/**
* 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.waveprotocol.wave.client.wavepanel.view.dom;
import com.google.gwt.dom.client.Element;
import org.waveprotocol.wave.client.wavepanel.view.IntrinsicParticipantsView;
import org.waveprotocol.wave.client.wavepanel.view.dom.full.ParticipantsViewBuilder.Components;
/**
* The DOM implementation of a participant collection.
*
*/
public final class ParticipantsDomImpl implements DomView, IntrinsicParticipantsView {
/** The element to which this view is bound. */
private final Element self;
/** The HTML id of {@code self}. */
private final String id;
private Element participantContainer;
private Element simple;
ParticipantsDomImpl(Element self, String id) {
this.self = self;
this.id = id;
}
public static ParticipantsDomImpl of(Element e) {
return new ParticipantsDomImpl(e, e.getId());
}
@Override
public Element getElement() {
return self;
}
@Override
public String getId() {
return id;
}
//
// Structure.
//
Element getParticipantContainer() {
if (participantContainer == null) {
participantContainer = DomViewHelper.load(id, Components.CONTAINER);
}
return participantContainer;
}
Element getSimpleMenu() {
// The two menu elements are always in the participant container, and should
// always be at the end.
if (simple == null) {
simple = getParticipantContainer().getLastChild().getPreviousSibling().cast();
}
return simple;
}
void remove() {
self.removeFromParent();
}
}