de.unioninvestment.eai.portal.support.vaadin.LiferayUI.java Source code

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Here is the source code for de.unioninvestment.eai.portal.support.vaadin.LiferayUI.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package de.unioninvestment.eai.portal.support.vaadin;

import javax.portlet.PortletRequest;

import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.portal.theme.ThemeDisplay;
import com.vaadin.server.VaadinPortletService;
import com.vaadin.server.VaadinRequest;
import com.vaadin.ui.UI;

/**
 * Unterklasse von PortletApplication fr Liferay, die Auskunft ber die
 * Portlet-ID und die Community-ID gibt.
 * 
 * @author carsten.mjartan
 */
public abstract class LiferayUI extends UI {

    private static final long serialVersionUID = 1L;

    public static LiferayUI getCurrent() {
        return (LiferayUI) UI.getCurrent();
    }

    private String portletId;
    private long communityId = -1;

    @Override
    public final void init(VaadinRequest request) {
        readContextInformationFromCurrentRequest();
        doInit(request);
    }

    private void readContextInformationFromCurrentRequest() {
        PortletRequest currentRequest = VaadinPortletService.getCurrentPortletRequest();
        if (currentRequest != null) {
            portletId = (String) currentRequest.getAttribute(WebKeys.PORTLET_ID);

            ThemeDisplay themeDisplay = (ThemeDisplay) currentRequest.getAttribute(WebKeys.THEME_DISPLAY);
            communityId = themeDisplay.getScopeGroupId();
        }
    }

    /**
     * @return the Liferay portlet id
     */
    public String getPortletId() {
        return portletId;
    }

    /**
     * @return die Liferay Community ID
     */
    public long getCommunityId() {
        return communityId;
    }

    /**
     * Von Unterklasse zu implementieren
     */
    public abstract void doInit(VaadinRequest request);
}