| /******************************************************************************* |
| * Copyright (c) 2001, 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 |
| * Jens Lukowski/Innoopract - initial renaming/restructuring |
| * |
| *******************************************************************************/ |
| package org.eclipse.wst.xml.ui.internal.contentoutline; |
| |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeAdapter; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier; |
| import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel; |
| import org.eclipse.wst.sse.ui.internal.contentoutline.IJFaceNodeAdapter; |
| import org.eclipse.wst.sse.ui.internal.contentoutline.IJFaceNodeAdapterFactory; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel; |
| |
| |
| /** |
| * An ITreeContentProvider for a TreeViewers used to display DOM nodes. This |
| * content provider takes an adapter factory to create JFace adapters for the |
| * nodes in the tree. |
| */ |
| public class JFaceNodeContentProvider implements ITreeContentProvider { |
| |
| public JFaceNodeContentProvider() { |
| super(); |
| } |
| |
| /** |
| * The visual part that is using this content provider is about to be |
| * disposed. Deallocate all allocated SWT resources. |
| */ |
| public void dispose() { |
| } |
| |
| /** |
| * Returns the JFace adapter for the specified object. |
| * |
| * @param adaptable |
| * java.lang.Object The object to get the adapter for |
| */ |
| protected IJFaceNodeAdapter getAdapter(Object adaptable) { |
| if (adaptable instanceof INodeNotifier) { |
| INodeAdapter adapter = ((INodeNotifier) adaptable).getAdapterFor(IJFaceNodeAdapter.class); |
| if (adapter instanceof IJFaceNodeAdapter) { |
| return (IJFaceNodeAdapter) adapter; |
| } |
| } |
| return null; |
| } |
| |
| public Object[] getChildren(Object object) { |
| IJFaceNodeAdapter adapter = getAdapter(object); |
| |
| if (adapter != null) { |
| return adapter.getChildren(object); |
| } |
| |
| return new Object[0]; |
| } |
| |
| public Object[] getElements(Object object) { |
| // The root is usually an instance of an XMLStructuredModel in |
| // which case we want to extract the document. |
| Object topNode = object; |
| if (object instanceof IDOMModel) { |
| topNode = ((IDOMModel) object).getDocument(); |
| } |
| |
| IJFaceNodeAdapter adapter = getAdapter(topNode); |
| |
| if (adapter != null) { |
| return adapter.getElements(topNode); |
| } |
| |
| return new Object[0]; |
| } |
| |
| public Object getParent(Object object) { |
| IJFaceNodeAdapter adapter = getAdapter(object); |
| |
| if (adapter != null) { |
| return adapter.getParent(object); |
| } |
| |
| return null; |
| } |
| |
| public boolean hasChildren(Object object) { |
| IJFaceNodeAdapter adapter = getAdapter(object); |
| |
| if (adapter != null) { |
| return adapter.hasChildren(object); |
| } |
| |
| return false; |
| } |
| |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| if ((oldInput != null) && (oldInput instanceof IStructuredModel)) { |
| IJFaceNodeAdapterFactory factory = (IJFaceNodeAdapterFactory) ((IStructuredModel) oldInput).getFactoryRegistry().getFactoryFor(IJFaceNodeAdapter.class); |
| if (factory != null) { |
| factory.removeListener(viewer); |
| } |
| } |
| if ((newInput != null) && (newInput instanceof IStructuredModel)) { |
| IJFaceNodeAdapterFactory factory = (IJFaceNodeAdapterFactory) ((IStructuredModel) newInput).getFactoryRegistry().getFactoryFor(IJFaceNodeAdapter.class); |
| if (factory != null) { |
| factory.addListener(viewer); |
| } |
| } |
| } |
| } |