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 // Copyright:   (c) Stefan Csomor
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/dialog.h"
  14 #include "wx/evtloop.h"
  15 #include "wx/modalhook.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 void wxDialog::Init()
  44 {
  45     m_modality = wxDIALOG_MODALITY_NONE;
  46     m_eventLoop = NULL;
  47 }
  48
  49 bool wxDialog::Create( wxWindow *parent,
  50     wxWindowID id,
  51     const wxString& title,
  52     const wxPoint& pos,
  53     const wxSize& size,
  54     long style,
  55     const wxString& name )
  56 {
  57     SetExtraStyle( GetExtraStyle() | wxTOPLEVEL_EX_DIALOG );
  58
  59     // All dialogs should really have this style...
  60     style |= wxTAB_TRAVERSAL;
  61
  62     // ...but not these styles
  63     style &= ~(wxYES | wxOK | wxNO); // | wxCANCEL
  64
  65     if ( !wxTopLevelWindow::Create( parent, id, title, pos, size, style, name ) )
  66         return false;
  67
  68     return true;
  69 }
  70
  71 wxDialog::~wxDialog()
  72 {
  73     SendDestroyEvent();
  74
  75     // if the dialog is modal, this will end its event loop
  76     Show(false);
  77 }
  78
  79 // On mac command-stop does the same thing as Esc, let the base class know
  80 // about it
  81 bool wxDialog::IsEscapeKey(const wxKeyEvent& event)
  82 {
  83     if ( event.GetKeyCode() == '.' && event.GetModifiers() == wxMOD_CONTROL )
  84         return true;
  85
  86     return wxDialogBase::IsEscapeKey(event);
  87 }
  88
  89 bool wxDialog::IsModal() const
  90 {
  91     return m_modality != wxDIALOG_MODALITY_NONE;
  92 }
  93
  94 bool wxDialog::Show(bool show)
  95 {
  96     if ( m_modality == wxDIALOG_MODALITY_WINDOW_MODAL )
  97     {
  98         if ( !wxWindow::Show(show) )
  99             // nothing to do
 100             return false;
 101     }
 102     else
 103     {
 104         if ( !wxDialogBase::Show(show) )
 105             // nothing to do
 106             return false;
 107     }
 108
 109     if (show && CanDoLayoutAdaptation())
 110         DoLayoutAdaptation();
 111
 112     if ( show )
 113         // usually will result in TransferDataToWindow() being called
 114         InitDialog();
 115
 116     if ( !show )
 117     {
 118         const int modalityOrig = m_modality;
 119
 120         // complete the 'hiding' before we send the event
 121         m_modality = wxDIALOG_MODALITY_NONE;
 122
 123         switch ( modalityOrig )
 124         {
 125             case wxDIALOG_MODALITY_WINDOW_MODAL:
 126                 EndWindowModal(); // OS X implementation method for cleanup
 127                 SendWindowModalDialogEvent ( wxEVT_WINDOW_MODAL_DIALOG_CLOSED  );
 128                 break;
 129             default:
 130                 break;
 131         }
 132     }
 133
 134     return true;
 135 }
 136
 137 // Replacement for Show(true) for modal dialogs - returns return code
 138 int wxDialog::ShowModal()
 139 {
 140     WX_HOOK_MODAL_DIALOG();
 141
 142     m_modality = wxDIALOG_MODALITY_APP_MODAL;
 143
 144     Show();
 145
 146     wxModalEventLoop modalLoop(this);
 147     m_eventLoop = &modalLoop;
 148
 149     wxDialog::OSXBeginModalDialog();
 150     modalLoop.Run();
 151     wxDialog::OSXEndModalDialog();
 152
 153     m_eventLoop = NULL;
 154
 155     return GetReturnCode();
 156 }
 157
 158 void wxDialog::ShowWindowModal()
 159 {
 160     m_modality = wxDIALOG_MODALITY_WINDOW_MODAL;
 161
 162     Show();
 163
 164     DoShowWindowModal();
 165 }
 166
 167 wxDialogModality wxDialog::GetModality() const
 168 {
 169     return m_modality;
 170 }
 171
 172 // NB: this function (surprisingly) may be called for both modal and modeless
 173 //     dialogs and should work for both of them
 174 void wxDialog::EndModal(int retCode)
 175 {
 176     if ( m_eventLoop )
 177         m_eventLoop->Exit(retCode);
 178
 179     SetReturnCode(retCode);
 180     Show(false);
 181 }
 182