/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
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*/
package com.sun.xml.internal.stream.events ;
import java.util.List;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
import java.util.ArrayList;
import java.util.Collection;
import javax.xml.namespace.QName;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.Attribute;
import javax.xml.namespace.NamespaceContext;
import java.io.Writer;
import com.sun.xml.internal.stream.util.ReadOnlyIterator;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.events.Namespace;
/** Implementation of StartElementEvent.
*
* @author Neeraj Bajaj Sun Microsystems,Inc.
* @author K.Venugopal Sun Microsystems,Inc.
*/
public class StartElementEvent extends DummyEvent
implements StartElement {
private Map fAttributes;
private List fNamespaces;
private NamespaceContext fNamespaceContext = null;
private QName fQName;
public StartElementEvent(String prefix, String uri, String localpart) {
this(new QName(uri, localpart, prefix));
}
public StartElementEvent(QName qname) {
fQName = qname;
init();
}
public StartElementEvent(StartElement startelement) {
this(startelement.getName());
addAttributes(startelement.getAttributes());
addNamespaceAttributes(startelement.getNamespaces());
}
protected void init() {
setEventType(XMLStreamConstants.START_ELEMENT);
fAttributes = new HashMap();
fNamespaces = new ArrayList();
}
public QName getName() {
return fQName;
}
public void setName(QName qname) {
this.fQName = qname;
}
public Iterator getAttributes() {
if(fAttributes != null){
Collection coll = fAttributes.values();
return new ReadOnlyIterator(coll.iterator());
}
return new ReadOnlyIterator();
}
public Iterator getNamespaces() {
if(fNamespaces != null){
return new ReadOnlyIterator(fNamespaces.iterator());
}
return new ReadOnlyIterator();
}
public Attribute getAttributeByName(QName qname) {
if(qname == null)
return null;
return (Attribute)fAttributes.get(qname);
}
public String getNamespace(){
return fQName.getNamespaceURI();
}
public String getNamespaceURI(String prefix) {
//check that URI was supplied when creating this startElement event and prefix matches
if( getNamespace() != null && fQName.getPrefix().equals(prefix)) return getNamespace();
//else check the namespace context
if(fNamespaceContext != null)
return fNamespaceContext.getNamespaceURI(prefix);
return null;
}
/**
* <p>Return a <code>String</code> representation of this
* <code>StartElement</code> formatted as XML.</p>
*
* @return <code>String</code> representation of this
* <code>StartElement</code> formatted as XML.
*/
public String toString() {
StringBuffer startElement = new StringBuffer();
// open element
startElement.append("<");
startElement.append(nameAsString());
// add any attributes
if (fAttributes != null) {
Iterator it = this.getAttributes();
Attribute attr = null;
while (it.hasNext()) {
attr = (Attribute) it.next();
startElement.append(" ");
startElement.append(attr.toString());
}
}
// add any namespaces
if (fNamespaces != null) {
Iterator it = fNamespaces.iterator();
Namespace attr = null;
while (it.hasNext()) {
attr = (Namespace) it.next();
startElement.append(" ");
startElement.append(attr.toString());
}
}
// close start tag
startElement.append(">");
// return StartElement as a String
return startElement.toString();
}
/** Return this event as String
* @return String Event returned as string.
*/
public String nameAsString() {
if("".equals(fQName.getNamespaceURI()))
return fQName.getLocalPart();
if(fQName.getPrefix() != null)
return "['" + fQName.getNamespaceURI() + "']:" + fQName.getPrefix() + ":" + fQName.getLocalPart();
else
return "['" + fQName.getNamespaceURI() + "']:" + fQName.getLocalPart();
}
/** Gets a read-only namespace context. If no context is
* available this method will return an empty namespace context.
* The NamespaceContext contains information about all namespaces
* in scope for this StartElement.
*
* @return the current namespace context
*/
public NamespaceContext getNamespaceContext() {
return fNamespaceContext;
}
public void setNamespaceContext(NamespaceContext nc) {
fNamespaceContext = nc;
}
protected void writeAsEncodedUnicodeEx(java.io.Writer writer)
throws java.io.IOException
{
writer.write(toString());
}
void addAttribute(Attribute attr){
if(attr.isNamespace()){
fNamespaces.add(attr);
}else{
fAttributes.put(attr.getName(),attr);
}
}
void addAttributes(Iterator attrs){
if(attrs == null)
return;
while(attrs.hasNext()){
Attribute attr = (Attribute)attrs.next();
fAttributes.put(attr.getName(),attr);
}
}
void addNamespaceAttribute(Namespace attr){
if(attr == null)
return;
fNamespaces.add(attr);
}
void addNamespaceAttributes(Iterator attrs){
if(attrs == null)
return;
while(attrs.hasNext()){
Namespace attr = (Namespace)attrs.next();
fNamespaces.add(attr);
}
}
}