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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "dialog.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/dialog.h"
  19 #include "wx/utils.h"
  20 #include "wx/frame.h"
  21 #include "wx/app.h"
  22 #include "wx/settings.h"
  23
  24 #include "wx/mac/uma.h"
  25
  26 // Lists to keep track of windows, so we can disable/enable them
  27 // for modal dialogs
  28 wxList wxModalDialogs;
  29 //wxList wxModelessWindows;  // Frames and modeless dialogs
  30 extern wxList wxPendingDelete;
  31
  32 #if !USE_SHARED_LIBRARY
  33 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
  34
  35 BEGIN_EVENT_TABLE(wxDialog, wxDialogBase)
  36   EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  37   EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  38   EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  39
  40   EVT_CHAR_HOOK(wxDialog::OnCharHook)
  41
  42   EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
  43
  44   EVT_CLOSE(wxDialog::OnCloseWindow)
  45 END_EVENT_TABLE()
  46
  47 #endif
  48
  49 void wxDialog::Init()
  50 {
  51     m_isModalStyle = false;
  52 }
  53
  54 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
  55            const wxString& title,
  56            const wxPoint& pos,
  57            const wxSize& size,
  58            long style,
  59            const wxString& name)
  60 {
  61     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  62
  63     // All dialogs should really have this style
  64     style |= wxTAB_TRAVERSAL;
  65
  66     if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style & ~(wxYES|wxOK|wxNO|wxCANCEL) , name) )
  67         return FALSE;
  68
  69     return TRUE;
  70 }
  71
  72 void wxDialog::SetModal(bool flag)
  73 {
  74     if ( flag )
  75     {
  76         m_isModalStyle = true;
  77
  78         wxModelessWindows.DeleteObject(this);
  79 #if TARGET_CARBON
  80         SetWindowModality( (WindowRef) MacGetWindowRef() , kWindowModalityAppModal , NULL ) ;
  81 #endif
  82     }
  83     else
  84     {
  85         m_isModalStyle = false;
  86
  87         wxModelessWindows.Append(this);
  88     }
  89 }
  90
  91 wxDialog::~wxDialog()
  92 {
  93     m_isBeingDeleted = TRUE;
  94     Show(FALSE);
  95 }
  96
  97 // By default, pressing escape cancels the dialog , on mac command-stop does the same thing
  98 void wxDialog::OnCharHook(wxKeyEvent& event)
  99 {
 100     if (( 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 m_isModalStyle;
 119 }
 120
 121
 122 bool wxDialog::IsModalShowing() const
 123 {
 124     return wxModalDialogs.Find((wxDialog *)this) != NULL; // const_cast
 125 }
 126
 127 bool wxDialog::Show(bool show)
 128 {
 129     if ( !wxDialogBase::Show(show) )
 130     {
 131         // nothing to do
 132         return FALSE;
 133     }
 134
 135     if ( show )
 136     {
 137         // usually will result in TransferDataToWindow() being called
 138         InitDialog();
 139     }
 140
 141     if ( IsModal() )
 142     {
 143         if ( show )
 144         {
 145             DoShowModal();
 146         }
 147         else // end of modal dialog
 148         {
 149             // this will cause IsModalShowing() return FALSE and our local
 150             // message loop will terminate
 151             wxModalDialogs.DeleteObject(this);
 152         }
 153     }
 154
 155     return TRUE;
 156 }
 157
 158 #if !TARGET_CARBON
 159 extern bool s_macIsInModalLoop ;
 160 #endif
 161
 162 void wxDialog::DoShowModal()
 163 {
 164     wxCHECK_RET( !IsModalShowing(), _T("DoShowModal() called twice") );
 165
 166     wxModalDialogs.Append(this);
 167
 168     SetFocus() ;
 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