com.google.gwt.gen2.demo.simplewidget.client.SimpleWidgetDemo.java Source code

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Here is the source code for com.google.gwt.gen2.demo.simplewidget.client.SimpleWidgetDemo.java

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/*
 * Copyright 2008 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.google.gwt.gen2.demo.simplewidget.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.gen2.commonwidget.client.SimpleWidget;
import com.google.gwt.gen2.event.dom.client.ClickEvent;
import com.google.gwt.gen2.event.dom.client.ClickHandler;
import com.google.gwt.gen2.event.dom.client.MouseDownEvent;
import com.google.gwt.gen2.event.dom.client.MouseDownHandler;
import com.google.gwt.gen2.event.dom.client.MouseMoveEvent;
import com.google.gwt.gen2.event.dom.client.MouseMoveHandler;
import com.google.gwt.gen2.event.dom.client.MouseUpEvent;
import com.google.gwt.gen2.event.dom.client.MouseUpHandler;
import com.google.gwt.gen2.logging.handler.client.SimpleLogHandler;
import com.google.gwt.gen2.logging.shared.Log;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class SimpleWidgetDemo implements EntryPoint {

    /**
     * This is the entry point method.
     */
    public void onModuleLoad() {
        // Set up log handler.

        SimpleLogHandler handler = new SimpleLogHandler();
        Log.addLogHandler(handler);

        HorizontalPanel p = new HorizontalPanel();
        VerticalPanel v = new VerticalPanel();
        p.add(v);
        p.add(handler);
        RootPanel.get().add(p);

        // Set up clickable widget.
        SimpleWidget clickable = new SimpleWidget("<h1>clickMe</h1>");
        RootPanel.get().add(clickable);
        clickable.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                report("clicked on clickable");
            }
        });
        v.add(clickable);

        // Set up mouse move widget.
        SimpleWidget mouseMove = new SimpleWidget("<h2>mouseMove</h2>");
        mouseMove.addMouseMoveHandler(new MouseMoveHandler() {
            public void onMouseMove(MouseMoveEvent event) {
                report("moved over mouseMove");
            }
        });
        v.add(mouseMove);

        // Set up mouse down and up handler, here some syntactic sugar would be nice
        // to have.

        SimpleWidget mouseDownAndUp = new SimpleWidget("<h3>mouse down and up events</h3>");
        RootPanel.get().add(mouseDownAndUp);
        v.add(mouseDownAndUp);
        class MyHandler implements MouseDownHandler, MouseUpHandler {
            public void onMouseDown(MouseDownEvent event) {
                report("on mouse down");
            }

            public void onMouseUp(MouseUpEvent event) {
                report("on mouse up");
            }
        }
        MyHandler myHandler = new MyHandler();
        mouseDownAndUp.addMouseDownHandler(myHandler);
        mouseDownAndUp.addMouseUpHandler(myHandler);
        v.add(mouseDownAndUp);
    }

    private void report(String string) {
        Log.info(string);
    }
}