| /******************************************************************************* |
| * Copyright (c) 2005 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: |
| * Ian Trimble - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.dtmanager.converter.internal; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| import org.eclipse.jst.pagedesigner.dtmanager.converter.ITagConverterContext; |
| import org.eclipse.jst.pagedesigner.dtmanager.converter.ITransformOperation; |
| import org.eclipse.jst.pagedesigner.dtmanager.converter.ITransformer; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Default ITransformer implementation. |
| * |
| * @author Ian Trimble - Oracle |
| */ |
| public class DefaultTransformer implements ITransformer { |
| |
| private ITagConverterContext tagConverterContext; |
| // synchronization occurs on this object, so it must never |
| // be allowed to be null |
| private final Collection transformOperations = new ArrayList(); |
| |
| /** |
| * Instantiates an instance. |
| * |
| * @param context ITagConverterContext instance. |
| */ |
| public DefaultTransformer(ITagConverterContext context) { |
| this.tagConverterContext = context; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.jst.pagedesigner.dtmanager.converter.ITransformer#appendTransformOperation(org.eclipse.jst.pagedesigner.dtmanager.converter.ITransformOperation) |
| */ |
| public void appendTransformOperation(ITransformOperation operation) { |
| synchronized(transformOperations) { |
| if (operation != null) { |
| operation.setTagConverterContext(tagConverterContext); |
| transformOperations.add(operation); |
| } |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.jst.pagedesigner.dtmanager.converter.internal.provisional.ITransformer#transform(org.w3c.dom.Element) |
| */ |
| public Element transform(Element srcElement) { |
| Element curElement = null; |
| if (srcElement != null) { |
| synchronized(transformOperations) { |
| if (transformOperations.size() > 0) { |
| curElement = srcElement; |
| Iterator itOperations = transformOperations.iterator(); |
| while (itOperations.hasNext()) { |
| ITransformOperation operation = (ITransformOperation)itOperations.next(); |
| curElement = operation.transform(srcElement, curElement); |
| } |
| } |
| } |
| } |
| return curElement; |
| } |
| |
| } |