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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 module org.eclipse.core.databinding.observable.list.ListDiffEntry;
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13
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14 import java.lang.all;
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15
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16 /**
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17 * A single addition of an element to a list or removal of an element from a list.
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18 *
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19 * @since 1.0
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20 */
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21 public abstract class ListDiffEntry {
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22
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23 /**
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24 * @return the 0-based position of the addition or removal
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25 */
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26 public abstract int getPosition();
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27
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28 /**
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29 * @return true if this represents an addition, false if this represents a removal
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30 */
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31 public abstract bool isAddition();
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32
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33 /**
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34 * @return the element that was added or removed
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35 */
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36 public abstract Object getElement();
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37
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38 /**
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39 * @see java.lang.Object#toString()
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40 */
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41 public String toString() {
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42 StringBuffer buffer = new StringBuffer();
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43 buffer
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44 .append(this.getClass().getName())
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45 .append("{position [") //$NON-NLS-1$
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46 .append(getPosition())
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47 .append("], isAddition [") //$NON-NLS-1$
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48 .append(isAddition())
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49 .append("], element [") //$NON-NLS-1$
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50 .append(getElement() !is null ? getElement().toString() : "null") //$NON-NLS-1$
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51 .append("]}"); //$NON-NLS-1$
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52
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53 return buffer.toString();
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54 }
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55 }
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