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/*******************************************************************************
* 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.tcf.te.runtime.stepper.extensions.manager;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.eclipse.core.runtime.Assert;
import org.eclipse.tcf.te.runtime.extensions.AbstractExtensionPointManager;
import org.eclipse.tcf.te.runtime.extensions.ExecutableExtensionProxy;
import org.eclipse.tcf.te.runtime.stepper.interfaces.IStepper;
/**
* Stepper extension point manager implementation.
*/
public final class StepperExtensionPointManager extends AbstractExtensionPointManager<IStepper> {
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.extensions.AbstractExtensionPointManager#getExtensionPointId()
*/
@Override
protected String getExtensionPointId() {
return "org.eclipse.tcf.te.runtime.stepper.steppers"; //$NON-NLS-1$
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.extensions.AbstractExtensionPointManager#getConfigurationElementName()
*/
@Override
protected String getConfigurationElementName() {
return "stepper"; //$NON-NLS-1$
}
/**
* Returns the list of all contributed stepper.
*
* @param unique If <code>true</code>, the method returns new instances for each
* contributed stepper.
*
* @return The list of contributed stepper, or an empty array.
*/
public IStepper[] getStepper(boolean unique) {
List<IStepper> contributions = new ArrayList<IStepper>();
Collection<ExecutableExtensionProxy<IStepper>> delegates = getExtensions().values();
for (ExecutableExtensionProxy<IStepper> delegate : delegates) {
IStepper instance = unique ? delegate.newInstance() : delegate.getInstance();
if (instance != null && !contributions.contains(instance)) {
contributions.add(instance);
}
}
return contributions.toArray(new IStepper[contributions.size()]);
}
/**
* Returns the stepper identified by its unique id. If no stepper with the specified id is registered,
* <code>null</code> is returned.
*
* @param id The unique id of the stepper or <code>null</code>
* @param unique If <code>true</code>, the method returns new instances of the stepper contribution.
*
* @return The stepper instance or <code>null</code>.
*/
public IStepper getStepper(String id, boolean unique) {
Assert.isNotNull(id);
IStepper contribution = null;
if (getExtensions().containsKey(id)) {
ExecutableExtensionProxy<IStepper> proxy = getExtensions().get(id);
// Get the extension instance
contribution = unique ? proxy.newInstance() : proxy.getInstance();
}
return contribution;
}
}
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