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/*******************************************************************************
* Copyright (c) 2011, 2012 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.statushandler.internal;
import org.eclipse.core.expressions.Expression;
import org.eclipse.core.expressions.ExpressionConverter;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.tcf.te.runtime.extensions.ExecutableExtension;
/**
* Status handler binding implementation.
*/
public class StatusHandlerBinding extends ExecutableExtension {
// The mandatory handler identifier
private String handlerId;
// The converted expression
private Expression expression;
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.extensions.ExecutableExtension#doSetInitializationData(org.eclipse.core.runtime.IConfigurationElement, java.lang.String, java.lang.Object)
*/
@Override
public void doSetInitializationData(IConfigurationElement config, String propertyName, Object data) throws CoreException {
super.doSetInitializationData(config, propertyName, data);
// Initialize the handler id field by reading the <handler> extension attribute.
// Throws an exception if the id is empty or null.
handlerId = config != null ? config.getAttribute("handlerId") : null; //$NON-NLS-1$
if (handlerId == null || "".equals(handlerId.trim())) { //$NON-NLS-1$
throw createMissingMandatoryAttributeException("handlerId", config.getContributor().getName()); //$NON-NLS-1$
}
// Read the sub elements of the extension
IConfigurationElement[] children = config != null ? config.getChildren() : null;
// The "enablement" element is the only expected one
if (children != null && children.length > 0) {
expression = ExpressionConverter.getDefault().perform(children[0]);
}
}
/**
* Returns the status handler id which is associated with this binding.
*
* @return The status handler id.
*/
public String getHandlerId() {
return handlerId;
}
/**
* Returns the enablement expression which is associated with this binding.
*
* @return The enablement expression or <code>null</code>.
*/
public Expression getEnablement() {
return expression;
}
}
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