/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * 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/. */

/**
 * The nsIMarkupDocumentViewer
 * This interface describes the properties of a content viewer 
 * for a markup document - HTML or XML
 */

#include "nsISupports.idl"

interface nsIDOMNode;

%{C++
template<class T> class nsCOMPtr;
template<class T> class nsTArray;
%}

interface nsIMarkupDocumentViewer;

[ref] native nsIMarkupDocumentViewerTArray(nsTArray<nsCOMPtr<nsIMarkupDocumentViewer> >);

[scriptable, uuid(6acfadef-22ee-4924-be6c-776e8def6e1b)]
interface nsIMarkupDocumentViewer : nsISupports
{

	/*
	Scrolls to a given DOM content node. 
	*/
	void scrollToNode(in nsIDOMNode node);

	/** The amount by which to scale all text. Default is 1.0. */
	attribute float textZoom;

	/** The amount by which to scale all lengths. Default is 1.0. */
	attribute float fullZoom;

	/** Disable entire author style level (including HTML presentation hints) */
	attribute boolean authorStyleDisabled;

	/**
	 * XXX comm-central only: bug 829543. Not the Character Encoding menu in 
     * browser!
	 */
	attribute ACString forceCharacterSet;

	/**
	 * XXX comm-central only: bug 829543.
	 */
	attribute ACString hintCharacterSet;

	/**
	 * XXX comm-central only: bug 829543.
	 */
	attribute int32_t hintCharacterSetSource;

	//void GetCharacterSetHint(in wstring hintCharset, in int32_t charsetSource);

  /**
   * Requests the size of the content to the container.
   */
  void getContentSize(out long width, out long height);

  /**
   * Options for Bidi presentation.
   *
   * Use these attributes to access the individual Bidi options.
   */

  /**
   * bidiTextDirection: the default direction for the layout of bidirectional text.
   *                    1 - left to right
   *                    2 - right to left
   */
  attribute octet bidiTextDirection;
  
  /**
   * bidiTextType: the ordering of bidirectional text. This may be either "logical"
   * or "visual". Logical text will be reordered for presentation using the Unicode
   * Bidi Algorithm. Visual text will be displayed without reordering. 
   *               1 - the default order for the charset
   *               2 - logical order
   *               3 - visual order
   */
  attribute octet bidiTextType;

  /**
   * bidiNumeral: the type of numerals to display. 
   *              1 - depending on context, default is Arabic numerals
   *              2 - depending on context, default is Hindi numerals
   *              3 - Arabic numerals
   *              4 - Hindi numerals
   */
  attribute octet bidiNumeral;

  /**
   * bidiSupport: whether to use platform bidi support or Mozilla's bidi support
   *              1 - Use Mozilla's bidi support
   *              2 - Use the platform bidi support
   *              3 - Disable bidi support
   */
  attribute octet bidiSupport;

  /**
   * Use this attribute to access all the Bidi options in one operation
   */
  attribute uint32_t bidiOptions;

  /** The minimum font size  */
  attribute long minFontSize;

  /**
   * Append |this| and all of its descendants to the given array,
   * in depth-first pre-order traversal.
   */
  [noscript] void appendSubtree(in nsIMarkupDocumentViewerTArray array);

  /**
   * Set the maximum line width for the document.
   * NOTE: This will generate a reflow!
   *
   * @param maxLineWidth The maximum width of any line boxes on the page,
   *        in CSS pixels.
   */
  void changeMaxLineBoxWidth(in int32_t maxLineBoxWidth);

  /*
   * Render the document as if being viewed on a device with the specified
   * media type. This will cause a reflow.
   *
   * @param mediaType The media type to be emulated
   */
  void emulateMedium(in AString aMediaType);

  /*
   * Restore the viewer's natural media type
   */
  void stopEmulatingMedium();
};
