org.errai.samples.rpcdemo.client.local.RPCDemo.java Source code

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Here is the source code for org.errai.samples.rpcdemo.client.local.RPCDemo.java

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/*
 * Copyright 2010 JBoss, a divison Red Hat, Inc
 *
 * 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 org.errai.samples.rpcdemo.client.local;

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.user.client.Window;
import com.google.gwt.user.client.ui.*;
import org.errai.samples.rpcdemo.client.shared.TestException;
import org.errai.samples.rpcdemo.client.shared.TestService;
import org.jboss.errai.bus.client.api.BusErrorCallback;
import org.jboss.errai.common.client.api.Caller;
import org.jboss.errai.bus.client.api.messaging.Message;
import org.jboss.errai.common.client.api.RemoteCallback;
import org.jboss.errai.bus.client.api.base.MessageBuilder;
import org.jboss.errai.ioc.client.api.EntryPoint;

import javax.annotation.PostConstruct;
import javax.inject.Inject;
import java.util.Date;
import java.util.List;

import static java.lang.Long.parseLong;

@EntryPoint
public class RPCDemo {
    @Inject
    private Caller<TestService> testService;

    @PostConstruct
    public void init() {
        final Button checkMemoryButton = new Button("Check Memory Free");
        final Label memoryFreeLabel = new Label();

        final TextBox inputOne = new TextBox();
        final TextBox inputTwo = new TextBox();
        final Button appendTwoStrings = new Button("Append");
        final Label appendResult = new Label();

        checkMemoryButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent clickEvent) {
                testService.call(new RemoteCallback<Long>() {
                    @Override
                    public void callback(Long response) {
                        memoryFreeLabel.setText("Free Memory: " + response);
                    }
                }).getMemoryFree();
            }
        });

        appendTwoStrings.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent clickEvent) {
                testService.call(new RemoteCallback<String>() {
                    public void callback(String response) {
                        appendResult.setText(response);
                    }
                }).append(inputOne.getText(), inputTwo.getText());
            }
        });

        final Button voidReturn = new Button("Test Add", new ClickHandler() {
            public void onClick(ClickEvent clickEvent) {
                testService.call(new RemoteCallback<Long>() {
                    public void callback(Long response) {
                        appendResult.setText(String.valueOf(response));
                    }
                }).add(parseLong(inputOne.getText()), parseLong(inputTwo.getText()));
            }
        });

        final Button dates = new Button("Dates", new ClickHandler() {
            public void onClick(ClickEvent clickEvent) {
                MessageBuilder.createCall(new RemoteCallback<List<Date>>() {
                    public void callback(List<Date> response) {
                        appendResult.setText("");
                        for (Date d : response)
                            appendResult.setText(appendResult.getText() + " " + d.toString());
                    }
                }, TestService.class).getDates();
            }
        });

        final Button date = new Button("Date", new ClickHandler() {
            public void onClick(ClickEvent clickEvent) {
                MessageBuilder.createCall(new RemoteCallback<Date>() {
                    public void callback(Date response) {
                        appendResult.setText(response.toString());
                    }
                }, TestService.class).getDate();
            }
        });

        final Button exception = new Button("Exception", new ClickHandler() {
            public void onClick(ClickEvent clickEvent) {
                MessageBuilder.createCall(new RemoteCallback<Void>() {
                    public void callback(Void response) {
                    }
                }, new BusErrorCallback() {
                    public boolean error(Message message, Throwable throwable) {
                        try {
                            throw throwable;
                        } catch (TestException e) {
                            Window.alert("Success! TestException received from remote call.");
                        } catch (Throwable t) {
                            GWT.log("An unexpected error has occured", t);
                        }
                        return false;
                    }
                }, TestService.class).exception();
            }
        });

        VerticalPanel vPanel = new VerticalPanel();
        HorizontalPanel memoryFreeTest = new HorizontalPanel();
        memoryFreeTest.add(checkMemoryButton);
        memoryFreeTest.add(memoryFreeLabel);
        vPanel.add(memoryFreeTest);

        HorizontalPanel appendTest = new HorizontalPanel();
        appendTest.add(inputOne);
        appendTest.add(inputTwo);
        appendTest.add(appendTwoStrings);
        appendTest.add(appendResult);

        vPanel.add(appendTest);
        vPanel.add(voidReturn);
        vPanel.add(dates);
        vPanel.add(date);
        vPanel.add(exception);
        RootPanel.get().add(vPanel);
    }
}