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/evtloop.h"
  24 #include "wx/modalhook.h"
  25 #include "wx/osx/private.h"
  26
  27
  28 IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  29
  30
  31 namespace
  32 {
  33     NSAlertStyle GetAlertStyleFromWXStyle( long style )
  34     {
  35         NSAlertStyle alertType = NSWarningAlertStyle;
  36         if (style & wxICON_EXCLAMATION)
  37             alertType = NSCriticalAlertStyle;
  38         else if (style & wxICON_HAND)
  39             alertType = NSWarningAlertStyle;
  40         else if (style & wxICON_INFORMATION)
  41             alertType = NSInformationalAlertStyle;
  42         else if (style & wxICON_QUESTION)
  43             alertType = NSInformationalAlertStyle;
  44         return alertType;
  45     }
  46 }
  47
  48 wxMessageDialog::wxMessageDialog(wxWindow *parent,
  49                                  const wxString& message,
  50                                  const wxString& caption,
  51                                  long style,
  52                                  const wxPoint& WXUNUSED(pos))
  53                : wxMessageDialogBase(parent, message, caption, style)
  54 {
  55     m_sheetDelegate = [[ModalDialogDelegate alloc] init];
  56     [(ModalDialogDelegate*)m_sheetDelegate setImplementation: this];
  57 }
  58
  59 wxMessageDialog::~wxMessageDialog()
  60 {
  61     [m_sheetDelegate release];
  62 }
  63
  64 int wxMessageDialog::ShowModal()
  65 {
  66     WX_HOOK_MODAL_DIALOG();
  67
  68     wxCFEventLoopPauseIdleEvents pause;
  69
  70     int resultbutton = wxID_CANCEL;
  71
  72     const long style = GetMessageDialogStyle();
  73
  74     wxASSERT_MSG( (style & 0x3F) != wxYES, wxT("this style is not supported on Mac") );
  75
  76     // work out what to display
  77     // if the extended text is empty then we use the caption as the title
  78     // and the message as the text (for backwards compatibility)
  79     // but if the extended message is not empty then we use the message as the title
  80     // and the extended message as the text because that makes more sense
  81
  82     wxString msgtitle,msgtext;
  83     if(m_extendedMessage.IsEmpty())
  84     {
  85         msgtitle = m_caption;
  86         msgtext  = m_message;
  87     }
  88     else
  89     {
  90         msgtitle = m_message;
  91         msgtext  = m_extendedMessage;
  92     }
  93
  94
  95     if ( !wxIsMainThread() )
  96     {
  97         CFStringRef defaultButtonTitle = NULL;
  98         CFStringRef alternateButtonTitle = NULL;
  99         CFStringRef otherButtonTitle = NULL;
 100
 101         wxCFStringRef cfTitle( msgtitle, GetFont().GetEncoding() );
 102         wxCFStringRef cfText( msgtext, GetFont().GetEncoding() );
 103
 104         wxCFStringRef cfNoString( wxControl::GetLabelText(GetNoLabel()), GetFont().GetEncoding() );
 105         wxCFStringRef cfYesString( wxControl::GetLabelText(GetYesLabel()), GetFont().GetEncoding() );
 106         wxCFStringRef cfOKString( wxControl::GetLabelText(GetOKLabel()), GetFont().GetEncoding()) ;
 107         wxCFStringRef cfCancelString( wxControl::GetLabelText(GetCancelLabel()), GetFont().GetEncoding() );
 108
 109         NSAlertStyle alertType = GetAlertStyleFromWXStyle(style);
 110
 111         int m_buttonId[4] = { 0, 0, 0, wxID_CANCEL /* time-out */ };
 112
 113         if (style & wxYES_NO)
 114         {
 115             if ( style & wxNO_DEFAULT )
 116             {
 117                 defaultButtonTitle = cfNoString;
 118                 alternateButtonTitle = cfYesString;
