = win->GetScrollbar(wxHORIZONTAL);
	518	break;
	519
	520	case wxHT_WINDOW_VERT_SCROLLBAR:
	521	sbar = win->GetScrollbar(wxVERTICAL);
	522	break;
	523	#endif // __WXUNIVERSAL__ && wxUSE_SCROLLBAR
	524
	525	default:
	526	// forgot to update the switch after adding a new hit test code?
	527	wxFAIL_MSG( _T("unexpected HitTest() return value") );
	528	// fall through
	529
	530	case wxHT_WINDOW_CORNER:
	531	// don't actually know if this one is good for anything, but let it
	532	// pass just in case
	533
	534	case wxHT_WINDOW_INSIDE:
	535	// let the normal processing take place
	536	event.Skip();
	537	break;
	538	}
	539
	540	#if defined(__WXUNIVERSAL__) && wxUSE_SCROLLBAR
	541	if ( sbar )
	542	{
	543	// translate the event coordinates to the scrollbar ones
	544	pos = sbar->ScreenToClient(win->ClientToScreen(pos));
	545
	546	// and give the event to it
	547	wxMouseEvent event2 = event;
	548	event2.m_x = pos.x;
	549	event2.m_y = pos.y;
	550
	551	(void)sbar->GetEventHandler()->ProcessEvent(event2);
	552	}
	553	#endif // __WXUNIVERSAL__ && wxUSE_SCROLLBAR
	554	}
	555
	556	// ----------------------------------------------------------------------------
	557	// wxPopupFocusHandler
	558	// ----------------------------------------------------------------------------
	559
	560	void wxPopupFocusHandler::OnKillFocus(wxFocusEvent& event)
	561	{
	562	// when we lose focus we always disappear - unless it goes to the popup (in
	563	// which case we don't really lose it)
	564	wxWindow *win = event.GetWindow();
	565	while ( win )
	566	{
	567	if ( win == m_popup )
	568	return;
	569	win = win->GetParent();
	570	}
	571
	572	m_popup->DismissAndNotify();
	573	}
	574
	575	void wxPopupFocusHandler::OnKeyDown(wxKeyEvent& event)
	576	{
	577	// we can be associated with the popup itself in which case we should avoid
	578	// infinite recursion
	579	static int s_inside;
	580	wxRecursionGuard guard(s_inside);
	581	if ( guard.IsInside() )
	582	{
	583	event.Skip();
	584	return;
	585	}
	586
	587	// let the window have it first, it might process the keys
	588	if ( !m_popup->GetEventHandler()->ProcessEvent(event) )
	589	{
	590	// by default, dismiss the popup
	591	m_popup->DismissAndNotify();
	592	}
	593	}
	594
	595	#endif // wxUSE_POPUPWIN