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Diffstat (limited to 'src/com/sun/org/apache/xerces/internal/dom/TextImpl.java')
| -rw-r--r-- | src/com/sun/org/apache/xerces/internal/dom/TextImpl.java | 665 |
1 files changed, 0 insertions, 665 deletions
diff --git a/src/com/sun/org/apache/xerces/internal/dom/TextImpl.java b/src/com/sun/org/apache/xerces/internal/dom/TextImpl.java deleted file mode 100644 index 367ae65..0000000 --- a/src/com/sun/org/apache/xerces/internal/dom/TextImpl.java +++ /dev/null @@ -1,665 +0,0 @@ -/* - * reserved comment block - * DO NOT REMOVE OR ALTER! - */ -/* - * Copyright 1999-2002,2004 The Apache Software Foundation. - * - * 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.sun.org.apache.xerces.internal.dom; - -import org.w3c.dom.CharacterData; -import org.w3c.dom.DOMException; -import org.w3c.dom.Node; -import org.w3c.dom.Text; - -/** - * Text nodes hold the non-markup, non-Entity content of - * an Element or Attribute. - * <P> - * When a document is first made available to the DOM, there is only - * one Text object for each block of adjacent plain-text. Users (ie, - * applications) may create multiple adjacent Texts during editing -- - * see {@link org.w3c.dom.Element#normalize} for discussion. - * <P> - * Note that CDATASection is a subclass of Text. This is conceptually - * valid, since they're really just two different ways of quoting - * characters when they're written out as part of an XML stream. - * - * @xerces.internal - * - * @since PR-DOM-Level-1-19980818. - */ -public class TextImpl - extends CharacterDataImpl - implements CharacterData, Text { - - // - // Private Data members - // - - - // - // Constants - // - - /** Serialization version. */ - static final long serialVersionUID = -5294980852957403469L; - - // - // Constructors - // - - /** Default constructor */ - public TextImpl(){} - - /** Factory constructor. */ - public TextImpl(CoreDocumentImpl ownerDoc, String data) { - super(ownerDoc, data); - } - - /** - * NON-DOM: resets node and sets specified values for the current node - * - * @param ownerDoc - * @param data - */ - public void setValues(CoreDocumentImpl ownerDoc, String data){ - - flags=0; - nextSibling = null; - previousSibling=null; - setOwnerDocument(ownerDoc); - super.data = data; - } - // - // Node methods - // - - /** - * A short integer indicating what type of node this is. The named - * constants for this value are defined in the org.w3c.dom.Node interface. - */ - public short getNodeType() { - return Node.TEXT_NODE; - } - - /** Returns the node name. */ - public String getNodeName() { - return "#text"; - } - - /** - * NON-DOM: Set whether this Text is ignorable whitespace. - */ - public void setIgnorableWhitespace(boolean ignore) { - - if (needsSyncData()) { - synchronizeData(); - } - isIgnorableWhitespace(ignore); - - } // setIgnorableWhitespace(boolean) - - - /** - * DOM L3 Core CR - Experimental - * - * Returns whether this text node contains - * element content whitespace</a>, often abusively called "ignorable whitespace". - * The text node is determined to contain whitespace in element content - * during the load of the document or if validation occurs while using - * <code>Document.normalizeDocument()</code>. - * @since DOM Level 3 - */ - public boolean isElementContentWhitespace() { - // REVISIT: is this implemenation correct? - if (needsSyncData()) { - synchronizeData(); - } - return internalIsIgnorableWhitespace(); - } - - - /** - * DOM Level 3 WD - Experimental. - * Returns all text of <code>Text</code> nodes logically-adjacent text - * nodes to this node, concatenated in document order. - * @since DOM Level 3 - */ - public String getWholeText(){ - - if (needsSyncData()) { - synchronizeData(); - } - - if (fBufferStr == null){ - fBufferStr = new StringBuffer(); - } - else { - fBufferStr.setLength(0); - } - if (data != null && data.length() != 0) { - fBufferStr.append(data); - } - - //concatenate text of logically adjacent text nodes to the left of this node in the tree - getWholeTextBackward(this.getPreviousSibling(), fBufferStr, this.getParentNode()); - String temp = fBufferStr.toString(); - - //clear buffer - fBufferStr.setLength(0); - - //concatenate text of logically adjacent text nodes to the right of this node in the tree - getWholeTextForward(this.getNextSibling(), fBufferStr, this.getParentNode()); - - return temp + fBufferStr.toString(); - - } - - /** - * internal method taking a StringBuffer in parameter and inserts the - * text content at the start of the buffer - * - * @param buf - */ - protected void insertTextContent(StringBuffer buf) throws DOMException { - String content = getNodeValue(); - if (content != null) { - buf.insert(0, content); - } - } - - /** - * Concatenates the text of all logically-adjacent text nodes to the - * right of this node - * @param node - * @param buffer - * @param parent - * @return true - if execution was stopped because the type of node - * other than EntityRef, Text, CDATA is encountered, otherwise - * return false - */ - private boolean getWholeTextForward(Node node, StringBuffer buffer, Node parent){ - // boolean to indicate whether node is a child of an entity reference - boolean inEntRef = false; - - if (parent!