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