/*
* Copyright 2010 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.examples.view;
import com.google.gwt.cell.client.TextCell;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.cellview.client.CellList;
import com.google.gwt.user.client.ui.Button;
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.view.client.ListDataProvider;
import java.util.List;
/**
* Example of {@link ListDataProvider}.
*/
public class ListDataProviderExample implements EntryPoint {
public void onModuleLoad() {
// Create a CellList.
CellList<String> cellList = new CellList<String>(new TextCell());
// Create a list data provider.
final ListDataProvider<String> dataProvider = new ListDataProvider<String>();
// Add the cellList to the dataProvider.
dataProvider.addDataDisplay(cellList);
// Create a form to add values to the data provider.
final TextBox valueBox = new TextBox();
valueBox.setText("Enter new value");
Button addButton = new Button("Add value", new ClickHandler() {
public void onClick(ClickEvent event) {
// Get the value from the text box.
String newValue = valueBox.getText();
// Get the underlying list from data dataProvider.
List<String> list = dataProvider.getList();
// Add the value to the list. The dataProvider will update the cellList.
list.add(newValue);
}
});
// Add the widgets to the root panel.
VerticalPanel vPanel = new VerticalPanel();
vPanel.add(valueBox);
vPanel.add(addButton);
vPanel.add(cellList);
RootPanel.get().add(vPanel);
}
}