| /******************************************************************************* |
| * Copyright (c) 2004, 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 |
| *******************************************************************************/ |
| package org.eclipse.wst.css.ui.views.contentoutline; |
| |
| import java.util.ArrayList; |
| |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSDocument; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSModel; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSNode; |
| 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.w3c.dom.css.CSSRule; |
| |
| /** |
| * A Content provider for a JFace viewer used to display CSS nodes. This |
| * content provider does not use adapters. |
| */ |
| class JFaceNodeContentProviderCSS implements ITreeContentProvider { |
| |
| public JFaceNodeContentProviderCSS() { |
| super(); |
| } |
| |
| /** |
| * @deprecated |
| */ |
| protected void addElements(Object element, ArrayList v) { |
| |
| ICSSNode node; |
| |
| if (element instanceof ICSSModel) { |
| ICSSModel model = (ICSSModel) element; |
| ICSSDocument doc = model.getDocument(); |
| node = doc.getFirstChild(); |
| } |
| else if (element instanceof ICSSNode) { |
| node = ((ICSSNode) element).getFirstChild(); |
| } |
| else |
| return; |
| |
| while (node != null) { |
| if (node instanceof CSSRule) { |
| v.add(node); |
| } |
| |
| node = node.getNextSibling(); |
| } |
| |
| } |
| |
| /** |
| * The visual part that is using this content provider is about to be |
| * disposed. Deallocate all allocated SWT resources. |
| */ |
| public void dispose() { |
| } |
| |
| /** |
| * Returns an enumeration containing all child nodes of the given element, |
| * which represents a node in a tree. The difference to |
| * <code>IStructuredContentProvider.getElements(Object)</code> is as |
| * follows: <code>getElements</code> is called to obtain the tree |
| * viewer's root elements. Method <code>getChildren</code> is used to |
| * obtain the children of a given node in the tree, which can can be a |
| * root node, too. |
| */ |
| public Object[] getChildren(Object object) { |
| IJFaceNodeAdapter adapter = getAdapter(object); |
| if (adapter != null) |
| return adapter.getChildren(object); |
| |
| return new Object[0]; |
| } |
| |
| /** |
| * Returns an enumeration with the elements belonging to the passed |
| * element. These elements can be presented as rows in a table, items in a |
| * list etc. |
| */ |
| public Object[] getElements(Object object) { |
| IJFaceNodeAdapter adapter = getAdapter(object); |
| if (adapter != null) |
| return adapter.getElements(object); |
| |
| return new Object[0]; |
| } |
| |
| /** |
| * Returns the parent for the given element. This method can return |
| * <code>null</code> indicating that the parent can't be computed. In |
| * this case the tree viewer can't expand a given node correctly if |
| * requested. |
| */ |
| public Object getParent(Object object) { |
| IJFaceNodeAdapter adapter = getAdapter(object); |
| if (adapter != null) |
| return adapter.getParent(object); |
| |
| return null; |
| } |
| |
| /** |
| * Returns <code>true</code> if the given element has children. |
| * Otherwise <code>false</code> is returned. |
| */ |
| public boolean hasChildren(Object object) { |
| IJFaceNodeAdapter adapter = getAdapter(object); |
| if (adapter != null) |
| return adapter.hasChildren(object); |
| |
| return false; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, |
| * java.lang.Object, java.lang.Object) |
| */ |
| 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); |
| } |
| } |
| } |
| |
| /** |
| * Checks whether the given element is deleted or not. |
| * |
| * @deprecated |
| */ |
| public boolean isDeleted(Object element) { |
| return false; |
| } |
| |
| /** |
| * Returns the JFace adapter for the specified object. |
| * |
| * @param adaptable |
| * java.lang.Object The object to get the adapter for |
| */ |
| private IJFaceNodeAdapter getAdapter(Object adaptable) { |
| IJFaceNodeAdapter adapter = null; |
| if (adaptable instanceof ICSSModel) { |
| adaptable = ((ICSSModel) adaptable).getDocument(); |
| } |
| if (adaptable instanceof ICSSNode && adaptable instanceof INodeNotifier) { |
| INodeAdapter nodeAdapter = ((INodeNotifier) adaptable).getAdapterFor(IJFaceNodeAdapter.class); |
| if (nodeAdapter instanceof IJFaceNodeAdapter) |
| adapter = (IJFaceNodeAdapter) nodeAdapter; |
| } |
| return adapter; |
| } |
| } |