#include <WKGL.h>
#include <fstream.h>

using namespace wkgl;

///////////////////////////////////////////////////////////////////////////////
///Prototypes
BOOL onNew(MenuItem* item, UINT message); //New menuitem callback
BOOL onSave(MenuItem* item, UINT message);//Save menuitem callback
BOOL onExit(MenuItem* item, UINT message);//Exit menuitem callback
void createMenu( MenuBar& mbar );         //Create Menubar function

///////////////////////////////////////////////////////////////////////////////
///Global components
MultilineEdit* me;                        //Edit window

///////////////////////////////////////////////////////////////////////////////
///Main function
WPARAM main()
{
  Window win( "Menu Bar Test" );          //Create the menu bar
  me = new MultilineEdit( 0, 0, 0, 0 );   //Create the edit window
  
  MenuBar mbar( &win );                   //Create the menu bar
  createMenu( mbar );                     //Add the menu items

  win.setMenuBar( &mbar );                //Set the menu bar
  win.add( me );                          //Add the edit window

  win.show();                             //Show the window

  //Set the edit window to the size of the window
  me->setSize( win.getWidth(), win.getHeight() );

  //Start processing
  WPARAM param = win.beginMessageLoop();

  //Delete the edit window
  delete me;

  return param;
}

///////////////////////////////////////////////////////////////////////////////
///Create the menu for the menu bar
void createMenu( MenuBar& mbar )
{
  Menu *menu = new Menu( "&File" );       //Create sub-menu called File
  
  MenuItem* mi = new MenuItem( "&New" );  //Create a menu item called New
  mi->addMenuCallBack( onNew );           //Set its callback
  menu->append( mi );                     //Append to the sub-menu

  mi = new MenuItem( "&Save" );           //Create a menu item called Save
  mi->addMenuCallBack( onSave );          //Set its callback
  menu->append( mi );                     //Append to the sub-menu

  mi = new MenuItem( "E&xit" );           //Create a menu item called Exit
  mi->addMenuCallBack( onExit );          //Set its callback
  menu->append( mi );                     //Append it to the sub-menu

  mbar.append( menu );                    //Append the sub-menu to the menu bar
}

///////////////////////////////////////////////////////////////////////////////
///Callback for "New" menu item
BOOL onNew(MenuItem* item, UINT message)
{
  //Set the edit window's text to \0 which 
  //in effect empties the window
  me->setText( "" );

  return TRUE;
}

///////////////////////////////////////////////////////////////////////////////
///Callback for "Save" menu item
BOOL onSave(MenuItem* item, UINT message)
{
  static char text[256];                  //Text buffer
  
  //Display the save file dialog
  char *fname = showSaveFileDlg( me->getParent() );
  
  //If the user pressed OK
  if ( fname != NULL )
  {
    me->getText( text, 256 );             //Get the edit window's text
    ofstream fout( fname );               //Open the file the user selected

    //Make sure it is open
    if ( fout.is_open() )
      fout << text;                       //Output the edit window's text

    fout.close();                         //Close the file
    delete[] fname;                       //Delete the file name
  }

  return TRUE;
}

///////////////////////////////////////////////////////////////////////////////
///Callback for "Exit" menu item
BOOL onExit(MenuItem* item, UINT message)
{
  //Quit the application.
  Window::quitApp();


  return TRUE;
}