| package org.eclipse.jst.jsf.ui.internal.component; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jface.viewers.IStructuredContentProvider; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jst.jsf.common.runtime.internal.model.component.ComponentInfo; |
| |
| /** |
| * A tree view adapter for a design time component tree rooted at a design time |
| * view root. |
| * |
| * @author cbateman |
| * |
| */ |
| public class ComponentTreeViewProvider implements IStructuredContentProvider, |
| ITreeContentProvider |
| { |
| private final static Object[] NO_CHILDREN = new Object[0]; |
| |
| public Object[] getElements(Object inputElement) |
| { |
| if (inputElement instanceof DTJSFViewModel) |
| { |
| return new Object[] {((DTJSFViewModel)inputElement).getRoot()}; |
| } |
| return NO_CHILDREN; |
| } |
| |
| public void dispose() |
| { |
| // nothing to dispose |
| } |
| |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) |
| { |
| // do nothing |
| } |
| |
| public Object[] getChildren(Object parentElement) |
| { |
| if (parentElement instanceof ComponentInfo) |
| { |
| List<Object> children = new ArrayList<Object>(); |
| children.addAll(((ComponentInfo)parentElement).getChildren()); |
| children.addAll(((ComponentInfo)parentElement).getAllDecorators()); |
| return children.toArray(); |
| } |
| return NO_CHILDREN; |
| } |
| |
| public Object getParent(Object element) |
| { |
| // no parent |
| return null; |
| } |
| |
| public boolean hasChildren(Object element) |
| { |
| return getChildren(element).length > 0; |
| } |
| } |