/*
* Copyright 2003-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.mps.openapi.model;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.event.SNodeAddEvent;
import org.jetbrains.mps.openapi.event.SNodeRemoveEvent;
import org.jetbrains.mps.openapi.event.SPropertyChangeEvent;
import org.jetbrains.mps.openapi.event.SReferenceChangeEvent;
/**
* Listener to track changes to individual nodes in a model.
* <p/>
* Change listeners get notified regardless of model being attached to a repository.
* If, however, model is attached to a repository, all notifications are delivered inside a write lock on the repository <em>after</em> a real change.
*
* @see SNodeChangeListenerAdapter
* @see org.jetbrains.mps.openapi.model.SModel#addChangeListener(SNodeChangeListener)
* @since 3.3
* @author Artem Tikhomirov
*/
public interface SNodeChangeListener {
void propertyChanged(@NotNull SPropertyChangeEvent event);
void referenceChanged(@NotNull SReferenceChangeEvent event);
void nodeAdded(@NotNull SNodeAddEvent event);
void nodeRemoved(@NotNull SNodeRemoveEvent event);
}