src/motif/msgdlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msgdlg.cpp
   3 // Purpose:     wxMessageDialog
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "msgdlg.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 #include <X11/Xlib.h>
  25
  26 #include <Xm/Xm.h>
  27 #include <Xm/MessageB.h>
  28
  29 #include "wx/app.h"
  30 #include "wx/intl.h"
  31 #include "wx/motif/msgdlg.h"
  32 #include "wx/motif/private.h"
  33
  34 // ----------------------------------------------------------------------------
  35 // macros
  36 // ----------------------------------------------------------------------------
  37
  38 #if !USE_SHARED_LIBRARY
  39     IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  40 #endif
  41
  42 // ============================================================================
  43 // implementation
  44 // ============================================================================
  45
  46 // ----------------------------------------------------------------------------
  47 // the callbacks for message box buttons
  48 // ----------------------------------------------------------------------------
  49
  50 // the common part
  51 static void msgboxCallBack(Widget w, int client_data, int id)
  52 {
  53     // close the dialog
  54     XtUnmanageChild(w);
  55
  56     wxMessageDialog *dlg = (wxMessageDialog *)client_data;
  57     dlg->SetResult(id);
  58 }
  59
  60 static void msgboxCallBackOk(Widget w,
  61                              int client_data,
  62                              XmAnyCallbackStruct *call_data)
  63 {
  64     msgboxCallBack(w, client_data, wxID_OK);
  65 }
  66
  67 static void msgboxCallBackCancel(Widget w,
  68                                  int client_data,
  69                                  XmAnyCallbackStruct *call_data)
  70 {
  71     msgboxCallBack(w, client_data, wxID_CANCEL);
  72 }
  73
  74 static void msgboxCallBackClose(Widget w,
  75                                 int client_data,
  76                                 XmAnyCallbackStruct *call_data)
  77 {
  78     msgboxCallBack(w, client_data, wxID_CANCEL);
  79 }
  80
  81 // ----------------------------------------------------------------------------
  82 // wxMessageDialog
  83 // ----------------------------------------------------------------------------
  84
  85 wxMessageDialog::wxMessageDialog(wxWindow *parent,
  86                                  const wxString& message,
  87                                  const wxString& caption,
  88                                  long style,
  89                                  const wxPoint& pos)
  90 {
  91     m_caption = caption;
  92     m_message = message;
  93     m_dialogStyle = style;
  94     m_parent = parent;
  95 }
  96
  97 int wxMessageDialog::ShowModal()
  98 {
  99     Widget (*dialogCreateFunction)(Widget, String, ArgList, Cardinal) = NULL;
 100     if ( m_dialogStyle & wxYES_NO )
 101     {
 102         // if we have [Yes], it must be a question
 103         dialogCreateFunction = XmCreateQuestionDialog;
 104
 105         // TODO we could support this by using the help button...
 106         wxASSERT_MSG( !(m_dialogStyle & wxCANCEL), "not supported" );
 107     }
 108     else if ( m_dialogStyle & wxICON_STOP )
 109     {
 110         // error dialog is the one with error icon...
 111         dialogCreateFunction = XmCreateErrorDialog;
 112     }
 113     else if ( m_dialogStyle & wxICON_EXCLAMATION )
 114     {
 115         // ...and the warning dialog too
 116         dialogCreateFunction = XmCreateWarningDialog;
 117     }
 118     else
 119     {
 120         // finally, use the info dialog by default
 121         dialogCreateFunction = XmCreateInformationDialog;
 122     }
 123
 124     // prepare the arg list
 125     Arg args[2];
 126     int ac = 0;
 127
 128     wxXmString text(m_message);
 129     wxXmString title(m_caption);
 130     XtSetArg(args[ac], XmNmessageString, text()); ac++;
 131     XtSetArg(args[ac], XmNdialogTitle, title()); ac++;
 132
 133     // do create message box
 134     Widget wParent = m_parent ? GetWidget(m_parent) : NULL;
 135     if ( !wParent )
 136     {
 137         wxWindow *window = wxTheApp->GetTopWindow();
 138         if ( !window )
 139         {
 140             wxFAIL_MSG("can't show message box without parent window");
 141
 142             return wxID_CANCEL;
 143         }
 144
 145         wParent = GetWidget(window);
 146     }
 147
 148     Widget wMsgBox = (*dialogCreateFunction)(wParent, "", args, ac);
 149
 150     wxCHECK_MSG( wMsgBox, wxID_CANCEL, "msg box creation failed" );
 151
 152     // remove the [Help] button which wouldn't do anything anyhow
 153     XtUnmanageChild(XmMessageBoxGetChild(wMsgBox, XmDIALOG_HELP_BUTTON));
 154
 155     // and the [Cancel] button too if we were not asked for it
 156     if ( !(m_dialogStyle & wxCANCEL) )
 157     {
 158         Widget wBtnCancel = XmMessageBoxGetChild(wMsgBox,
 159                                                  XmDIALOG_CANCEL_BUTTON);
 160
 161         // ... unless it's a wxYES_NO dialog in which case we just rename
 162         // [Cancel] to [No] instead
 163         if ( m_dialogStyle & wxYES_NO )
 164         {
 165             Widget wBtnOk = XmMessageBoxGetChild(wMsgBox,
 166                                                  XmDIALOG_OK_BUTTON);
 167
 168             wxXmString yes(_("Yes")), no(_("No"));
 169             XtVaSetValues(wBtnOk, XmNlabelString, yes(), NULL);
 170             XtVaSetValues(wBtnCancel, XmNlabelString, no(), NULL);
 171         }
 172         else
 173         {
 174             XtUnmanageChild(wBtnCancel);
 175         }
 176     }
 177
 178     // set the callbacks for the message box buttons
 179     XtAddCallback(wMsgBox, XmNokCallback,
 180                   (XtCallbackProc)msgboxCallBackOk, (XtPointer)this);
 181     XtAddCallback(wMsgBox, XmNcancelCallback,
 182                   (XtCallbackProc)msgboxCallBackCancel, (XtPointer)this);
 183
 184     XtAddCallback(wMsgBox, XmNunmapCallback,
 185                   (XtCallbackProc)msgboxCallBackClose, (XtPointer)this);
 186
 187     // show it as a modal dialog
 188     XtManageChild(wMsgBox);
 189     XtAddGrab(wMsgBox, True, False);
 190
 191     // the m_result will be changed when message box goes away
 192     m_result = -1;
 193
 194     // local message loop
 195     XtAppContext context = XtWidgetToApplicationContext(wParent);
 196     XEvent event;
 197     while ( m_result == -1 )
 198     {
 199         XtAppNextEvent(context, &event);
 200         XtDispatchEvent(&event);
 201     }
 202
 203     // translate the result if necessary
 204     if ( m_dialogStyle & wxYES_NO )
 205     {
 206         if ( m_result == wxID_OK )
 207             m_result = wxID_YES;
 208         else if ( m_result == wxID_CANCEL )
 209             m_result = wxID_NO;
 210     }
 211
 212     return m_result;
 213 }
 214