1 /* DomText.java -- 2 Copyright (C) 1999, 2000, 2001, 2004 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 package gnu.xml.dom; 39 40 import gnu.java.lang.CPStringBuilder; 41 42 import org.w3c.dom.DOMException; 43 import org.w3c.dom.Text; 44 45 /** 46 * <p> "Text" implementation. </p> 47 * 48 * @author David Brownell 49 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> 50 */ 51 public class DomText 52 extends DomCharacterData 53 implements Text 54 { 55 56 // NOTE: deleted unused per-instance "isIgnorable" 57 // support to reclaim its space. 58 59 /** 60 * Constructs a text node associated with the specified 61 * document and holding the specified data. 62 * 63 * <p>This constructor should only be invoked by a Document object 64 * as part of its createTextNode functionality, or through a subclass 65 * which is similarly used in a "Sub-DOM" style layer. 66 */ DomText(DomDocument owner, String value)67 protected DomText(DomDocument owner, String value) 68 { 69 super(TEXT_NODE, owner, value); 70 } 71 DomText(DomDocument owner, char[] buf, int off, int len)72 protected DomText(DomDocument owner, char[] buf, int off, int len) 73 { 74 super(TEXT_NODE, owner, buf, off, len); 75 } 76 77 // Used by DomCDATA DomText(short nodeType, DomDocument owner, String value)78 DomText(short nodeType, DomDocument owner, String value) 79 { 80 super(nodeType, owner, value); 81 } 82 DomText(short nodeType, DomDocument owner, char[] buf, int off, int len)83 DomText(short nodeType, DomDocument owner, char[] buf, int off, int len) 84 { 85 super(nodeType, owner, buf, off, len); 86 } 87 88 /** 89 * <b>DOM L1</b> 90 * Returns the string "#text". 91 */ 92 // can't be 'final' with CDATA subclassing getNodeName()93 public String getNodeName() 94 { 95 return "#text"; 96 } 97 98 /** 99 * <b>DOM L1</b> 100 * Splits this text node in two parts at the offset, returning 101 * the new text node (the sibling with the second part). 102 */ splitText(int offset)103 public Text splitText(int offset) 104 { 105 if (isReadonly()) 106 { 107 throw new DomDOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR); 108 } 109 try 110 { 111 String text = getNodeValue(); 112 String before = text.substring(0, offset); 113 String after = text.substring(offset); 114 Text next; 115 116 if (getNodeType() == TEXT_NODE) 117 { 118 next = owner.createTextNode(after); 119 } 120 else // CDATA_SECTION_NODE 121 { 122 next = owner.createCDATASection(after); 123 } 124 125 if (this.next != null) 126 { 127 parent.insertBefore(next, this.next); 128 } 129 else 130 { 131 parent.appendChild(next); 132 } 133 setNodeValue(before); 134 return next; 135 136 } 137 catch (IndexOutOfBoundsException x) 138 { 139 throw new DomDOMException(DOMException.INDEX_SIZE_ERR); 140 } 141 } 142 143 // DOM Level 3 144 isElementContentWhitespace()145 public boolean isElementContentWhitespace() 146 { 147 if (parent != null) 148 { 149 DomDoctype doctype = (DomDoctype) owner.getDoctype(); 150 if (doctype != null) 151 { 152 DTDElementTypeInfo info = 153 doctype.getElementTypeInfo(parent.getNodeName()); 154 if (info != null) 155 { 156 if (info.model == null && info.model.indexOf("#PCDATA") != -1) 157 { 158 return false; 159 } 160 return getNodeValue().trim().length() == 0; 161 } 162 } 163 } 164 return false; 165 } 166 getWholeText()167 public String getWholeText() 168 { 169 DomNode ref = this; 170 DomNode ctx; 171 for (ctx = previous; ctx != null && 172 (ctx.nodeType == TEXT_NODE || ctx.nodeType == CDATA_SECTION_NODE); 173 ctx = ctx.previous) 174 { 175 ref = ctx; 176 } 177 CPStringBuilder buf = new CPStringBuilder(ref.getNodeValue()); 178 for (ctx = ref.next; ctx != null && 179 (ctx.nodeType == TEXT_NODE || ctx.nodeType == CDATA_SECTION_NODE); 180 ctx = ctx.next) 181 { 182 buf.append(ctx.getNodeValue()); 183 } 184 return buf.toString (); 185 } 186 replaceWholeText(String content)187 public Text replaceWholeText(String content) 188 throws DOMException 189 { 190 boolean isEmpty = (content == null || content.length () == 0); 191 if (!isEmpty) 192 { 193 setNodeValue(content); 194 } 195 196 DomNode ref = this; 197 DomNode ctx; 198 for (ctx = previous; ctx != null && 199 (ctx.nodeType == TEXT_NODE || ctx.nodeType == CDATA_SECTION_NODE); 200 ctx = ctx.previous) 201 { 202 ref = ctx; 203 } 204 ctx = ref.next; 205 if ((isEmpty || ref != this) && parent != null) 206 { 207 parent.removeChild(ref); 208 } 209 for (; ctx != null && 210 (ctx.nodeType == TEXT_NODE || ctx.nodeType == CDATA_SECTION_NODE); 211 ctx = ref) 212 { 213 ref = ctx.next; 214 if ((isEmpty || ctx != this) && parent != null) 215 { 216 parent.removeChild(ctx); 217 } 218 } 219 return (isEmpty) ? null : this; 220 } 221 222 } 223