com.example3.client.Hello.java Source code

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Here is the source code for com.example3.client.Hello.java

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/*
 * Copyright 2007 Google 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 com.example3.client;

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.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.RootPanel;

/**
 * HelloWorld application.
 * Package name changed from  com.google.gwt.sample.hello. to  com.example3.
 */
public class Hello implements EntryPoint {

    public void onModuleLoad() {
        thisHelloObj = this;
        Button b = new Button("Click me", new ClickHandler() {
            public void onClick(ClickEvent event) {
                Window.alert("Hello, AJAX");
                //  HelloJsonp.get();
            }
        });

        RootPanel.get().add(b);

        Button b2 = new Button("Click me b2", new ClickHandler() {
            public void onClick(ClickEvent event) {
                HelloFront front = new HelloFront();
                front.init();
            }
        });
        RootPanel.get().add(b2);
        thisHelloRoot = RootPanel.get();
    }

    public static void callback(String m) {
        Window.alert("Hello, AJAX\n" + m);
    }

    private static Hello thisHelloObj = null;
    private static RootPanel thisHelloRoot = null;

    public static void hookNewRoot(Panel pnl) {
        if (thisHelloObj == null) {
            GWT.log("Null thisHelloObj. Return", null);
            return;
        }
        if (thisHelloRoot == null) {
            GWT.log("Null thisHelloRoot. Return.", null);
            return;
        }
        if (pnl == null) {
            GWT.log("Null pnl. Return.", null);
            return;
        }
        thisHelloRoot.clear();
        thisHelloRoot.add(pnl);
    }
}