/*
 * @(#)BringToFrontCommand.java
 *
 * Project:		JHotdraw - a GUI framework for technical drawings
 *				http://www.jhotdraw.org
 *				http://jhotdraw.sourceforge.net
 * Copyright:	© by the original author(s) and all contributors
 * License:		Lesser GNU Public License (LGPL)
 *				http://www.opensource.org/licenses/lgpl-license.html
 */

package CH.ifa.draw.standard;

import CH.ifa.draw.framework.*;
import CH.ifa.draw.util.UndoableAdapter;
import CH.ifa.draw.util.Undoable;
import java.util.*;

/**
 * BringToFrontCommand brings the selected figures in the front of
 * the other figures.
 *
 * @see SendToBackCommand
 * @version <$CURRENT_VERSION$>
 */
public class BringToFrontCommand extends AbstractCommand {

   /**
    * Constructs a bring to front command.
    * @param name the command name
    * @param view the target view
    */
    public BringToFrontCommand(String name, DrawingView view) {
        super(name, view);
    }

    public void execute() {
    	setUndoActivity(createUndoActivity());
    	getUndoActivity().setAffectedFigures(view().selectionElements());
		FigureEnumeration fe = getUndoActivity().getAffectedFigures();
        while (fe.hasMoreElements()) {
            view().drawing().bringToFront(fe.nextFigure());
        }
        view().checkDamage();
    }

    public boolean isExecutable() {
        return view().selectionCount() > 0;
    }

	protected Undoable createUndoActivity() {
		return new BringToFrontCommand.UndoActivity(view());
	}

	public static class UndoActivity extends SendToBackCommand.UndoActivity {
		public UndoActivity(DrawingView newDrawingView) {
			super(newDrawingView);
		}

		protected void sendToCommand(Figure f) {
			getDrawingView().drawing().bringToFront(f);
		}
	}
}