=null) { - inEntRef = parent.getNodeType()==Node.ENTITY_REFERENCE_NODE; - } - - while (node != null) { - short type = node.getNodeType(); - if (type == Node.ENTITY_REFERENCE_NODE) { - if (getWholeTextForward(node.getFirstChild(), buffer, node)){ - return true; - } - } - else if (type == Node.TEXT_NODE || - type == Node.CDATA_SECTION_NODE) { - ((NodeImpl)node).getTextContent(buffer); - } - else { - return true; - } - - node = node.getNextSibling(); - } - - // if the parent node is an entity reference node, must - // check nodes to the right of the parent entity reference node for logically adjacent - // text nodes - if (inEntRef) { - getWholeTextForward(parent.getNextSibling(), buffer, parent.getParentNode()); - return true; - } - - return false; - } - - /** - * Concatenates the text of all logically-adjacent text nodes to the left of - * the node - * @param node - * @param buffer - * @param parent - * @return true - if execution was stopped because the type of node - * other than EntityRef, Text, CDATA is encountered, otherwise - * return false - */ - private boolean getWholeTextBackward(Node node, StringBuffer buffer, Node parent){ - - // boolean to indicate whether node is a child of an entity reference - boolean inEntRef = false; - if (parent!=null) { - inEntRef = parent.getNodeType()==Node.ENTITY_REFERENCE_NODE; - } - - while (node != null) { - short type = node.getNodeType(); - if (type == Node.ENTITY_REFERENCE_NODE) { - if (getWholeTextBackward(node.getLastChild(), buffer, node)){ - return true; - } - } - else if (type == Node.TEXT_NODE || - type == Node.CDATA_SECTION_NODE) { - ((TextImpl)node).insertTextContent(buffer); - } - else { - return true; - } - - node = node.getPreviousSibling(); - } - - // if the parent node is an entity reference node, must - // check nodes to the left of the parent entity reference node for logically adjacent - // text nodes - if (inEntRef) { - getWholeTextBackward(parent.getPreviousSibling(), buffer, parent.getParentNode()); - return true; - } - - return false; - } - - /** - * Replaces the text of the current node and all logically-adjacent text - * nodes with the specified text. All logically-adjacent text nodes are - * removed including the current node unless it was the recipient of the - * replacement text. - * - * @param content - * The content of the replacing Text node. - * @return text - The Text node created with the specified content. - * @since DOM Level 3 - */ - public Text replaceWholeText(String content) throws DOMException { - - if (needsSyncData()) { - synchronizeData(); - } - - //if the content is null - Node parent = this.getParentNode(); - if (content == null || content.length() == 0) { - // remove current node - if (parent != null) { // check if node in the tree - parent.removeChild(this); - } - return null; - } - - // make sure we can make the replacement - if (ownerDocument().errorChecking) { - if (!canModifyPrev(this)) { - throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR, - DOMMessageFormatter.formatMessage( - DOMMessageFormatter.DOM_DOMAIN, - "NO_MODIFICATION_ALLOWED_ERR", null)); - } - - // make sure we can make the replacement - if (!canModifyNext(this)) { - throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR, - DOMMessageFormatter.formatMessage( - DOMMessageFormatter.DOM_DOMAIN, - "NO_MODIFICATION_ALLOWED_ERR", null)); - } - } - - //replace the text node - Text currentNode = null; - if (isReadOnly()) { - Text newNode = this.ownerDocument().createTextNode(content); - if (parent != null) { // check if node in the tree - parent.insertBefore(newNode, this); - parent.removeChild(this); - currentNode = newNode; - } else { - return newNode; - } - } else { - this.setData(content); - currentNode = this; - } - - //check logically-adjacent text nodes - Node prev = currentNode.getPreviousSibling(); - while (prev != null) { - //If the logically-adjacent next node can be removed - //remove it. A logically adjacent node can be removed if - //it is