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/*******************************************************************************
* Copyright (c) 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v0.5
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v05.html
*
* Contributors:
* IBM Corp. - Rational Software - initial implementation
******************************************************************************/
/*
* Created on Jun 12, 2003
*/
package org.eclipse.cdt.internal.ui.search;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.core.search.ICSearchScope;
import org.eclipse.cdt.core.search.SearchEngine;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkingSet;
/**
* @author aniefer
*
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
public class CSearchScopeFactory {
private static CSearchScopeFactory fgInstance;
private static ICSearchScope EMPTY_SCOPE= SearchEngine.createCSearchScope(new ICElement[]{});
/**
*
*/
public CSearchScopeFactory() {
super();
}
public static CSearchScopeFactory getInstance() {
if (fgInstance == null)
fgInstance = new CSearchScopeFactory();
return fgInstance;
}
/**
* @param sets
* @return
*/
public ICSearchScope createCSearchScope(IWorkingSet[] sets) {
if (sets == null || sets.length < 1)
return EMPTY_SCOPE;
Set cElements= new HashSet(sets.length * 10);
for (int i= 0; i < sets.length; i++)
addCElements(cElements, sets[i]);
return createCSearchScope(cElements);
}
/**
* @param cElements
* @return
*/
private ICSearchScope createCSearchScope(Set cElements) {
return SearchEngine.createCSearchScope((ICElement[])cElements.toArray(new ICElement[cElements.size()]));
}
/**
* @param cElements
* @param set
*/
private void addCElements(Set cElements, IWorkingSet set) {
if (set == null)
return;
IAdaptable[] elements= set.getElements();
for (int i= 0; i < elements.length; i++) {
if (elements[i] instanceof ICElement)
addCElements(cElements, (ICElement)elements[i]);
else
addCElements(cElements, elements[i]);
}
}
/**
* @param cElements
* @param adaptable
*/
private void addCElements(Set cElements, IAdaptable resource) {
ICElement cElement= (ICElement)resource.getAdapter(ICElement.class);
if (cElement == null)
// not an ICElement resource
return;
addCElements(cElements, cElement);
}
/**
* @param cElements
* @param element
*/
private void addCElements(Set cElements, ICElement element) {
cElements.add(element);
}
/**
* @param fStructuredSelection
* @return
*/
public ICSearchScope createCSearchScope(IStructuredSelection fStructuredSelection) {
Set cElements = new HashSet( fStructuredSelection.size() );
Iterator iter = fStructuredSelection.iterator();
while( iter.hasNext() ){
addCElements( cElements, (IAdaptable)iter.next() );
}
return createCSearchScope( cElements );
}
}
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