src/mac/carbon/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.cpp
   3 // Purpose:     wxDialog class
   4 // Author:      AUTHOR
   5 // Modified by:
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   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
  61   SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
  62
  63
  64   if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style, name) )
  65         return FALSE;
  66
  67         MacCreateRealWindow( title , pos , size , MacRemoveBordersFromStyle(style)  , name ) ;
  68
  69         m_macWindowBackgroundTheme = kThemeBrushDialogBackgroundActive ;
  70         SetThemeWindowBackground( (WindowRef) m_macWindow , m_macWindowBackgroundTheme , false ) ;
  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     }
  82     else
  83     {
  84         m_windowStyle &= ~wxDIALOG_MODAL;
  85
  86         wxModelessWindows.Append(this);
  87     }
  88 }
  89
  90 wxDialog::~wxDialog()
  91 {
  92         m_isBeingDeleted = TRUE ;
  93   Show(FALSE);
  94 }
  95
  96 // By default, pressing escape cancels the dialog , on mac command-stop does the same thing
  97 void wxDialog::OnCharHook(wxKeyEvent& event)
  98 {
  99   if (
 100     ( event.m_keyCode == WXK_ESCAPE ||
 101       ( event.m_keyCode == '.' && event.MetaDown() ) )
 102      && FindWindow(wxID_CANCEL) )
 103   {
 104                 // Behaviour changed in 2.0: we'll send a Cancel message
 105                 // to the dialog instead of Close.
 106                 wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 107                 cancelEvent.SetEventObject( this );
 108                 GetEventHandler()->ProcessEvent(cancelEvent);
 109
 110                 return;
 111   }
 112   // We didn't process this event.
 113   event.Skip();
 114 }
 115
 116 bool wxDialog::IsModal() const
 117 {
 118     return (GetWindowStyleFlag() & wxDIALOG_MODAL) != 0;
 119 }
 120
 121
 122 bool wxDialog::IsModalShowing() const
 123 {
 124     return wxModalDialogs.Find((wxDialog *)this) != NULL; // const_cast
 125 }
 126
 127 extern bool s_macIsInModalLoop ;
 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 void wxDialog::DoShowModal()
 161 {
 162     wxCHECK_RET( !IsModalShowing(), _T("DoShowModal() called twice") );
 163
 164     wxModalDialogs.Append(this);
 165
 166         wxWindow *parent = GetParent();
 167
 168     // remember where the focus was
 169     wxWindow *winFocus = FindFocus();
 170     if ( !winFocus )
 171     {
 172         winFocus = parent;
 173     }
 174     if ( !winFocus )
 175     {
 176         winFocus = wxTheApp->GetTopWindow();
 177     }
 178         // TODO : test whether parent gets disabled
 179
 180         bool formerModal = s_macIsInModalLoop ;
 181         s_macIsInModalLoop = true ;
 182
 183         while ( IsModalShowing() )
 184         {
 185                 while ( !wxTheApp->Pending() && wxTheApp->ProcessIdle() )
 186                 {
 187                 }
 188                 wxTheApp->MacDoOneEvent() ;
 189         }
 190
 191         s_macIsInModalLoop = formerModal ;
 192
 193     // TODO probably reenable the parent window if any
 194
 195     // and restore focus
 196     if ( winFocus )
 197     {
 198         winFocus->SetFocus();
 199     }
 200 }
 201
 202
 203 // Replacement for Show(TRUE) for modal dialogs - returns return code
 204 int wxDialog::ShowModal()
 205 {
 206   m_windowStyle |= wxDIALOG_MODAL;
 207   Show(TRUE);
 208   return GetReturnCode();
 209 }
 210
 211 // NB: this function (surprizingly) may be called for both modal and modeless
 212 //     dialogs and should work for both of them
 213 void wxDialog::EndModal(int retCode)
 214 {
 215   SetReturnCode(retCode);
 216   Show(FALSE);
 217 }
 218
 219 // Standard buttons
 220 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 221 {
 222   if ( Validate() && TransferDataFromWindow() )
 223   {
 224       EndModal(wxID_OK);
 225   }
 226 }
 227
 228 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 229 {
 230   if (Validate())
 231     TransferDataFromWindow();
 232   // TODO probably need to disable the Apply button until things change again
 233 }
 234
 235 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 236 {
 237     EndModal(wxID_CANCEL);
 238 }
 239
 240 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 241 {
 242     // We'll send a Cancel message by default,
 243     // which may close the dialog.
 244     // Check for looping if the Cancel event handler calls Close().
 245
 246     // Note that if a cancel button and handler aren't present in the dialog,
 247     // nothing will happen when you close the dialog via the window manager, or
 248     // via Close().
 249     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 250     // created on the stack.
 251     // However, this does mean that calling dialog->Close() won't delete the dialog
 252     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 253     // sure to destroy the dialog.
 254     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 255
 256     static wxList closing;
 257
 258     if ( closing.Member(this) )
 259         return;
 260
 261     closing.Append(this);
 262
 263     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 264     cancelEvent.SetEventObject( this );
 265     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 266
 267     closing.DeleteObject(this);
 268 }
 269
 270 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 271 {
 272   SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 273   Refresh();
 274 }
 275