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