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:      $Id$
   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/control.h"
  22 #include "wx/thread.h"
  23 #include "wx/osx/private.h"
  24
  25
  26 IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  27
  28
  29 namespace
  30 {
  31     NSAlertStyle GetAlertStyleFromWXStyle( long style )
  32     {
  33         NSAlertStyle alertType = NSWarningAlertStyle;
  34         if (style & wxICON_EXCLAMATION)
  35             alertType = NSCriticalAlertStyle;
  36         else if (style & wxICON_HAND)
  37             alertType = NSWarningAlertStyle;
  38         else if (style & wxICON_INFORMATION)
  39             alertType = NSInformationalAlertStyle;
  40         else if (style & wxICON_QUESTION)
  41             alertType = NSInformationalAlertStyle;
  42         return alertType;
  43     }
  44 }
  45
  46 wxMessageDialog::wxMessageDialog(wxWindow *parent,
  47                                  const wxString& message,
  48                                  const wxString& caption,
  49                                  long style,
  50                                  const wxPoint& WXUNUSED(pos))
  51                : wxMessageDialogBase(parent, message, caption, style)
  52 {
  53     m_sheetDelegate = [[ModalDialogDelegate alloc] init];
  54     [(ModalDialogDelegate*)m_sheetDelegate setImplementation: this];
  55 }
  56
  57 wxMessageDialog::~wxMessageDialog()
  58 {
  59     [m_sheetDelegate release];
  60 }
  61
  62 int wxMessageDialog::ShowModal()
  63 {
  64     int resultbutton = wxID_CANCEL;
  65
  66     const long style = GetMessageDialogStyle();
  67
  68     wxASSERT_MSG( (style & 0x3F) != wxYES, wxT("this style is not supported on Mac") );
  69
  70     // work out what to display
  71     // if the extended text is empty then we use the caption as the title
  72     // and the message as the text (for backwards compatibility)
  73     // but if the extended message is not empty then we use the message as the title
  74     // and the extended message as the text because that makes more sense
  75
  76     wxString msgtitle,msgtext;
  77     if(m_extendedMessage.IsEmpty())
  78     {
  79         msgtitle = m_caption;
  80         msgtext  = m_message;
  81     }
  82     else
  83     {
  84         msgtitle = m_message;
  85         msgtext  = m_extendedMessage;
  86     }
  87
  88
  89     if ( !wxIsMainThread() )
  90     {
  91         CFStringRef defaultButtonTitle = NULL;
  92         CFStringRef alternateButtonTitle = NULL;
  93         CFStringRef otherButtonTitle = NULL;
  94
  95         wxCFStringRef cfTitle( msgtitle, GetFont().GetEncoding() );
  96         wxCFStringRef cfText( msgtext, GetFont().GetEncoding() );
  97
  98         wxCFStringRef cfNoString( wxControl::GetLabelText(GetNoLabel()), GetFont().GetEncoding() );
  99         wxCFStringRef cfYesString( wxControl::GetLabelText(GetYesLabel()), GetFont().GetEncoding() );
 100         wxCFStringRef cfOKString( wxControl::GetLabelText(GetOKLabel()), GetFont().GetEncoding()) ;
 101         wxCFStringRef cfCancelString( wxControl::GetLabelText(GetCancelLabel()), GetFont().GetEncoding() );
 102
 103         NSAlertStyle alertType = GetAlertStyleFromWXStyle(style);
 104
 105         int m_buttonId[4] = { 0, 0, 0, wxID_CANCEL /* time-out */ };
 106
 107         if (style & wxYES_NO)
 108         {
 109             if ( style & wxNO_DEFAULT )
 110             {
 111                 defaultButtonTitle = cfNoString;
 112                 alternateButtonTitle = cfYesString;
