com.blockwithme.client.WebApp.java Source code

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Here is the source code for com.blockwithme.client.WebApp.java

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/************************************************************************
 * This is a part of gwtwwlinker project
 * https://github.com/tomekziel/gwtwwlinker
 *
 * 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 com.blockwithme.client;

import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.slf4j.LoggerFactory;

import com.blockwithme.util.client.webworkers.WebWorker;
import com.blockwithme.util.client.webworkers.WebWorkerListener;
import com.blockwithme.util.client.webworkers.main.WebWorkerFacade;
import com.codahale.metrics.Counter;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.Slf4jReporter;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;

import elemental.html.Window;
import elemental.html.Worker;

public class WebApp implements EntryPoint {

    /** The Logger */
    private static final Logger LOG = Logger.getLogger("WebApp");

    private static native Window getWindow()
    /*-{
     return $wnd;
     }-*/;

    @Override
    public void onModuleLoad() {
        GWT.create(WebAppInjector.class);

        try {
            final MetricRegistry registry = new MetricRegistry();
            final Counter clicks = registry.counter(MetricRegistry.name("WebApp", "clicks"));
            final Slf4jReporter reporter = Slf4jReporter.forRegistry(registry)
                    .outputTo(LoggerFactory.getLogger("com.example.metrics")).convertRatesTo(TimeUnit.SECONDS)
                    .convertDurationsTo(TimeUnit.MILLISECONDS).build();
            reporter.start(5, TimeUnit.SECONDS);

            final Button startButton = new Button("Send msg to worker");
            RootPanel.get("container1").add(startButton);

            final Window window = getWindow();//elemental.client.Browser.getWindow();

            final WebWorker<Worker> worker = WebWorkerFacade.newWorker("sampleworker", new WebWorkerListener() {
                @Override
                public void onMessage(final String channel, final JSONObject message) {
                    final Label l = new Label("Worker says: " + channel + " => " + message);
                    RootPanel.get("container2").insert(l, 0);
                }
            });

            startButton.addClickHandler(new ClickHandler() {
                @Override
                public void onClick(final ClickEvent event) {
                    try {
                        clicks.inc();
                        worker.postMessage(null, "Hello worker");
                    } catch (final Exception e) {
                        window.alert("Error message from worker: " + e);
                    }
                }
            });
        } catch (final Exception e) {
            LOG.log(Level.SEVERE, "FAIL!", e);
        }
    }
}