65f3f920ba
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45272 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
345 lines
9.6 KiB
C++
345 lines
9.6 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/os2/dialog.cpp
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// Purpose: wxDialog class
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// Author: David Webster
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// Modified by:
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// Created: 10/14/99
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// RCS-ID: $Id$
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// Copyright: (c) David Webster
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#include "wx/dialog.h"
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#ifndef WX_PRECOMP
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#include "wx/utils.h"
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#include "wx/frame.h"
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#include "wx/app.h"
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#include "wx/settings.h"
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#include "wx/intl.h"
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#include "wx/log.h"
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#endif
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#include "wx/os2/private.h"
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#include "wx/evtloop.h"
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#include "wx/ptr_scpd.h"
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#define wxDIALOG_DEFAULT_X 300
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#define wxDIALOG_DEFAULT_Y 300
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#define wxDIALOG_DEFAULT_WIDTH 500
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#define wxDIALOG_DEFAULT_HEIGHT 500
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IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
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// ----------------------------------------------------------------------------
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// wxDialogModalData
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// ----------------------------------------------------------------------------
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// this is simply a container for any data we need to implement modality which
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// allows us to avoid changing wxDialog each time the implementation changes
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class wxDialogModalData
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{
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public:
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wxDialogModalData(wxDialog *dialog) : m_evtLoop(dialog) { }
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void RunLoop()
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{
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m_evtLoop.Run();
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}
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void ExitLoop()
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{
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m_evtLoop.Exit();
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}
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private:
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wxModalEventLoop m_evtLoop;
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};
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wxDEFINE_TIED_SCOPED_PTR_TYPE(wxDialogModalData);
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// wxDialog construction
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// ----------------------------------------------------------------------------
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void wxDialog::Init()
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{
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m_pOldFocus = (wxWindow *)NULL;
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m_isShown = false;
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m_pWindowDisabler = (wxWindowDisabler *)NULL;
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m_modalData = NULL;
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SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
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} // end of wxDialog::Init
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bool wxDialog::Create( wxWindow* pParent,
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wxWindowID vId,
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const wxString& rsTitle,
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const wxPoint& rPos,
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const wxSize& rSize,
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long lStyle,
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const wxString& rsName )
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{
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Init();
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SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
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//
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// Save focus before doing anything which can potentially change it
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//
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m_pOldFocus = FindFocus();
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//
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// All dialogs should really have this style
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//
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lStyle |= wxTAB_TRAVERSAL;
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if (!wxTopLevelWindow::Create( pParent
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,vId
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,rsTitle
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,rPos
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,rSize
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,lStyle
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,rsName
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))
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return false;
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SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
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//
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// Must defer setting the title until after dialog is created and sized
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//
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if (!rsTitle.IsNull())
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SetTitle(rsTitle);
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return true;
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} // end of wxDialog::Create
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#if WXWIN_COMPATIBILITY_2_6
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// deprecated ctor
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wxDialog::wxDialog(wxWindow *parent,
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const wxString& title,
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bool WXUNUSED(modal),
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int x,
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int y,
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int w,
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int h,
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long style,
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const wxString& name)
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{
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Init();
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Create(parent, wxID_ANY, title, wxPoint(x, y), wxSize(w, h), style, name);
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}
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void wxDialog::SetModal(bool WXUNUSED(bFlag))
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{
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// nothing to do, obsolete method
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} // end of wxDialog::SetModal
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#endif // WXWIN_COMPATIBILITY_2_6
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wxDialog::~wxDialog()
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{
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m_isBeingDeleted = true;
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// this will also reenable all the other windows for a modal dialog
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Show(false);
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} // end of wxDialog::~wxDialog
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// ----------------------------------------------------------------------------
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// showing the dialogs
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// ----------------------------------------------------------------------------
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#if WXWIN_COMPATIBILITY_2_6
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bool wxDialog::IsModalShowing() const
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{
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return IsModal();
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} // end of wxDialog::IsModalShowing
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#endif // WXWIN_COMPATIBILITY_2_6
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wxWindow *wxDialog::FindSuitableParent() const
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{
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// first try to use the currently active window
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HWND hwndFg = ::WinQueryActiveWindow(HWND_DESKTOP);
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wxWindow *parent = hwndFg ? wxFindWinFromHandle((WXHWND)hwndFg)
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: NULL;
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if ( !parent )
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{
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// next try the main app window
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parent = wxTheApp->GetTopWindow();
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}
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// finally, check if the parent we found is really suitable
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if ( !parent || parent == (wxWindow *)this || !parent->IsShown() )
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{
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// don't use this one
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parent = NULL;
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}
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return parent;
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}
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bool wxDialog::Show( bool bShow )
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{
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if ( bShow == IsShown() )
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return false;
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if (!bShow && m_modalData )
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{
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// we need to do this before calling wxDialogBase version because if we
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// had disabled other app windows, they must be reenabled right now as
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// if they stay disabled Windows will activate another window (one
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// which is enabled, anyhow) when we're hidden in the base class Show()
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// and we will lose activation
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m_modalData->ExitLoop();
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#if 0
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if (m_pWindowDisabler)
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{
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delete m_pWindowDisabler;
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m_pWindowDisabler = NULL;
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}
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#endif
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}
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if (bShow)
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{
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// this usually will result in TransferDataToWindow() being called
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// which will change the controls values so do it before showing as
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// otherwise we could have some flicker
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InitDialog();
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}
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wxDialogBase::Show(bShow);
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wxString title = GetTitle();
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if (!title.empty())
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::WinSetWindowText((HWND)GetHwnd(), title.c_str());
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if ( bShow )
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{
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// dialogs don't get WM_SIZE message after creation unlike most (all?)
