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/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.compare.structuremergeviewer;
/**
* Listener that gets informed if one (or more)
* of the three sides of an <code>ICompareInput</code> object changes its value.
* <p>
* For example when accepting an incoming addition
* the (non-null) left side of an <code>ICompareInput</code>
* is copied to the right side (which was <code>null</code>).
* This triggers a call to <code>compareInputChanged</code> of registered
* <code>ICompareInputChangeListener</code>.
* <p>
* Note however, that listener are not informed if the content of one of the sides changes.
* <p>
* Clients may implement this interface. It is also implemented by viewers that take
* an <code>ICompareInput</code> as input.
* </p>
*/
public interface ICompareInputChangeListener {
/**
* Called whenever the value (not the content) of one or more of the three sides
* of a <code>ICompareInput</code> has changed.
*
* @param source the <code>ICompareInput</code> that has changed
*/
void compareInputChanged(ICompareInput source);
}
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