com.tractionsoftware.gwt.demo.opacity.client.OpacityDemo.java Source code

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Here is the source code for com.tractionsoftware.gwt.demo.opacity.client.OpacityDemo.java

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/*
 * Copyright 2010 Traction Software, 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.tractionsoftware.gwt.demo.opacity.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.tractionsoftware.gwt.user.client.animation.OpacityAnimation;

public class OpacityDemo implements EntryPoint {

    private TextBox startOpacity;
    private TextBox endOpacity;
    private TextBox duration;

    @Override
    public void onModuleLoad() {

        Panel controls = RootPanel.get("controls");

        startOpacity = createTextBox("1.0");
        endOpacity = createTextBox("0.1");
        duration = createTextBox("5000");

        addTextBox(controls, "Start Opacity", startOpacity);
        addTextBox(controls, "End Opacity", endOpacity);
        addTextBox(controls, "Duration", duration);

        Button start = new Button("Start");
        start.addClickHandler(new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                OpacityAnimation animation = new OpacityAnimation(
                        new Element[] { Document.get().getElementById("box1"),
                                Document.get().getElementById("box2"), Document.get().getElementById("box3") },
                        Float.parseFloat(startOpacity.getText()), Float.parseFloat(endOpacity.getText()));
                animation.run(Integer.parseInt(duration.getText()));
            }
        });

        controls.add(start);
    }

    private static final TextBox createTextBox(String text) {
        TextBox ret = new TextBox();
        ret.setVisibleLength(10);
        ret.setText(text);
        return ret;
    }

    private static final void addTextBox(Panel panel, String label, TextBox box) {
        panel.add(new Label(label));
        panel.add(box);
    }

}