blob: 5fd15a1a73717adeb6cbc57a6c72100668f5d3a3 [file] [log] [blame]
/*******************************************************************************
* Copyright (c) 2006 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.jface.internal.databinding.provisional.observable.value;
import org.eclipse.jface.internal.databinding.provisional.observable.Diffs;
import org.eclipse.jface.internal.databinding.provisional.observable.IDiff;
/**
* @since 1.0
*
*/
public abstract class ValueDiff implements IDiff {
/**
* Creates a value diff.
*/
public ValueDiff() {
}
/**
* @return the old value
*/
public abstract Object getOldValue();
/**
* @return the new value
*/
public abstract Object getNewValue();
public boolean equals(Object obj) {
if (obj instanceof ValueDiff) {
ValueDiff val = (ValueDiff) obj;
return Diffs.equals(val.getNewValue(), getNewValue())
&& Diffs.equals(val.getOldValue(), getOldValue());
}
return false;
}
/**
* @see java.lang.Object#toString()
*/
public String toString() {
StringBuffer buffer = new StringBuffer();
buffer
.append(getClass().getName())
.append("{oldValue [") //$NON-NLS-1$
.append(getOldValue() != null ? getOldValue().toString() : "null") //$NON-NLS-1$
.append("], newValue [") //$NON-NLS-1$
.append(getNewValue() != null ? getNewValue().toString() : "null") //$NON-NLS-1$
.append("]}"); //$NON-NLS-1$
return buffer.toString();
}
}