a Text or CDATASection node or an EntityReference with - //Text and CDATA only children. - if ((prev.getNodeType() == Node.TEXT_NODE) - || (prev.getNodeType() == Node.CDATA_SECTION_NODE) - || (prev.getNodeType() == Node.ENTITY_REFERENCE_NODE && hasTextOnlyChildren(prev))) { - parent.removeChild(prev); - prev = currentNode; - } else { - break; - } - prev = prev.getPreviousSibling(); - } - - //check logically-adjacent text nodes - Node next = currentNode.getNextSibling(); - while (next != null) { - //If the logically-adjacent next node can be removed - //remove it. A logically adjacent node can be removed if - //it is a Text or CDATASection node or an EntityReference with - //Text and CDATA only children. - if ((next.getNodeType() == Node.TEXT_NODE) - || (next.getNodeType() == Node.CDATA_SECTION_NODE) - || (next.getNodeType() == Node.ENTITY_REFERENCE_NODE && hasTextOnlyChildren(next))) { - parent.removeChild(next); - next = currentNode; - } else { - break; - } - next = next.getNextSibling(); - } - - return currentNode; - } - - /** - * If any EntityReference to be removed has descendants that are not - * EntityReference, Text, or CDATASection nodes, the replaceWholeText method - * must fail before performing any modification of the document, raising a - * DOMException with the code NO_MODIFICATION_ALLOWED_ERR. Traverse previous - * siblings of the node to be replaced. If a previous sibling is an - * EntityReference node, get it's last child. If the last child was a Text - * or CDATASection node and its previous siblings are neither a replaceable - * EntityReference or Text or CDATASection nodes, return false. IF the last - * child was neither Text nor CDATASection nor a replaceable EntityReference - * Node, then return true. If the last child was a Text or CDATASection node - * any its previous sibling was not or was an EntityReference that did not - * contain only Text or CDATASection nodes, return false. Check this - * recursively for EntityReference nodes. - * - * @param node - * @return true - can replace text false - can't replace exception must be - * raised - */ - private boolean canModifyPrev(Node node) { - boolean textLastChild = false; - - Node prev = node.getPreviousSibling(); - - while (prev != null) { - - short type = prev.getNodeType(); - - if (type == Node.ENTITY_REFERENCE_NODE) { - //If the previous sibling was entityreference - //check if its content is replaceable - Node lastChild = prev.getLastChild(); - - //if the entity reference has no children - //return false - if (lastChild == null) { - return false; - } - - //The replacement text of the entity reference should - //be either only text,cadatsections or replaceable entity - //reference nodes or the last child should be neither of these - while (lastChild != null) { - short lType = lastChild.getNodeType(); - - if (lType == Node.TEXT_NODE - || lType == Node.CDATA_SECTION_NODE) { - textLastChild = true; - } else if (lType == Node.ENTITY_REFERENCE_NODE) { - if (!canModifyPrev(lastChild)) { - return false; - } else { - //If the EntityReference child contains - //only text, or non-text or ends with a - //non-text node. - textLastChild = true; - } - } else { - //If the last child was replaceable and others are not - //Text or CDataSection or replaceable EntityRef nodes - //return false. - if (textLastChild) { - return false; - } else { - return true; - } - } - lastChild = lastChild.getPreviousSibling(); - } - } else if (type == Node.TEXT_NODE - || type == Node.CDATA_SECTION_NODE) { - //If the previous sibling was text or cdatasection move to next - } else { - //If the previous sibling was anything but text or - //cdatasection or an entity reference, stop search and - //return true - return true; - } - - prev = prev.getPreviousSibling(); - } - - return true; - } - - /** - * If any EntityReference to be removed has descendants that are not - * EntityReference, Text, or CDATASection nodes, the replaceWholeText method - * must fail before performing any modification of the document, raising a - * DOMException with the code NO_MODIFICATION_ALLOWED_ERR. Traverse previous - * siblings of the node to be replaced. If a previous sibling is an - * EntityReference node, get it's last child. If the first child was a Text - * or CDATASection node and its next siblings are neither a replaceable - * EntityReference or Text or CDATASection nodes, return false. IF the first - * child was neither Text nor CDATASection nor a replaceable EntityReference - * Node, then return true. If the first child was a Text or CDATASection - * node any its next sibling was not or was an EntityReference