 119                 m_buttonId[0] = wxID_NO;
 120                 m_buttonId[1] = wxID_YES;
 121             }
 122             else
 123             {
 124                 defaultButtonTitle = cfYesString;
 125                 alternateButtonTitle = cfNoString;
 126                 m_buttonId[0] = wxID_YES;
 127                 m_buttonId[1] = wxID_NO;
 128             }
 129             if (style & wxCANCEL)
 130             {
 131                 otherButtonTitle = cfCancelString;
 132                 m_buttonId[2] = wxID_CANCEL;
 133             }
 134         }
 135         else
 136         {
 137             // the MSW implementation even shows an OK button if it is not specified, we'll do the same
 138             m_buttonId[0] = wxID_OK;
 139             // using null as default title does not work on earlier systems
 140             defaultButtonTitle = cfOKString;
 141             if (style & wxCANCEL)
 142             {
 143                 alternateButtonTitle = cfCancelString;
 144                 m_buttonId[1] = wxID_CANCEL;
 145             }
 146         }
 147
 148         wxASSERT_MSG( !(style & wxHELP), "wxHELP not supported in non-GUI thread" );
 149
 150         CFOptionFlags exitButton;
 151         OSStatus err = CFUserNotificationDisplayAlert(
 152             0, alertType, NULL, NULL, NULL, cfTitle, cfText,
 153             defaultButtonTitle, alternateButtonTitle, otherButtonTitle, &exitButton );
 154         if (err == noErr)
 155             resultbutton = m_buttonId[exitButton];
 156     }
 157     else
 158     {
 159         NSAlert* alert = (NSAlert*)ConstructNSAlert();
 160
 161         int button = -1;
 162         button = [alert runModal];
 163         [alert release];
 164         ModalFinishedCallback(alert, button);
 165     }
 166
 167     return GetReturnCode();
 168 }
 169
 170 void wxMessageDialog::ShowWindowModal()
 171 {
 172     NSAlert* alert = (NSAlert*)ConstructNSAlert();
 173
 174     wxNonOwnedWindow* parentWindow = NULL;
 175
 176     m_modality = wxDIALOG_MODALITY_WINDOW_MODAL;
 177
 178     if (GetParent())
 179         parentWindow = dynamic_cast<wxNonOwnedWindow*>(wxGetTopLevelParent(GetParent()));
 180
 181     wxASSERT_MSG(parentWindow, "Window modal display requires parent.");
 182
 183     if (parentWindow)
 184     {
 185         NSWindow* nativeParent = parentWindow->GetWXWindow();
 186         [alert beginSheetModalForWindow: nativeParent modalDelegate: m_sheetDelegate
 187             didEndSelector: @selector(sheetDidEnd:returnCode:contextInfo:)
 188             contextInfo: nil];
 189     }
 190 }
 191
 192 void wxMessageDialog::ModalFinishedCallback(void* WXUNUSED(panel), int resultCode)
 193 {
 194     int resultbutton = wxID_CANCEL;
 195     if ( resultCode < NSAlertFirstButtonReturn )
 196         resultbutton = wxID_CANCEL;
 197     else
 198     {
 199         if ( resultCode - NSAlertFirstButtonReturn < m_buttonCount )
 200             resultbutton = m_buttonId[ resultCode - NSAlertFirstButtonReturn ];
 201         else
 202             resultbutton = wxID_CANCEL;
 203     }
 204     SetReturnCode(resultbutton);
 205
 206     if (GetModality() == wxDIALOG_MODALITY_WINDOW_MODAL)
 207         SendWindowModalDialogEvent ( wxEVT_WINDOW_MODAL_DIALOG_CLOSED  );
 208 }
 209
 210 void* wxMessageDialog::ConstructNSAlert()
 211 {
 212     const long style = GetMessageDialogStyle();
 213
 214     wxASSERT_MSG( (style & 0x3F) != wxYES, wxT("this style is not supported on Mac") );
 215
 216     // work out what to display
 217     // if the extended text is empty then we use the caption as the title
