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/*
* Copyright (C) 2011 Steven Luo
*
* 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 jackpal.androidterm.util;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Collection;
import jackpal.androidterm.emulatorview.TermSession;
import jackpal.androidterm.emulatorview.UpdateCallback;
/**
* An ArrayList of TermSessions which allows users to register callbacks in
* order to be notified when the list is changed.
*/
@SuppressWarnings("serial")
public class SessionList extends ArrayList<TermSession>
{
LinkedList<UpdateCallback> callbacks = new LinkedList<UpdateCallback>();
LinkedList<UpdateCallback> titleChangedListeners = new LinkedList<UpdateCallback>();
UpdateCallback mTitleChangedListener = new UpdateCallback() {
public void onUpdate() {
notifyTitleChanged();
}
};
public SessionList() {
super();
}
public SessionList(int capacity) {
super(capacity);
}
public void addCallback(UpdateCallback callback) {
callbacks.add(callback);
}
public boolean removeCallback(UpdateCallback callback) {
return callbacks.remove(callback);
}
private void notifyChange() {
for (UpdateCallback callback : callbacks) {
callback.onUpdate();
}
}
public void addTitleChangedListener(UpdateCallback listener) {
titleChangedListeners.add(listener);
}
public boolean removeTitleChangedListener(UpdateCallback listener) {
return titleChangedListeners.remove(listener);
}
private void notifyTitleChanged() {
for (UpdateCallback listener : titleChangedListeners) {
listener.onUpdate();
}
}
@Override
public boolean add(TermSession object) {
boolean result = super.add(object);
object.setTitleChangedListener(mTitleChangedListener);
notifyChange();
return result;
}
@Override
public void add(int index, TermSession object) {
super.add(index, object);
object.setTitleChangedListener(mTitleChangedListener);
notifyChange();
}
@Override
public boolean addAll(Collection <? extends TermSession> collection) {
boolean result = super.addAll(collection);
for (TermSession session : collection) {
session.setTitleChangedListener(mTitleChangedListener);
}
notifyChange();
return result;
}
@Override
public boolean addAll(int index, Collection <? extends TermSession> collection) {
boolean result = super.addAll(index, collection);
for (TermSession session : collection) {
session.setTitleChangedListener(mTitleChangedListener);
}
notifyChange();
return result;
}
@Override
public void clear() {
for (TermSession session : this) {
session.setTitleChangedListener(null);
}
super.clear();
notifyChange();
}
@Override
public TermSession remove(int index) {
TermSession object = super.remove(index);
if (object != null) {
object.setTitleChangedListener(null);
notifyChange();
}
return object;
}
@Override
public boolean remove(Object object) {
boolean result = super.remove(object);
if (result && object instanceof TermSession) {
((TermSession) object).setTitleChangedListener(null);
notifyChange();
}
return result;
}
@Override
public TermSession set(int index, TermSession object) {
TermSession old = super.set(index, object);
object.setTitleChangedListener(mTitleChangedListener);
if (old != null) {
old.setTitleChangedListener(null);
}
notifyChange();
return old;
}
}
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