/* $XConsortium: interface.c /main/4 1995/07/15 20:39:56 drk $ */
/*
 * Motif
 *
 * Copyright (c) 1987-2012, The Open Group. All rights reserved.
 *
 * These libraries and programs are free software; you can
 * redistribute them and/or modify them under the terms of the GNU
 * Lesser General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * These libraries and programs are distributed in the hope that
 * they will be useful, but WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with these librararies and programs; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA 02110-1301 USA
 * 
 */
/*
 * HISTORY
 */
#include <stdio.h>
#include <stdlib.h>
#include <Xm/XmAll.h>

void CreateMenus(Widget);
void HelpCB(Widget, XtPointer, XtPointer); 
void QuitCB(Widget, XtPointer, XtPointer); 
extern Widget top_level;

/**************************************************************************
CreateMenus: This function generates the menu bar and the submenus. 
**************************************************************************/
void 
CreateMenus(Widget parent_of_menu_bar)
{
 XmString   file, help;
 Widget     menubar, FilePullDown, HelpPullDown;
 Widget     overview, quit, Help1; 

 /* Create the menubar itself. */
   file = XmStringCreateSimple("File");
   help = XmStringCreateSimple("Help");
   
   menubar      = (Widget)XmCreateMenuBar(parent_of_menu_bar, "menubar", 
                                          NULL, 0);
   FilePullDown = (Widget)XmCreatePulldownMenu(menubar, "FilePullDown", 
                                               NULL, 0); 
   HelpPullDown = (Widget)XmCreatePulldownMenu(menubar, "HelpPullDown", 
                                                 NULL, 0); 

 /******************************FILE*********************************/
    XtVaCreateManagedWidget("File", xmCascadeButtonWidgetClass, menubar,
                             XmNlabelString, file,
                             XmNmnemonic, 'F', 
                             XmNsubMenuId, FilePullDown,
                             NULL);
    quit = XtVaCreateManagedWidget("Quit", xmPushButtonGadgetClass, 
                                    FilePullDown, NULL);
    XtAddCallback(quit, XmNactivateCallback, QuitCB, NULL);


 /******************************HELP*********************************/
    Help1 = XtVaCreateManagedWidget("Help", xmCascadeButtonWidgetClass, 
                             menubar,
                             XmNlabelString, help,
                             XmNmnemonic, 'H', 
                             XmNsubMenuId, HelpPullDown,
                             NULL);
    XtVaSetValues(menubar, XmNmenuHelpWidget, Help1, NULL);
    overview = XtVaCreateManagedWidget("Overview", xmPushButtonGadgetClass, 
                                    HelpPullDown, NULL);
    XtAddCallback(overview, XmNactivateCallback, HelpCB, (XtPointer)1);

    XmStringFree(file);
    XmStringFree(help);

    XtManageChild(menubar); 
}



/*********************************************************************
HelpCB: This function is called when the user requests help.  This
        function displays a Message DialogBox. 
*********************************************************************/
void
HelpCB(Widget   w,
       XtPointer cd,
       XtPointer cb
      )
{
 int       what_kind_of_help = (int)cd;  
 char      help_string[400]; 
 XmString  hs_as_cs; 
 Widget    dialog_general_help; 
 Arg       arg[3];

 sprintf(help_string, 
"This program demonstrates how to use an XmContainer in an application.\n\
You can toggle the arrows to expand or collapse the hierarchy underneath.\n\
When you click on any label (like President), the application calls \n\
a callback.  The callback merely prints the word 'Ring!' to standard output.");

   hs_as_cs = XmStringCreateLtoR(help_string, 
                                 XmFONTLIST_DEFAULT_TAG);
   
   XtSetArg(arg[0], XmNmessageString, hs_as_cs);
   dialog_general_help = (Widget)XmCreateMessageDialog(top_level, 
                                             "message", arg, 1);
   XmStringFree(hs_as_cs);
 
   switch (what_kind_of_help)  {
     case 1: XtManageChild(dialog_general_help);
             break;
     default: /* no other help */
             break; 
   }
          
}



/*******************************************************************************
QuitCB: Exit 
*******************************************************************************/
void
QuitCB(Widget w, XtPointer cd, XtPointer cb)
{
  exit(0);
}
