зеркало из https://github.com/mozilla/gecko-dev.git
896 строки
40 KiB
C++
896 строки
40 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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/*
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* methods for dealing with CSS properties and tables of the keyword
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* values they accept
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*/
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#ifndef nsCSSProps_h___
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#define nsCSSProps_h___
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#include <limits>
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#include <type_traits>
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#include "nsString.h"
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#include "nsCSSPropertyID.h"
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#include "nsStyleStructFwd.h"
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#include "nsCSSKeywords.h"
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#include "mozilla/CSSEnabledState.h"
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#include "mozilla/UseCounter.h"
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#include "mozilla/EnumTypeTraits.h"
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#include "mozilla/Preferences.h"
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#include "nsXULAppAPI.h"
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// Length of the "--" prefix on custom names (such as custom property names,
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// and, in the future, custom media query names).
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#define CSS_CUSTOM_NAME_PREFIX_LENGTH 2
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// Flags for ParseVariant method
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#define VARIANT_KEYWORD 0x000001 // K
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#define VARIANT_LENGTH 0x000002 // L
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#define VARIANT_PERCENT 0x000004 // P
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#define VARIANT_COLOR 0x000008 // C eCSSUnit_*Color, eCSSUnit_Ident (e.g. "red")
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#define VARIANT_URL 0x000010 // U
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#define VARIANT_NUMBER 0x000020 // N
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#define VARIANT_INTEGER 0x000040 // I
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#define VARIANT_ANGLE 0x000080 // G
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#define VARIANT_FREQUENCY 0x000100 // F
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#define VARIANT_TIME 0x000200 // T
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#define VARIANT_STRING 0x000400 // S
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#define VARIANT_COUNTER 0x000800 //
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#define VARIANT_ATTR 0x001000 //
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#define VARIANT_IDENTIFIER 0x002000 // D
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#define VARIANT_IDENTIFIER_NO_INHERIT 0x004000 // like above, but excluding
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// 'inherit' and 'initial'
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#define VARIANT_AUTO 0x010000 // A
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#define VARIANT_INHERIT 0x020000 // H eCSSUnit_Initial, eCSSUnit_Inherit, eCSSUnit_Unset
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#define VARIANT_NONE 0x040000 // O
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#define VARIANT_NORMAL 0x080000 // M
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#define VARIANT_SYSFONT 0x100000 // eCSSUnit_System_Font
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#define VARIANT_GRADIENT 0x200000 // eCSSUnit_Gradient
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#define VARIANT_TIMING_FUNCTION 0x400000 // cubic-bezier() and steps()
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#define VARIANT_ALL 0x800000 //
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#define VARIANT_IMAGE_RECT 0x01000000 // eCSSUnit_Function
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// This is an extra bit that says that a VARIANT_ANGLE allows unitless zero:
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#define VARIANT_ZERO_ANGLE 0x02000000 // unitless zero for angles
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#define VARIANT_CALC 0x04000000 // eCSSUnit_Calc
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#define VARIANT_ELEMENT 0x08000000 // eCSSUnit_Element
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#define VARIANT_NONNEGATIVE_DIMENSION 0x10000000 // Only lengths greater than or equal to 0.0
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// Keyword used iff gfx.font_rendering.opentype_svg.enabled is true:
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#define VARIANT_OPENTYPE_SVG_KEYWORD 0x20000000
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#define VARIANT_ABSOLUTE_DIMENSION 0x40000000 // B Only lengths with absolute length unit
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// Variants that can consume more than one token
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#define VARIANT_MULTIPLE_TOKENS \
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(VARIANT_COLOR | /* rgb(...), hsl(...), etc. */ \
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VARIANT_COUNTER | /* counter(...), counters(...) */ \
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VARIANT_ATTR | /* attr(...) */ \
