| /******************************************************************************* |
| * Copyright (c) 2000, 2004 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.viewers; |
| |
| /** |
| * A content provider mediates between the viewer's model |
| * and the viewer itself. |
| * |
| * @see org.eclipse.jface.viewers.ContentViewer#setContentProvider(IContentProvider) |
| */ |
| public interface IContentProvider { |
| /** |
| * Disposes of this content provider. |
| * This is called by the viewer when it is disposed. |
| * <p> |
| * The viewer should not be updated during this call, as it is in the process |
| * of being disposed. |
| * </p> |
| */ |
| public void dispose(); |
| |
| /** |
| * Notifies this content provider that the given viewer's input |
| * has been switched to a different element. |
| * <p> |
| * A typical use for this method is registering the content provider as a listener |
| * to changes on the new input (using model-specific means), and deregistering the viewer |
| * from the old input. In response to these change notifications, the content provider |
| * should update the viewer (see the add, remove, update and refresh methods on the viewers). |
| * </p> |
| * <p> |
| * The viewer should not be updated during this call, as it might be in the process |
| * of being disposed. |
| * </p> |
| * |
| * @param viewer the viewer |
| * @param oldInput the old input element, or <code>null</code> if the viewer |
| * did not previously have an input |
| * @param newInput the new input element, or <code>null</code> if the viewer |
| * does not have an input |
| */ |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput); |
| } |