that did not - * contain only Text or CDATASection nodes, return false. Check this - * recursively for EntityReference nodes. - * - * @param node - * @return true - can replace text false - can't replace exception must be - * raised - */ - private boolean canModifyNext(Node node) { - boolean textFirstChild = false; - - Node next = node.getNextSibling(); - while (next != null) { - - short type = next.getNodeType(); - - if (type == Node.ENTITY_REFERENCE_NODE) { - //If the previous sibling was entityreference - //check if its content is replaceable - Node firstChild = next.getFirstChild(); - - //if the entity reference has no children - //return false - if (firstChild == null) { - return false; - } - - //The replacement text of the entity reference should - //be either only text,cadatsections or replaceable entity - //reference nodes or the last child should be neither of these - while (firstChild != null) { - short lType = firstChild.getNodeType(); - - if (lType == Node.TEXT_NODE - || lType == Node.CDATA_SECTION_NODE) { - textFirstChild = true; - } else if (lType == Node.ENTITY_REFERENCE_NODE) { - if (!canModifyNext(firstChild)) { - return false; - } else { - //If the EntityReference child contains - //only text, or non-text or ends with a - //non-text node. - textFirstChild = true; - } - } else { - //If the first child was replaceable text and next - //children are not, then return false - if (textFirstChild) { - return false; - } else { - return true; - } - } - firstChild = firstChild.getNextSibling(); - } - } else if (type == Node.TEXT_NODE - || type == Node.CDATA_SECTION_NODE) { - //If the previous sibling was text or cdatasection move to next - } else { - //If the next sibling was anything but text or - //cdatasection or an entity reference, stop search and - //return true - return true; - } - - next = next.getNextSibling(); - } - - return true; - } - - /** - * Check if an EntityReference node has Text Only child nodes - * - * @param node - * @return true - Contains text only children - */ - private boolean hasTextOnlyChildren(Node node) { - - Node child = node; - - if (child == null) { - return false; - } - - child = child.getFirstChild(); - while (child != null) { - int type = child.getNodeType(); - - if (type == Node.ENTITY_REFERENCE_NODE) { - return hasTextOnlyChildren(child); - } - else if (type != Node.TEXT_NODE - && type != Node.CDATA_SECTION_NODE - && type != Node.ENTITY_REFERENCE_NODE) { - return false; - } - child = child.getNextSibling(); - } - return true; - } - - - /** - * NON-DOM: Returns whether this Text is ignorable whitespace. - */ - public boolean isIgnorableWhitespace() { - - if (needsSyncData()) { - synchronizeData(); - } - return internalIsIgnorableWhitespace(); - - } // isIgnorableWhitespace():boolean - - - // - // Text methods - // - - /** - * Break a text node into two sibling nodes. (Note that if the current node - * has no parent, they won't wind up as "siblings" -- they'll both be - * orphans.) - * - * @param offset - * The offset at which to split. If offset is at the end of the - * available data, the second node will be empty. - * - * @return A reference to the new node (containing data after the offset - * point). The original node will contain data up to that point. - * - * @throws DOMException(INDEX_SIZE_ERR) - * if offset is <0 or >length. - * - * @throws DOMException(NO_MODIFICATION_ALLOWED_ERR) - * if node is read-only. - */ - public Text splitText(int offset) - throws DOMException { - - if (isReadOnly()) { - throw new DOMException( - DOMException.NO_MODIFICATION_ALLOWED_ERR, - DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null)); - } - - if (needsSyncData()) { - synchronizeData(); - } - if (offset < 0 || offset > data.length() ) { - throw new DOMException(DOMException.INDEX_SIZE_ERR, - DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INDEX_SIZE_ERR", null)); - } - - // split text into two separate nodes - Text newText = - getOwnerDocument().createTextNode(data.substring(offset)); - setNodeValue(data.substring(0, offset)); - - // insert new text node - Node parentNode = getParentNode(); - if (parentNode != null) { - parentNode.insertBefore(newText, nextSibling); - } - - return newText; - - } // splitText(int):Text - - - /** - * NON-DOM (used by DOMParser): Reset data for the node. - */ - public void replaceData (String value){ - data = value; - } - - - /** - * NON-DOM (used by DOMParser: Sets data to empty string. - * Returns the value the data was set to. - */ - public String removeData (){ - String olddata=data; - data = ""; - return olddata; - } - -} // class TextImpl |