/*******************************************************************************
 * Copyright (c) 2012 Rushan R. Gilmullin and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0 
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     Rushan R. Gilmullin - initial API and implementation
 *******************************************************************************/
 package org.eclipse.osbp.vaaclipse.theme;

import javax.inject.Inject;

import org.eclipse.e4.core.services.events.IEventBroker;
import org.eclipse.osbp.vaaclipse.publicapi.theme.Theme;
import org.eclipse.osbp.vaaclipse.publicapi.theme.ThemeConstants;
import org.eclipse.osbp.vaaclipse.publicapi.theme.ThemeEngine;
import org.eclipse.osbp.vaaclipse.publicapi.theme.ThemeManager;

/**
 * @author rushan
 *
 */
public class ThemeManagerImpl implements ThemeManager {
	@Inject
	IEventBroker eventBroker;

	@Inject
	private ThemeEngine themeEngine;

	private String themeId;

	@Override
	public String getThemeId() {
		return this.themeId;
	}

	@Override
	public ThemeEngine getThemeEngine() {
		return this.themeEngine;
	}

	@Override
	public Theme getTheme() {
		return themeEngine.getTheme(themeId);
	}

	@Override
	public void setTheme(String themeId) {
		if (this.themeId != null && this.themeId.equals(themeId))
			return;

		Theme theme = themeEngine.getTheme(themeId);
		if (theme == null)
			throw new IllegalArgumentException(String.format(
					"Theme with id=%s is not exists", themeId));
		this.themeId = themeId;
		eventBroker.send(ThemeConstants.Events.setThemeEvent, theme);
	}
}