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35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_gfx_Preferences_h
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#define mozilla_gfx_Preferences_h
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namespace mozilla {
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namespace gfx {
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class PreferenceAccess
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{
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public:
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virtual ~PreferenceAccess() {};
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// This will be called with the derived class, so we will can register the
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// callbacks with it.
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static void SetAccess(PreferenceAccess* aAccess);
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static int32_t RegisterLivePref(const char* aName, int32_t* aVar,
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int32_t aDefault);
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protected:
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// This should connect the variable aVar to be updated whenever a preference
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// aName is modified. aDefault would be used if the preference is undefined,
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// so that we always get the valid value for aVar.
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virtual void LivePref(const char* aName, int32_t* aVar, int32_t aDefault) = 0;
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};
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} // namespace gfx
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} // namespace mozilla
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#endif // mozilla_gfx_Preferences_h
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