/*******************************************************************************
 * Breakout Cave Survey Visualizer
 *
 * Copyright (C) 2014 James Edwards
 *
 * jedwards8 at fastmail dot fm
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *******************************************************************************/
package org.andork.awt.layout;

import java.awt.Component;
import java.awt.Container;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.SwingUtilities;

import org.andork.awt.layout.DelegatingLayoutManager.LayoutDelegate;

public class DrawerAutoshowController extends MouseAdapter {
	private static final class AutoshowDrawerHolder {

	}

	public static final AutoshowDrawerHolder autoshowDrawerHolder = new AutoshowDrawerHolder();

	int autoshowDistance = 30;

	public int getAutoshowDistance() {
		return autoshowDistance;
	}

	@Override
	public void mouseMoved(MouseEvent e) {
		Component c = e.getComponent();

		while (c != null && (!(c instanceof Container) ||
				!(((Container) c).getLayout() instanceof DelegatingLayoutManager))) {
			c = c.getParent();
		}

		if (c == null) {
			return;
		}

		Container parent = (Container) c;

		DelegatingLayoutManager layout = (DelegatingLayoutManager) parent.getLayout();

		for (Component comp : parent.getComponents()) {
			if (comp instanceof Drawer) {
				Drawer drawer = (Drawer) comp;
				Point p = SwingUtilities.convertPoint(e.getComponent(), e.getPoint(), comp);
				if (RectangleUtils.rectilinearDistance(SwingUtilities.getLocalBounds(comp), p) < autoshowDistance) {
					drawer.holder().hold(autoshowDrawerHolder);
				} else {
					drawer.holder().release(autoshowDrawerHolder);
				}
			} else {
				LayoutDelegate delegate = layout.getDelegate(comp);
				if (delegate instanceof DrawerLayoutDelegate) {
					DrawerLayoutDelegate drawerDelegate = (DrawerLayoutDelegate) delegate;

					Point p = SwingUtilities.convertPoint(e.getComponent(), e.getPoint(), comp);
					drawerDelegate.setOpen(RectangleUtils.rectilinearDistance(
							SwingUtilities.getLocalBounds(comp), p) < autoshowDistance);
				}
			}
		}
	}

	public void setAutoshowDistance(int autoshowDistance) {
		this.autoshowDistance = autoshowDistance;
	}
}