| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. and others. |
| * |
| * 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.dom; |
| |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| import org.w3c.dom.Text; |
| |
| /** |
| * @author mengbo |
| */ |
| public class DOMPosition implements IDOMPosition { |
| Node _containerNode; |
| |
| int _offset; |
| |
| /** |
| * @param containerNode |
| * @param offset |
| */ |
| public DOMPosition(Node containerNode, int offset) { |
| _containerNode = containerNode; |
| _offset = offset; |
| } |
| |
| /** |
| * this is the offset in the DOM tree. When parent node is text node, the |
| * offset if the offset into the actual displayed data of the text node. |
| * |
| * when parent is not text node, then the offset is the index in |
| * getIDOMNode().getChildNodes() |
| * |
| * @return the offset |
| */ |
| public int getOffset() { |
| return _offset; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.range.IDOMPosition#getNextSiblingNode() |
| */ |
| public Node getNextSiblingNode() { |
| if (isText()) |
| return null; |
| NodeList children = _containerNode.getChildNodes(); |
| int length = children.getLength(); |
| if (_offset >= length || _offset < 0) |
| return null; |
| return children.item(_offset); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.range.IDOMPosition#getPreviousSiblingNode() |
| */ |
| public Node getPreviousSiblingNode() { |
| if (isText()) |
| return null; |
| NodeList children = _containerNode.getChildNodes(); |
| int length = children.getLength(); |
| if (_offset > length || _offset <= 0) |
| return null; |
| return children.item(_offset - 1); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.range.IDOMPosition#getContainerNode() |
| */ |
| public Node getContainerNode() { |
| return _containerNode; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.range.IDOMPosition#isText() |
| */ |
| public boolean isText() { |
| return _containerNode instanceof Text; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.range.IDOMPosition#getSibling(boolean) |
| */ |
| public Node getSibling(boolean forward) { |
| if (forward) |
| return getNextSiblingNode(); |
| return getPreviousSiblingNode(); |
| } |
| |
| public IDOMPosition handleReplacement(Node original, Node replacement) { |
| if (original == this._containerNode) { |
| return new DOMPosition(replacement, this._offset); |
| } |
| return this; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#toString() |
| */ |
| public String toString() { |
| return "DOMPosition: (" + _containerNode + " : " + _offset + ")"; |
| } |
| } |