src/osx/cocoa/msgdlg.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/cocoa/msgdlg.mm
   3 // Purpose:     wxMessageDialog
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id: msgdlg.cpp 54129 2008-06-11 19:30:52Z SC $
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/msgdlg.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/intl.h"
  18     #include "wx/app.h"
  19 #endif
  20
  21 #include "wx/thread.h"
  22 #include "wx/osx/private.h"
  23
  24
  25 IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  26
  27
  28 wxMessageDialog::wxMessageDialog(wxWindow *parent,
  29                                  const wxString& message,
  30                                  const wxString& caption,
  31                                  long style,
  32                                  const wxPoint& WXUNUSED(pos))
  33                : wxMessageDialogWithCustomLabels(parent, message, caption, style)
  34 {
  35 }
  36
  37 int wxMessageDialog::ShowModal()
  38 {
  39     int resultbutton = wxID_CANCEL;
  40
  41     const long style = GetMessageDialogStyle();
  42
  43     wxASSERT_MSG( (style & 0x3F) != wxYES, wxT("this style is not supported on Mac") );
  44
  45     NSAlertStyle alertType = NSWarningAlertStyle;
  46     if (style & wxICON_EXCLAMATION)
  47         alertType = NSCriticalAlertStyle;
  48     else if (style & wxICON_HAND)
  49         alertType = NSWarningAlertStyle;
  50     else if (style & wxICON_INFORMATION)
  51         alertType = NSInformationalAlertStyle;
  52     else if (style & wxICON_QUESTION)
  53         alertType = NSInformationalAlertStyle;
  54
  55
  56     // work out what to display
  57     // if the extended text is empty then we use the caption as the title
  58     // and the message as the text (for backwards compatibility)
  59     // but if the extended message is not empty then we use the message as the title
  60     // and the extended message as the text because that makes more sense
  61
  62     wxString msgtitle,msgtext;
  63     if(m_extendedMessage.IsEmpty())
  64     {
  65         msgtitle = m_caption;
  66         msgtext  = m_message;
  67     }
  68     else
  69     {
  70         msgtitle = m_message;
  71         msgtext  = m_extendedMessage;
  72     }
  73
  74
  75     if ( !wxIsMainThread() )
  76     {
  77         CFStringRef defaultButtonTitle = NULL;
  78         CFStringRef alternateButtonTitle = NULL;
  79         CFStringRef otherButtonTitle = NULL;
  80
  81         wxCFStringRef cfTitle( msgtitle, GetFont().GetEncoding() );
  82         wxCFStringRef cfText( msgtext, GetFont().GetEncoding() );
  83
  84         wxCFStringRef cfNoString( GetNoLabel(), GetFont().GetEncoding() );
  85         wxCFStringRef cfYesString( GetYesLabel(), GetFont().GetEncoding() );
  86         wxCFStringRef cfOKString( GetOKLabel(), GetFont().GetEncoding()) ;
  87         wxCFStringRef cfCancelString( GetCancelLabel(), GetFont().GetEncoding() );
  88
  89         int m_buttonId[4] = { 0, 0, 0, wxID_CANCEL /* time-out */ };
  90
  91         if (style & wxYES_NO)
  92         {
  93             if ( style & wxNO_DEFAULT )
  94             {
  95                 defaultButtonTitle = cfNoString;
  96                 alternateButtonTitle = cfYesString;
  97                 m_buttonId[0] = wxID_NO;
  98                 m_buttonId[1] = wxID_YES;
  99             }
 100             else
 101             {
 102                 defaultButtonTitle = cfYesString;
 103                 alternateButtonTitle = cfNoString;
 104                 m_buttonId[0] = wxID_YES;
 105                 m_buttonId[1] = wxID_NO;
 106             }
 107             if (style & wxCANCEL)
 108             {
 109                 otherButtonTitle = cfCancelString;
 110                 m_buttonId[2] = wxID_CANCEL;
 111             }
 112         }
 113         else
 114         {
 115             // the MSW implementation even shows an OK button if it is not specified, we'll do the same
 116             m_buttonId[0] = wxID_OK;
 117             // using null as default title does not work on earlier systems
 118             defaultButtonTitle = cfOKString;
 119             if (style & wxCANCEL)
 120             {
 121                 alternateButtonTitle = cfCancelString;
 122                 m_buttonId[1] = wxID_CANCEL;
 123             }
 124         }
 125
 126         CFOptionFlags exitButton;
 127         OSStatus err = CFUserNotificationDisplayAlert(
 128             0, alertType, NULL, NULL, NULL, cfTitle, cfText,
 129             defaultButtonTitle, alternateButtonTitle, otherButtonTitle, &exitButton );
 130         if (err == noErr)
 131             resultbutton = m_buttonId[exitButton];
 132     }
 133     else
 134     {
