com.liferay.wiki.web.internal.portlet.action.WikiDisplayViewMVCRenderCommand.java Source code

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Here is the source code for com.liferay.wiki.web.internal.portlet.action.WikiDisplayViewMVCRenderCommand.java

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/**
 * 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.exception.PortalException;
import com.liferay.portal.kernel.portlet.bridges.mvc.MVCRenderCommand;
import com.liferay.portal.kernel.servlet.SessionErrors;
import com.liferay.portal.kernel.theme.ThemeDisplay;
import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.Validator;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.wiki.configuration.WikiGroupServiceConfiguration;
import com.liferay.wiki.constants.WikiPortletKeys;
import com.liferay.wiki.constants.WikiWebKeys;
import com.liferay.wiki.engine.impl.WikiEngineRenderer;
import com.liferay.wiki.exception.NoSuchNodeException;
import com.liferay.wiki.exception.NoSuchPageException;
import com.liferay.wiki.model.WikiNode;
import com.liferay.wiki.model.WikiPage;
import com.liferay.wiki.service.WikiNodeService;
import com.liferay.wiki.service.WikiPageService;
import com.liferay.wiki.web.util.WikiWebComponentProvider;

import javax.portlet.PortletException;
import javax.portlet.PortletPreferences;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

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

/**
 * @author Brian Wing Shun Chan
 */
@Component(immediate = true, property = { "javax.portlet.name=" + WikiPortletKeys.WIKI_DISPLAY,
        "mvc.command.name=/", "mvc.command.name=/wiki_display/view" }, service = MVCRenderCommand.class)
public class WikiDisplayViewMVCRenderCommand implements MVCRenderCommand {

    @Override
    public String render(RenderRequest renderRequest, RenderResponse renderResponse) throws PortletException {

        try {
            PortletPreferences portletPreferences = renderRequest.getPreferences();

            ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute(WebKeys.THEME_DISPLAY);

            WikiWebComponentProvider wikiWebComponentProvider = WikiWebComponentProvider
                    .getWikiWebComponentProvider();

            WikiGroupServiceConfiguration wikiGroupServiceConfiguration = wikiWebComponentProvider
                    .getWikiGroupServiceConfiguration();

            String title = ParamUtil.getString(renderRequest, "title",
                    portletPreferences.getValue("title", wikiGroupServiceConfiguration.frontPageName()));
            double version = ParamUtil.getDouble(renderRequest, "version");

            WikiNode node = getNode(renderRequest);

            if (node.getGroupId() != themeDisplay.getScopeGroupId()) {
                throw new NoSuchNodeException("{nodeId=" + node.getNodeId() + "}");
            }

            WikiPage page = _wikiPageService.fetchPage(node.getNodeId(), title, version);

            if ((page == null) || page.isInTrash()) {
                page = _wikiPageService.getPage(node.getNodeId(), wikiGroupServiceConfiguration.frontPageName());
            }

            renderRequest.setAttribute(WikiWebKeys.WIKI_ENGINE_RENDERER, _wikiEngineRenderer);
            renderRequest.setAttribute(WikiWebKeys.WIKI_NODE, node);
            renderRequest.setAttribute(WikiWebKeys.WIKI_PAGE, page);

            return "/wiki_display/view.jsp";
        } catch (NoSuchNodeException nsne) {
            return "/wiki_display/portlet_not_setup.jsp";
        } catch (NoSuchPageException nspe) {
            return "/wiki_display/portlet_not_setup.jsp";
        } catch (PortalException pe) {
            SessionErrors.add(renderRequest, pe.getClass());

            return "/wiki/error.jsp";
        }
    }

    protected WikiNode getNode(RenderRequest renderRequest) throws PortalException {

        PortletPreferences portletPreferences = renderRequest.getPreferences();

        ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute(WebKeys.THEME_DISPLAY);

        String nodeName = ParamUtil.getString(renderRequest, "nodeName");

        if (Validator.isNotNull(nodeName)) {
            return _wikiNodeService.getNode(themeDisplay.getScopeGroupId(), nodeName);
        } else {
            long nodeId = GetterUtil.getLong(portletPreferences.getValue("nodeId", StringPool.BLANK));

            return _wikiNodeService.getNode(nodeId);
        }
    }

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

        _wikiEngineRenderer = wikiEngineRenderer;
    }

    @Reference(unbind = "-")
    protected void setWikiNodeService(WikiNodeService wikiNodeService) {
        _wikiNodeService = wikiNodeService;
    }

    @Reference(unbind = "-")
    protected void setWikiPageService(WikiPageService wikiPageService) {
        _wikiPageService = wikiPageService;
    }

    private WikiEngineRenderer _wikiEngineRenderer;
    private WikiNodeService _wikiNodeService;
    private WikiPageService _wikiPageService;

}