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VARIANT_GRADIENT | /* linear-gradient(...), etc. */ \
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VARIANT_TIMING_FUNCTION | /* cubic-bezier(...), steps(...) */ \
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VARIANT_IMAGE_RECT | /* -moz-image-rect(...) */ \
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VARIANT_CALC | /* calc(...) */ \
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VARIANT_ELEMENT) /* -moz-element(...) */
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// Common combinations of variants
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#define VARIANT_AL (VARIANT_AUTO | VARIANT_LENGTH)
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#define VARIANT_LP (VARIANT_LENGTH | VARIANT_PERCENT)
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#define VARIANT_LN (VARIANT_LENGTH | VARIANT_NUMBER)
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#define VARIANT_AH (VARIANT_AUTO | VARIANT_INHERIT)
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#define VARIANT_AHLP (VARIANT_AH | VARIANT_LP)
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#define VARIANT_AHI (VARIANT_AH | VARIANT_INTEGER)
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#define VARIANT_AHK (VARIANT_AH | VARIANT_KEYWORD)
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#define VARIANT_AHKLP (VARIANT_AHLP | VARIANT_KEYWORD)
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#define VARIANT_AHL (VARIANT_AH | VARIANT_LENGTH)
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#define VARIANT_AHKL (VARIANT_AHK | VARIANT_LENGTH)
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#define VARIANT_HK (VARIANT_INHERIT | VARIANT_KEYWORD)
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#define VARIANT_HKF (VARIANT_HK | VARIANT_FREQUENCY)
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#define VARIANT_HKI (VARIANT_HK | VARIANT_INTEGER)
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#define VARIANT_HKL (VARIANT_HK | VARIANT_LENGTH)
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#define VARIANT_HKLP (VARIANT_HK | VARIANT_LP)
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#define VARIANT_HKLPO (VARIANT_HKLP | VARIANT_NONE)
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#define VARIANT_HL (VARIANT_INHERIT | VARIANT_LENGTH)
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#define VARIANT_HI (VARIANT_INHERIT | VARIANT_INTEGER)
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#define VARIANT_HLP (VARIANT_HL | VARIANT_PERCENT)
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#define VARIANT_HLPN (VARIANT_HLP | VARIANT_NUMBER)
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#define VARIANT_HLPO (VARIANT_HLP | VARIANT_NONE)
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#define VARIANT_HTP (VARIANT_INHERIT | VARIANT_TIME | VARIANT_PERCENT)
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#define VARIANT_HMK (VARIANT_HK | VARIANT_NORMAL)
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#define VARIANT_HC (VARIANT_INHERIT | VARIANT_COLOR)
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#define VARIANT_HCK (VARIANT_HK | VARIANT_COLOR)
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#define VARIANT_HUK (VARIANT_HK | VARIANT_URL)
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#define VARIANT_HUO (VARIANT_INHERIT | VARIANT_URL | VARIANT_NONE)
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#define VARIANT_AHUO (VARIANT_AUTO | VARIANT_HUO)
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#define VARIANT_HPN (VARIANT_INHERIT | VARIANT_PERCENT | VARIANT_NUMBER)
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#define VARIANT_PN (VARIANT_PERCENT | VARIANT_NUMBER)
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#define VARIANT_ALPN (VARIANT_AL | VARIANT_PN)
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#define VARIANT_HN (VARIANT_INHERIT | VARIANT_NUMBER)
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#define VARIANT_HON (VARIANT_HN | VARIANT_NONE)
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#define VARIANT_HOS (VARIANT_INHERIT | VARIANT_NONE | VARIANT_STRING)
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#define VARIANT_LPN (VARIANT_LP | VARIANT_NUMBER)
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#define VARIANT_UK (VARIANT_URL | VARIANT_KEYWORD)
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#define VARIANT_UO (VARIANT_URL | VARIANT_NONE)
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#define VARIANT_ANGLE_OR_ZERO (VARIANT_ANGLE | VARIANT_ZERO_ANGLE)
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#define VARIANT_LB (VARIANT_LENGTH | VARIANT_ABSOLUTE_DIMENSION)
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#define VARIANT_LBCALC (VARIANT_LB | VARIANT_CALC)
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#define VARIANT_LCALC (VARIANT_LENGTH | VARIANT_CALC)
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#define VARIANT_LPCALC (VARIANT_LCALC | VARIANT_PERCENT)
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#define VARIANT_LNCALC (VARIANT_LCALC | VARIANT_NUMBER)
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#define VARIANT_LPNCALC (VARIANT_LNCALC | VARIANT_PERCENT)
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#define VARIANT_IMAGE (VARIANT_URL | VARIANT_NONE | VARIANT_GRADIENT | \
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VARIANT_IMAGE_RECT | VARIANT_ELEMENT)
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// Flags for the kFlagsTable bitfield (flags_ in nsCSSPropList.h)
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// This property is a logical property (such as padding-inline-start).