 113                 m_buttonId[0] = wxID_NO;
 114                 m_buttonId[1] = wxID_YES;
 115             }
 116             else
 117             {
 118                 defaultButtonTitle = cfYesString;
 119                 alternateButtonTitle = cfNoString;
 120                 m_buttonId[0] = wxID_YES;
 121                 m_buttonId[1] = wxID_NO;
 122             }
 123             if (style & wxCANCEL)
 124             {
 125                 otherButtonTitle = cfCancelString;
 126                 m_buttonId[2] = wxID_CANCEL;
 127             }
 128         }
 129         else
 130         {
 131             // the MSW implementation even shows an OK button if it is not specified, we'll do the same
 132             m_buttonId[0] = wxID_OK;
 133             // using null as default title does not work on earlier systems
 134             defaultButtonTitle = cfOKString;
 135             if (style & wxCANCEL)
 136             {
 137                 alternateButtonTitle = cfCancelString;
 138                 m_buttonId[1] = wxID_CANCEL;
 139             }
 140         }
 141
 142         wxASSERT_MSG( !(style & wxHELP), "wxHELP not supported in non-GUI thread" );
 143
 144         CFOptionFlags exitButton;
 145         OSStatus err = CFUserNotificationDisplayAlert(
 146             0, alertType, NULL, NULL, NULL, cfTitle, cfText,
 147             defaultButtonTitle, alternateButtonTitle, otherButtonTitle, &exitButton );
 148         if (err == noErr)
 149             resultbutton = m_buttonId[exitButton];
 150     }
 151     else
 152     {
 153         NSAlert* alert = (NSAlert*)ConstructNSAlert();
 154
 155         int button = -1;
 156         button = [alert runModal];
 157         [alert release];
 158         ModalFinishedCallback(alert, button);
 159     }
 160
 161     return GetReturnCode();
 162 }
 163
 164 void wxMessageDialog::ShowWindowModal()
 165 {
 166     NSAlert* alert = (NSAlert*)ConstructNSAlert();
 167
 168     wxNonOwnedWindow* parentWindow = NULL;
 169
 170     m_modality = wxDIALOG_MODALITY_WINDOW_MODAL;
 171
 172     if (GetParent())
 173         parentWindow = dynamic_cast<wxNonOwnedWindow*>(wxGetTopLevelParent(GetParent()));
 174
 175     wxASSERT_MSG(parentWindow, "Window modal display requires parent.");
 176
 177     if (parentWindow)
 178     {
 179         NSWindow* nativeParent = parentWindow->GetWXWindow();
 180         [alert beginSheetModalForWindow: nativeParent modalDelegate: m_sheetDelegate
 181             didEndSelector: @selector(sheetDidEnd:returnCode:contextInfo:)
 182             contextInfo: nil];
 183     }
 184 }
 185
 186 void wxMessageDialog::ModalFinishedCallback(void* WXUNUSED(panel), int resultCode)
 187 {
 188     int resultbutton = wxID_CANCEL;
 189     if ( resultCode < NSAlertFirstButtonReturn )
 190         resultbutton = wxID_CANCEL;
 191     else
 192     {
 193         if ( resultCode - NSAlertFirstButtonReturn < m_buttonCount )
 194             resultbutton = m_buttonId[ resultCode - NSAlertFirstButtonReturn ];
 195         else
 196             resultbutton = wxID_CANCEL;
 197     }
 198     SetReturnCode(resultbutton);
 199
 200     if (GetModality() == wxDIALOG_MODALITY_WINDOW_MODAL)
 201         SendWindowModalDialogEvent ( wxEVT_WINDOW_MODAL_DIALOG_CLOSED  );
 202 }
 203
 204 void* wxMessageDialog::ConstructNSAlert()
 205 {
 206     const long style = GetMessageDialogStyle();
 207
 208     wxASSERT_MSG( (style & 0x3F) != wxYES, wxT("this style is not supported on Mac") );
 209
 210     // work out what to display
 211     // if the extended text is empty then we use the caption as the title
