Applied-Energistics-2-tiler.../src/main/java/appeng/me/storage/ItemWatcher.java
yueh fb79fd284d Replaced Watcher using Collection with a more fitting interface (#2693)
Replaced the watchers for energy, storage and crafting with a more fitting interface compared to a common collection.

Fixes #229
2016-12-14 18:30:49 +01:00

82 lines
2.2 KiB
Java

/*
* This file is part of Applied Energistics 2.
* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
*
* Applied Energistics 2 is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Applied Energistics 2 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
*/
package appeng.me.storage;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import appeng.api.networking.storage.IStackWatcher;
import appeng.api.networking.storage.IStackWatcherHost;
import appeng.api.storage.data.IAEStack;
import appeng.me.cache.GridStorageCache;
/**
* Maintain my interests, and a global watch list, they should always be fully synchronized.
*/
public class ItemWatcher implements IStackWatcher
{
private final GridStorageCache gsc;
private final IStackWatcherHost myObject;
private final Set<IAEStack> myInterests = new HashSet<IAEStack>();
public ItemWatcher( final GridStorageCache cache, final IStackWatcherHost host )
{
this.gsc = cache;
this.myObject = host;
}
public IStackWatcherHost getHost()
{
return this.myObject;
}
@Override
public boolean add( final IAEStack e )
{
if( this.myInterests.contains( e ) )
{
return false;
}
return this.myInterests.add( e.copy() ) && this.gsc.getInterestManager().put( e, this );
}
@Override
public boolean remove( final IAEStack o )
{
return this.myInterests.remove( o ) && this.gsc.getInterestManager().remove( (IAEStack) o, this );
}
@Override
public void reset()
{
final Iterator<IAEStack> i = this.myInterests.iterator();
while( i.hasNext() )
{
this.gsc.getInterestManager().remove( i.next(), this );
i.remove();
}
}
}