/**
 * DataModel annotation for a link.
 *
 * @class
 * @constructor
 * @extends {ve.dm.Annotation}
 */
ve.dm.LinkAnnotation = function() {
	// Inheritance
	ve.dm.Annotation.call( this );
};

/* Static Members */

/**
 * Converters.
 *
 * @see {ve.dm.Converter}
 * @static
 * @member
 */
ve.dm.LinkAnnotation.converters = {
	'domElementTypes': ['a'],
	'toDomElement': function( subType, annotation ) {
		if ( annotation.type ) {
			var link = document.createElement( 'a' );
			link.setAttribute( 'data-type', 'link/' + subType );
			return link;
		}
	},
	'toDataAnnotation': function( tag, element ) {
		// FIXME: the parser currently doesn't output this data this way
		// Internal links get 'linkType': 'internal' in the data-mw-rt attrib, while external
		// links currently get nothing
		return { 'type': 'link/' + ( element.getAttribute( 'data-type' ) || 'unknown' ) };
	}
};

/* Registration */

ve.dm.annotationFactory.register( 'link', ve.dm.LinkAnnotation );

/* Inheritance */

ve.extendClass( ve.dm.LinkAnnotation, ve.dm.Annotation );