94 lines
1.7 KiB
Java
94 lines
1.7 KiB
Java
package appeng.me.helpers;
|
|
|
|
import java.util.LinkedList;
|
|
import java.util.Set;
|
|
|
|
import appeng.api.storage.data.IAEStack;
|
|
|
|
import com.google.common.collect.SetMultimap;
|
|
|
|
public class GenericInterestManager<T>
|
|
{
|
|
|
|
class SavedTransactions
|
|
{
|
|
|
|
public final boolean put;
|
|
public final IAEStack stack;
|
|
public final T iw;
|
|
|
|
public SavedTransactions(boolean putOperation, IAEStack myStack, T watcher) {
|
|
put = putOperation;
|
|
stack = myStack;
|
|
iw = watcher;
|
|
}
|
|
};
|
|
|
|
private final SetMultimap<IAEStack, T> container;
|
|
private LinkedList<SavedTransactions> transactions = null;
|
|
private int transDepth = 0;
|
|
|
|
public GenericInterestManager(SetMultimap<IAEStack, T> interests) {
|
|
container = interests;
|
|
}
|
|
|
|
public void enableTransactions()
|
|
{
|
|
if ( transDepth == 0 )
|
|
transactions = new LinkedList();
|
|
|
|
transDepth++;
|
|
}
|
|
|
|
public void disableTransactions()
|
|
{
|
|
transDepth--;
|
|
|
|
if ( transDepth == 0 )
|
|
{
|
|
LinkedList<SavedTransactions> myActions = transactions;
|
|
transactions = null;
|
|
|
|
for (SavedTransactions t : myActions)
|
|
{
|
|
if ( t.put )
|
|
put( t.stack, t.iw );
|
|
else
|
|
remove( t.stack, t.iw );
|
|
}
|
|
}
|
|
}
|
|
|
|
public boolean containsKey(IAEStack stack)
|
|
{
|
|
return container.containsKey( stack );
|
|
}
|
|
|
|
public Set<T> get(IAEStack stack)
|
|
{
|
|
return container.get( stack );
|
|
}
|
|
|
|
public boolean put(IAEStack stack, T iw)
|
|
{
|
|
if ( transactions != null )
|
|
{
|
|
transactions.add( new SavedTransactions( true, stack, iw ) );
|
|
return true;
|
|
}
|
|
else
|
|
return container.put( stack, iw );
|
|
}
|
|
|
|
public boolean remove(IAEStack stack, T iw)
|
|
{
|
|
if ( transactions != null )
|
|
{
|
|
transactions.add( new SavedTransactions( true, stack, iw ) );
|
|
return true;
|
|
}
|
|
else
|
|
return container.remove( stack, iw );
|
|
}
|
|
|
|
}
|