com.google.sampling.experiential.client.ListChoicePanel.java Source code

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Here is the source code for com.google.sampling.experiential.client.ListChoicePanel.java

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/*
* Copyright 2011 Google Inc. All Rights Reserved.
* 
* 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.
*/
// Copyright 2010 Google Inc. All Rights Reserved.

package com.google.sampling.experiential.client;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.TextBox;

/**
 * Panel to show one individual list choice item. This is part of the 
 * definition of an input whose responsetype is list.
 * 
 * @author Bob Evans
 *
 */
public class ListChoicePanel extends Composite {

    private ListChoicesPanel parent;
    private HorizontalPanel horizontalPanel;
    private TextBox textField;

    /**
     * @param listChoicesPanel
     */
    public ListChoicePanel(ListChoicesPanel listChoicesPanel) {
        this.parent = listChoicesPanel;
        horizontalPanel = new HorizontalPanel();
        horizontalPanel.setSpacing(2);
        horizontalPanel.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
        initWidget(horizontalPanel);
        horizontalPanel.setWidth("258px");

        Label lblTime = new Label("Choice: ");
        lblTime.setStyleName("gwt-Label-Header");
        horizontalPanel.add(lblTime);
        lblTime.setWidth("45px");

        textField = new TextBox();
        horizontalPanel.add(textField);
        textField.addValueChangeHandler(new ValueChangeHandler() {
            public void onValueChange(ValueChangeEvent event) {
                updateChoice();
            }
        });

        Button btnDelete = new Button("-");
        btnDelete.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                deleteThis();
            }

        });
        horizontalPanel.add(btnDelete);

        Button btnAdd = new Button("+");
        horizontalPanel.add(btnAdd);

        btnAdd.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                addChoicePanel();
            }

        });
    }

    protected void updateChoice() {
        parent.updateChoice(this);
    }

    protected void addChoicePanel() {
        parent.addChoice(this);
    }

    private void deleteThis() {
        parent.deleteChoice(this);
    }

    /**
     * @return
     */
    public String getChoice() {
        return textField.getText();
    }

    public void setChoice(String choice) {
        textField.setText(choice);
    }

    public TextBox getTextField() {
        return textField;
    }

}