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#define CSS_PROPERTY_LOGICAL (1<<0)
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#define CSS_PROPERTY_VALUE_LIST_USES_COMMAS (1<<1) /* otherwise spaces */
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#define CSS_PROPERTY_APPLIES_TO_FIRST_LETTER (1<<2)
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#define CSS_PROPERTY_APPLIES_TO_FIRST_LINE (1<<3)
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#define CSS_PROPERTY_APPLIES_TO_FIRST_LETTER_AND_FIRST_LINE \
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(CSS_PROPERTY_APPLIES_TO_FIRST_LETTER | CSS_PROPERTY_APPLIES_TO_FIRST_LINE)
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// Note that 'background-color' is ignored differently from the other
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// properties that have this set, but that's just special-cased.
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#define CSS_PROPERTY_IGNORED_WHEN_COLORS_DISABLED (1<<4)
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// A property that needs to have image loads started when a URL value
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// for the property is used for an element. This is supported only
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// for a few possible value formats: image directly in the value; list
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// of images; and with CSS_PROPERTY_IMAGE_IS_IN_ARRAY_0, image in slot
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// 0 of an array, or list of such arrays.
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#define CSS_PROPERTY_START_IMAGE_LOADS (1<<5)
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// Should be set only for properties with START_IMAGE_LOADS. Indicates
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// that the property has an array value with a URL/image value at index
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// 0 in the array, rather than the URL/image being in the value or value
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// list.
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#define CSS_PROPERTY_IMAGE_IS_IN_ARRAY_0 (1<<6)
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// This is a logical property that represents some value associated with
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// a logical axis rather than a logical box side, and thus has two
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// corresponding physical properties it could set rather than four. For
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// example, the block-size logical property has this flag set, as it
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// represents the size in either the block or inline axis dimensions, and
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// has two corresponding physical properties, width and height. Must not
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// be used in conjunction with CSS_PROPERTY_LOGICAL_END_EDGE.
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#define CSS_PROPERTY_LOGICAL_AXIS (1<<7)
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// This property allows calc() between lengths and percentages and
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// stores such calc() expressions in its style structs (typically in an
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// nsStyleCoord, although this is not the case for 'background-position'
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// and 'background-size').
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#define CSS_PROPERTY_STORES_CALC (1<<8)
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// Define what mechanism the CSS parser uses for parsing the property.
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// See CSSParserImpl::ParseProperty(nsCSSPropertyID). Don't use 0 so that
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// we can verify that every property sets one of the values.
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//
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// CSS_PROPERTY_PARSE_FUNCTION must be used for shorthand properties,
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// since it's the only mechanism that allows appending values for
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// separate properties. Longhand properties that require custom parsing
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// functions should prefer using CSS_PROPERTY_PARSE_VALUE (or
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// CSS_PROPERTY_PARSE_VALUE_LIST) and
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// CSS_PROPERTY_VALUE_PARSER_FUNCTION, though a number of existing
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// longhand properties use CSS_PROPERTY_PARSE_FUNCTION instead.
