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1 /*******************************************************************************
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2 * Copyright (c) 2000, 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 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.jface.viewers.IContentProvider;
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14
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15 import dwtx.jface.viewers.Viewer;
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16
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17 /**
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18 * A content provider mediates between the viewer's model
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19 * and the viewer itself.
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20 *
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21 * @see dwtx.jface.viewers.ContentViewer#setContentProvider(IContentProvider)
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22 */
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23 public interface IContentProvider {
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24 /**
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25 * Disposes of this content provider.
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26 * This is called by the viewer when it is disposed.
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27 * <p>
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28 * The viewer should not be updated during this call, as it is in the process
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29 * of being disposed.
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30 * </p>
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31 */
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32 public void dispose();
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33
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34 /**
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35 * Notifies this content provider that the given viewer's input
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36 * has been switched to a different element.
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37 * <p>
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38 * A typical use for this method is registering the content provider as a listener
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39 * to changes on the new input (using model-specific means), and deregistering the viewer
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40 * from the old input. In response to these change notifications, the content provider
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41 * should update the viewer (see the add, remove, update and refresh methods on the viewers).
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42 * </p>
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43 * <p>
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44 * The viewer should not be updated during this call, as it might be in the process
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45 * of being disposed.
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46 * </p>
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47 *
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48 * @param viewer the viewer
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49 * @param oldInput the old input element, or <code>null</code> if the viewer
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50 * did not previously have an input
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51 * @param newInput the new input element, or <code>null</code> if the viewer
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52 * does not have an input
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53 */
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54 public void inputChanged(Viewer viewer, Object oldInput, Object newInput);
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55 }
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