IHintRepository.java

package org.archstudio.bna.logics.hints;

import java.io.Serializable;
import java.util.Map;

import org.archstudio.bna.IBNAWorld;
import org.archstudio.bna.IThing;
import org.eclipse.jdt.annotation.Nullable;

public interface IHintRepository {

	public static interface HintValue {
		public boolean isPresent();

		public @Nullable
		Object getValue();
	}

	public @Nullable
	Object getContextForThing(IBNAWorld world, IThing thing);

	public boolean storeHint(Object context, String name, @Nullable Serializable value);

	public boolean removeHint(Object context, String name);

	public HintValue getHint(Object context, String name) throws PropertyDecodeException;

	public Map<String, HintValue> getHints(Object context) throws PropertyDecodeException;

	public void addHintRepositoryChangeListener(IHintRepositoryChangeListener l);

	public void removeHintRepositoryChangeListener(IHintRepositoryChangeListener l);
}