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