net.autosauler.ballance.client.gui.ChangeLogPanel.java Source code

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Here is the source code for net.autosauler.ballance.client.gui.ChangeLogPanel.java

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/*******************************************************************************
 * Copyright 2011 Alex 'Ript' Malyshev <alexript@gmail.com>
 * 
 * Licensed 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 net.autosauler.ballance.client.gui;

import java.util.List;

import com.allen_sauer.gwt.log.client.Log;
import com.extjs.gxt.ui.client.widget.menu.MenuItem;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Response;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.DecoratorPanel;
import com.google.gwt.user.client.ui.HTML;

/**
 * The Class ChangeLogPanel.
 * 
 * @author alexript
 */
public class ChangeLogPanel extends Composite implements IPaneWithMenu {

    /** The impl. */
    private static ChangeLogPanel impl = null;

    /** The d. */
    private static DecoratorPanel d;

    /**
     * Gets the.
     * 
     * @return the license panel
     */
    public static ChangeLogPanel get() {
        if (impl == null) {
            impl = new ChangeLogPanel();
        }
        return impl;
    }

    /**
     * Instantiates a new change log panel.
     */
    private ChangeLogPanel() {

        MainPanel.setCommInfo(true);
        try {
            new RequestBuilder(RequestBuilder.GET, "CHANGELOG").sendRequest("", new RequestCallback() {
                @Override
                public void onError(Request res, Throwable throwable) {
                    MainPanel.setCommInfo(false);
                    Log.error(throwable.getMessage());
                }

                @Override
                public void onResponseReceived(Request request, Response response) {
                    MainPanel.setCommInfo(false);
                    String text = response.getText();
                    HTML w = new HTML("<p>" + text + "</p>");
                    d.setWidget(w);

                }
            });
        } catch (RequestException e) {
            MainPanel.setCommInfo(false);
            Log.error(e.getMessage());
        }

        d = new DecoratorPanel();
        d.setWidth("100%");

        initWidget(d);
    }

    @Override
    public List<MenuItem> getHelpItems() {

        return null;
    }

    /*
     * (non-Javadoc)
     * 
     * @see net.autosauler.ballance.client.gui.IPaneWithMenu#getPaneMenu()
     */
    @Override
    public com.extjs.gxt.ui.client.widget.menu.MenuBar getPaneMenu() {

        return null;
    }

}