/*
* Copyright 2008 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.gen2.demo.scrolltable.client.option.setup;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.gen2.demo.scrolltable.client.ScrollTableDemo;
import com.google.gwt.gen2.demo.scrolltable.client.option.AbstractOption;
import com.google.gwt.gen2.demo.scrolltable.client.option.CustomForm;
import com.google.gwt.gen2.table.client.AbstractScrollTable;
import com.google.gwt.gen2.table.client.ScrollTable;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.Widget;
/**
* An option.
*/
public class ScrollPolicyOption extends AbstractOption {
private static final String DESC_SCROLLING = "Enable scrolling to confine "
+ "the data area to a scrollable window. Disable scrolling to allow the "
+ "data area to grow as needed to fit its content.";
/**
* The list box used to select the scrolling policy.
*/
private ListBox scrollPolicyBox = null;
@Override
protected String getDescription() {
return DESC_SCROLLING;
}
@Override
protected Widget onInitialize() {
CustomForm form = new CustomForm();
// Add the policy
scrollPolicyBox = new ListBox();
scrollPolicyBox.addItem("both");
scrollPolicyBox.addItem("horizontal");
scrollPolicyBox.addItem("disabled");
form.addLabeledWidget("Scroll Policy:", scrollPolicyBox);
refreshPolicy();
// Add button to change status
{
Button button = new Button("Set Scroll Policy", new ClickHandler() {
public void onClick(ClickEvent event) {
AbstractScrollTable scrollTable = ScrollTableDemo.get().getScrollTable();
switch (scrollPolicyBox.getSelectedIndex()) {
case 0:
scrollTable.setScrollPolicy(ScrollTable.ScrollPolicy.BOTH);
break;
case 1:
scrollTable.setScrollPolicy(ScrollTable.ScrollPolicy.HORIZONTAL);
break;
case 2:
scrollTable.setScrollPolicy(ScrollTable.ScrollPolicy.DISABLED);
break;
}
}
});
form.addButton(button);
}
return form;
}
/**
* Refresh the policy.
*/
private void refreshPolicy() {
ScrollTable.ScrollPolicy policy = ScrollTableDemo.get().getScrollTable().getScrollPolicy();
if (policy == ScrollTable.ScrollPolicy.BOTH) {
scrollPolicyBox.setSelectedIndex(0);
} else if (policy == ScrollTable.ScrollPolicy.BOTH) {
scrollPolicyBox.setSelectedIndex(1);
} else if (policy == ScrollTable.ScrollPolicy.DISABLED) {
scrollPolicyBox.setSelectedIndex(2);
}
}
}