| /******************************************************************************* |
| * Copyright (c) 2001, 2004 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| * Jens Lukowski/Innoopract - initial renaming/restructuring |
| * |
| *******************************************************************************/ |
| package org.eclipse.wst.xml.core.internal.document; |
| |
| |
| |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.Text; |
| |
| /** |
| * XMLModelContext class |
| */ |
| class XMLModelContext { |
| private Node nextNode = null; |
| private Node parentNode = null; |
| |
| // private XMLModelImpl model = null; |
| private Node rootNode = null; |
| |
| /** |
| * XMLModelContext constructor |
| * |
| * @param rootNode |
| * org.w3c.dom.Node |
| */ |
| XMLModelContext(Node rootNode) { |
| super(); |
| |
| this.rootNode = rootNode; |
| } |
| |
| /** |
| * findEndTag method |
| * |
| * @return org.w3c.dom.Element |
| * @param tagName |
| * java.lang.String |
| */ |
| Element findEndTag(String tagName) { |
| if (tagName == null) |
| return null; |
| if (this.parentNode == null) |
| return null; |
| |
| for (Node parent = this.parentNode.getParentNode(); parent != null; parent = parent.getParentNode()) { |
| if (parent.getNodeType() != Node.ELEMENT_NODE) |
| break; |
| ElementImpl element = (ElementImpl) parent; |
| if (element.hasEndTag()) { |
| if (element.matchTagName(tagName)) |
| return element; |
| // if ancestor element has end tag stop search |
| break; |
| } |
| if (element.getNextSibling() != null) |
| break; |
| } |
| |
| return null; |
| } |
| |
| /** |
| */ |
| Text findNextText() { |
| Node node = this.nextNode; |
| while (node != null) { |
| if (node != this.nextNode && node.getNodeType() == Node.TEXT_NODE) { |
| TextImpl text = (TextImpl) node; |
| // skip empty text |
| if (text.getStructuredDocumentRegion() != null) |
| return text; |
| } |
| Node child = node.getFirstChild(); |
| if (child != null) { |
| node = child; |
| continue; |
| } |
| while (node != null) { |
| Node next = node.getNextSibling(); |
| if (next != null) { |
| node = next; |
| break; |
| } |
| node = node.getParentNode(); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * findPreviousText method |
| * |
| * @return org.w3c.dom.Text |
| */ |
| Text findPreviousText() { |
| if (this.parentNode == null) |
| return null; |
| Node node = null; |
| if (this.nextNode != null) |
| node = this.nextNode.getPreviousSibling(); |
| else |
| node = this.parentNode.getLastChild(); |
| if (node == null || node.getNodeType() != Node.TEXT_NODE) |
| return null; |
| return (Text) node; |
| } |
| |
| /** |
| * findStartTag method |
| * |
| * @return org.w3c.dom.Element |
| * @param tagName |
| * java.lang.String |
| */ |
| Element findStartTag(String tagName, String rootName) { |
| if (tagName == null) |
| return null; |
| |
| // check previous for empty content element |
| Node prev = null; |
| if (this.nextNode != null) |
| prev = this.nextNode.getPreviousSibling(); |
| else if (this.parentNode != null) |
| prev = this.parentNode.getLastChild(); |
| if (prev != null && prev.getNodeType() == Node.ELEMENT_NODE) { |
| ElementImpl element = (ElementImpl) prev; |
| if (!element.hasEndTag() && !element.isEmptyTag() && element.matchTagName(tagName)) |
| return element; |
| } |
| |
| for (Node parent = this.parentNode; parent != null; parent = parent.getParentNode()) { |
| if (parent.getNodeType() != Node.ELEMENT_NODE) |
| break; |
| ElementImpl element = (ElementImpl) parent; |
| if (element.matchTagName(tagName)) |
| return element; |
| if (rootName != null && element.matchTagName(rootName)) |
| break; |
| } |
| |
| return null; |
| } |
| |
| /** |
| * getNextNode method |
| * |
| * @return org.w3c.dom.Node |
| */ |
| Node getNextNode() { |
| return this.nextNode; |
| } |
| |
| /** |
| * getParentNode method |
| * |
| * @return org.w3c.dom.Node |
| */ |
| Node getParentNode() { |
| return this.parentNode; |
| } |
| |
| /** |
| * getRootNode method |
| * |
| * @return org.w3c.dom.Node |
| */ |
| Node getRootNode() { |
| return this.rootNode; |
| } |
| |
| /** |
| * setLast method |
| */ |
| void setLast() { |
| if (this.parentNode == null) |
| return; |
| if (this.nextNode != null) { |
| Node prev = this.nextNode.getPreviousSibling(); |
| if (prev == null || prev.getNodeType() != Node.ELEMENT_NODE) |
| return; |
| ElementImpl element = (ElementImpl) prev; |
| if (element.hasEndTag() || !element.isContainer() || element.isEmptyTag()) |
| return; |
| setParentNode(prev); |
| } |
| |
| // find last open parent |
| Node parent = this.parentNode; |
| Node last = parent.getLastChild(); |
| while (last != null) { |
| if (last.getNodeType() != Node.ELEMENT_NODE) |
| break; |
| ElementImpl element = (ElementImpl) last; |
| if (element.hasEndTag() || !element.isContainer() || element.isEmptyTag()) |
| break; |
| parent = element; |
| last = parent.getLastChild(); |
| } |
| if (parent != this.parentNode) |
| setParentNode(parent); |
| } |
| |
| /** |
| * setNextNode method |
| * |
| * @param nextNode |
| * org.w3c.dom.Node |
| */ |
| void setNextNode(Node nextNode) { |
| this.nextNode = nextNode; |
| if (nextNode == null) |
| return; |
| this.parentNode = nextNode.getParentNode(); |
| } |
| |
| /** |
| * setParentNode method |
| * |
| * @param parentNode |
| * org.w3c.dom.Node |
| */ |
| void setParentNode(Node parentNode) { |
| this.parentNode = parentNode; |
| this.nextNode = null; |
| } |
| } |