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// other windows and so could start their life not laid out correctly
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// if we didn't call Layout() from here
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//
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// NB: normally we should call it just the first time but doing it
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// every time is simpler than keeping a flag
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Layout();
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}
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return true;
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} // end of wxDialog::Show
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//
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// Replacement for Show(true) for modal dialogs - returns return code
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//
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int wxDialog::ShowModal()
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{
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wxASSERT_MSG( !IsModal(), _T("wxDialog::ShowModal() reentered?") );
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m_endModalCalled = false;
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Show();
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// EndModal may have been called from InitDialog handler (called from
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// inside Show()), which would cause an infinite loop if we didn't take it
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// into account
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if ( !m_endModalCalled )
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{
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// modal dialog needs a parent window, so try to find one
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wxWindow *parent = GetParent();
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if ( !parent )
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{
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parent = FindSuitableParent();
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}
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// remember where the focus was
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wxWindow *oldFocus = m_pOldFocus;
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if ( !oldFocus )
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{
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// VZ: do we really want to do this?
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oldFocus = parent;
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}
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// We have to remember the HWND because we need to check
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// the HWND still exists (oldFocus can be garbage when the dialog
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// exits, if it has been destroyed)
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HWND hwndOldFocus = oldFocus ? GetHwndOf(oldFocus) : NULL;
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//
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// Before entering the modal loop, reset the "is in OnIdle()" flag (see
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// comment in app.cpp)
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//
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extern bool gbInOnIdle;
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bool bWasInOnIdle = gbInOnIdle;
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gbInOnIdle = false;
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// enter and run the modal loop
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{
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wxDialogModalDataTiedPtr modalData(&m_modalData,
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new wxDialogModalData(this));
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modalData->RunLoop();
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}
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gbInOnIdle = bWasInOnIdle;
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// and restore focus
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// Note that this code MUST NOT access the dialog object's data
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// in case the object has been deleted (which will be the case
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// for a modal dialog that has been destroyed before calling EndModal).
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if ( oldFocus && (oldFocus != this) && ::WinIsWindow(vHabmain, hwndOldFocus))
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{
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// This is likely to prove that the object still exists
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if (wxFindWinFromHandle((WXHWND) hwndOldFocus) == oldFocus)
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oldFocus->SetFocus();
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}
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}
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return GetReturnCode();
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} // end of wxDialog::ShowModal
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void wxDialog::EndModal(
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int nRetCode
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)
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{
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wxASSERT_MSG( IsModal(), _T("EndModal() called for non modal dialog") );
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m_endModalCalled = true;
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SetReturnCode(nRetCode);
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Hide();
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} // end of wxDialog::EndModal
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MRESULT wxDialog::OS2WindowProc( WXUINT uMessage, WXWPARAM wParam, WXLPARAM lParam )
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{
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MRESULT rc = 0;
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bool bProcessed = false;
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switch (uMessage)
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{
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case WM_CLOSE:
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//
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// If we can't close, tell the system that we processed the
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// message - otherwise it would close us
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//
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bProcessed = !Close();
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break;
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}
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if (!bProcessed)
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rc = wxWindow::OS2WindowProc( uMessage
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,wParam
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,lParam
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);
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return rc;
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} // end of wxDialog::OS2WindowProc
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