1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.browsing.ui.common.viewpoints;
14 import org.simantics.browsing.ui.NodeContext;
15 import org.simantics.browsing.ui.PrimitiveQueryUpdater;
16 import org.simantics.browsing.ui.content.Viewpoint;
18 public class LazyContainerViewpoint implements Viewpoint {
20 private NodeContext[] children = Viewpoint.PENDING_CHILDREN;
21 private Boolean hasChildren = Viewpoint.PENDING_HAS_CHILDREN;
23 public LazyContainerViewpoint() {
26 public LazyContainerViewpoint(NodeContext[] children) {
27 this.children = children;
28 this.hasChildren = children.length > 0;
31 public void setChildren(PrimitiveQueryUpdater updater, NodeContext[] children) {
32 for(NodeContext c : children) updater.incRef(c);
33 for(NodeContext c : this.children) updater.decRef(c);
34 this.children = children;
37 public void setHasChildren(Boolean hasChildren) {
38 this.hasChildren = hasChildren;
42 public NodeContext[] getChildren() {
47 public Boolean getHasChildren() {