int wxBookCtrlBase::DoSetSelection(size_t n, int flags)
{
wxCHECK_MSG( n < GetPageCount(), wxNOT_FOUND,
wxT("invalid page index in wxBookCtrlBase::DoSetSelection()") );
const int oldSel = GetSelection();
if ( n != (size_t)oldSel )
{
wxBookCtrlEvent *event = CreatePageChangingEvent();
bool allowed = false;
if ( flags & SetSelection_SendEvent )
{
event->SetSelection(n);
event->SetOldSelection(oldSel);
event->SetEventObject(this);
allowed = !GetEventHandler()->ProcessEvent(*event) || event->IsAllowed();
}
if ( !(flags & SetSelection_SendEvent) || allowed)
{
if ( oldSel != wxNOT_FOUND )
m_pages[oldSel]->Hide();
wxWindow *page = m_pages[n];
page->SetSize(GetPageRect());
page->Show();
// change selection now to ignore the selection change event
UpdateSelectedPage(n);
if ( flags & SetSelection_SendEvent )
{
// program allows the page change
MakeChangedEvent(*event);
(void)GetEventHandler()->ProcessEvent(*event);
}
}
delete event;
}
return oldSel;
}
int wxBookCtrlBase::DoSetSelection(size_t n, int flags)
{
wxCHECK_MSG( n < GetPageCount(), wxNOT_FOUND,
wxT("invalid page index in wxBookCtrlBase::DoSetSelection()") );
const int oldSel = GetSelection();
if ( n != (size_t)oldSel )
{
wxBookCtrlEvent *event = CreatePageChangingEvent();
bool allowed = true;
if ( flags & SetSelection_SendEvent )
{
event->SetSelection(n);
event->SetOldSelection(oldSel);
event->SetEventObject(this);
allowed = !GetEventHandler()->ProcessEvent(*event) || event->IsAllowed();
}
if ( allowed )
{
if ( oldSel != wxNOT_FOUND )
{
if ( wxWindow* const oldPage = TryGetNonNullPage(oldSel) )
{
DoShowPage(oldPage, false);
}
}
if ( wxWindow* const page = TryGetNonNullPage(n) )
{
page->SetSize(GetPageRect());
DoShowPage(page, true);
}
// change selection now to ignore the selection change event
m_selection = n;
UpdateSelectedPage(n);
if ( flags & SetSelection_SendEvent )
{
// program allows the page change
MakeChangedEvent(*event);
(void)GetEventHandler()->ProcessEvent(*event);
}
}
else
{
// Selection in the control might have already had changed.
if ( oldSel != wxNOT_FOUND )
{
m_selection = oldSel;
UpdateSelectedPage(oldSel);
}
}
delete event;
}
return oldSel;
}