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/*

   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 */
package org.apache.batik.extension;

import org.apache.batik.anim.dom.SVGLocatableSupport;
import org.apache.batik.anim.dom.SVGOMAnimatedBoolean;
import org.apache.batik.anim.dom.SVGOMAnimatedTransformList;
import org.apache.batik.anim.dom.TraitInformation;
import org.apache.batik.dom.AbstractDocument;
import org.apache.batik.dom.svg.SVGTestsSupport;
import org.apache.batik.dom.util.XMLSupport;
import org.apache.batik.util.DoublyIndexedTable;
import org.apache.batik.util.SVGTypes;

import org.w3c.dom.svg.SVGAnimatedBoolean;
import org.w3c.dom.svg.SVGAnimatedTransformList;
import org.w3c.dom.svg.SVGElement;
import org.w3c.dom.svg.SVGException;
import org.w3c.dom.svg.SVGExternalResourcesRequired;
import org.w3c.dom.svg.SVGLangSpace;
import org.w3c.dom.svg.SVGLocatable;
import org.w3c.dom.svg.SVGMatrix;
import org.w3c.dom.svg.SVGRect;
import org.w3c.dom.svg.SVGStringList;
import org.w3c.dom.svg.SVGTests;
import org.w3c.dom.svg.SVGTransformable;

/**
 * An abstract base class for graphical extension elements.  This class
 * inherits {@link org.w3c.dom.svg.SVGStylable} functionality from {@link
 * StylableExtensionElement} and implements {@link SVGLocatable},
 * {@link SVGTransformable}, {@link SVGExternalResourcesRequired},
 * {@link SVGLangSpace} and {@link SVGTests}.
 *
 * @author Cameron McCormack
 * @version $Id: GraphicsExtensionElement.java 1808001 2017-09-11 09:51:29Z ssteiner $
 */
public abstract class GraphicsExtensionElement
        extends    StylableExtensionElement
        implements SVGTransformable {

    /**
     * Table mapping XML attribute names to TraitInformation objects.
     */
    protected static DoublyIndexedTable xmlTraitInformation;
    static {
        DoublyIndexedTable t =
            new DoublyIndexedTable(StylableExtensionElement.xmlTraitInformation);
        t.put(null, SVG_TRANSFORM_ATTRIBUTE,
                new TraitInformation(true, SVGTypes.TYPE_TRANSFORM_LIST));
        t.put(null, SVG_EXTERNAL_RESOURCES_REQUIRED_ATTRIBUTE,
                new TraitInformation(true, SVGTypes.TYPE_BOOLEAN));
        t.put(null, SVG_REQUIRED_EXTENSIONS_ATTRIBUTE,
                new TraitInformation(false, SVGTypes.TYPE_URI_LIST));
        t.put(null, SVG_REQUIRED_FEATURES_ATTRIBUTE,
                new TraitInformation(false, SVGTypes.TYPE_URI_LIST));
        t.put(null, SVG_SYSTEM_LANGUAGE_ATTRIBUTE,
                new TraitInformation(false, SVGTypes.TYPE_LANG_LIST));
        xmlTraitInformation = t;
    }

    /**
     * The 'transform' attribute value.
     */
    protected SVGOMAnimatedTransformList transform =
        createLiveAnimatedTransformList(null, SVG_TRANSFORM_ATTRIBUTE, "");

    /**
     * The 'externalResourcesRequired' attribute value.
     */
    protected SVGOMAnimatedBoolean externalResourcesRequired =
        createLiveAnimatedBoolean
            (null, SVG_EXTERNAL_RESOURCES_REQUIRED_ATTRIBUTE, false);

    /**
     * Creates a new GraphicsExtensionElement object.
     */
    protected GraphicsExtensionElement() {
    }

    /**
     * Creates a new GraphicsExtensionElement object.
     * @param name The element name, for validation purposes.
     * @param owner The owner document.
     */
    protected GraphicsExtensionElement(String name, AbstractDocument owner) {
        super(name, owner);
    }

    // SVGLocatable support /////////////////////////////////////////////

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGLocatable#getNearestViewportElement()}.
     */
    public SVGElement getNearestViewportElement() {
        return SVGLocatableSupport.getNearestViewportElement(this);
    }

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGLocatable#getFarthestViewportElement()}.
     */
    public SVGElement getFarthestViewportElement() {
        return SVGLocatableSupport.getFarthestViewportElement(this);
    }

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGLocatable#getBBox()}.
     */
    public SVGRect getBBox() {
        return SVGLocatableSupport.getBBox(this);
    }

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGLocatable#getCTM()}.
     */
    public SVGMatrix getCTM() {
        return SVGLocatableSupport.getCTM(this);
    }

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGLocatable#getScreenCTM()}.
     */
    public SVGMatrix getScreenCTM() {
        return SVGLocatableSupport.getScreenCTM(this);
    }

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGLocatable#getTransformToElement(SVGElement)}.
     */
    public SVGMatrix getTransformToElement(SVGElement element)
        throws SVGException {
        return SVGLocatableSupport.getTransformToElement(this, element);
    }

    // SVGTransformable support //////////////////////////////////////////////

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGTransformable#getTransform()}.
     */
    public SVGAnimatedTransformList getTransform() {
        return transform;
    }

    // SVGExternalResourcesRequired support /////////////////////////////

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGExternalResourcesRequired#getExternalResourcesRequired()}.
     */
    public SVGAnimatedBoolean getExternalResourcesRequired() {
        return externalResourcesRequired;
    }

    // SVGLangSpace support //////////////////////////////////////////////////

    /**
     * DOM: Returns the xml:lang attribute value.
     */
    public String getXMLlang() {
        return XMLSupport.getXMLLang(this);
    }

    /**
     * DOM: Sets the xml:lang attribute value.
     */
    public void setXMLlang(String lang) {
        setAttributeNS(XML_NAMESPACE_URI, XML_LANG_QNAME, lang);
    }

    /**
     * DOM: Returns the xml:space attribute value.
     */
    public String getXMLspace() {
        return XMLSupport.getXMLSpace(this);
    }

    /**
     * DOM: Sets the xml:space attribute value.
     */
    public void setXMLspace(String space) {
        setAttributeNS(XML_NAMESPACE_URI, XML_SPACE_QNAME, space);
    }

    // SVGTests support ///////////////////////////////////////////////////

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGTests#getRequiredFeatures()}.
     */
    public SVGStringList getRequiredFeatures() {
        return SVGTestsSupport.getRequiredFeatures(this);
    }

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGTests#getRequiredExtensions()}.
     */
    public SVGStringList getRequiredExtensions() {
        return SVGTestsSupport.getRequiredExtensions(this);
    }

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGTests#getSystemLanguage()}.
     */
    public SVGStringList getSystemLanguage() {
        return SVGTestsSupport.getSystemLanguage(this);
    }

    /**
     * DOM: Implements {@link
     * org.w3c.dom.svg.SVGTests#hasExtension(String)}.
     */
    public boolean hasExtension(String extension) {
        return SVGTestsSupport.hasExtension(this, extension);
    }
}




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