mainentrypoint.java

netbeans开发gwt程式的插件

/*
 * MainEntryPoint.java
 *
 * Created on March 4, 2008, 12:24 PM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package my.company.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 *
 * @author sang
 */
public class MainEntryPoint implements EntryPoint {
   
    /** Creates a new instance of MainEntryPoint */
    public MainEntryPoint() {
    }
   
    /**
     * A composite of a TextBox and a CheckBox that optionally enables it.
     */
    public static class OptionalTextBox extends Composite implements
            ClickListener {
       
        private TextBox textBox = new TextBox();
        private CheckBox checkBox = new CheckBox();
       
        /**
         * Constructs an OptionalTextBox with the given caption on the check.
         *
         * @param caption the caption to be displayed with the check box
         */
        public OptionalTextBox(String caption) {
            // Place the check above the text box using a vertical panel.
            VerticalPanel panel = new VerticalPanel();
            panel.add(checkBox);
            panel.add(textBox);
           
            // Set the check box's caption, and check it by default.
            checkBox.setText(caption);
            checkBox.setChecked(true);
            checkBox.addClickListener(this);
           
            // All composites must call initWidget() in their constructors.
            initWidget(panel);
           
            // Give the overall composite a style name.
            setStyleName("example-OptionalCheckBox");
        }
       
        public void onClick(Widget sender) {
            if (sender == checkBox) {
                // When the check box is clicked, update the text box's enabled state.
                textBox.setEnabled(checkBox.isChecked());
            }
        }
       
        /**
         * Sets the caption associated with the check box.
         *
         * @param caption the check box's caption
         */
        public void setCaption(String caption) {
            // Note how we use the use composition of the contained widgets to provide
            // only the methods that we want to.
            checkBox.setText(caption);
        }
       
        /**
         * Gets the caption associated with the check box.
         *
         * @return the check box's caption
         */
        public String getCaption() {
            return checkBox.getText();
        }
    }
   
    public void onModuleLoad() {
        // Create an optional text box and add it to the root panel.
        OptionalTextBox otb = new OptionalTextBox("Check this to enable me");
        RootPanel.get().add(otb);
    }
     
}