TechLevelDecrementCommand.java

/*
 * Copyright (c) 1998-2017 by Richard A. Wilkes. All rights reserved.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, version 2.0. If a copy of the MPL was not distributed with
 * this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This Source Code Form is "Incompatible With Secondary Licenses", as
 * defined by the Mozilla Public License, version 2.0.
 */

package com.trollworks.gcs.menu.edit;

import com.trollworks.toolkit.annotation.Localize;
import com.trollworks.toolkit.ui.menu.Command;
import com.trollworks.toolkit.ui.widget.outline.OutlineProxy;
import com.trollworks.toolkit.utility.Localization;

import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;

/** Provides the "Decrement" command. */
public class TechLevelDecrementCommand extends Command {
	@Localize("Decrement Tech Level")
	private static String TITLE;

	static {
		Localization.initialize();
	}

	/** The action command this command will issue. */
	public static final String						CMD_DECREMENT_TL	= "DecrementTL";					//$NON-NLS-1$

	/** The singleton {@link TechLevelDecrementCommand}. */
	public static final TechLevelDecrementCommand	INSTANCE			= new TechLevelDecrementCommand();

	private TechLevelDecrementCommand() {
		super(TITLE, CMD_DECREMENT_TL, KeyEvent.VK_OPEN_BRACKET);
	}

	@Override
	public void adjust() {
		Component focus = getFocusOwner();
		if (focus instanceof OutlineProxy) {
			focus = ((OutlineProxy) focus).getRealOutline();
		}
		if (focus instanceof TechLevelIncrementable) {
			TechLevelIncrementable inc = (TechLevelIncrementable) focus;
			setEnabled(inc.canDecrementTechLevel());
		} else {
			setEnabled(false);
		}
	}

	@Override
	public void actionPerformed(ActionEvent event) {
		Component focus = getFocusOwner();
		if (focus instanceof OutlineProxy) {
			focus = ((OutlineProxy) focus).getRealOutline();
		}
		((TechLevelIncrementable) focus).decrementTechLevel();
	}
}