 218     // and the message as the text (for backwards compatibility)
 219     // but if the extended message is not empty then we use the message as the title
 220     // and the extended message as the text because that makes more sense
 221
 222     wxString msgtitle,msgtext;
 223     if(m_extendedMessage.IsEmpty())
 224     {
 225         msgtitle = m_caption;
 226         msgtext  = m_message;
 227     }
 228     else
 229     {
 230         msgtitle = m_message;
 231         msgtext  = m_extendedMessage;
 232     }
 233
 234     NSAlert* alert = [[NSAlert alloc] init];
 235     NSAlertStyle alertType = GetAlertStyleFromWXStyle(style);
 236
 237     wxCFStringRef cfNoString( wxControl::GetLabelText(GetNoLabel()), GetFont().GetEncoding() );
 238     wxCFStringRef cfYesString( wxControl::GetLabelText(GetYesLabel()), GetFont().GetEncoding() );
 239     wxCFStringRef cfOKString( wxControl::GetLabelText(GetOKLabel()), GetFont().GetEncoding() );
 240     wxCFStringRef cfCancelString( wxControl::GetLabelText(GetCancelLabel()), GetFont().GetEncoding() );
 241
 242     wxCFStringRef cfTitle( msgtitle, GetFont().GetEncoding() );
 243     wxCFStringRef cfText( msgtext, GetFont().GetEncoding() );
 244
 245     [alert setMessageText:cfTitle.AsNSString()];
 246     [alert setInformativeText:cfText.AsNSString()];
 247     [alert setAlertStyle:alertType];
 248
 249     m_buttonCount = 0;
 250
 251     if (style & wxYES_NO)
 252     {
 253         if ( style & wxNO_DEFAULT )
 254         {
 255             [alert addButtonWithTitle:cfNoString.AsNSString()];
 256             m_buttonId[ m_buttonCount++ ] = wxID_NO;
 257             [alert addButtonWithTitle:cfYesString.AsNSString()];
 258             m_buttonId[ m_buttonCount++ ] = wxID_YES;
 259         }
 260         else
 261         {
 262             [alert addButtonWithTitle:cfYesString.AsNSString()];
 263             m_buttonId[ m_buttonCount++ ] = wxID_YES;
 264             [alert addButtonWithTitle:cfNoString.AsNSString()];
 265             m_buttonId[ m_buttonCount++ ] = wxID_NO;
 266         }
 267
 268         if (style & wxCANCEL)
 269         {
 270             [alert addButtonWithTitle:cfCancelString.AsNSString()];
 271             m_buttonId[ m_buttonCount++ ] = wxID_CANCEL;
 272         }
 273     }
 274     // the MSW implementation even shows an OK button if it is not specified, we'll do the same
 275     else
 276     {
 277         if ( style & wxCANCEL_DEFAULT )
 278         {
 279             [alert addButtonWithTitle:cfCancelString.AsNSString()];
 280             m_buttonId[ m_buttonCount++ ] = wxID_CANCEL;
 281
 282             [alert addButtonWithTitle:cfOKString.AsNSString()];
 283             m_buttonId[ m_buttonCount++ ] = wxID_OK;
 284         }
 285         else
 286         {
 287             [alert addButtonWithTitle:cfOKString.AsNSString()];
 288             m_buttonId[ m_buttonCount++ ] = wxID_OK;
 289             if (style & wxCANCEL)
 290             {
 291                 [alert addButtonWithTitle:cfCancelString.AsNSString()];
 292                 m_buttonId[ m_buttonCount++ ] = wxID_CANCEL;
 293             }
 294         }
 295
 296     }
 297
 298     if ( style & wxHELP )
 299     {
 300         wxCFStringRef cfHelpString( GetHelpLabel(), GetFont().GetEncoding() );
 301         [alert addButtonWithTitle:cfHelpString.AsNSString()];
 302         m_buttonId[ m_buttonCount++ ] = wxID_HELP;
 303     }
 304
 305     wxASSERT_MSG( m_buttonCount <= WXSIZEOF(m_buttonId), "Too many buttons" );
 306
 307     return alert;
 308 }