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/**
* Copyright 2012 Kjetil Ørbekk <kjetil.orbekk@gmail.com>
*
* 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 com.orbekk.same;
import com.orbekk.util.DelayedOperation;
public interface Variable<T> {
public interface OnChangeListener<T> {
/**
* A notification that 'variable' has been changed.
*
* The user must run variable.update() to get the updated value.
*/
void valueChanged(Variable<T> variable);
}
T get();
DelayedOperation set(T value);
void update();
void addOnChangeListener(OnChangeListener<T> listener);
void removeOnChangeListener(OnChangeListener<T> listener);
}
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