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/*
* $Id: XMLObj.java,v 1.13 2003/03/05 21:48:02 jeremias Exp $
* ============================================================================
* The Apache Software License, Version 1.1
* ============================================================================
*
* Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by the Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "FOP" and "Apache Software Foundation" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache", nor may
* "Apache" appear in their name, without prior written permission of the
* Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
* DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ============================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the Apache Software Foundation and was originally created by
* James Tauber <jtauber@jtauber.com>. For more information on the Apache
* Software Foundation, please see <http://www.apache.org/>.
*/
package org.apache.fop.fo;
// Java
import java.awt.geom.Point2D;
import java.util.HashMap;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.Attributes;
import javax.xml.parsers.DocumentBuilderFactory;
// FOP
import org.apache.fop.apps.FOPException;
/**
* Generic XML object.
* This is used by xml objects (other than fo) than will build a DOM
* with each element.
*/
public abstract class XMLObj extends FONode {
// temp reference for attributes
private Attributes attr = null;
protected Element element;
protected Document doc;
/**
*
* @param parent the parent formatting object
* @param propertyList the explicit properties of this object
*/
public XMLObj(FONode parent) {
super(parent);
}
public void setName(String str) {
name = str;
}
public void handleAttrs(Attributes attlist) throws FOPException {
attr = attlist;
}
public Document getDocument() {
return doc;
}
public Point2D getDimension(Point2D view) {
return null;
}
public abstract String getNameSpace();
public String getDocumentNamespace() {
return getNameSpace();
}
protected static HashMap ns = new HashMap();
static {
ns.put("xlink", "http://www.w3.org/1999/xlink");
}
public void addElement(Document doc, Element parent) {
this.doc = doc;
element = doc.createElementNS(getNameSpace(), name);
for (int count = 0; count < attr.getLength(); count++) {
String rf = attr.getValue(count);
String qname = attr.getQName(count);
int idx = qname.indexOf(":");
if (idx == -1) {
element.setAttribute(qname, rf);
} else {
String pref = qname.substring(0, idx);
String tail = qname.substring(idx + 1);
if (pref.equals("xmlns")) {
ns.put(tail, rf);
} else {
element.setAttributeNS((String)ns.get(pref), tail, rf);
}
}
}
attr = null;
parent.appendChild(element);
}
public void buildTopLevel(Document doc, Element svgRoot) {
// build up the info for the top level element
for (int count = 0; count < attr.getLength(); count++) {
String rf = attr.getValue(count);
String qname = attr.getQName(count);
int idx = qname.indexOf(":");
if (idx == -1) {
element.setAttribute(qname, rf);
} else {
String pref = qname.substring(0, idx);
String tail = qname.substring(idx + 1);
if (pref.equals("xmlns")) {
ns.put(tail, rf);
} else {
element.setAttributeNS((String)ns.get(pref), tail, rf);
}
}
}
}
public Document createBasicDocument() {
doc = null;
element = null;
try {
DocumentBuilderFactory fact = DocumentBuilderFactory.newInstance();
fact.setNamespaceAware(true);
doc = fact.newDocumentBuilder().newDocument();
Element el = doc.createElement(name);
doc.appendChild(el);
element = doc.getDocumentElement();
buildTopLevel(doc, element);
} catch (Exception e) {
e.printStackTrace();
}
return doc;
}
protected void addChild(FONode child) {
if (child instanceof XMLObj) {
((XMLObj)child).addElement(doc, element);
} else {
// in theory someone might want to embed some defined
// xml (eg. fo) inside the foreign xml
// they could use a different namespace
getLogger().debug("Invalid element: " + child.getName() + " inside foreign xml markup");
}
}
protected void addCharacters(char data[], int start, int length) {
String str = new String(data, start, length - start);
org.w3c.dom.Text text = doc.createTextNode(str);
element.appendChild(text);
}
}
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