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#define CSS_PROPERTY_PARSE_PROPERTY_MASK (7<<9)
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#define CSS_PROPERTY_PARSE_INACCESSIBLE (1<<9)
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#define CSS_PROPERTY_PARSE_FUNCTION (2<<9)
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#define CSS_PROPERTY_PARSE_VALUE (3<<9)
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#define CSS_PROPERTY_PARSE_VALUE_LIST (4<<9)
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// See CSSParserImpl::ParseSingleValueProperty and comment above
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// CSS_PROPERTY_PARSE_FUNCTION (which is different).
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#define CSS_PROPERTY_VALUE_PARSER_FUNCTION (1<<12)
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static_assert((CSS_PROPERTY_PARSE_PROPERTY_MASK &
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CSS_PROPERTY_VALUE_PARSER_FUNCTION) == 0,
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"didn't leave enough room for the parse property constants");
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#define CSS_PROPERTY_VALUE_RESTRICTION_MASK (3<<13)
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// The parser (in particular, CSSParserImpl::ParseSingleValueProperty)
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// should enforce that the value of this property must be 0 or larger.
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#define CSS_PROPERTY_VALUE_NONNEGATIVE (1<<13)
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// The parser (in particular, CSSParserImpl::ParseSingleValueProperty)
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// should enforce that the value of this property must be 1 or larger.
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#define CSS_PROPERTY_VALUE_AT_LEAST_ONE (2<<13)
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// Does this property support the hashless hex color quirk in quirks mode?
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#define CSS_PROPERTY_HASHLESS_COLOR_QUIRK (1<<15)
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// Does this property support the unitless length quirk in quirks mode?
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#define CSS_PROPERTY_UNITLESS_LENGTH_QUIRK (1<<16)
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// Is this property (which must be a shorthand) really an alias?
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#define CSS_PROPERTY_IS_ALIAS (1<<17)
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// Does the property apply to ::placeholder?
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#define CSS_PROPERTY_APPLIES_TO_PLACEHOLDER (1<<18)
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// This property is allowed in an @page rule.
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#define CSS_PROPERTY_APPLIES_TO_PAGE_RULE (1<<19)
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// This property's getComputedStyle implementation requires layout to be
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// flushed.
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#define CSS_PROPERTY_GETCS_NEEDS_LAYOUT_FLUSH (1<<20)
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// This property requires a stacking context.
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#define CSS_PROPERTY_CREATES_STACKING_CONTEXT (1<<21)
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// The following two flags along with the pref defines where the this
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// property can be used:
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// * If none of the two flags is presented, the pref completely controls
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// the availability of this property. And in that case, if it has no
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// pref, this property is usable everywhere.
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// * If any of the flags is set, this property is always enabled in the
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// specific contexts regardless of the value of the pref. If there is
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// no pref for this property at all in this case, it is an internal-
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// only property, which cannot be used anywhere else, and should be
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// wrapped in "#ifndef CSS_PROP_LIST_EXCLUDE_INTERNAL".
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// Note that, these flags have no effect on the use of aliases of this
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// property.
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// Furthermore, for the purposes of animation (including triggering
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// transitions) these flags are ignored. That is, if the property is disabled
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// by a pref, we will *not* run animations or transitions on it even in
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// UA sheets or chrome.
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#define CSS_PROPERTY_ENABLED_MASK (3<<22)
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#define CSS_PROPERTY_ENABLED_IN_UA_SHEETS (1<<22)
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#define CSS_PROPERTY_ENABLED_IN_CHROME (1<<23)
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#define CSS_PROPERTY_ENABLED_IN_UA_SHEETS_AND_CHROME \
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(CSS_PROPERTY_ENABLED_IN_UA_SHEETS | CSS_PROPERTY_ENABLED_IN_CHROME)
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// This property's unitless values are pixels.
