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     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
  61
  62
  63     if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style, name) )
  64         return FALSE;
  65
  66     MacCreateRealWindow( title , pos , size , MacRemoveBordersFromStyle(style)  , name ) ;
  67
  68     m_macWindowBackgroundTheme = kThemeBrushDialogBackgroundActive ;
  69     SetThemeWindowBackground( (WindowRef) m_macWindow , m_macWindowBackgroundTheme , false ) ;
  70
  71     return TRUE;
  72 }
  73
  74 void wxDialog::SetModal(bool flag)
  75 {
  76     if ( flag )
  77     {
  78         m_windowStyle |= wxDIALOG_MODAL;
  79
  80         wxModelessWindows.DeleteObject(this);
  81 #if TARGET_CARBON
  82         SetWindowModality( (WindowRef) MacGetWindowRef() , kWindowModalityAppModal , NULL ) ;
  83 #endif
  84     }
  85     else
  86     {
  87         m_windowStyle &= ~wxDIALOG_MODAL;
  88
  89         wxModelessWindows.Append(this);
  90     }
  91 }
  92
  93 wxDialog::~wxDialog()
  94 {
  95     m_isBeingDeleted = TRUE ;
  96     Show(FALSE);
  97 }
  98
  99 // By default, pressing escape cancels the dialog , on mac command-stop does the same thing
 100 void wxDialog::OnCharHook(wxKeyEvent& event)
 101 {
 102     if (( event.m_keyCode == WXK_ESCAPE ||
 103         ( event.m_keyCode == '.' && event.MetaDown() ) )
 104         && FindWindow(wxID_CANCEL) )
 105     {
 106         // Behaviour changed in 2.0: we'll send a Cancel message
 107         // to the dialog instead of Close.
 108         wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 109         cancelEvent.SetEventObject( this );
 110         GetEventHandler()->ProcessEvent(cancelEvent);
 111
 112         return;
 113     }
 114     // We didn't process this event.
 115     event.Skip();
 116 }
 117
 118 bool wxDialog::IsModal() const
 119 {
 120     return (GetWindowStyleFlag() & wxDIALOG_MODAL) != 0;
 121 }
 122
 123
 124 bool wxDialog::IsModalShowing() const
 125 {
 126     return wxModalDialogs.Find((wxDialog *)this) != NULL; // const_cast
 127 }
 128
 129 bool wxDialog::Show(bool show)
 130 {
 131     if ( !wxDialogBase::Show(show) )
 132     {
 133         // nothing to do
 134         return FALSE;
 135     }
 136
 137     if ( show )
 138     {
 139         // usually will result in TransferDataToWindow() being called
 140         InitDialog();
 141     }
 142
 143     if ( IsModal() )
 144     {
 145         if ( show )
 146         {
 147             DoShowModal();
 148         }
 149         else // end of modal dialog
 150         {
 151             // this will cause IsModalShowing() return FALSE and our local
 152             // message loop will terminate
 153             wxModalDialogs.DeleteObject(this);
 154         }
 155     }
 156
 157     return TRUE;
 158 }
 159
 160 #if !TARGET_CARBON
 161 extern bool s_macIsInModalLoop ;
 162 #endif
 163
 164 void wxDialog::DoShowModal()
 165 {
 166     wxCHECK_RET( !IsModalShowing(), _T("DoShowModal() called twice") );
 167
 168     wxModalDialogs.Append(this);
 169
 170       wxWindow *parent = GetParent();
 171
 172     // remember where the focus was
 173     wxWindow *winFocus = FindFocus();
 174     if ( !winFocus )
 175     {
 176         winFocus = parent;
 177     }
 178     if ( !winFocus )
 179     {
 180         winFocus = wxTheApp->GetTopWindow();
 181     }
 182 #if TARGET_CARBON
 183     BeginAppModalStateForWindow(  (WindowRef) MacGetWindowRef()) ;
 184 #else
 185     // TODO : test whether parent gets disabled
 186     bool formerModal = s_macIsInModalLoop ;
 187     s_macIsInModalLoop = true ;
 188 #endif
 189     while ( IsModalShowing() )
 190     {
 191         wxTheApp->MacDoOneEvent() ;
 192         // calls process idle itself
 193     }
 194
 195 #if TARGET_CARBON
 196     EndAppModalStateForWindow( (WindowRef) MacGetWindowRef() ) ;
 197 #else
 198     // TODO probably reenable the parent window if any
 199     s_macIsInModalLoop = formerModal ;
 200 #endif
 201
 202
 203     // and restore focus
 204     if ( winFocus )
 205     {
 206         winFocus->SetFocus();
 207     }
 208 }
 209
 210
 211 // Replacement for Show(TRUE) for modal dialogs - returns return code
 212 int wxDialog::ShowModal()
 213 {
 214     if ( !IsModal() )
 215     {
 216         SetModal(TRUE);
 217     }
 218
 219     Show(TRUE);
 220     return GetReturnCode();
 221 }
 222
 223 // NB: this function (surprizingly) may be called for both modal and modeless
 224 //     dialogs and should work for both of them
 225 void wxDialog::EndModal(int retCode)
 226 {
 227   SetReturnCode(retCode);
 228   Show(FALSE);
 229 }
 230
 231 // Standard buttons
 232 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 233 {
 234   if ( Validate() && TransferDataFromWindow() )
 235   {
 236       EndModal(wxID_OK);
 237   }
 238 }
 239
 240 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 241 {
 242   if (Validate())
 243     TransferDataFromWindow();
 244   // TODO probably need to disable the Apply button until things change again
 245 }
 246
 247 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 248 {
 249     EndModal(wxID_CANCEL);
 250 }
 251
 252 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 253 {
 254     // We'll send a Cancel message by default,
 255     // which may close the dialog.
 256     // Check for looping if the Cancel event handler calls Close().
 257
 258     // Note that if a cancel button and handler aren't present in the dialog,
 259     // nothing will happen when you close the dialog via the window manager, or
 260     // via Close().
 261     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 262     // created on the stack.
 263     // However, this does mean that calling dialog->Close() won't delete the dialog
 264     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 265     // sure to destroy the dialog.
 266     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 267
 268     static wxList closing;
 269
 270     if ( closing.Member(this) )
 271         return;
 272
 273     closing.Append(this);
 274
 275     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 276     cancelEvent.SetEventObject( this );
 277     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 278
 279     closing.DeleteObject(this);
 280 }
 281
 282 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 283 {
 284   SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 285   Refresh();
 286 }
 287