| /******************************************************************************* |
| * 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.list; |
| |
| /** |
| * A single addition of an element to a list or removal of an element from a list. |
| * |
| * @since 1.0 |
| */ |
| public abstract class ListDiffEntry { |
| |
| /** |
| * @return the 0-based position of the addition or removal |
| */ |
| public abstract int getPosition(); |
| |
| /** |
| * @return true if this represents an addition, false if this represents a removal |
| */ |
| public abstract boolean isAddition(); |
| |
| /** |
| * @return the element that was added or removed |
| */ |
| public abstract Object getElement(); |
| |
| /** |
| * @see java.lang.Object#toString() |
| */ |
| public String toString() { |
| StringBuffer buffer = new StringBuffer(); |
| buffer |
| .append(this.getClass().getName()) |
| .append("{position [") //$NON-NLS-1$ |
| .append(getPosition()) |
| .append("], isAddition [") //$NON-NLS-1$ |
| .append(isAddition()) |
| .append("], element [") //$NON-NLS-1$ |
| .append(getElement() != null ? getElement().toString() : "null") //$NON-NLS-1$ |
| .append("]}"); //$NON-NLS-1$ |
| |
| return buffer.toString(); |
| } |
| } |