layout/style/CSSEnabledState.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 /*
   8  * enum for whether a CSS feature (property, pseudo-class, etc.) is
   9  * enabled in a specific context
  10  */
  11
  12 #ifndef mozilla_CSSEnabledState_h
  13 #define mozilla_CSSEnabledState_h
  14
  15 #include "mozilla/TypedEnumBits.h"
  16
  17 namespace mozilla {
  18
  19 enum class CSSEnabledState {
  20   // The default CSSEnabledState: only enable what's enabled for all
  21   // content, given the current values of preferences.
  22   ForAllContent = 0,
  23   // Enable features available in UA sheets.
  24   InUASheets = 0x01,
  25   // Enable features available in chrome code.
  26   InChrome = 0x02,
  27   // Special value to unconditionally enable everything. This implies
  28   // all the bits above, but is strictly more than just their OR-ed
  29   // union. This just skips any test so a feature will be enabled even
  30   // if it would have been disabled with all the bits above set.
  31   IgnoreEnabledState = 0xff
  32 };
  33
  34 MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(CSSEnabledState)
  35
  36 }  // namespace mozilla
  37
  38 #endif  // mozilla_CSSEnabledState_h