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A library jar that provides APIs for Applications written for the Google Android Platform.

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/*
 * 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 org.apache.harmony.xml.dom;

import org.w3c.dom.DOMException;
import org.w3c.dom.Node;
import org.w3c.dom.Text;

/**
 * Provides a straightforward implementation of the corresponding W3C DOM
 * interface. The class is used internally only, thus only notable members that
 * are not in the original interface are documented (the W3C docs are quite
 * extensive). Hope that's ok.
 * 

* Some of the fields may have package visibility, so other classes belonging to * the DOM implementation can easily access them while maintaining the DOM tree * structure. */ public class TextImpl extends CharacterDataImpl implements Text { public TextImpl(DocumentImpl document, String data) { super(document, data); } @Override public String getNodeName() { return "#text"; } @Override public short getNodeType() { return Node.TEXT_NODE; } public final Text splitText(int offset) throws DOMException { Text newText = document.createTextNode( substringData(offset, getLength() - offset)); deleteData(0, offset); Node refNode = getNextSibling(); if (refNode == null) { getParentNode().appendChild(newText); } else { getParentNode().insertBefore(newText, refNode); } return this; } public final boolean isElementContentWhitespace() { // Undefined because we don't validate. Whether whitespace characters // constitute "element content whitespace" is defined by the containing // element's declaration (DTD) and we don't parse that. // TODO: wire this up when we support document validation return false; } public final String getWholeText() { // TODO: support entity references. This code should expand through // the child elements of entity references. // http://code.google.com/p/android/issues/detail?id=6807 StringBuilder result = new StringBuilder(); for (TextImpl n = firstTextNodeInCurrentRun(); n != null; n = n.nextTextNode()) { n.appendDataTo(result); } return result.toString(); } public final Text replaceWholeText(String content) throws DOMException { // TODO: support entity references. This code should expand and replace // the child elements of entity references. // http://code.google.com/p/android/issues/detail?id=6807 Node parent = getParentNode(); Text result = null; // delete all nodes in the current run of text... for (TextImpl n = firstTextNodeInCurrentRun(); n != null; ) { // ...except the current node if we have content for it if (n == this && content != null && content.length() > 0) { setData(content); result = this; n = n.nextTextNode(); } else { Node toRemove = n; // because removeChild() detaches siblings n = n.nextTextNode(); parent.removeChild(toRemove); } } return result; } /** * Returns the first text or CDATA node in the current sequence of text and * CDATA nodes. */ private TextImpl firstTextNodeInCurrentRun() { TextImpl firstTextInCurrentRun = this; for (Node p = getPreviousSibling(); p != null; p = p.getPreviousSibling()) { short nodeType = p.getNodeType(); if (nodeType == Node.TEXT_NODE || nodeType == Node.CDATA_SECTION_NODE) { firstTextInCurrentRun = (TextImpl) p; } else { break; } } return firstTextInCurrentRun; } /** * Returns the next sibling node if it exists and it is text or CDATA. * Otherwise returns null. */ private TextImpl nextTextNode() { Node nextSibling = getNextSibling(); if (nextSibling == null) { return null; } short nodeType = nextSibling.getNodeType(); return nodeType == Node.TEXT_NODE || nodeType == Node.CDATA_SECTION_NODE ? (TextImpl) nextSibling : null; } /** * Tries to remove this node using itself and the previous node as context. * If this node's text is empty, this node is removed and null is returned. * If the previous node exists and is a text node, this node's text will be * appended to that node's text and this node will be removed. * *

Although this method alters the structure of the DOM tree, it does * not alter the document's semantics. * * @return the node holding this node's text and the end of the operation. * Can be null if this node contained the empty string. */ public final TextImpl minimize() { if (getLength() == 0) { parent.removeChild(this); return null; } Node previous = getPreviousSibling(); if (previous == null || previous.getNodeType() != Node.TEXT_NODE) { return this; } TextImpl previousText = (TextImpl) previous; previousText.buffer.append(buffer); parent.removeChild(this); return previousText; } }





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