bool wxWizard::ShowPage(wxWizardPage *page, bool goingForward)
{
wxASSERT_MSG( page != m_page, wxT("this is useless") );
wxSizerFlags flags(1);
flags.Border(wxALL, m_border).Expand();
if ( !m_started )
{
if ( m_usingSizer )
{
m_sizerBmpAndPage->Add(m_sizerPage, flags);
// now that our layout is computed correctly, hide the pages
// artificially shown in wxWizardSizer::Insert() back again
m_sizerPage->HidePages();
}
}
// remember the old bitmap (if any) to compare with the new one later
wxBitmap bmpPrev;
// check for previous page
if ( m_page )
{
// send the event to the old page
wxWizardEvent event(wxEVT_WIZARD_PAGE_CHANGING, GetId(),
goingForward, m_page);
if ( m_page->GetEventHandler()->ProcessEvent(event) &&
!event.IsAllowed() )
{
// vetoed by the page
return false;
}
m_page->Hide();
bmpPrev = m_page->GetBitmap();
if ( !m_usingSizer )
m_sizerBmpAndPage->Detach(m_page);
}
// set the new page
m_page = page;
// is this the end?
if ( !m_page )
{
// terminate successfully
if ( IsModal() )
{
EndModal(wxID_OK);
}
else
{
SetReturnCode(wxID_OK);
Hide();
}
// and notify the user code (this is especially useful for modeless
// wizards)
wxWizardEvent event(wxEVT_WIZARD_FINISHED, GetId(), false, 0);
(void)GetEventHandler()->ProcessEvent(event);
return true;
}
// position and show the new page
(void)m_page->TransferDataToWindow();
if ( m_usingSizer )
{
// wxWizardSizer::RecalcSizes wants to be called when m_page changes
m_sizerPage->RecalcSizes();
}
else // pages are not managed by the sizer
{
m_sizerBmpAndPage->Add(m_page, flags);
m_sizerBmpAndPage->SetItemMinSize(m_page, GetPageSize());
}
#if wxUSE_STATBMP
// update the bitmap if:it changed
wxBitmap bmp;
if ( m_statbmp )
{
bmp = m_page->GetBitmap();
if ( !bmp.Ok() )
bmp = m_bitmap;
if ( !bmpPrev.Ok() )
bmpPrev = m_bitmap;
if (!GetBitmapPlacement())
{
if ( !bmp.IsSameAs(bmpPrev) )
m_statbmp->SetBitmap(bmp);
}
}
#endif // wxUSE_STATBMP
// and update the buttons state
m_btnPrev->Enable(HasPrevPage(m_page));
const bool hasNext = HasNextPage(m_page);
const wxString label = hasNext ? _("&Next >") : _("&Finish");
if ( label != m_btnNext->GetLabel() )
m_btnNext->SetLabel(label);
m_btnNext->SetDefault();
// send the change event to the new page now
wxWizardEvent event(wxEVT_WIZARD_PAGE_CHANGED, GetId(), goingForward, m_page);
(void)m_page->GetEventHandler()->ProcessEvent(event);
// and finally show it
m_page->Show();
m_page->SetFocus();
if ( !m_usingSizer )
m_sizerBmpAndPage->Layout();
if ( !m_started )
{
m_started = true;
DoWizardLayout();
}
if (GetBitmapPlacement() && m_statbmp)
{
ResizeBitmap(bmp);
if ( !bmp.IsSameAs(bmpPrev) )
m_statbmp->SetBitmap(bmp);
if (m_usingSizer)
m_sizerPage->RecalcSizes();
}
return true;
}
bool wxWizardEx::ShowPage(wxWizardPageEx *page, bool goingForward)
{
wxASSERT_MSG( page != m_page, wxT("this is useless") );
wxSizerFlags flags(1);
flags.Border(wxALL, m_border).Expand();
if ( !m_started )
{
if ( m_usingSizer )
{
m_sizerBmpAndPage->Add(m_sizerPage, flags);
// now that our layout is computed correctly, hide the pages
// artificially shown in wxWizardSizer::Insert() back again
m_sizerPage->HidePages();
}
}
// we'll use this to decide whether we have to change the label of this
// button or not (initially the label is "Next")
bool btnLabelWasNext = true;
// remember the old bitmap (if any) to compare with the new one later
wxBitmap bmpPrev;
// check for previous page
if ( m_page )
{
// send the event to the old page
wxWizardExEvent event(wxEVT_WIZARDEX_PAGE_CHANGING, GetId(), goingForward, m_page);
if ( m_page->GetEventHandler()->ProcessEvent(event) &&
!event.IsAllowed() )
{
// vetoed by the page
return false;
}
m_page->Hide();
btnLabelWasNext = HasNextPage(m_page);
if ( !m_usingSizer )
m_sizerBmpAndPage->Detach(m_page);
}
// set the new page
m_page = page;
// is this the end?
if ( !m_page )
{
// terminate successfully
if ( IsModal() )
{
EndModal(wxID_OK);
}
else
{
SetReturnCode(wxID_OK);
Hide();
}
// and notify the user code (this is especially useful for modeless
// wizards)
wxWizardEvent event(wxEVT_WIZARDEX_FINISHED, GetId(), false, 0);
(void)GetEventHandler()->ProcessEvent(event);
return true;
}
// position and show the new page
(void)m_page->TransferDataToWindow();
if ( m_usingSizer )
{
// wxWizardSizer::RecalcSizes wants to be called when m_page changes
m_sizerPage->RecalcSizes();
}
else // pages are not managed by the sizer
{
m_sizerBmpAndPage->Add(m_page, flags);
m_sizerBmpAndPage->SetItemMinSize(m_page, GetPageSize());
}
// and update the buttons state
m_btnPrev->Enable(HasPrevPage(m_page));
bool hasNext = HasNextPage(m_page);
if ( btnLabelWasNext != hasNext )
{
m_btnNext->SetLabel(hasNext ? _("&Next >") : _("&Finish"));
}
// nothing to do: the label was already correct
m_btnNext->SetDefault();
// send the change event to the new page now
wxWizardExEvent event(wxEVT_WIZARDEX_PAGE_CHANGED, GetId(), goingForward, m_page);
(void)m_page->GetEventHandler()->ProcessEvent(event);
// and finally show it
m_page->Show();
m_page->SetFocus();
if ( !m_usingSizer )
m_sizerBmpAndPage->Layout();
if ( !m_started )
{
m_started = true;
if ( wxSystemSettings::GetScreenType() > wxSYS_SCREEN_PDA )
{
GetSizer()->SetSizeHints(this);
if ( m_posWizard == wxDefaultPosition )
CentreOnScreen();
}
}
return true;
}
