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annotate org.eclipse.core.databinding.observable/src/org/eclipse/core/databinding/observable/list/ListDiffEntry.d @ 95:6208d4f6a277

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Added trees for databinding.beans and observable
author Frank Benoit <benoit@tionex.de>
date Tue, 21 Apr 2009 10:55:51 +0200
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children b74ac5dfcc06
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6208d4f6a277 Added trees for databinding.beans and observable
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1 /*******************************************************************************
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2 * Copyright (c) 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 ******************************************************************************/
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11
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12 package org.eclipse.core.databinding.observable.list;
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13
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14 /**
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15 * A single addition of an element to a list or removal of an element from a list.
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16 *
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17 * @since 1.0
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18 */
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19 public abstract class ListDiffEntry {
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20
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21 /**
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22 * @return the 0-based position of the addition or removal
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23 */
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24 public abstract int getPosition();
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25
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26 /**
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27 * @return true if this represents an addition, false if this represents a removal
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28 */
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29 public abstract bool isAddition();
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30
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31 /**
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32 * @return the element that was added or removed
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33 */
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34 public abstract Object getElement();
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35
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36 /**
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37 * @see java.lang.Object#toString()
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38 */
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39 public String toString() {
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40 StringBuffer buffer = new StringBuffer();
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41 buffer
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42 .append(this.getClass().getName())
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43 .append("{position [") //$NON-NLS-1$
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44 .append(getPosition())
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45 .append("], isAddition [") //$NON-NLS-1$
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46 .append(isAddition())
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47 .append("], element [") //$NON-NLS-1$
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48 .append(getElement() !is null ? getElement().toString() : "null") //$NON-NLS-1$
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49 .append("]}"); //$NON-NLS-1$
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50
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51 return buffer.toString();
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52 }
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53 }