gecko-dev/dom/interfaces/stylesheets/nsIDOMNSDocumentStyle.idl

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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 nsIDOMNSDocumentStyle interface definition.
*
* The Initial Developer of the Original Code is
* Boris Zbarsky <bzbarsky@mit.edu>
* Portions created by the Initial Developer are Copyright (C) 2003
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "domstubs.idl"
#include "nsIDOMDocumentStyle.idl"
/**
* The nsIDOMNSDocumentStyle interface is an extension to the
* nsIDOMDocumentStyle interface. This interface exposes more ways to interact
* with style sheets in the Document Object Model. This interface is currently
* very much experimental.
*
* NOTE: This interface represents the additions to nsIDOMDocumentStyle defined
* by <http://whatwg.org/specs/web-apps/current-work/#alternate-style-sheets>.
* The comments here describe our implementation; if those comments don't match
* that spec, file bugs.
*/
[scriptable, uuid(26311d10-7e24-4c7b-bb3d-17aad86f4d88)]
interface nsIDOMNSDocumentStyle : nsIDOMDocumentStyle
{
/**
* This attribute must return the preferred style sheet set as set by the
* author. It is determined from the order of style sheet declarations and
* the Default-Style HTTP headers, as eventually defined elsewhere in the Web
* Apps 1.0 specification. If there is no preferred style sheet set, this
* attribute must return the empty string. The case of this attribute must
* exactly match the case given by the author where the preferred style sheet
* is specified or implied. This attribute must never return null.
*/
readonly attribute DOMString preferredStyleSheetSet;
/**
* This attribute indicates which style sheet set is in use. This attribute
* is live; changing the disabled attribute on style sheets directly will
* change the value of this attribute.
*
* If all the sheets that are enabled and have a title have the same title
* (by case-sensitive comparisons) then the value of this attribute must be
* exactly equal to the title of the first enabled style sheet with a title
* in the styleSheets list. Otherwise, if style sheets from different sets
* are enabled, then the return value must be null (there is no way to
* determine what the currently selected style sheet set is in those
* conditions). Otherwise, either all style sheets that have a title are
* disabled, or there are no alternate style sheets, and
* selectedStyleSheetSet must return the empty string.
*
* Setting this attribute to the null value must have no effect.
*
* Setting this attribute to a non-null value must call
* enableStyleSheetsForSet() with that value as the function's argument, and
* set lastStyleSheetSet to that value.
*
* From the DOM's perspective, all views have the same
* selectedStyleSheetSet. If a UA supports multiple views with different
* selected alternate style sheets, then this attribute (and the StyleSheet
* interface's disabled attribute) must return and set the value for the
* default view.
*/
attribute DOMString selectedStyleSheetSet;
/*
* This property must initially have the value null. Its value changes when
* the selectedStyleSheetSet attribute is set.
*/
readonly attribute DOMString lastStyleSheetSet;
/**
* This must return the live list of the currently available style sheet
* sets. This list is constructed by enumerating all the style sheets for
* this document available to the implementation, in the order they are
* listed in the styleSheets attribute, adding the title of each style sheet
* with a title to the list, avoiding duplicates by dropping titles that
* match (case-sensitively) titles that have already been added to the
* list.
*/
readonly attribute nsIDOMDOMStringList styleSheetSets;
/**
* Calling this method must change the disabled attribute on each StyleSheet
* object with a title attribute with a length greater than 0 in the
* styleSheets attribute, so that all those whose title matches the name
* argument are enabled, and all others are disabled. Title matches must be
* case-sensitive. Calling this method with the empty string disables all
* alternate and preferred style sheets (but does not change the state of
* persistent style sheets, that is those with no title attribute).
*
* Calling this method with a null value must have no effect.
*
* Style sheets that do not have a title are never affected by this
* method. This method does not change the values of the lastStyleSheetSet or
* preferredStyleSheetSet attributes.
*/
void enableStyleSheetsForSet(in DOMString name);
};