/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsIFeedElementBase.idl"

interface nsIURI;
interface nsIWritablePropertyBag2;
interface nsIArray;
interface nsIFeedTextConstruct;

/**
 * A shared base for feeds and items, which are pretty similar,
 * but they have some divergent attributes and require
 * different convenience methods.
 */ 
[scriptable, uuid(577a1b4c-b3d4-4c76-9cf8-753e6606114f)]
interface nsIFeedContainer : nsIFeedElementBase
{
	/**
	* Many feeds contain an ID distinct from their URI, and
	* entries have standard fields for this in all major formats.
	*/
	attribute AString id;

	/**
	* The fields found in the document. Common Atom
	* and RSS fields are normalized. This includes some namespaced
	* extensions such as dc:subject and content:encoded. 
	* Consumers can avoid normalization by checking the feed type
	* and accessing specific fields.
	*
	* Common namespaces are accessed using prefixes, like get("dc:subject");.
	*/
	attribute nsIWritablePropertyBag2 fields;

	/**
	 * Sometimes there's no title, or the title contains markup, so take
	 * care in decoding the attribute.
	 */
	attribute nsIFeedTextConstruct title;

	/**
	* Returns the primary link for the feed or entry.
	*/
	attribute nsIURI link;

	/**
	* Returns all links for a feed or entry.
	*/
	attribute nsIArray links;

	/**
	* Returns the categories found in a feed or entry.
	*/
	attribute nsIArray categories;

	/**
	 * The rights or license associated with a feed or entry.
	 */
	attribute nsIFeedTextConstruct rights;

	/**
	 * A list of nsIFeedPersons that authored the feed.
	 */
	attribute nsIArray authors;

	/**
	 * A list of nsIFeedPersons that contributed to the feed.
	 */
	attribute nsIArray contributors;

	/**
	 * The date the feed was updated, in RFC822 form. Parsable by JS
	 * and mail code.
	 */
	attribute AString updated;

	/**
	* Syncs a container's fields with its convenience attributes.
	*/
	void normalize();
};