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Diffstat (limited to 'external/jaxp/source/gnu/xml/dom/DomAttr.java')
| -rw-r--r-- | external/jaxp/source/gnu/xml/dom/DomAttr.java | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/external/jaxp/source/gnu/xml/dom/DomAttr.java b/external/jaxp/source/gnu/xml/dom/DomAttr.java deleted file mode 100644 index 83361f982..000000000 --- a/external/jaxp/source/gnu/xml/dom/DomAttr.java +++ /dev/null @@ -1,263 +0,0 @@ -/* - * Copyright (C) 1999-2001 David Brownell - * - * This file is part of GNU JAXP, a library. - * - * GNU JAXP 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 of the License, or - * (at your option) any later version. - * - * GNU JAXP 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 this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * As a special exception, if you link this library with other files to - * produce an executable, this library does not by itself cause the - * resulting executable to be covered by the GNU General Public License. - * This exception does not however invalidate any other reasons why the - * executable file might be covered by the GNU General Public License. - */ - -package gnu.xml.dom; - -import org.w3c.dom.*; -import org.w3c.dom.events.MutationEvent; - - -/** - * <p> "Attr" implementation. In DOM, attributes cost quite a lot of - * memory because their values are complex structures rather than just - * simple strings. To reduce your costs, avoid having more than one - * child of an attribute; stick to a single Text node child, and ignore - * even that by using the attribute's "nodeValue" property.</p> - * - * <p> As a bit of general advice, only look at attribute modification - * events through the DOMAttrModified event (sent to the associated - * element). Implementations are not guaranteed to report other events - * in the same order, so you're very likely to write nonportable code if - * you monitor events at the "children of Attr" level.</p> - * - * <p> At this writing, not all attribute modifications will cause the - * DOMAttrModified event to be triggered ... only the ones using the string - * methods (setNodeValue, setValue, and Element.setAttribute) to modify - * those values. That is, if you manipulate those children directly, - * elements won't get notified that attribute values have changed. - * The natural fix for that will report other modifications, but won't - * be able to expose "previous" attribute value; it'll need to be cached - * or something (at which point why bother using child nodes). </p> - * - * <p><em>You are strongly advised not to use "children" of any attribute - * nodes you work with.</em> </p> - * - * @author David Brownell - */ -public class DomAttr extends DomNsNode implements Attr -{ - private boolean specified; - - // NOTE: it could be possible to rework this code a bit so that - // this extra field isn't needed; "parent" might do double duty, - // with appropriate safeguards. Using less space is healthy! - private DomElement element; - - - /** - * Constructs an Attr node associated with the specified document. - * The "specified" flag is initialized to true, since this DOM has - * no current "back door" mechanisms to manage default values so - * that every value must effectively be "specified". - * - * <p>This constructor should only be invoked by a Document as part of - * its createAttribute functionality, or through a subclass which is - * similarly used in a "Sub-DOM" style layer. - * - * @param owner The document with which this node is associated - * @param namespaceURI Combined with the local part of the name, - * this is used to uniquely identify a type of attribute - * @param name Name of this attribute, which may include a prefix - */ - protected DomAttr (Document owner, String namespaceURI, String name) - { - super (owner, namespaceURI, name); - specified = true; - - // XXX register self to get insertion/removal events - // and character data change events and when they happen, - // report self-mutation - } - - - /** - * <b>DOM L1</b> - * Returns the attribute name (same as getNodeName) - */ - final public String getName () - { - return getNodeName (); - } - - /** - * <b>DOM L1</b> - * Returns the constant ATTRIBUTE_NODE. - */ - final public short getNodeType () - { return ATTRIBUTE_NODE; } - - - /** - * <b>DOM L1</b> - * Returns true if a parser reported this was in the source text. - */ - final public boolean getSpecified () - { - return specified; - } - - - /** - * Records whether this attribute was in the source text. - */ - final public void setSpecified (boolean value) - { - specified = value; - } - - - /** - * <b>DOM L1</b> - * Returns the attribute value, with character and entity - * references substituted. - * <em>NOTE: entity refs as children aren't currently handled.</em> - */ - public String getNodeValue () - { - int length = getLength (); - String retval = null; - - for (int i = 0; i < length; i++) { - Node n = item (i); - - if (n.getNodeType () == TEXT_NODE) { - if (retval == null) - retval = n.getNodeValue (); - else - retval += n.getNodeValue (); - continue; - } - - // XXX entity ref child of attribute - // contents exclude comments, PIs, elements - throw new DomEx (DomEx.NOT_SUPPORTED_ERR); - } - if (retval == null) - retval = ""; - return retval; - } - - - /** - * <b>DOM L1</b> - * Assigns the value of the attribute; it will have one child, - * which is a text node with the specified value (same as - * setNodeValue). - */ - final public void setValue (String value) - { - setNodeValue (value); - } - - - /** - * <b>DOM L1</b> - * Returns the value of the attribute as a non-null string; same - * as getNodeValue. - * <em>NOTE: entity refs as children aren't currently handled.</em> - */ - final public String getValue () - { - return getNodeValue (); - } - - - /** - * <b>DOM L1</b> - * Assigns the attribute value; using this API, no entity or - * character references will exist. - * Causes a DOMAttrModified mutation event to be sent. - */ - public void setNodeValue (String value) - { - int len = getLength (); - String oldValue; - - if (isReadonly ()) - throw new DomEx (DomEx.NO_MODIFICATION_ALLOWED_ERR); - - oldValue = getValue (); - for (int i = 0; i < len; i++) - removeChild (getLastChild ()); - appendChild (getOwnerDocument ().createTextNode (value)); - specified = true; - - mutating (oldValue, value, MutationEvent.MODIFICATION); - } - - - /** - * <b>DOM L2</b> - * Returns the element with which this attribute is associated. - */ - final public Element getOwnerElement () - { - return element; - } - - - /** - * Records the element with which this attribute is associated. - */ - final public void setOwnerElement (Element e) - { - if (element != null) - throw new DomEx (DomEx.HIERARCHY_REQUEST_ERR); - if (!(e instanceof DomElement)) - throw new DomEx (DomEx.WRONG_DOCUMENT_ERR); - element = (DomElement) e; - } - - - /** - * Shallow clone of the attribute, breaking all ties with any - * elements. - */ - public Object clone () - { - DomAttr retval = (DomAttr) super.clone (); - - retval.element = null; - retval.specified = false; - return retval; - } - - private void mutating (String oldValue, String newValue, short why) - { - if (!reportMutations || element == null) - return; - - // EVENT: DOMAttrModified, target = element, - // prev/new values provided, also attr name - MutationEvent event; - - event = (MutationEvent) createEvent ("MutationEvents"); - event.initMutationEvent ("DOMAttrModified", - true /* bubbles */, false /* nocancel */, - null, oldValue, newValue, getNodeName (), why); - element.dispatchEvent (event); - } -} |