gecko-dev/layout/style/ServoCSSParser.h
2017-11-26 13:00:58 +02:00

57 lines
1.9 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
/* CSS parsing utility functions */
#ifndef mozilla_ServoCSSParser_h
#define mozilla_ServoCSSParser_h
#include "mozilla/ServoBindings.h"
namespace mozilla {
class ServoCSSParser
{
public:
/**
* Returns whether the specified string can be parsed as a valid CSS
* <color> value.
*
* This includes Mozilla-specific keywords such as -moz-default-color.
*/
static bool IsValidCSSColor(const nsAString& aValue);
/**
* Computes an nscolor from the given CSS <color> value.
*
* @param aStyleSet The style set whose nsPresContext will be used to
* compute system colors and other special color values.
* @param aCurrentColor The color value that currentcolor should compute to.
* @param aValue The CSS <color> value.
* @param aResultColor The resulting computed color value.
* @return Whether aValue was successfully parsed and aResultColor was set.
*/
static bool ComputeColor(ServoStyleSet* aStyleSet,
nscolor aCurrentColor,
const nsAString& aValue,
nscolor* aResultColor);
/**
* Parses a IntersectionObserver's initialization dictionary's rootMargin
* property.
*
* @param aValue The rootMargin value.
* @param aResult The nsCSSRect object to write the result into.
* @return Whether the value was successfully parsed.
*/
static bool ParseIntersectionObserverRootMargin(const nsAString& aValue,
nsCSSRect* aResult);
};
} // namespace mozilla
#endif // mozilla_ServoCSSParser_h