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package com.sun.xml.rpc.wsdl.framework;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.xml.namespace.QName;

import org.w3c.dom.Attr;
import org.w3c.dom.Element;

import com.sun.xml.rpc.sp.NamespaceSupport;
import com.sun.xml.rpc.util.xml.XmlUtil;

/**
 * The context used by parser classes.
 *
 * @author JAX-RPC Development Team
 */
public class ParserContext {

    private final static String PREFIX_XMLNS = "xmlns";

    public ParserContext(AbstractDocument doc, ArrayList listeners) {
        _document = doc;
        _listeners = listeners;
        _nsSupport = new NamespaceSupport();
        _wsdlLocation = new WSDLLocation();
    }

    public AbstractDocument getDocument() {
        return _document;
    }

    public boolean getFollowImports() {
        return _followImports;
    }

    public void setFollowImports(boolean b) {
        _followImports = b;
    }

    public void push() {
        _nsSupport.pushContext();
    }

    public void pop() {
        _nsSupport.popContext();
    }

    public String getNamespaceURI(String prefix) {
        return _nsSupport.getURI(prefix);
    }

    public Iterator getPrefixes() {
        return _nsSupport.getPrefixes();
    }

    public String getDefaultNamespaceURI() {
        return getNamespaceURI("");
    }

    public void registerNamespaces(Element e) {
        for (Iterator iter = XmlUtil.getAllAttributes(e); iter.hasNext();) {
            Attr a = (Attr) iter.next();
            if (a.getName().equals(PREFIX_XMLNS)) {
                // default namespace declaration
                _nsSupport.declarePrefix("", a.getValue());
            } else {
                String prefix = XmlUtil.getPrefix(a.getName());
                if (prefix != null && prefix.equals(PREFIX_XMLNS)) {
                    String nsPrefix = XmlUtil.getLocalPart(a.getName());
                    String uri = a.getValue();
                    _nsSupport.declarePrefix(nsPrefix, uri);
                }
            }
        }
    }

    public QName translateQualifiedName(String s) {
        if (s == null)
            return null;

        String prefix = XmlUtil.getPrefix(s);
        String uri = null;

        if (prefix == null) {
            uri = getDefaultNamespaceURI();
        } else {
            uri = getNamespaceURI(prefix);
            if (uri == null) {
                throw new ParseException(
                    "parsing.unknownNamespacePrefix",
                    prefix);
            }
        }

        return new QName(uri, XmlUtil.getLocalPart(s));
    }

    public void fireIgnoringExtension(QName name, QName parent) {
        List _targets = null;

        synchronized (this) {
            if (_listeners != null) {
                _targets = (List) _listeners.clone();
            }
        }

        if (_targets != null) {
            for (Iterator iter = _targets.iterator(); iter.hasNext();) {
                ParserListener l = (ParserListener) iter.next();
                l.ignoringExtension(name, parent);
            }
        }
    }

    public void fireDoneParsingEntity(QName element, Entity entity) {
        List _targets = null;

        synchronized (this) {
            if (_listeners != null) {
                _targets = (List) _listeners.clone();
            }
        }

        if (_targets != null) {
            for (Iterator iter = _targets.iterator(); iter.hasNext();) {
                ParserListener l = (ParserListener) iter.next();
                l.doneParsingEntity(element, entity);
            }
        }
    }

    //bug fix: 4856674, WSDLLocation context maintainence 
    //and utility funcitons
    public void pushWSDLLocation() {
        _wsdlLocation.push();
    }

    public void popWSDLLocation() {
        _wsdlLocation.pop();
    }

    public void setWSDLLocation(String loc) {
        _wsdlLocation.setLocation(loc);
    }

    public String getWSDLLocation() {
        return _wsdlLocation.getLocation();
    }

    private boolean _followImports;
    private AbstractDocument _document;
    private NamespaceSupport _nsSupport;
    private ArrayList _listeners;
    //bug fix:4856674
    private WSDLLocation _wsdlLocation;

}