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package io.legaldocml.akn.element;

import com.google.common.collect.ImmutableMap;
import io.legaldocml.akn.AknObject;
import io.legaldocml.akn.attribute.LinkReq;
import io.legaldocml.akn.attribute.Target;
import io.legaldocml.akn.group.HTMLinline;
import io.legaldocml.akn.type.Uri;
import io.legaldocml.io.AttributeGetterSetter;
import io.legaldocml.io.XmlWriter;
import io.legaldocml.io.impl.Buffers;

import java.io.IOException;

import static io.legaldocml.akn.AknAttributes.HREF;
import static io.legaldocml.akn.AknAttributes.TARGET;
import static io.legaldocml.akn.AknElements.A;
import static io.legaldocml.akn.element.Attributes.attributeGetterSetter4String;
import static io.legaldocml.akn.element.Attributes.attributeGetterSetter4Uri;
import static io.legaldocml.akn.util.XmlWriterHelper.writeLinkReq;
import static io.legaldocml.akn.util.XmlWriterHelper.writeTarget;
import static io.legaldocml.unsafe.UnsafeHelper.getFieldOffset;

/**
 * The element a is an HTML element and is used in Akoma Ntoso as in HTML, for the generic link to a web resource (NOT
 * to an Akoma Ntoso document: use ref for that). It is an inline.
 *  *   
 * 	   
 * 	     
 * 		   
 * 		     
 * 			 
 * 		   
 * 	     
 * 	   
 *   
 * 
 *
 * @author Jacques Militello
 */
public final class A extends InlineType implements HTMLinline, LinkReq, Target {

    /**
     * Memory address.
     */
    private static final long ADDRESS_A = Buffers.address(A);

    private static final ImmutableMap> ATTRIBUTES;

    static {
        ATTRIBUTES = ImmutableMap.>builder()
                .putAll(InlineType.ATTRIBUTES)
                .put(TARGET, attributeGetterSetter4String(TARGET, getFieldOffset(A.class, "target")))
                .put(HREF, attributeGetterSetter4Uri(HREF, getFieldOffset(A.class, "href")))
                .build();
    }

    // Mandatory
    private Uri href;

    // Optional
    private String target;

    /**
     * {@inheritDoc}
     */
    @Override
    public Uri getHref() {
        return this.href;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void setHref(Uri href) {
        this.href = href;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String getTarget() {
        return this.target;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void setTarget(String target) {
        this.target = target;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void write(XmlWriter writer) throws IOException {
        writer.writeStart(ADDRESS_A, 1);
        writeLinkReq(writer, this);
        writeTarget(writer, this);
        super.write(writer);
        writer.writeEnd(ADDRESS_A, 1);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public ImmutableMap> attributes() {
        return ATTRIBUTES;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String name() {
        return A;
    }

}