/*

   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.dom.svg;

import org.apache.batik.dom.AbstractDocument;
import org.apache.batik.dom.util.XLinkSupport;
import org.apache.batik.dom.util.XMLSupport;
import org.apache.batik.util.DoublyIndexedTable;
import org.apache.batik.util.SVGTypes;

import org.w3c.dom.Node;
import org.w3c.dom.svg.SVGAnimatedLength;
import org.w3c.dom.svg.SVGAnimatedPreserveAspectRatio;
import org.w3c.dom.svg.SVGImageElement;

/**
 * This class implements {@link SVGImageElement}.
 *
 * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
 * @version $Id$
 */
public class SVGOMImageElement
    extends    SVGURIReferenceGraphicsElement
    implements SVGImageElement {

    /**
     * Table mapping XML attribute names to TraitInformation objects.
     */
    protected static DoublyIndexedTable xmlTraitInformation;
    static {
        DoublyIndexedTable t =
            new DoublyIndexedTable(SVGURIReferenceGraphicsElement.xmlTraitInformation);
        t.put(null, SVG_X_ATTRIBUTE,
                new TraitInformation(true, SVGTypes.TYPE_LENGTH, PERCENTAGE_VIEWPORT_WIDTH));
        t.put(null, SVG_Y_ATTRIBUTE,
                new TraitInformation(true, SVGTypes.TYPE_LENGTH, PERCENTAGE_VIEWPORT_HEIGHT));
        t.put(null, SVG_WIDTH_ATTRIBUTE,
                new TraitInformation(true, SVGTypes.TYPE_LENGTH, PERCENTAGE_VIEWPORT_WIDTH));
        t.put(null, SVG_HEIGHT_ATTRIBUTE,
                new TraitInformation(true, SVGTypes.TYPE_LENGTH, PERCENTAGE_VIEWPORT_HEIGHT));
        xmlTraitInformation = t;
    }

    /**
     * The attribute initializer.
     */
    protected static final AttributeInitializer attributeInitializer;
    static {
        attributeInitializer = new AttributeInitializer(5);
        attributeInitializer.addAttribute(null, null,
                                          SVG_PRESERVE_ASPECT_RATIO_ATTRIBUTE,
                                          "xMidYMid meet");
        attributeInitializer.addAttribute(XMLSupport.XMLNS_NAMESPACE_URI,
                                          null, "xmlns:xlink",
                                          XLinkSupport.XLINK_NAMESPACE_URI);
        attributeInitializer.addAttribute(XLinkSupport.XLINK_NAMESPACE_URI,
                                          "xlink", "type", "simple");
        attributeInitializer.addAttribute(XLinkSupport.XLINK_NAMESPACE_URI,
                                          "xlink", "show", "embed");
        attributeInitializer.addAttribute(XLinkSupport.XLINK_NAMESPACE_URI,
                                          "xlink", "actuate", "onLoad");
    }

    /**
     * The 'x' attribute value.
     */
    protected SVGOMAnimatedLength x;

    /**
     * The 'y' attribute value.
     */
    protected SVGOMAnimatedLength y;

    /**
     * The 'width' attribute value.
     */
    protected SVGOMAnimatedLength width;

    /**
     * The 'height' attribute value.
     */
    protected SVGOMAnimatedLength height;

    /**
     * The 'preserveAspectRatio' attribute value.
     */
    protected SVGOMAnimatedPreserveAspectRatio preserveAspectRatio;

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

    /**
     * Creates a new SVGOMImageElement object.
     * @param prefix The namespace prefix.
     * @param owner The owner document.
     */
    public SVGOMImageElement(String prefix, AbstractDocument owner) {
        super(prefix, owner);
        initializeLiveAttributes();
    }

    /**
     * Initializes all live attributes for this element.
     */
    protected void initializeAllLiveAttributes() {
        super.initializeAllLiveAttributes();
        initializeLiveAttributes();
    }

    /**
     * Initializes the live attribute values of this element.
     */
    private void initializeLiveAttributes() {
        x = createLiveAnimatedLength
            (null, SVG_X_ATTRIBUTE, SVG_IMAGE_X_DEFAULT_VALUE,
             SVGOMAnimatedLength.HORIZONTAL_LENGTH, false);
        y = createLiveAnimatedLength
            (null, SVG_Y_ATTRIBUTE, SVG_IMAGE_Y_DEFAULT_VALUE,
             SVGOMAnimatedLength.VERTICAL_LENGTH, false);
        width =
            createLiveAnimatedLength
                (null, SVG_WIDTH_ATTRIBUTE, null,
                 SVGOMAnimatedLength.HORIZONTAL_LENGTH, true);
        height =
            createLiveAnimatedLength
                (null, SVG_HEIGHT_ATTRIBUTE, null,
                 SVGOMAnimatedLength.VERTICAL_LENGTH, true);
        preserveAspectRatio = createLiveAnimatedPreserveAspectRatio();
    }

    /**
     * <b>DOM</b>: Implements {@link Node#getLocalName()}.
     */
    public String getLocalName() {
        return SVG_IMAGE_TAG;
    }

    /**
     * <b>DOM</b>: Implements {@link SVGImageElement#getX()}.
     */
    public SVGAnimatedLength getX() {
        return x;
    }

    /**
     * <b>DOM</b>: Implements {@link SVGImageElement#getY()}.
     */
    public SVGAnimatedLength getY() {
        return y;
    }

    /**
     * <b>DOM</b>: Implements {@link SVGImageElement#getWidth()}.
     */
    public SVGAnimatedLength getWidth() {
        return width;
    }

    /**
     * <b>DOM</b>: Implements {@link SVGImageElement#getHeight()}.
     */
    public SVGAnimatedLength getHeight() {
        return height;
    }

    /**
     * <b>DOM</b>: Implements {@link SVGImageElement#getPreserveAspectRatio()}.
     */
    public SVGAnimatedPreserveAspectRatio getPreserveAspectRatio() {
        return preserveAspectRatio;
    }

    /**
     * Returns the AttributeInitializer for this element type.
     * @return null if this element has no attribute with a default value.
     */
    protected AttributeInitializer getAttributeInitializer() {
        return attributeInitializer;
    }

    /**
     * Returns a new uninitialized instance of this object's class.
     */
    protected Node newNode() {
        return new SVGOMImageElement();
    }

    /**
     * Returns the table of TraitInformation objects for this element.
     */
    protected DoublyIndexedTable getTraitInformationTable() {
        return xmlTraitInformation;
    }
}