/* * Copyright 2008 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package com.google.gwt.uibinder.rebind; import com.google.gwt.core.ext.UnableToCompleteException; import org.w3c.dom.CDATASection; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import org.w3c.dom.Text; /** * Traverses the children of a {@link Node}. */ class ChildWalker { /** * Take a {@link NodeVisitor} and show it each child of the given {@link Node} * that is of a type relevant to our templates. * <p> * Note that this is not a recursive call, though the visitor itself may * choose to recurse * * @throws UnableToCompleteException */ void accept(Node n, NodeVisitor v) throws UnableToCompleteException { NodeList childNodes = n.getChildNodes(); for (int i = 0; i < childNodes.getLength(); ++i) { Node child = childNodes.item(i); switch (child.getNodeType()) { case Node.ELEMENT_NODE: v.visitElement((Element) child); break; case Node.TEXT_NODE: v.visitText((Text) child); break; case Node.COMMENT_NODE: // Ditch comment nodes. break; case Node.CDATA_SECTION_NODE: v.visitCData((CDATASection) child); break; case Node.ENTITY_NODE: case Node.ENTITY_REFERENCE_NODE: case Node.ATTRIBUTE_NODE: case Node.DOCUMENT_NODE: case Node.DOCUMENT_FRAGMENT_NODE: case Node.NOTATION_NODE: case Node.PROCESSING_INSTRUCTION_NODE: default: { // None of these are expected node types. throw new RuntimeException("Unexpected XML node"); } } } } }