/******************************************************************************* * Copyright (c) 2007, 2010 Association for Decentralized Information Management * in Industry THTH ry. * 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: * VTT Technical Research Centre of Finland - initial API and implementation *******************************************************************************/ package org.simantics.browsing.ui.common.viewpoints; import java.util.Collection; import org.simantics.browsing.ui.BuiltinKeys; import org.simantics.browsing.ui.NodeContext; import org.simantics.browsing.ui.PrimitiveQueryUpdater; import org.simantics.browsing.ui.common.NodeContextBuilder; import org.simantics.browsing.ui.common.NodeContextUtil; import org.simantics.browsing.ui.content.Viewpoint; /** * @author Tuukka Lehtonen */ public abstract class ViewpointStub implements Viewpoint { protected NodeContext[] children = Viewpoint.PENDING_CHILDREN; protected Boolean hasChildren = Viewpoint.PENDING_HAS_CHILDREN; final public void setChildren(PrimitiveQueryUpdater updater, NodeContext[] children) { if (children == null) throw new NullPointerException(this + ": null children produced by " + getClass().getName()); for(NodeContext c : children) updater.incRef(c); for(NodeContext c : this.children) updater.decRef(c); this.children = children; } public void setHasChildren(Boolean hasChildren) { if (children == null) throw new NullPointerException(this + ": null hasChildren produced by " + getClass().getName()); this.hasChildren = hasChildren; } /** * A utility method for transforming an array of objects into an * INodeContext array which is the return value of a ViewpointFactory. * *
* The INodeContext's are constructed using * {@link NodeContextBuilder#buildWithInput(Object)}. *
* * @param children * @return the specified children wrapped into simpleINodeContext
s
*/
public NodeContext[] toContextsWithInput(Object... children) {
return NodeContextUtil.toContextsWithInput(children);
}
/**
* A utility method for transforming a collection of objects into an
* INodeContext array which is the return value of a ViewpointFactory.
*
* * The INodeContext's are constructed using * {@link NodeContextBuilder#buildWithInput(Object)}. *
* * @param children * @return the specified children wrapped into simpleINodeContext
s
*/
public NodeContext[] toContextsWithInput(Collection> children) {
return NodeContextUtil.toContextsWithInput(children);
}
/**
* A utility method for transforming a collection of objects into an
* INodeContext array which is the return value of a ViewpointFactory.
*
* * The INodeContext's are constructed using the specified factory. *
* * @param children * @return the specified children wrapped into INodeContext's through the * specifiedfactory
*/
public NodeContext[] toContexts(Collection> children, NodeContextUtil.NodeContextFactory factory) {
return NodeContextUtil.toContexts(children, factory);
}
/**
* @param null
if input is null
or if the class
* does not match
*/
@SuppressWarnings("unchecked")
protected