 135         NSAlert* alert = (NSAlert*)ConstructNSAlert();
 136
 137         int button = -1;
 138         button = [alert runModal];
 139         [alert release];
 140         ModalFinishedCallback(alert, button);
 141     }
 142
 143     return GetReturnCode();
 144 }
 145
 146 void wxMessageDialog::ShowWindowModal()
 147 {
 148     NSAlert* alert = (NSAlert*)ConstructNSAlert();
 149
 150     wxNonOwnedWindow* parentWindow = NULL;
 151
 152     m_modality = wxDIALOG_MODALITY_WINDOW_MODAL;
 153
 154     if (GetParent())
 155         parentWindow = dynamic_cast<wxNonOwnedWindow*>(wxGetTopLevelParent(GetParent()));
 156
 157     wxASSERT_MSG(parentWindow, "Window modal display requires parent.");
 158
 159     if (parentWindow)
 160     {
 161         NSWindow* nativeParent = parentWindow->GetWXWindow();
 162         ModalDialogDelegate* sheetDelegate = [[ModalDialogDelegate alloc] init];
 163         [sheetDelegate setImplementation: this];
 164         [alert beginSheetModalForWindow: nativeParent modalDelegate: sheetDelegate
 165             didEndSelector: @selector(sheetDidEnd:returnCode:contextInfo:)
 166             contextInfo: nil];
 167     }
 168 }
 169
 170 void wxMessageDialog::ModalFinishedCallback(void* panel, int resultCode)
 171 {
 172     int resultbutton = wxID_CANCEL;
 173     if ( resultCode < NSAlertFirstButtonReturn )
 174         resultbutton = wxID_CANCEL;
 175     else
 176     {
 177         if ( resultCode - NSAlertFirstButtonReturn < m_buttonCount )
 178             resultbutton = m_buttonId[ resultCode - NSAlertFirstButtonReturn ];
 179         else
 180             resultbutton = wxID_CANCEL;
 181     }
 182     SetReturnCode(resultbutton);
 183
 184     if (GetModality() == wxDIALOG_MODALITY_WINDOW_MODAL)
 185         SendWindowModalDialogEvent ( wxEVT_WINDOW_MODAL_DIALOG_CLOSED  );
 186 }
 187
 188 void* wxMessageDialog::ConstructNSAlert()
 189 {
 190     const long style = GetMessageDialogStyle();
 191
 192     wxASSERT_MSG( (style & 0x3F) != wxYES, wxT("this style is not supported on Mac") );
 193
 194     // work out what to display
 195     // if the extended text is empty then we use the caption as the title
 196     // and the message as the text (for backwards compatibility)
 197     // but if the extended message is not empty then we use the message as the title
 198     // and the extended message as the text because that makes more sense
 199
 200     wxString msgtitle,msgtext;
 201     if(m_extendedMessage.IsEmpty())
 202     {
 203         msgtitle = m_caption;
 204         msgtext  = m_message;
 205     }
 206     else
 207     {
 208         msgtitle = m_message;
 209         msgtext  = m_extendedMessage;
 210     }
 211
 212     NSAlert* alert = [[NSAlert alloc] init];
 213
 214     wxCFStringRef cfNoString( GetNoLabel(), GetFont().GetEncoding() );
 215     wxCFStringRef cfYesString( GetYesLabel(), GetFont().GetEncoding() );
 216     wxCFStringRef cfOKString( GetOKLabel(), GetFont().GetEncoding() );
 217     wxCFStringRef cfCancelString( GetCancelLabel(), GetFont().GetEncoding() );
 218
 219     wxCFStringRef cfTitle( msgtitle, GetFont().GetEncoding() );
 220     wxCFStringRef cfText( msgtext, GetFont().GetEncoding() );
 221
 222     [alert setMessageText:cfTitle.AsNSString()];
 223     [alert setInformativeText:cfText.AsNSString()];
 224
 225     m_buttonCount = 0;
 226
 227     if (style & wxYES_NO)
 228     {
 229         if ( style & wxNO_DEFAULT )
 230         {
 231             [alert addButtonWithTitle:cfNoString.AsNSString()];
 232             m_buttonId[ m_buttonCount++ ] = wxID_NO;
 233             [alert addButtonWithTitle:cfYesString.AsNSString()];
 234             m_buttonId[ m_buttonCount++ ] = wxID_YES;
 235         }
 236         else
 237         {
 238             [alert addButtonWithTitle:cfYesString.AsNSString()];
 239             m_buttonId[ m_buttonCount++ ] = wxID_YES;
 240             [alert addButtonWithTitle:cfNoString.AsNSString()];
 241             m_buttonId[ m_buttonCount++ ] = wxID_NO;
 242         }
 243
 244         if (style & wxCANCEL)
 245         {
 246             [alert addButtonWithTitle:cfCancelString.AsNSString()];
 247             m_buttonId[ m_buttonCount++ ] = wxID_CANCEL;
 248         }
 249     }
 250     // the MSW implementation even shows an OK button if it is not specified, we'll do the same
 251     else
 252     {
 253         [alert addButtonWithTitle:cfOKString.AsNSString()];
 254         m_buttonId[ m_buttonCount++ ] = wxID_OK;
 255         if (style & wxCANCEL)
 256         {
 257             [alert addButtonWithTitle:cfCancelString.AsNSString()];
 258             m_buttonId[ m_buttonCount++ ] = wxID_CANCEL;
 259         }
 260     }
 261     return alert;
 262 }