package appeng.me.storage;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;
import appeng.api.networking.security.BaseActionSource;
import appeng.api.networking.storage.IBaseMonitor;
import appeng.api.storage.IMEInventory;
import appeng.api.storage.IMEMonitor;
import appeng.api.storage.IMEMonitorHandlerReceiver;
import appeng.api.storage.StorageChannel;
import appeng.api.storage.data.IAEStack;
import appeng.api.storage.data.IItemList;
import appeng.util.Platform;
import appeng.util.inv.ItemListIgnoreCrafting;
public class MEMonitorPassThrough<T extends IAEStack<T>> extends MEPassThrough<T> implements IMEMonitor<T>, IMEMonitorHandlerReceiver<T>
{
final HashMap<IMEMonitorHandlerReceiver<T>, Object> listeners = new HashMap<IMEMonitorHandlerReceiver<T>, Object>();
IMEMonitor<T> monitor;
public BaseActionSource changeSource;
public MEMonitorPassThrough(IMEInventory<T> i, StorageChannel channel) {
super( i, channel );
if ( i instanceof IMEMonitor )
monitor = (IMEMonitor<T>) i;
}
@Override
public void setInternal(IMEInventory<T> i)
{
if ( monitor != null )
monitor.removeListener( this );
monitor = null;
IItemList<T> before = getInternal() == null ? channel.createList() : getInternal()
.getAvailableItems( new ItemListIgnoreCrafting( channel.createList() ) );
super.setInternal( i );
if ( i instanceof IMEMonitor )
monitor = (IMEMonitor<T>) i;
IItemList<T> after = getInternal() == null ? channel.createList() : getInternal()
.getAvailableItems( new ItemListIgnoreCrafting( channel.createList() ) );
if ( monitor != null )
monitor.addListener( this, monitor );
Platform.postListChanges( before, after, this, changeSource );
}
@Override
public IItemList<T> getAvailableItems(IItemList out)
{
super.getAvailableItems( new ItemListIgnoreCrafting( out ) );
return out;
}
@Override
public void addListener(IMEMonitorHandlerReceiver<T> l, Object verificationToken)
{
listeners.put( l, verificationToken );
}
@Override
public void removeListener(IMEMonitorHandlerReceiver<T> l)
{
listeners.remove( l );
}
@Override
public IItemList<T> getStorageList()
{
if ( monitor == null )
{
IItemList<T> out = channel.createList();
getInternal().getAvailableItems( new ItemListIgnoreCrafting( out ) );
return out;
}
return monitor.getStorageList();
}
@Override
public boolean isValid(Object verificationToken)
{
return verificationToken == monitor;
}
@Override
public void postChange(IBaseMonitor<T> monitor, Iterable<T> change, BaseActionSource source)
{
Iterator<Entry<IMEMonitorHandlerReceiver<T>, Object>> i = listeners.entrySet().iterator();
while (i.hasNext())
{
Entry<IMEMonitorHandlerReceiver<T>, Object> e = i.next();
IMEMonitorHandlerReceiver<T> receiver = e.getKey();
if ( receiver.isValid( e.getValue() ) )
receiver.postChange( this, change, source );
else
i.remove();
}
}
@Override
public void onListUpdate()
{
Iterator<Entry<IMEMonitorHandlerReceiver<T>, Object>> i = listeners.entrySet().iterator();
while (i.hasNext())
{
Entry<IMEMonitorHandlerReceiver<T>, Object> e = i.next();
IMEMonitorHandlerReceiver<T> receiver = e.getKey();
if ( receiver.isValid( e.getValue() ) )
receiver.onListUpdate();
else
i.remove();
}
}
}