src/mac/carbon/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.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 #ifdef __GNUG__
  13 #pragma implementation "dialog.h"
  14 #endif
  15
  16 #include "wx/dialog.h"
  17 #include "wx/utils.h"
  18 #include "wx/frame.h"
  19 #include "wx/app.h"
  20 #include "wx/settings.h"
  21
  22 #include "wx/mac/uma.h"
  23
  24 // Lists to keep track of windows, so we can disable/enable them
  25 // for modal dialogs
  26 wxList wxModalDialogs;
  27 //wxList wxModelessWindows;  // Frames and modeless dialogs
  28 extern wxList wxPendingDelete;
  29
  30 #if !USE_SHARED_LIBRARY
  31 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
  32
  33 BEGIN_EVENT_TABLE(wxDialog, wxDialogBase)
  34   EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  35   EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  36   EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  37
  38   EVT_CHAR_HOOK(wxDialog::OnCharHook)
  39
  40   EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
  41
  42   EVT_CLOSE(wxDialog::OnCloseWindow)
  43 END_EVENT_TABLE()
  44
  45 #endif
  46
  47 wxDialog::wxDialog()
  48 {
  49       m_isShown = FALSE;
  50     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
  51 }
  52
  53 bool wxDialog::Create(wxWindow *parent, 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     if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style, name) )
  66         return FALSE;
  67
  68     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
  69
  70     return TRUE;
  71 }
  72
  73 void wxDialog::SetModal(bool flag)
  74 {
  75     if ( flag )
  76     {
  77         m_windowStyle |= wxDIALOG_MODAL;
  78
  79         wxModelessWindows.DeleteObject(this);
  80 #if TARGET_CARBON
  81         SetWindowModality( (WindowRef) MacGetWindowRef() , kWindowModalityAppModal , NULL ) ;
  82 #endif
  83     }
  84     else
  85     {
  86         m_windowStyle &= ~wxDIALOG_MODAL;
  87
  88         wxModelessWindows.Append(this);
  89     }
  90 }
  91
  92 wxDialog::~wxDialog()
  93 {
  94     m_isBeingDeleted = TRUE;
  95     Show(FALSE);
  96 }
  97
  98 // By default, pressing escape cancels the dialog , on mac command-stop does the same thing
  99 void wxDialog::OnCharHook(wxKeyEvent& event)
 100 {
 101     if (( event.m_keyCode == WXK_ESCAPE ||
 102         ( event.m_keyCode == '.' && event.MetaDown() ) )
 103         && FindWindow(wxID_CANCEL) )
 104     {
 105         // Behaviour changed in 2.0: we'll send a Cancel message
 106         // to the dialog instead of Close.
 107         wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 108         cancelEvent.SetEventObject( this );
 109         GetEventHandler()->ProcessEvent(cancelEvent);
 110
 111         return;
 112     }
 113     // We didn't process this event.
 114     event.Skip();
 115 }
 116
 117 bool wxDialog::IsModal() const
 118 {
 119     return (GetWindowStyleFlag() & wxDIALOG_MODAL) != 0;
 120 }
 121
 122
 123 bool wxDialog::IsModalShowing() const
 124 {
 125     return wxModalDialogs.Find((wxDialog *)this) != NULL; // const_cast
 126 }
 127
 128 bool wxDialog::Show(bool show)
 129 {
 130     if ( !wxDialogBase::Show(show) )
 131     {
 132         // nothing to do
 133         return FALSE;
 134     }
 135
 136     if ( show )
 137     {
 138         // usually will result in TransferDataToWindow() being called
 139         InitDialog();
 140     }
 141
 142     if ( IsModal() )
 143     {
 144         if ( show )
 145         {
 146             DoShowModal();
 147         }
 148         else // end of modal dialog
 149         {
 150             // this will cause IsModalShowing() return FALSE and our local
 151             // message loop will terminate
 152             wxModalDialogs.DeleteObject(this);
 153         }
 154     }
 155
 156     return TRUE;
 157 }
 158
 159 #if !TARGET_CARBON
 160 extern bool s_macIsInModalLoop ;
 161 #endif
 162
 163 void wxDialog::DoShowModal()
 164 {
 165     wxCHECK_RET( !IsModalShowing(), _T("DoShowModal() called twice") );
 166
 167     wxModalDialogs.Append(this);
 168
 169 #if TARGET_CARBON
 170     BeginAppModalStateForWindow(  (WindowRef) MacGetWindowRef()) ;
 171 #else
 172     // TODO : test whether parent gets disabled
 173     bool formerModal = s_macIsInModalLoop ;
 174     s_macIsInModalLoop = true ;
 175 #endif
 176     while ( IsModalShowing() )
 177     {
 178         wxTheApp->MacDoOneEvent() ;
 179         // calls process idle itself
 180     }
 181
 182 #if TARGET_CARBON
 183     EndAppModalStateForWindow( (WindowRef) MacGetWindowRef() ) ;
 184 #else
 185     // TODO probably reenable the parent window if any
 186     s_macIsInModalLoop = formerModal ;
 187 #endif
 188 }
 189
 190
 191 // Replacement for Show(TRUE) for modal dialogs - returns return code
 192 int wxDialog::ShowModal()
 193 {
 194     if ( !IsModal() )
 195     {
 196         SetModal(TRUE);
 197     }
 198
 199     Show(TRUE);
 200     return GetReturnCode();
 201 }
 202
 203 // NB: this function (surprizingly) may be called for both modal and modeless
 204 //     dialogs and should work for both of them
 205 void wxDialog::EndModal(int retCode)
 206 {
 207   SetReturnCode(retCode);
 208   Show(FALSE);
 209 }
 210
 211 // Standard buttons
 212 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 213 {
 214   if ( Validate() && TransferDataFromWindow() )
 215   {
 216       EndModal(wxID_OK);
 217   }
 218 }
 219
 220 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 221 {
 222   if (Validate())
 223     TransferDataFromWindow();
 224   // TODO probably need to disable the Apply button until things change again
 225 }
 226
 227 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 228 {
 229     EndModal(wxID_CANCEL);
 230 }
 231
 232 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 233 {
 234     // We'll send a Cancel message by default,
 235     // which may close the dialog.
 236     // Check for looping if the Cancel event handler calls Close().
 237
 238     // Note that if a cancel button and handler aren't present in the dialog,
 239     // nothing will happen when you close the dialog via the window manager, or
 240     // via Close().
 241     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 242     // created on the stack.
 243     // However, this does mean that calling dialog->Close() won't delete the dialog
 244     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 245     // sure to destroy the dialog.
 246     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 247
 248     static wxList closing;
 249
 250     if ( closing.Member(this) )
 251         return;
 252
 253     closing.Append(this);
 254
 255     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 256     cancelEvent.SetEventObject( this );
 257     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 258
 259     closing.DeleteObject(this);
 260 }
 261
 262 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 263 {
 264   SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 265   Refresh();
 266 }
 267