// Parses an XML file using DOM and shows the structure in the listview in the PlayGround
function parseXML()
{
    var fn = FileDialog.getOpenFileName();
    if ( fn.isEmpty() )
	return;
    
    var f = new File( fn );
    if ( !f.open( f.ReadOnly ) )
	return;

    var d = new DomDocument( f.readAll() );
    listView.clear();
    var i = new QListViewItem( listView );
    i.open = true;
    i.setText( 0, "<none>" );
    i.setText( 1, "Document" );
    insertNode( d.firstChild(), i );
}

// Helper function for the XML parsing
private function insertNode( n, i )
{
    var parent = i;
    for ( ; !n.isNull; n = n.nextSibling() ) {
	t = n.toText();
	if ( !t.isNull ) {
	    i = new QListViewItem( parent );
	    i.open = true;
	    i.setText( 0, "Text" );
	    i.setText( 1, t.data );
	    continue;
	}
	e = n.toElement();
	if ( !e.isNull ) {
	    i = new QListViewItem( parent );
	    i.open = true;
	    i.setText( 0, "Element" );
	    i.setText( 1, e.tagName );
	    insertNode( n.firstChild(), i );
	}
    }
}

// connect signals and slots in code
function connectSliderAndLCDNumber()
{
    connect( slider, "valueChanged(int)", lcdNumber, "display(int)" );
    MessageBox.information( "Connected slider and LCDNumber. Move the slider!!!", "Info" );
}