/*******************************************************************************
* Copyright (c) 2008 Versant Corp.
* 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:
* Markus Kuppe (mkuppe <at> versant <dot> com) - initial API and implementation
******************************************************************************/
package org.eclipse.ecf.internal.remoteservices.ui.property;
import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.ecf.core.IContainer;
import org.eclipse.ecf.core.IContainerManager;
import org.eclipse.ecf.core.identity.ID;
import org.eclipse.ecf.core.identity.IDCreateException;
import org.eclipse.ecf.core.identity.IDFactory;
import org.eclipse.ecf.discovery.IServiceInfo;
import org.eclipse.ecf.discovery.ui.DiscoveryPropertyTesterUtil;
import org.eclipse.ecf.internal.remoteservices.ui.Activator;
import org.eclipse.ecf.remoteservice.Constants;
public class ConnectedTester extends PropertyTester {
public ConnectedTester() {
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.expressions.IPropertyTester#test(java.lang.Object,
* java.lang.String, java.lang.Object[], java.lang.Object)
*/
public boolean test(Object receiver, String property, Object[] args,
Object expectedValue) {
// consumers expect connected or disconnected
if (!(expectedValue instanceof Boolean)) {
return false;
}
boolean expected = ((Boolean) expectedValue).booleanValue();
boolean hasContainer = hasContainer(receiver);
if (expected && hasContainer) {
return true;
} else if (expected && !hasContainer) {
return false;
} else if (!expected && hasContainer) {
return false;
} else {
return true;
}
}
private boolean hasContainer(Object receiver) {
// get the container instance
IServiceInfo serviceInfo = DiscoveryPropertyTesterUtil
.getIServiceInfoReceiver(receiver);
final String connectNamespace = getConnectNamespace(serviceInfo);
final String connectId = getConnectID(serviceInfo);
try {
final ID createConnectId = IDFactory.getDefault().createID(
connectNamespace, connectId);
return (getContainerByConnectID(createConnectId) != null);
} catch (IDCreateException e) {
// Trace.trace(...);
return false;
}
}
/**
* @param connectID
* The conected ID for which an IContainer is to be returned
* @return a IContainer instance of null
*/
// TODO push this functionality down into the ContainerManager
private IContainer getContainerByConnectID(ID connectID) {
final IContainerManager containerManager = Activator.getDefault()
.getContainerManager();
final IContainer[] containers = containerManager.getAllContainers();
if (containers == null) {
return null;
}
for (int i = 0; i < containers.length; i++) {
ID connectedId = containers[i].getConnectedID();
if (connectedId != null && connectedId.equals(connectID)) {
return containers[i];
}
}
return null;
}
private String getConnectNamespace(IServiceInfo serviceInfo) {
return serviceInfo.getServiceProperties().getPropertyString(
Constants.SERVICE_CONNECT_ID_NAMESPACE);
}
private String getConnectID(IServiceInfo serviceInfo) {
return serviceInfo.getServiceProperties().getPropertyString(
Constants.SERVICE_CONNECT_ID);
}
}