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 void wxDialog::Init()
  48 {
  49     m_isModalStyle = false;
  50 }
  51
  52 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
  53            const wxString& title,
  54            const wxPoint& pos,
  55            const wxSize& size,
  56            long style,
  57            const wxString& name)
  58 {
  59     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  60
  61     // All dialogs should really have this style
  62     style |= wxTAB_TRAVERSAL;
  63
  64     if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style & ~(wxYES|wxOK|wxNO|wxCANCEL) , name) )
  65         return FALSE;
  66
  67     return TRUE;
  68 }
  69
  70 void wxDialog::SetModal(bool flag)
  71 {
  72     if ( flag )
  73     {
  74         m_isModalStyle = true;
  75
  76         wxModelessWindows.DeleteObject(this);
  77 #if TARGET_CARBON
  78         SetWindowModality( (WindowRef) MacGetWindowRef() , kWindowModalityAppModal , NULL ) ;
  79 #endif
  80     }
  81     else
  82     {
  83         m_isModalStyle = false;
  84
  85         wxModelessWindows.Append(this);
  86     }
  87 }
  88
  89 wxDialog::~wxDialog()
  90 {
  91     m_isBeingDeleted = TRUE;
  92     Show(FALSE);
  93 }
  94
  95 // By default, pressing escape cancels the dialog , on mac command-stop does the same thing
  96 void wxDialog::OnCharHook(wxKeyEvent& event)
  97 {
  98     if (( event.m_keyCode == WXK_ESCAPE ||
  99         ( event.m_keyCode == '.' && event.MetaDown() ) )
 100         && FindWindow(wxID_CANCEL) )
 101     {
 102         // Behaviour changed in 2.0: we'll send a Cancel message
 103         // to the dialog instead of Close.
 104         wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 105         cancelEvent.SetEventObject( this );
 106         GetEventHandler()->ProcessEvent(cancelEvent);
 107
 108         return;
 109     }
 110     // We didn't process this event.
 111     event.Skip();
 112 }
 113
 114 bool wxDialog::IsModal() const
 115 {
 116     return m_isModalStyle;
 117 }
 118
 119
 120 bool wxDialog::IsModalShowing() const
 121 {
 122     return wxModalDialogs.Find((wxDialog *)this) != NULL; // const_cast
 123 }
 124
 125 bool wxDialog::Show(bool show)
 126 {
 127     if ( !wxDialogBase::Show(show) )
 128     {
 129         // nothing to do
 130         return FALSE;
 131     }
 132
 133     if ( show )
 134     {
 135         // usually will result in TransferDataToWindow() being called
 136         InitDialog();
 137     }
 138
 139     if ( IsModal() )
 140     {
 141         if ( show )
 142         {
 143             DoShowModal();
 144         }
 145         else // end of modal dialog
 146         {
 147             // this will cause IsModalShowing() return FALSE and our local
 148             // message loop will terminate
 149             wxModalDialogs.DeleteObject(this);
 150         }
 151     }
 152
 153     return TRUE;
 154 }
 155
 156 #if !TARGET_CARBON
 157 extern bool s_macIsInModalLoop ;
 158 #endif
 159
 160 void wxDialog::DoShowModal()
 161 {
 162     wxCHECK_RET( !IsModalShowing(), _T("DoShowModal() called twice") );
 163
 164     wxModalDialogs.Append(this);
 165
 166     SetFocus() ;
 167
 168 #if TARGET_CARBON
 169     BeginAppModalStateForWindow(  (WindowRef) MacGetWindowRef()) ;
 170 #else
 171     // TODO : test whether parent gets disabled
 172     bool formerModal = s_macIsInModalLoop ;
 173     s_macIsInModalLoop = true ;
 174 #endif
 175     while ( IsModalShowing() )
 176     {
 177         wxTheApp->MacDoOneEvent() ;
 178         // calls process idle itself
 179     }
 180
 181 #if TARGET_CARBON
 182     EndAppModalStateForWindow( (WindowRef) MacGetWindowRef() ) ;
 183 #else
 184     // TODO probably reenable the parent window if any
 185     s_macIsInModalLoop = formerModal ;
 186 #endif
 187 }
 188
 189
 190 // Replacement for Show(TRUE) for modal dialogs - returns return code
 191 int wxDialog::ShowModal()
 192 {
 193     if ( !IsModal() )
 194     {
 195         SetModal(TRUE);
 196     }
 197
 198     Show(TRUE);
 199     return GetReturnCode();
 200 }
 201
 202 // NB: this function (surprizingly) may be called for both modal and modeless
 203 //     dialogs and should work for both of them
 204 void wxDialog::EndModal(int retCode)
 205 {
 206   SetReturnCode(retCode);
 207   Show(FALSE);
 208 }
 209
 210 // Standard buttons
 211 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 212 {
 213   if ( Validate() && TransferDataFromWindow() )
 214   {
 215       EndModal(wxID_OK);
 216   }
 217 }
 218
 219 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 220 {
 221   if (Validate())
 222     TransferDataFromWindow();
 223   // TODO probably need to disable the Apply button until things change again
 224 }
 225
 226 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 227 {
 228     EndModal(wxID_CANCEL);
 229 }
 230
 231 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 232 {
 233     // We'll send a Cancel message by default,
 234     // which may close the dialog.
 235     // Check for looping if the Cancel event handler calls Close().
 236
 237     // Note that if a cancel button and handler aren't present in the dialog,
 238     // nothing will happen when you close the dialog via the window manager, or
 239     // via Close().
 240     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 241     // created on the stack.
 242     // However, this does mean that calling dialog->Close() won't delete the dialog
 243     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 244     // sure to destroy the dialog.
 245     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 246
 247     static wxList closing;
 248
 249     if ( closing.Member(this) )
 250         return;
 251
 252     closing.Append(this);
 253
 254     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 255     cancelEvent.SetEventObject( this );
 256     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 257
 258     closing.DeleteObject(this);
 259 }
 260
 261 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 262 {
 263   SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 264   Refresh();
 265 }
 266