/*******************************************************************************
 * 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.breakout;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.util.HashSet;
import java.util.Set;

import javax.swing.JScrollPane;

import org.andork.awt.layout.Drawer;
import org.andork.awt.layout.Side;
import org.andork.event.HierarchicalBasicPropertyChangeAdapter;
import org.andork.swing.SpinnerButtonUI;
import org.andork.swing.async.TaskList;
import org.andork.swing.async.TaskService;

@SuppressWarnings("serial")
public class TaskListDrawer extends Drawer {
	private class SpinnerButtonController extends HierarchicalBasicPropertyChangeAdapter {
		@Override
		public void childrenChanged(Object source, ChangeType changeType, Object... children) {
			boolean hasTasks = false;
			for (TaskService service : taskServices) {
				hasTasks |= service.hasTasks();
			}
			((SpinnerButtonUI) pinButton().getUI()).setSpinning(hasTasks);
		}
	}

	/**
	 *
	 */
	private static final long serialVersionUID = 289947235883218171L;
	final Set<TaskService> taskServices = new HashSet<TaskService>();
	TaskList taskList;

	JScrollPane taskListScrollPane;

	SpinnerButtonController spinnerButtonController = new SpinnerButtonController();

	public TaskListDrawer() {
		taskList = new TaskList();
		taskListScrollPane = new JScrollPane(taskList);
		taskListScrollPane.setPreferredSize(new Dimension(400, 100));

		add(taskListScrollPane, BorderLayout.CENTER);
		delegate().dockingSide(Side.TOP);
		mainResizeHandle();
		pinButton().setUI(new SpinnerButtonUI());
		pinButton().setBackground(Color.BLACK);
	}

	public void addTaskService(TaskService taskService) {
		if (taskServices.add(taskService)) {
			taskList.addService(taskService);
			taskService.changeSupport().addPropertyChangeListener(spinnerButtonController);
		}
	}

	public void removeTaskService(TaskService taskService) {
		if (taskServices.add(taskService)) {
			taskList.removeService(taskService);
			taskService.changeSupport().removePropertyChangeListener(spinnerButtonController);
		}
	}
}