43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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_css_SheetParsingMode_h
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#define mozilla_css_SheetParsingMode_h
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namespace mozilla {
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namespace css {
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/**
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* Enum defining the mode in which a sheet is to be parsed. This is
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* usually, but not always, the same as the cascade level at which the
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* sheet will apply (see nsStyleSet.h). Most of the Loader APIs only
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* support loading of author sheets.
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*
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* Author sheets are the normal case: styles embedded in or linked
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* from HTML pages. They are also the most restricted.
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*
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* User sheets can do anything author sheets can do, and also get
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* access to a few CSS extensions that are not yet suitable for
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* exposure on the public Web, but are very useful for expressing
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* user style overrides, such as @-moz-document rules.
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*
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* Agent sheets have access to all author- and user-sheet features
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* plus more extensions that are necessary for internal use but,
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* again, not yet suitable for exposure on the public Web. Some of
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* these are outright unsafe to expose; in particular, incorrect
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* styling of anonymous box pseudo-elements can violate layout
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* invariants.
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*/
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enum SheetParsingMode {
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eAuthorSheetFeatures = 0,
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eUserSheetFeatures,
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eAgentSheetFeatures
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};
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} // namespace css
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} // namespace mozilla
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#endif // mozilla_css_SheetParsingMode_h
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