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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.core.sourcelookup;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
/**
* Common super class for implementations of source lookup participants.
* <p>
* Clients implementing source lookup participants should subclass this class.
* </p>
* @since 3.0
*/
public abstract class AbstractSourceLookupParticipant implements ISourceLookupParticipant {
private ISourceLookupDirector fDirector;
protected static final Object[] EMPTY = new Object[0];
/* (non-Javadoc)
* @see org.eclipse.debug.internal.core.sourcelookup.ISourceLookupParticipant#init(org.eclipse.debug.internal.core.sourcelookup.ISourceLookupDirector)
*/
public void init(ISourceLookupDirector director) {
fDirector = director;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.core.sourcelookup.ISourceLookupParticipant#dispose()
*/
public void dispose() {
fDirector = null;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.core.sourcelookup.ISourceLookupParticipant#findSourceElements(java.lang.Object)
*/
public Object[] findSourceElements(Object object) throws CoreException {
List results = null;
if (isFindDuplicates()) {
results = new ArrayList();
}
String name = getSourceName(object);
if (name != null) {
ISourceContainer[] containers = getSourceContainers();
for (int i = 0; i < containers.length; i++) {
ISourceContainer container = getDelegateContainer(containers[i]);
if (container != null) {
Object[] objects = container.findSourceElements(name);
if (objects.length > 0) {
if (isFindDuplicates()) {
for (int j = 0; j < objects.length; j++) {
results.add(objects[j]);
}
} else {
if (objects.length == 1) {
return objects;
}
return new Object[]{objects[0]};
}
}
}
}
}
if (results == null) {
return EMPTY;
}
return results.toArray();
}
/**
* Returns the source container to search in place of the given source
* container, or <code>null</code> if the given source container is not
* to be searched. The default implementation does not translate source
* containers. Subclasses should override if required.
*
* @param container the source container about to be searched (proxy)
* @return the source container to be searched (delegate), or <code>null</code>
* if the source container should not be searched
*/
protected ISourceContainer getDelegateContainer(ISourceContainer container) {
return container;
}
/**
* Returns the source lookup director this participant is registered with
* or <code>null</code> if none.
*
* @return the source lookup director this participant is registered with
* or <code>null</code> if none
*/
protected ISourceLookupDirector getDirector() {
return fDirector;
}
/**
* Returns whether this participant's source lookup director is configured
* to search for duplicate source elements.
*
* @return whether this participant's source lookup director is configured
* to search for duplicate source elements
*/
protected boolean isFindDuplicates() {
return getDirector().isFindDuplicates();
}
/**
* Returns the source containers currently registered with this participant's
* source lookup director.
*
* @return the source containers currently registered with this participant's
* source lookup director
*/
protected ISourceContainer[] getSourceContainers() {
return getDirector().getSourceContainers();
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.core.sourcelookup.ISourceLookupParticipant#sourceContainersChanged(org.eclipse.debug.internal.core.sourcelookup.ISourceLookupDirector)
*/
public void sourceContainersChanged(ISourceLookupDirector director) {
}
}
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