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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2002-2007, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.xml
/** Unprefixed attributes have the null namespace, and no prefix field
*
* @author Burak Emir
*/
class UnprefixedAttribute(val key: String, val value: Seq[Node], next1: MetaData) extends MetaData {
val next = if (value ne null) next1 else next1.remove(key)
/** same as this(key, Text(value), next) */
def this(key: String, value: String, next: MetaData) =
this(key, if (value ne null) Text(value) else {val z:NodeSeq=null;z}, next)
/** same as this(key, Text(value.get), next), or no attribute if value is None */
def this(key: String, value: Option[Seq[Node]], next: MetaData) =
this(key, if (!value.isEmpty) value.get else {val z:NodeSeq=null;z}, next)
/** returns a copy of this unprefixed attribute with the given next field*/
def copy(next: MetaData) =
new UnprefixedAttribute(key, value, next)
def equals1(m: MetaData) =
!m.isPrefixed && (m.key == key) && (m.value sameElements value)
/** returns null */
final def getNamespace(owner: Node): String =
null
/**
* Gets value of unqualified (unprefixed) attribute with given key, null if not found
*
* @param key
* @return value as Seq[Node] if key is found, null otherwise
*/
def apply(key: String): Seq[Node] =
if (key == this.key) value else next(key)
/**
* Forwards the call to next (because caller looks for prefixed attribute).
*
* @param namespace
* @param scope
* @param key
* @return ..
*/
def apply(namespace: String, scope: NamespaceBinding, key: String): Seq[Node] =
next(namespace, scope, key)
/** returns the hashcode.
*/
override def hashCode() =
key.hashCode() * 7 + { if(value ne null) value.hashCode() * 53 else 0 } + next.hashCode()
/** returns false */
final def isPrefixed = false
/** appends string representation of only this attribute to stringbuffer.
*
* @param sb ..
*/
def toString1(sb: StringBuilder): Unit = if (value ne null) {
sb.append(key)
sb.append('=')
val sb2 = new StringBuilder()
for (c <- value) Utility.toXML(c, TopScope, sb2, true)
Utility.appendQuoted(sb2.toString(), sb)
}
def wellformed(scope: NamespaceBinding): Boolean =
(null == next(null, scope, key)) && next.wellformed(scope)
def remove(key: String) =
if (this.key == key) next else copy(next.remove(key))
def remove(namespace: String, scope: NamespaceBinding, key: String): MetaData =
next.remove(namespace, scope, key)
}
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