/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tm.te.ui.terminals.types;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.eclipse.tm.te.runtime.extensions.AbstractExtensionPointManager;
import org.eclipse.tm.te.runtime.extensions.ExecutableExtensionProxy;
import org.eclipse.tm.te.ui.terminals.interfaces.IConnectorType;
/**
* Terminal connector type extension point manager implementation.
*/
public class ConnectorManager extends AbstractExtensionPointManager<IConnectorType> {
/*
* Thread save singleton instance creation.
*/
private static class LazyInstanceHolder {
public static ConnectorManager instance = new ConnectorManager();
}
/**
* Returns the singleton instance for the terminal connector type extension point manager.
*/
public static ConnectorManager getInstance() {
return LazyInstanceHolder.instance;
}
/**
* Constructor.
*/
ConnectorManager() {
super();
}
/* (non-Javadoc)
* @see org.eclipse.tm.te.runtime.extensions.AbstractExtensionPointManager#getExtensionPointId()
*/
@Override
protected String getExtensionPointId() {
return "org.eclipse.tm.te.ui.terminals.connectorTypes"; //$NON-NLS-1$
}
/* (non-Javadoc)
* @see org.eclipse.tm.te.runtime.extensions.AbstractExtensionPointManager#getConfigurationElementName()
*/
@Override
protected String getConfigurationElementName() {
return "connectorType"; //$NON-NLS-1$
}
/**
* Returns the list of all contributed terminal connector types.
*
* @param unique If <code>true</code>, the method returns new instances for each
* contributed terminal connector type.
*
* @return The list of contributed terminal connector types, or an empty array.
*/
public IConnectorType[] getConnectorTypes(boolean unique) {
List<IConnectorType> contributions = new ArrayList<IConnectorType>();
Collection<ExecutableExtensionProxy<IConnectorType>> connectorTypes = getExtensions().values();
for (ExecutableExtensionProxy<IConnectorType> connectorType : connectorTypes) {
IConnectorType instance = unique ? connectorType.newInstance() : connectorType.getInstance();
if (instance != null && !contributions.contains(instance)) {
contributions.add(instance);
}
}
return contributions.toArray(new IConnectorType[contributions.size()]);
}
/**
* Returns the terminal connector type identified by its unique id. If no terminal
* connector type with the specified id is registered, <code>null</code> is returned.
*
* @param id The unique id of the terminal connector type or <code>null</code>
* @param unique If <code>true</code>, the method returns new instances of the terminal connector type contribution.
*
* @return The terminal connector type instance or <code>null</code>.
*/
public IConnectorType getConnectorType(String id, boolean unique) {
IConnectorType contribution = null;
if (getExtensions().containsKey(id)) {
ExecutableExtensionProxy<IConnectorType> proxy = getExtensions().get(id);
// Get the extension instance
contribution = unique ? proxy.newInstance() : proxy.getInstance();
}
return contribution;
}
}