/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you 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 org.apache.pivot.tutorials.navigation;
import java.net.URL;
import org.apache.pivot.beans.Bindable;
import org.apache.pivot.collections.Map;
import org.apache.pivot.collections.Sequence;
import org.apache.pivot.util.Resources;
import org.apache.pivot.util.Vote;
import org.apache.pivot.wtk.Accordion;
import org.apache.pivot.wtk.AccordionSelectionListener;
import org.apache.pivot.wtk.Component;
import org.apache.pivot.wtk.Window;
public class Accordions extends Window implements Bindable {
private Accordion accordion = null;
@Override
public void initialize(Map<String, Object> namespace, URL location, Resources resources) {
accordion = (Accordion)namespace.get("accordion");
accordion.getAccordionSelectionListeners().add(new AccordionSelectionListener() {
private int selectedIndex = -1;
@Override
public Vote previewSelectedIndexChange(Accordion accordion, int selectedIndex) {
this.selectedIndex = selectedIndex;
// Enable the next panel or disable the previous panel so the
// transition looks smoother
if (selectedIndex != -1) {
int previousSelectedIndex = accordion.getSelectedIndex();
if (selectedIndex > previousSelectedIndex) {
accordion.getPanels().get(selectedIndex).setEnabled(true);
} else {
accordion.getPanels().get(previousSelectedIndex).setEnabled(false);
}
}
return Vote.APPROVE;
}
@Override
public void selectedIndexChangeVetoed(Accordion accordion, Vote reason) {
if (reason == Vote.DENY
&& selectedIndex != -1) {
Component panel = accordion.getPanels().get(selectedIndex);
panel.setEnabled(!panel.isEnabled());
}
}
@Override
public void selectedIndexChanged(Accordion accordion, int previousSelection) {
updateAccordion();
}
});
updateAccordion();
}
private void updateAccordion() {
int selectedIndex = accordion.getSelectedIndex();
Sequence<Component> panels = accordion.getPanels();
for (int i = 0, n = panels.getLength(); i < n; i++) {
panels.get(i).setEnabled(i <= selectedIndex);
}
}
}