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) & ~(wxYES|wxOK|wxNO|wxCANCEL) , 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 #if TARGET_CARBON
 171     BeginAppModalStateForWindow(  (WindowRef) MacGetWindowRef()) ;
 172 #else
 173     // TODO : test whether parent gets disabled
 174     bool formerModal = s_macIsInModalLoop ;
 175     s_macIsInModalLoop = true ;
 176 #endif
 177     while ( IsModalShowing() )
 178     {
 179         wxTheApp->MacDoOneEvent() ;
 180         // calls process idle itself
 181     }
 182
 183 #if TARGET_CARBON
 184     EndAppModalStateForWindow( (WindowRef) MacGetWindowRef() ) ;
 185 #else
 186     // TODO probably reenable the parent window if any
 187     s_macIsInModalLoop = formerModal ;
 188 #endif
 189 }
 190
 191
 192 // Replacement for Show(TRUE) for modal dialogs - returns return code
 193 int wxDialog::ShowModal()
 194 {
 195     if ( !IsModal() )
 196     {
 197         SetModal(TRUE);
 198     }
 199
 200     Show(TRUE);
 201     return GetReturnCode();
 202 }
 203
 204 // NB: this function (surprizingly) may be called for both modal and modeless
 205 //     dialogs and should work for both of them
 206 void wxDialog::EndModal(int retCode)
 207 {
 208   SetReturnCode(retCode);
 209   Show(FALSE);
 210 }
 211
 212 // Standard buttons
 213 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 214 {
 215   if ( Validate() && TransferDataFromWindow() )
 216   {
 217       EndModal(wxID_OK);
 218   }
 219 }
 220
 221 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 222 {
 223   if (Validate())
 224     TransferDataFromWindow();
 225   // TODO probably need to disable the Apply button until things change again
 226 }
 227
 228 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 229 {
 230     EndModal(wxID_CANCEL);
 231 }
 232
 233 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 234 {
 235     // We'll send a Cancel message by default,
 236     // which may close the dialog.
 237     // Check for looping if the Cancel event handler calls Close().
 238
 239     // Note that if a cancel button and handler aren't present in the dialog,
 240     // nothing will happen when you close the dialog via the window manager, or
 241     // via Close().
 242     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 243     // created on the stack.
 244     // However, this does mean that calling dialog->Close() won't delete the dialog
 245     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 246     // sure to destroy the dialog.
 247     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 248
 249     static wxList closing;
 250
 251     if ( closing.Member(this) )
 252         return;
 253
 254     closing.Append(this);
 255
 256     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 257     cancelEvent.SetEventObject( this );
 258     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 259
 260     closing.DeleteObject(this);
 261 }
 262
 263 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 264 {
 265   SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 266   Refresh();
 267 }
 268