src/osx/dialog_osx.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/dialog_osx.cpp
   3 // Purpose:     wxDialog class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id: dialog.cpp 54820 2008-07-29 20:04:11Z SC $
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/dialog.h"
  15 #include "wx/evtloop.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/app.h"
  19     #include "wx/utils.h"
  20     #include "wx/frame.h"
  21     #include "wx/settings.h"
  22 #endif // WX_PRECOMP
  23
  24 #include "wx/osx/private.h"
  25
  26 static int s_openDialogs = 0;
  27 bool wxDialog::OSXHasModalDialogsOpen()
  28 {
  29     return s_openDialogs > 0;
  30 }
  31
  32 void wxDialog::OSXBeginModalDialog()
  33 {
  34     s_openDialogs++;
  35 }
  36
  37 void wxDialog::OSXEndModalDialog()
  38 {
  39     wxASSERT_MSG( s_openDialogs > 0, "incorrect internal modal dialog count");
  40     s_openDialogs--;
  41 }
  42
  43
  44 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
  45
  46 void wxDialog::Init()
  47 {
  48     m_modality = wxDIALOG_MODALITY_NONE;
  49     m_eventLoop = NULL;
  50 }
  51
  52 bool wxDialog::Create( wxWindow *parent,
  53     wxWindowID id,
  54     const wxString& title,
  55     const wxPoint& pos,
  56     const wxSize& size,
  57     long style,
  58     const wxString& name )
  59 {
  60     SetExtraStyle( GetExtraStyle() | wxTOPLEVEL_EX_DIALOG );
  61
  62     // All dialogs should really have this style...
  63     style |= wxTAB_TRAVERSAL;
  64
  65     // ...but not these styles
  66     style &= ~(wxYES | wxOK | wxNO); // | wxCANCEL
  67
  68     if ( !wxTopLevelWindow::Create( parent, id, title, pos, size, style, name ) )
  69         return false;
  70
  71     return true;
  72 }
  73
  74 wxDialog::~wxDialog()
  75 {
  76     SendDestroyEvent();
  77
  78     // if the dialog is modal, this will end its event loop
  79     Show(false);
  80 }
  81
  82 // On mac command-stop does the same thing as Esc, let the base class know
  83 // about it
  84 bool wxDialog::IsEscapeKey(const wxKeyEvent& event)
  85 {
  86     if ( event.GetKeyCode() == '.' && event.GetModifiers() == wxMOD_CMD )
  87         return true;
  88
  89     return wxDialogBase::IsEscapeKey(event);
  90 }
  91
  92 bool wxDialog::IsModal() const
  93 {
  94     return m_modality != wxDIALOG_MODALITY_NONE;
  95 }
  96
  97 bool wxDialog::Show(bool show)
  98 {
  99     if ( m_modality == wxDIALOG_MODALITY_WINDOW_MODAL )
 100     {
 101         if ( !wxWindow::Show(show) )
 102             // nothing to do
 103             return false;
 104     }
 105     else
 106     {
 107         if ( !wxDialogBase::Show(show) )
 108             // nothing to do
 109             return false;
 110     }
 111
 112     if (show && CanDoLayoutAdaptation())
 113         DoLayoutAdaptation();
 114
 115     if ( show )
 116         // usually will result in TransferDataToWindow() being called
 117         InitDialog();
 118
 119     if ( !show )
 120     {
 121         switch( m_modality )
 122         {
 123             case wxDIALOG_MODALITY_WINDOW_MODAL:
 124                 EndWindowModal(); // OS X implementation method for cleanup
 125                 SendWindowModalDialogEvent ( wxEVT_WINDOW_MODAL_DIALOG_CLOSED  );
 126                 break;
 127             default:
 128                 break;
 129         }
 130         m_modality = wxDIALOG_MODALITY_NONE;
 131     }
 132
 133     return true;
 134 }
 135
 136 // Replacement for Show(true) for modal dialogs - returns return code
 137 int wxDialog::ShowModal()
 138 {
 139     m_modality = wxDIALOG_MODALITY_APP_MODAL;
 140
 141     Show();
 142
 143     wxModalEventLoop modalLoop(this);
 144     m_eventLoop = &modalLoop;
 145
 146     wxDialog::OSXBeginModalDialog();
 147     modalLoop.Run();
 148     wxDialog::OSXEndModalDialog();
 149
 150     m_eventLoop = NULL;
 151
 152     return GetReturnCode();
 153 }
 154
 155 void wxDialog::ShowWindowModal()
 156 {
 157     m_modality = wxDIALOG_MODALITY_WINDOW_MODAL;
 158
 159     Show();
 160
 161     DoShowWindowModal();
 162 }
 163
 164 wxDialogModality wxDialog::GetModality() const
 165 {
 166     return m_modality;
 167 }
 168
 169 // NB: this function (surprisingly) may be called for both modal and modeless
 170 //     dialogs and should work for both of them
 171 void wxDialog::EndModal(int retCode)
 172 {
 173     if ( m_eventLoop )
 174         m_eventLoop->Exit(retCode);
 175
 176     SetReturnCode(retCode);
 177     Show(false);
 178 }
 179