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:      $Id$
   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 #include "wx/modalhook.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/app.h"
  20     #include "wx/utils.h"
  21     #include "wx/frame.h"
  22     #include "wx/settings.h"
  23 #endif // WX_PRECOMP
  24
  25 #include "wx/osx/private.h"
  26
  27 static int s_openDialogs = 0;
  28 bool wxDialog::OSXHasModalDialogsOpen()
  29 {
  30     return s_openDialogs > 0;
  31 }
  32
  33 void wxDialog::OSXBeginModalDialog()
  34 {
  35     s_openDialogs++;
  36 }
  37
  38 void wxDialog::OSXEndModalDialog()
  39 {
  40     wxASSERT_MSG( s_openDialogs > 0, "incorrect internal modal dialog count");
  41     s_openDialogs--;
  42 }
  43
  44 void wxDialog::Init()
  45 {
  46     m_modality = wxDIALOG_MODALITY_NONE;
  47     m_eventLoop = NULL;
  48 }
  49
  50 bool wxDialog::Create( wxWindow *parent,
  51     wxWindowID id,
  52     const wxString& title,
  53     const wxPoint& pos,
  54     const wxSize& size,
  55     long style,
  56     const wxString& name )
  57 {
  58     SetExtraStyle( GetExtraStyle() | wxTOPLEVEL_EX_DIALOG );
  59
  60     // All dialogs should really have this style...
  61     style |= wxTAB_TRAVERSAL;
  62
  63     // ...but not these styles
  64     style &= ~(wxYES | wxOK | wxNO); // | wxCANCEL
  65
  66     if ( !wxTopLevelWindow::Create( parent, id, title, pos, size, style, name ) )
  67         return false;
  68
  69     return true;
  70 }
  71
  72 wxDialog::~wxDialog()
  73 {
  74     SendDestroyEvent();
  75
  76     // if the dialog is modal, this will end its event loop
  77     Show(false);
  78 }
  79
  80 // On mac command-stop does the same thing as Esc, let the base class know
  81 // about it
  82 bool wxDialog::IsEscapeKey(const wxKeyEvent& event)
  83 {
  84     if ( event.GetKeyCode() == '.' && event.GetModifiers() == wxMOD_CONTROL )
  85         return true;
  86
  87     return wxDialogBase::IsEscapeKey(event);
  88 }
  89
  90 bool wxDialog::IsModal() const
  91 {
  92     return m_modality != wxDIALOG_MODALITY_NONE;
  93 }
  94
  95 bool wxDialog::Show(bool show)
  96 {
  97     if ( m_modality == wxDIALOG_MODALITY_WINDOW_MODAL )
  98     {
  99         if ( !wxWindow::Show(show) )
 100             // nothing to do
 101             return false;
 102     }
 103     else
 104     {
 105         if ( !wxDialogBase::Show(show) )
 106             // nothing to do
 107             return false;
 108     }
 109
 110     if (show && CanDoLayoutAdaptation())
 111         DoLayoutAdaptation();
 112
 113     if ( show )
 114         // usually will result in TransferDataToWindow() being called
 115         InitDialog();
 116
 117     if ( !show )
 118     {
 119         const int modalityOrig = m_modality;
 120
 121         // complete the 'hiding' before we send the event
 122         m_modality = wxDIALOG_MODALITY_NONE;
 123
 124         switch ( modalityOrig )
 125         {
 126             case wxDIALOG_MODALITY_WINDOW_MODAL:
 127                 EndWindowModal(); // OS X implementation method for cleanup
 128                 SendWindowModalDialogEvent ( wxEVT_WINDOW_MODAL_DIALOG_CLOSED  );
 129                 break;
 130             default:
 131                 break;
 132         }
 133     }
 134
 135     return true;
 136 }
 137
 138 // Replacement for Show(true) for modal dialogs - returns return code
 139 int wxDialog::ShowModal()
 140 {
 141     WX_HOOK_MODAL_DIALOG();
 142
 143     m_modality = wxDIALOG_MODALITY_APP_MODAL;
 144
 145     Show();
 146
 147     wxModalEventLoop modalLoop(this);
 148     m_eventLoop = &modalLoop;
 149
 150     wxDialog::OSXBeginModalDialog();
 151     modalLoop.Run();
 152     wxDialog::OSXEndModalDialog();
 153
 154     m_eventLoop = NULL;
 155
 156     return GetReturnCode();
 157 }
 158
 159 void wxDialog::ShowWindowModal()
 160 {
 161     m_modality = wxDIALOG_MODALITY_WINDOW_MODAL;
 162
 163     Show();
 164
 165     DoShowWindowModal();
 166 }
 167
 168 wxDialogModality wxDialog::GetModality() const
 169 {
 170     return m_modality;
 171 }
 172
 173 // NB: this function (surprisingly) may be called for both modal and modeless
 174 //     dialogs and should work for both of them
 175 void wxDialog::EndModal(int retCode)
 176 {
 177     if ( m_eventLoop )
 178         m_eventLoop->Exit(retCode);
 179
 180     SetReturnCode(retCode);
 181     Show(false);
 182 }
 183