172 lines
3.1 KiB
Java
172 lines
3.1 KiB
Java
package appeng.me.storage;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.Iterator;
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import appeng.api.networking.storage.IStackWatcher;
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import appeng.api.networking.storage.IStackWatcherHost;
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import appeng.api.storage.data.IAEStack;
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import appeng.me.cache.GridStorageCache;
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/**
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* Maintain my interests, and a global watch list, they should always be fully synchronized.
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*/
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public class ItemWatcher implements IStackWatcher
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{
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class ItemWatcherIterator implements Iterator<IAEStack>
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{
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final ItemWatcher watcher;
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final Iterator<IAEStack> interestIterator;
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IAEStack myLast;
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public ItemWatcherIterator(ItemWatcher parent, Iterator<IAEStack> i) {
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watcher = parent;
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interestIterator = i;
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}
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@Override
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public boolean hasNext()
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{
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return interestIterator.hasNext();
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}
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@Override
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public IAEStack next()
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{
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return myLast = interestIterator.next();
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}
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@Override
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public void remove()
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{
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gsc.interestManager.remove( myLast, watcher );
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interestIterator.remove();
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}
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};
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GridStorageCache gsc;
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IStackWatcherHost myObject;
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HashSet<IAEStack> myInterests = new HashSet();
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public ItemWatcher(GridStorageCache cache, IStackWatcherHost host) {
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gsc = cache;
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myObject = host;
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}
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public IStackWatcherHost getHost()
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{
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return myObject;
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}
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@Override
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public boolean add(IAEStack e)
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{
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if ( myInterests.contains( e ) )
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return false;
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return myInterests.add( e.copy() ) && gsc.interestManager.put( e, this );
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}
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@Override
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public boolean addAll(Collection<? extends IAEStack> c)
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{
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boolean didChange = false;
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for (IAEStack o : c)
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didChange = add( o ) || didChange;
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return didChange;
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}
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@Override
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public void clear()
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{
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Iterator<IAEStack> i = myInterests.iterator();
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while (i.hasNext())
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{
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gsc.interestManager.remove( i.next(), this );
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i.remove();
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}
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}
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@Override
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public boolean contains(Object o)
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{
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return myInterests.contains( o );
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}
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@Override
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public boolean containsAll(Collection<?> c)
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{
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return myInterests.containsAll( c );
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}
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@Override
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public boolean isEmpty()
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{
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return myInterests.isEmpty();
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}
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@Override
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public Iterator<IAEStack> iterator()
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{
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return new ItemWatcherIterator( this, myInterests.iterator() );
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}
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@Override
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public boolean remove(Object o)
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{
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return myInterests.remove( o ) && gsc.interestManager.remove( (IAEStack)o, this );
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}
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@Override
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public boolean removeAll(Collection<?> c)
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{
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boolean didSomething = false;
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for (Object o : c)
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didSomething = remove( o ) || didSomething;
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return didSomething;
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}
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@Override
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public boolean retainAll(Collection<?> c)
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{
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boolean changed = false;
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Iterator<IAEStack> i = iterator();
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while (i.hasNext())
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{
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if ( !c.contains( i.next() ) )
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{
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i.remove();
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changed = true;
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}
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}
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return changed;
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}
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@Override
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public int size()
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{
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return myInterests.size();
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}
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@Override
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public Object[] toArray()
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{
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return myInterests.toArray();
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}
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@Override
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public <T> T[] toArray(T[] a)
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{
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return myInterests.toArray( a );
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}
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}
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