| /******************************************************************************* |
| * Copyright (c) 2001, 2007 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.xsd.ui.internal.adt.outline; |
| |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.wst.xsd.ui.internal.adt.facade.IADTObject; |
| import org.eclipse.wst.xsd.ui.internal.adt.facade.IADTObjectListener; |
| |
| public class ADTContentOutlineProvider implements ITreeContentProvider, IADTObjectListener |
| { |
| protected Viewer viewer = null; |
| protected Object oldInput, newInput; |
| |
| public ADTContentOutlineProvider() |
| { |
| super(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) |
| */ |
| public Object[] getChildren(Object parentElement) |
| { |
| if (parentElement instanceof ITreeElement) |
| { |
| Object[] children = ((ITreeElement) parentElement).getChildren(); |
| if (children != null) |
| { |
| int length = children.length; |
| for (int i = 0; i < length; i++) |
| { |
| Object child = children[i]; |
| if (child instanceof IADTObject) |
| { |
| ((IADTObject) child).registerListener(this); |
| } |
| } |
| } |
| return children; |
| } |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) |
| */ |
| public Object getParent(Object element) |
| { |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) |
| */ |
| public boolean hasChildren(Object element) |
| { |
| if (element instanceof ITreeElement) |
| { |
| return ((ITreeElement) element).hasChildren(); |
| } |
| return false; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) |
| */ |
| public Object[] getElements(Object inputElement) |
| { |
| return getChildren(inputElement); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IContentProvider#dispose() |
| */ |
| public void dispose() |
| { |
| Object input = viewer.getInput(); |
| if (input instanceof IADTObject) |
| { |
| removeListener((IADTObject) input); |
| } |
| } |
| |
| /* (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) |
| { |
| this.viewer = viewer; |
| this.oldInput = oldInput; |
| this.newInput = newInput; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.wst.xsd.ui.internal.adt.facade.IADTObjectListener#propertyChanged(java.lang.Object, java.lang.String) |
| */ |
| public void propertyChanged(Object object, String property) |
| { |
| if (viewer instanceof TreeViewer) |
| { |
| TreeViewer treeViewer = (TreeViewer) viewer; |
| if (treeViewer.getTree() != null && !treeViewer.getTree().isDisposed()) |
| { |
| treeViewer.refresh(object); |
| treeViewer.reveal(object); |
| } |
| } |
| } |
| |
| /** |
| * @param model |
| */ |
| private void removeListener(IADTObject model) |
| { |
| model.unregisterListener(this); |
| Object[] children = getChildren(model); |
| if (children != null) |
| { |
| int length = children.length; |
| for (int i = 0; i < length; i++) |
| { |
| Object child = children[i]; |
| if (child instanceof IADTObject) |
| { |
| removeListener((IADTObject) child); |
| } |
| } |
| } |
| } |
| |
| } |