The Tor Browser / file revision

 /* 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 "nsISupports.idl"

 interface nsIDOMCSSFontFaceRule;

 interface nsIDOMCSSStyleDeclaration;

 [scriptable, uuid(9a3b1272-6585-4f41-b08f-fdc5da444cd0)]

 interface nsIDOMFontFace : nsISupports

 {

   // An indication of how we found this font during font-matching.

   // Note that the same physical font may have been found in multiple ways within a range.

   readonly attribute boolean fromFontGroup;

   readonly attribute boolean fromLanguagePrefs;

   readonly attribute boolean fromSystemFallback;

   // available for all fonts

   readonly attribute DOMString name; // full font name as obtained from the font resource

   readonly attribute DOMString CSSFamilyName; // a family name that could be used in CSS font-family

                                               // (not necessarily the actual name that was used,

                                               // due to aliases, generics, localized names, etc)

   // meaningful only when the font is a user font defined using @font-face

   readonly attribute nsIDOMCSSFontFaceRule rule; // null if no associated @font-face rule

   readonly attribute long srcIndex; // index in the rule's src list, -1 if no @font-face rule

   readonly attribute DOMString URI; // null if not a downloaded font, i.e. local

   readonly attribute DOMString localName; // null if not a src:local(...) rule

   readonly attribute DOMString format; // as per http://www.w3.org/TR/css3-webfonts/#referencing

   readonly attribute DOMString metadata; // XML metadata from WOFF file (if any)

 };