asquare.gwt.tests.circularbinding.client.Demo.java Source code

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Here is the source code for asquare.gwt.tests.circularbinding.client.Demo.java

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/*
 * Copyright 2006 Mat Gessel <mat.gessel@gmail.com>
 * 
 * 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 asquare.gwt.tests.circularbinding.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.dom.client.MouseDownEvent;
import com.google.gwt.event.dom.client.MouseDownHandler;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextArea;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

public class Demo implements EntryPoint {
    public void onModuleLoad() {
        RootPanel.get().add(createDemoPanel());
    }

    private Widget createDemoPanel() {
        VerticalPanel outer = new VerticalPanel();

        final TextArea output = new TextArea();
        outer.add(output);

        Label label = new Label("Click me");
        label.addMouseDownHandler(new MouseDownHandler() {
            public void onMouseDown(MouseDownEvent event) {
                // this works
                output.setText("x=" + DOM2.eventGetClientX());

                // this results in an infinite loop
                output.setText(output.getText() + "\r\ny=" + DOM2.eventGetClientY());
            }
        });
        DOM.setStyleAttribute(label.getElement(), "border", "solid black 1px");
        outer.insert(label, 0);

        return outer;
    }
}