| /* DomCharacterData.java -- |
| Copyright (C) 1999,2000,2001,2004,2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.xml.dom; |
| |
| import org.w3c.dom.CharacterData; |
| import org.w3c.dom.DOMException; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| import org.w3c.dom.events.MutationEvent; |
| |
| |
| /** |
| * <p> Abstract "CharacterData" implementation. This |
| * facilitates reusing code in classes implementing subtypes of that DOM |
| * interface (Text, Comment, CDATASection). </p> |
| * |
| * @author David Brownell |
| * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> |
| */ |
| public abstract class DomCharacterData |
| extends DomNode |
| implements CharacterData |
| { |
| |
| /** |
| * Empty node list representing the children of character data nodes. |
| */ |
| static class EmptyNodeList |
| implements NodeList |
| { |
| |
| public int getLength() |
| { |
| return 0; |
| } |
| |
| public Node item(int index) |
| { |
| return null; |
| } |
| |
| } |
| |
| /** |
| * Singleton empty node list for character data nodes. |
| */ |
| static final NodeList CHILD_NODES = new EmptyNodeList(); |
| |
| private String text; |
| |
| // package private |
| DomCharacterData(short nodeType, DomDocument doc, String value) |
| { |
| super(nodeType, doc); |
| text = (value == null) ? "" : value; |
| } |
| |
| // package private |
| DomCharacterData(short nodeType, DomDocument doc, |
| char[] buf, int offset, int length) |
| { |
| super(nodeType, doc); |
| text = (buf == null) ? "" : new String(buf, offset, length); |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Appends the specified data to the value of this node. |
| * Causes a DOMCharacterDataModified mutation event to be reported. |
| */ |
| public void appendData(String arg) |
| { |
| if (isReadonly()) |
| { |
| throw new DomDOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR); |
| } |
| String value = text + arg; |
| mutating(value); |
| text = value; |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Modifies the value of this node. |
| * Causes a DOMCharacterDataModified mutation event to be reported. |
| */ |
| public void deleteData(int offset, int count) |
| { |
| if (isReadonly()) |
| { |
| throw new DomDOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR); |
| } |
| char[] raw = text.toCharArray(); |
| if (offset < 0 || count < 0 || offset > raw.length) |
| { |
| throw new DomDOMException(DOMException.INDEX_SIZE_ERR); |
| } |
| if ((offset + count) > raw.length) |
| { |
| count = raw.length - offset; |
| } |
| if (count == 0) |
| { |
| return; |
| } |
| try |
| { |
| char[] buf = new char[raw.length - count]; |
| System.arraycopy(raw, 0, buf, 0, offset); |
| System.arraycopy(raw, offset + count, buf, offset, |
| raw.length - (offset + count)); |
| String value = new String(buf); |
| mutating(value); |
| text = value; |
| } |
| catch (IndexOutOfBoundsException x) |
| { |
| throw new DomDOMException(DOMException.INDEX_SIZE_ERR); |
| } |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Returns the value of this node. |
| */ |
| public String getNodeValue() |
| { |
| return text; |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Returns the value of this node; same as getNodeValue. |
| */ |
| public final String getData() |
| { |
| return text; |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Returns the length of the data. |
| */ |
| public int getLength() |
| { |
| return text.length(); |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Modifies the value of this node. |
| */ |
| public void insertData(int offset, String arg) |
| { |
| if (isReadonly()) |
| { |
| throw new DomDOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR); |
| } |
| char[] raw = text.toCharArray(); |
| char[] tmp = arg.toCharArray (); |
| char[] buf = new char[raw.length + tmp.length]; |
| |
| try |
| { |
| System.arraycopy(raw, 0, buf, 0, offset); |
| System.arraycopy(tmp, 0, buf, offset, tmp.length); |
| System.arraycopy(raw, offset, buf, offset + tmp.length, |
| raw.length - offset); |
| String value = new String(buf); |
| mutating(value); |
| text = value; |
| } |
| catch (IndexOutOfBoundsException x) |
| { |
| throw new DomDOMException(DOMException.INDEX_SIZE_ERR); |
| } |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Modifies the value of this node. Causes DOMCharacterDataModified |
| * mutation events to be reported (at least one). |
| */ |
| public void replaceData(int offset, int count, String arg) |
| { |
| if (readonly) |
| { |
| throw new DomDOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR); |
| } |
| char[] raw = text.toCharArray(); |
| |
| // deleteData |
| if (offset < 0 || count < 0 || offset > raw.length) |
| { |
| throw new DomDOMException(DOMException.INDEX_SIZE_ERR); |
| } |
| if ((offset + count) > raw.length) |
| { |
| count = raw.length - offset; |
| } |
| try |
| { |
| char[] buf = new char[raw.length - count]; |
| System.arraycopy(raw, 0, buf, 0, offset); |
| System.arraycopy(raw, offset + count, buf, offset, |
| raw.length - (offset + count)); |
| |
| // insertData |
| char[] tmp = arg.toCharArray (); |
| char[] buf2 = new char[buf.length + tmp.length]; |
| System.arraycopy(raw, 0, buf, 0, offset); |
| System.arraycopy(tmp, 0, buf, offset, tmp.length); |
| System.arraycopy(raw, offset, buf, offset + tmp.length, |
| raw.length - offset); |
| String value = new String(buf); |
| mutating(value); |
| text = value; |
| } |
| catch (IndexOutOfBoundsException x) |
| { |
| throw new DomDOMException(DOMException.INDEX_SIZE_ERR); |
| } |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Assigns the value of this node. |
| * Causes a DOMCharacterDataModified mutation event to be reported. |
| */ |
| public void setNodeValue(String value) |
| { |
| if (isReadonly()) |
| { |
| throw new DomDOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR); |
| } |
| if (value == null) |
| { |
| value = ""; |
| } |
| mutating(value); |
| text = value; |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Assigns the value of this node; same as setNodeValue. |
| */ |
| final public void setData(String data) |
| { |
| setNodeValue(data); |
| } |
| |
| /** |
| * <b>DOM L1</b> |
| * Returns the specified substring. |
| */ |
| public String substringData(int offset, int count) |
| { |
| try |
| { |
| return text.substring(offset, count); |
| } |
| catch (StringIndexOutOfBoundsException e) |
| { |
| if (offset >= 0 && count >= 0 && offset < text.length()) |
| { |
| return text.substring(offset); |
| } |
| throw new DomDOMException(DOMException.INDEX_SIZE_ERR); |
| } |
| } |
| |
| /** |
| * Returns an empty node list. |
| * Character data nodes do not have children. |
| */ |
| public NodeList getChildNodes() |
| { |
| return CHILD_NODES; |
| } |
| |
| /** |
| * The base URI for character data is <code>null</code>. |
| * @since DOM Level 3 Core |
| */ |
| public final String getBaseURI() |
| { |
| return null; |
| } |
| |
| private void mutating(String newValue) |
| { |
| if (!reportMutations) |
| { |
| return; |
| } |
| |
| // EVENT: DOMCharacterDataModified, target = this, |
| // prev/new values provided |
| MutationEvent event; |
| |
| event = (MutationEvent) createEvent("MutationEvents"); |
| event.initMutationEvent("DOMCharacterDataModified", |
| true /* bubbles */, false /* nocancel */, |
| null, text, newValue, null, (short) 0); |
| dispatchEvent(event); |
| } |
| |
| } |
| |