| /******************************************************************************* |
| * Copyright (c) 2008 Oracle Corporation. |
| * 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: |
| * Cameron Bateman - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.jsf.facelet.core.internal.cm.strategy; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| import org.eclipse.jst.jsf.common.dom.TagIdentifier; |
| import org.eclipse.jst.jsf.common.internal.policy.IdentifierOrderedIteratorPolicy; |
| import org.eclipse.jst.jsf.common.internal.strategy.IteratorPolicyBasedStrategyComposite; |
| import org.eclipse.jst.jsf.facelet.core.internal.cm.ExternalTagInfo; |
| import org.eclipse.jst.jsf.facelet.core.internal.cm.TagInfo; |
| |
| /** |
| * A composite of strategies for deriving external tag metadata. |
| * |
| * @author cbateman |
| * |
| */ |
| public class TagInfoStrategyComposite |
| extends |
| IteratorPolicyBasedStrategyComposite<TagIdentifier, TagInfo, TagInfo, String, IExternalMetadataStrategy> |
| { |
| private final Iterable<String> _policyOrder; |
| |
| /** |
| * @param policyOrder |
| */ |
| public TagInfoStrategyComposite(final Iterable<String> policyOrder) |
| { |
| super(new MyIteratorPolicy(policyOrder)); |
| _policyOrder = policyOrder; |
| } |
| |
| @Override |
| public TagInfo getNoResult() |
| { |
| return ExternalTagInfo.NULL_INSTANCE; |
| } |
| |
| /** |
| * |
| */ |
| public void resetIterator() |
| { |
| setPolicy(new MyIteratorPolicy(_policyOrder)); |
| } |
| |
| private static class MyIteratorPolicy extends |
| IdentifierOrderedIteratorPolicy<String> |
| { |
| private Iterator<String> _iterator; |
| |
| public MyIteratorPolicy(final Iterable<String> policyOrder) |
| { |
| super(policyOrder); |
| setExcludeNonExplicitValues(true); |
| } |
| |
| @Override |
| public Iterator<String> getIterator( |
| final Collection<String> forCollection) |
| { |
| if (_iterator == null) |
| { |
| _iterator = super.getIterator(forCollection); |
| } |
| return _iterator; |
| } |
| } |
| } |