CompareVersionsMVCResourceCommand.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 */

package com.liferay.wiki.web.internal.portlet.action;

import com.liferay.portal.kernel.portlet.bridges.mvc.BaseMVCResourceCommand;
import com.liferay.portal.kernel.portlet.bridges.mvc.MVCResourceCommand;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.wiki.constants.WikiPortletKeys;
import com.liferay.wiki.engine.impl.WikiEngineRenderer;

import javax.portlet.ResourceRequest;
import javax.portlet.ResourceResponse;

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

/**
 * @author Bruno Farache
 * @author Julio Camarero
 */
@Component(
	immediate = true,
	property = {
		"javax.portlet.name=" + WikiPortletKeys.WIKI,
		"javax.portlet.name=" + WikiPortletKeys.WIKI_ADMIN,
		"javax.portlet.name=" + WikiPortletKeys.WIKI_DISPLAY,
		"mvc.command.name=/wiki/compare_versions"
	},
	service = MVCResourceCommand.class
)
public class CompareVersionsMVCResourceCommand extends BaseMVCResourceCommand {

	@Override
	protected void doServeResource(
			ResourceRequest resourceRequest, ResourceResponse resourceResponse)
		throws Exception {

		double sourceVersion = ParamUtil.getDouble(
			resourceRequest, "filterSourceVersion");
		double targetVersion = ParamUtil.getDouble(
			resourceRequest, "filterTargetVersion");

		String htmlDiffResult = ActionUtil.getHtmlDiffResult(
			sourceVersion, targetVersion, resourceRequest, resourceResponse,
			_wikiEngineRenderer);

		resourceRequest.setAttribute(WebKeys.DIFF_HTML_RESULTS, htmlDiffResult);

		include(
			resourceRequest, resourceResponse,
			"/wiki/compare_versions_diff_html.jsp");
	}

	@Reference(unbind = "-")
	protected void setWikiEngineRenderer(
		WikiEngineRenderer wikiEngineRenderer) {

		_wikiEngineRenderer = wikiEngineRenderer;
	}

	private WikiEngineRenderer _wikiEngineRenderer;

}