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/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Robert Sayre.
 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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#include "nsISupports.idl"

interface nsIURI;
interface nsIDOMElement;
interface nsIDOMDocumentFragment;

/**
 * nsIFeedTextConstructs represent feed text fields that can contain
 * one of text, HTML, or XHTML. Some extension elements also have "type"
 * parameters, and this interface could be used there as well.
 */ 
[scriptable, uuid(fc97a2a9-d649-4494-931e-db81a156c873)]
interface nsIFeedTextConstruct : nsISupports 
{
  /**
   * If the text construct contains (X)HTML, relative references in
   * the content should be resolved against this base URI.
   */
  attribute nsIURI base;

  /**
   * The language of the text. For example, "en-US" for US English.
   */
  attribute AString lang;

  /**
   * One of "text", "html", or "xhtml". If the type is (x)html, a '<'
   * character represents markup. To display that character, an escape
   * such as &lt; must be used. If the type is "text", the '<'
   * character represents the character itself, and such text should
   * not be embedded in markup without escaping it first.
   */
  attribute AString type;

  /**
   * The content of the text construct.
   */
  attribute AString text;

  /**
   * Returns the text of the text construct, with all markup stripped 
   * and all entities decoded. If the type attribute's value is "text",
   * this function returns the value of the text attribute unchanged.
   */
  AString plainText();

  /**
   * Return an nsIDocumentFragment containing the text and markup.
   */
  nsIDOMDocumentFragment createDocumentFragment(in nsIDOMElement element);
};