content: /*
   * Copyright (C) 2007 Esmertec AG.
   * Copyright (C) 2007 The Android Open Source Project
   *
   * 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.android.mms.dom;
  
  import java.util.NoSuchElementException;
  import java.util.Vector;
  
  import org.w3c.dom.DOMException;
  import org.w3c.dom.Document;
  import org.w3c.dom.NamedNodeMap;
  import org.w3c.dom.Node;
  import org.w3c.dom.NodeList;
  import org.w3c.dom.UserDataHandler;
  import org.w3c.dom.events.Event;
  import org.w3c.dom.events.EventException;
  import org.w3c.dom.events.EventListener;
  import org.w3c.dom.events.EventTarget;
  
  import com.android.mms.dom.events.EventTargetImpl;
  
  public abstract class NodeImpl implements Node, EventTarget {
      private Node mParentNode;
      private final Vector<Node> mChildNodes = new Vector<Node>();
      DocumentImpl mOwnerDocument;
      private final EventTarget mEventTarget = new EventTargetImpl(this);
  
      /*
       * Internal methods
       */
  
      protected NodeImpl(DocumentImpl owner) {
          mOwnerDocument = owner;
      }
  
      /*
       * Node Interface Methods
       */
  
      public Node appendChild(Node newChild) throws DOMException {
          ((NodeImpl)newChild).setParentNode(this);
          mChildNodes.remove(newChild);
          mChildNodes.add(newChild);
          return newChild;
      }
  
      public Node cloneNode(boolean deep) {
          // TODO Auto-generated method stub
          return null;
      }
  
      public NamedNodeMap getAttributes() {
          // Default. Override in Element.
          return null;
      }
  
      public NodeList getChildNodes() {
          return new NodeListImpl(this, null, false);
      }
  
      public Node getFirstChild() {
          Node firstChild = null;
          try {
              firstChild = mChildNodes.firstElement();
          }
          catch (NoSuchElementException e) {
              // Ignore and return null
          }
          return firstChild;
      }
  
      public Node getLastChild() {
          Node lastChild = null;
          try {
              lastChild = mChildNodes.lastElement();
          }
          catch (NoSuchElementException e) {
              // Ignore and return null
          }
          return lastChild;
      }
  
      public String getLocalName() {
          // TODO Auto-generated method stub
          return null;
      }
  
      public String getNamespaceURI() {
          // TODO Auto-generated method stub
          return null;
      }
  
      public Node getNextSibling() {
          if ((mParentNode != null) && (this != mParentNode.getLastChild())) {
              Vector<Node> siblings = ((NodeImpl)mParentNode).mChildNodes;
              int indexOfThis = siblings.indexOf(this);
              return siblings.elementAt(indexOfThis + 1);
          }
          return null;
      }
  
      public abstract String getNodeName();
  
      public abstract short getNodeType();
  
      public String getNodeValue() throws DOMException {
          // Default behaviour. Override if required.
          return null;
      }
  
      public Document getOwnerDocument() {
          return mOwnerDocument;
      }
  
      public Node getParentNode() {
          return mParentNode;
      }
  
      public String getPrefix() {
          // TODO Auto-generated method stub
          return null;
      }
  
      public Node getPreviousSibling() {
          if ((mParentNode != null) && (this != mParentNode.getFirstChild())) {
              Vector<Node> siblings = ((NodeImpl)mParentNode).mChildNodes;
              int indexOfThis = siblings.indexOf(this);
              return siblings.elementAt(indexOfThis - 1);
          }
          return null;
      }
  
      public boolean hasAttributes() {
          // Default. Override in Element.
          return false;
      }
  
      public boolean hasChildNodes() {
          return !(mChildNodes.isEmpty());
      }
  
      public Node insertBefore(Node newChild, Node refChild) throws DOMException {
          // TODO Auto-generated method stub
          return null;
      }
  
      public boolean isSupported(String feature, String version) {
          // TODO Auto-generated method stub
          return false;
      }
  
      public void normalize() {
          // TODO Auto-generated method stub
      }
  
      public Node removeChild(Node oldChild) throws DOMException {
          if (mChildNodes.contains(oldChild)) {
              mChildNodes.remove(oldChild);
              ((NodeImpl)oldChild).setParentNode(null);
          } else {
              throw new DOMException(DOMException.NOT_FOUND_ERR, "Child does not exist");
          }
          return null;
      }
  
      public Node replaceChild(Node newChild, Node oldChild) throws DOMException {
          if (mChildNodes.contains(oldChild)) {
              // Try to remove the new child if available
              try {
                  mChildNodes.remove(newChild);
              } catch (DOMException e) {
                  // Ignore exception
              }
              mChildNodes.setElementAt(newChild, mChildNodes.indexOf(oldChild));
              ((NodeImpl)newChild).setParentNode(this);
              ((NodeImpl)oldChild).setParentNode(null);
          } else {
              throw new DOMException(DOMException.NOT_FOUND_ERR, "Old child does not exist");
          }
          return oldChild;
      }
  
      public void setNodeValue(String nodeValue) throws DOMException {
          // Default behaviour. Override if required.
      }
  
      public void setPrefix(String prefix) throws DOMException {
          // TODO Auto-generated method stub
      }
  
      private void setParentNode(Node parentNode) {
          mParentNode = parentNode;
      }
  
      /*
       * EventTarget Interface
       */
  
      public void addEventListener(String type, EventListener listener, boolean useCapture) {
          mEventTarget.addEventListener(type, listener, useCapture);
      }
  
      public void removeEventListener(String type, EventListener listener, boolean useCapture) {
          mEventTarget.removeEventListener(type, listener, useCapture);
      }
  
      public boolean dispatchEvent(Event evt) throws EventException {
          return mEventTarget.dispatchEvent(evt);
      }
  
      public String getBaseURI() {
          return null;
      }
  
      public short compareDocumentPosition(Node other) throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, null);
      }
  
      public String getTextContent() throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, null);
      }
  
      public void setTextContent(String textContent) throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, null);
      }
  
      public boolean isSameNode(Node other) {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, null);
      }
  
      public String lookupPrefix(String namespaceURI) {
          return null;
      }
  
      public boolean isDefaultNamespace(String namespaceURI) {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, null);
      }
  
      public String lookupNamespaceURI(String prefix) {
          return null;
      }
  
      public boolean isEqualNode(Node arg) {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, null);
      }
  
      public Object getFeature(String feature, String version) {
          return null;
      }
  
      public Object setUserData(String key, Object data,
              UserDataHandler handler) {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, null);
      }
  
      public Object getUserData(String key) {
          return null;
      }
  }
  