 212     // and the message as the text (for backwards compatibility)
 213     // but if the extended message is not empty then we use the message as the title
 214     // and the extended message as the text because that makes more sense
 215
 216     wxString msgtitle,msgtext;
 217     if(m_extendedMessage.IsEmpty())
 218     {
 219         msgtitle = m_caption;
 220         msgtext  = m_message;
 221     }
 222     else
 223     {
 224         msgtitle = m_message;
 225         msgtext  = m_extendedMessage;
 226     }
 227
 228     NSAlert* alert = [[NSAlert alloc] init];
 229     NSAlertStyle alertType = GetAlertStyleFromWXStyle(style);
 230
 231     wxCFStringRef cfNoString( wxControl::GetLabelText(GetNoLabel()), GetFont().GetEncoding() );
 232     wxCFStringRef cfYesString( wxControl::GetLabelText(GetYesLabel()), GetFont().GetEncoding() );
 233     wxCFStringRef cfOKString( wxControl::GetLabelText(GetOKLabel()), GetFont().GetEncoding() );
 234     wxCFStringRef cfCancelString( wxControl::GetLabelText(GetCancelLabel()), GetFont().GetEncoding() );
 235
 236     wxCFStringRef cfTitle( msgtitle, GetFont().GetEncoding() );
 237     wxCFStringRef cfText( msgtext, GetFont().GetEncoding() );
 238
 239     [alert setMessageText:cfTitle.AsNSString()];
 240     [alert setInformativeText:cfText.AsNSString()];
 241     [alert setAlertStyle:alertType];
 242
 243     m_buttonCount = 0;
 244
 245     if (style & wxYES_NO)
 246     {
 247         if ( style & wxNO_DEFAULT )
 248         {
 249             [alert addButtonWithTitle:cfNoString.AsNSString()];
 250             m_buttonId[ m_buttonCount++ ] = wxID_NO;
 251             [alert addButtonWithTitle:cfYesString.AsNSString()];
 252             m_buttonId[ m_buttonCount++ ] = wxID_YES;
 253         }
 254         else
 255         {
 256             [alert addButtonWithTitle:cfYesString.AsNSString()];
 257             m_buttonId[ m_buttonCount++ ] = wxID_YES;
 258             [alert addButtonWithTitle:cfNoString.AsNSString()];
 259             m_buttonId[ m_buttonCount++ ] = wxID_NO;
 260         }
 261
 262         if (style & wxCANCEL)
 263         {
 264             [alert addButtonWithTitle:cfCancelString.AsNSString()];
 265             m_buttonId[ m_buttonCount++ ] = wxID_CANCEL;
 266         }
 267     }
 268     // the MSW implementation even shows an OK button if it is not specified, we'll do the same
 269     else
 270     {
 271         if ( style & wxCANCEL_DEFAULT )
 272         {
 273             [alert addButtonWithTitle:cfCancelString.AsNSString()];
 274             m_buttonId[ m_buttonCount++ ] = wxID_CANCEL;
 275
 276             [alert addButtonWithTitle:cfOKString.AsNSString()];
 277             m_buttonId[ m_buttonCount++ ] = wxID_OK;
 278         }
 279         else
 280         {
 281             [alert addButtonWithTitle:cfOKString.AsNSString()];
 282             m_buttonId[ m_buttonCount++ ] = wxID_OK;
 283             if (style & wxCANCEL)
 284             {
 285                 [alert addButtonWithTitle:cfCancelString.AsNSString()];
 286                 m_buttonId[ m_buttonCount++ ] = wxID_CANCEL;
 287             }
 288         }
 289
 290     }
 291
 292     if ( style & wxHELP )
 293     {
 294         wxCFStringRef cfHelpString( GetHelpLabel(), GetFont().GetEncoding() );
 295         [alert addButtonWithTitle:cfHelpString.AsNSString()];
 296         m_buttonId[ m_buttonCount++ ] = wxID_HELP;
 297     }
 298
 299     wxASSERT_MSG( m_buttonCount <= WXSIZEOF(m_buttonId), "Too many buttons" );
 300
 301     return alert;
 302 }