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 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
  33
  34 BEGIN_EVENT_TABLE(wxDialog, wxDialogBase)
  35   EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  36   EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  37   EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  38
  39   EVT_CHAR_HOOK(wxDialog::OnCharHook)
  40
  41   EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
  42
  43   EVT_CLOSE(wxDialog::OnCloseWindow)
  44 END_EVENT_TABLE()
  45
  46 void wxDialog::Init()
  47 {
  48     m_isModalStyle = false;
  49 }
  50
  51 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
  52            const wxString& title,
  53            const wxPoint& pos,
  54            const wxSize& size,
  55            long style,
  56            const wxString& name)
  57 {
  58     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  59
  60     // All dialogs should really have this style
  61     style |= wxTAB_TRAVERSAL;
  62
  63     if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style & ~(wxYES|wxOK|wxNO|wxCANCEL) , name) )
  64         return FALSE;
  65
  66     return TRUE;
  67 }
  68
  69 void wxDialog::SetModal(bool flag)
  70 {
  71     if ( flag )
  72     {
  73         m_isModalStyle = true;
  74
  75         wxModelessWindows.DeleteObject(this);
  76 #if TARGET_CARBON
  77         SetWindowModality( (WindowRef) MacGetWindowRef() , kWindowModalityAppModal , NULL ) ;
  78 #endif
  79     }
  80     else
  81     {
  82         m_isModalStyle = false;
  83
  84         wxModelessWindows.Append(this);
  85     }
  86 }
  87
  88 wxDialog::~wxDialog()
  89 {
  90     m_isBeingDeleted = TRUE;
  91     Show(FALSE);
  92 }
  93
  94 // By default, pressing escape cancels the dialog , on mac command-stop does the same thing
  95 void wxDialog::OnCharHook(wxKeyEvent& event)
  96 {
  97     if (( event.m_keyCode == WXK_ESCAPE ||
  98         ( event.m_keyCode == '.' && event.MetaDown() ) )
  99         && FindWindow(wxID_CANCEL) )
 100     {
 101         // Behaviour changed in 2.0: we'll send a Cancel message
 102         // to the dialog instead of Close.
 103         wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 104         cancelEvent.SetEventObject( this );
 105         GetEventHandler()->ProcessEvent(cancelEvent);
 106
 107         return;
 108     }
 109     // We didn't process this event.
 110     event.Skip();
 111 }
 112
 113 bool wxDialog::IsModal() const
 114 {
 115     return wxModalDialogs.Find((wxDialog *)this) != NULL; // const_cast
 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 ( m_isModalStyle )
 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 ( !m_isModalStyle )
 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     SetModal(false);
 209 }
 210
 211 // Standard buttons
 212 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 213 {
 214   if ( Validate() && TransferDataFromWindow() )
 215   {
 216       EndModal(wxID_OK);
 217   }
 218 }
 219
 220 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 221 {
 222   if (Validate())
 223     TransferDataFromWindow();
 224   // TODO probably need to disable the Apply button until things change again
 225 }
 226
 227 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 228 {
 229     EndModal(wxID_CANCEL);
 230 }
 231
 232 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 233 {
 234     // We'll send a Cancel message by default,
 235     // which may close the dialog.
 236     // Check for looping if the Cancel event handler calls Close().
 237
 238     // Note that if a cancel button and handler aren't present in the dialog,
 239     // nothing will happen when you close the dialog via the window manager, or
 240     // via Close().
 241     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 242     // created on the stack.
 243     // However, this does mean that calling dialog->Close() won't delete the dialog
 244     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 245     // sure to destroy the dialog.
 246     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 247
 248     static wxList closing;
 249
 250     if ( closing.Member(this) )
 251         return;
 252
 253     closing.Append(this);
 254
 255     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 256     cancelEvent.SetEventObject( this );
 257     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 258
 259     closing.DeleteObject(this);
 260 }
 261
 262 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 263 {
 264   SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 265   Refresh();
 266 }
 267