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This handlers mustn't be deleted when a popup is dismissed since they can

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be the ones doing the dismissing. Also, m_focus must point to the window
with focus.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33967 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Michael Wetherell
2005-05-06 13:39:21 +00:00
parent 068993c7ef
commit 0bf16170cc
1 changed files with 23 additions and 32 deletions
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55
src/common/popupcmn.cpp
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@@ -192,14 +192,21 @@ wxPopupTransientWindow::wxPopupTransientWindow(wxWindow *parent, int style)
wxPopupTransientWindow::~wxPopupTransientWindow()
{
PopHandlers();
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_handlerPopup && !m_child->RemoveEventHandler(m_handlerPopup) )
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
@@ -212,29 +219,14 @@ void wxPopupTransientWindow::PopHandlers()
m_child = NULL;
}
#ifdef __WXMSW__
if ( m_focus )
{
if ( m_handlerFocus && !m_focus->RemoveEventHandler(m_handlerFocus) )
if ( !m_focus->RemoveEventHandler(m_handlerFocus) )
{
// see above
m_handlerFocus = NULL;
}
}
#else
if ( m_handlerFocus && !RemoveEventHandler(m_handlerFocus) )
{
// see above
m_handlerFocus = NULL;
}
#endif
// delete the handlers, they'll be created as necessary in Popup()
delete m_handlerPopup;
m_handlerPopup = NULL;
delete m_handlerFocus;
m_handlerFocus = NULL;
m_focus = NULL;
}
@@ -252,12 +244,12 @@ void wxPopupTransientWindow::Popup(wxWindow *winFocus)
Show();
// There is is a problem if these are still valid
wxASSERT_MSG(!m_handlerPopup, wxT("Popup handler not deleted"));
wxASSERT_MSG(!m_handlerFocus, wxT("Focus handler not deleted"));
// There is is a problem if these are still in use
wxASSERT(!m_handlerFocus || !m_handlerFocus->GetNextHandler());
wxASSERT(!m_handlerPopup || !m_handlerPopup->GetNextHandler());
delete m_handlerPopup;
m_handlerPopup = new wxPopupWindowHandler(this);
if (!m_handlerPopup)
m_handlerPopup = new wxPopupWindowHandler(this);
m_child->PushEventHandler(m_handlerPopup);
@@ -269,20 +261,19 @@ void wxPopupTransientWindow::Popup(wxWindow *winFocus)
// subclass the window which has the focus, and not winFocus passed in or
// otherwise everything else breaks down
m_focus = FindFocus();
#elif __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 )
{
delete m_handlerFocus;
m_handlerFocus = new wxPopupFocusHandler(this);
if (!m_handlerFocus)
m_handlerFocus = new wxPopupFocusHandler(this);
m_focus->PushEventHandler(m_handlerFocus);
}
#else
// GTK+ catches the activate events from the popup
// window, not the focus events from the child window
delete m_handlerFocus;
m_handlerFocus = new wxPopupFocusHandler(this);
PushEventHandler(m_handlerFocus);
#endif // __WXMSW__
// catch destroy events, if you close a program with a popup shown in MSW
// you get a segfault if m_child or m_focus are deleted before this is