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#define CSS_PROPERTY_NUMBERS_ARE_PIXELS (1<<24)
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// This property is a logical property for one of the two block axis
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// sides (such as margin-block-start or margin-block-end). Must only be
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// set if CSS_PROPERTY_LOGICAL is set. When not set, the logical
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// property is for one of the two inline axis sides (such as
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// margin-inline-start or margin-inline-end).
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#define CSS_PROPERTY_LOGICAL_BLOCK_AXIS (1<<25)
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// This property is a logical property for the "end" edge of the
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// axis determined by the presence or absence of
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// CSS_PROPERTY_LOGICAL_BLOCK_AXIS (such as margin-block-end or
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// margin-inline-end). Must only be set if CSS_PROPERTY_LOGICAL is set.
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// When not set, the logical property is for the "start" edge (such as
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// margin-block-start or margin-inline-start).
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#define CSS_PROPERTY_LOGICAL_END_EDGE (1<<26)
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// This property can be animated on the compositor.
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#define CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR (1<<27)
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// This property is an internal property that is not represented
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// in the DOM. Properties with this flag must be defined in an #ifndef
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// CSS_PROP_LIST_EXCLUDE_INTERNAL section of nsCSSPropList.h.
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#define CSS_PROPERTY_INTERNAL (1<<28)
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// This property has values that can establish a containing block for
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// fixed positioned and absolutely positioned elements.
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// This should be set for any properties that can cause an element to be
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// such a containing block, as implemented in
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// nsStyleDisplay::IsFixedPosContainingBlock.
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#define CSS_PROPERTY_FIXPOS_CB (1<<29)
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// This property has values that can establish a containing block for
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// absolutely positioned elements.
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// This should be set for any properties that can cause an element to be
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// such a containing block, as implemented in
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// nsStyleDisplay::IsAbsPosContainingBlock.
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// It does not need to be set for properties that also have
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// CSS_PROPERTY_FIXPOS_CB set.
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#define CSS_PROPERTY_ABSPOS_CB (1<<30)
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// This property should add Cross Origin Request headers to any loads
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// that it triggers. Currently this is only used for properties that
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// also use CSS_PROPERTY_START_IMAGE_LOADS.
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#define CSS_PROPERTY_LOAD_USE_CORS (1U<<31)
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/**
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* Types of animatable values.
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*/
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enum nsStyleAnimType {
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// requires a custom implementation in
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// StyleAnimationValue::ExtractComputedValue
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eStyleAnimType_Custom,
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// nsStyleCoord with animatable values
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eStyleAnimType_Coord,
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// same as Coord, except for one side of an nsStyleSides
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// listed in the same order as the NS_STYLE_* constants
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eStyleAnimType_Sides_Top,
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eStyleAnimType_Sides_Right,
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eStyleAnimType_Sides_Bottom,
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eStyleAnimType_Sides_Left,
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// similar, but for the *pair* of coord members of an nsStyleCorners
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// for the relevant corner
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eStyleAnimType_Corner_TopLeft,
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eStyleAnimType_Corner_TopRight,
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eStyleAnimType_Corner_BottomRight,
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eStyleAnimType_Corner_BottomLeft,
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// nscoord values
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eStyleAnimType_nscoord,
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// float values
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eStyleAnimType_float,
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// nscolor values
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eStyleAnimType_Color,
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// StyleComplexColor values
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eStyleAnimType_ComplexColor,
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// nsStyleSVGPaint values
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eStyleAnimType_PaintServer,
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// RefPtr<nsCSSShadowArray> values
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eStyleAnimType_Shadow,
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// discrete values
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eStyleAnimType_Discrete,
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// property not animatable
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eStyleAnimType_None
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};
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class nsCSSProps {
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public:
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typedef mozilla::CSSEnabledState EnabledState;
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struct KTableEntry
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{
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// KTableEntry objects can be initialized either with an int16_t value
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// or a value of an enumeration type that can fit within an int16_t.
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constexpr KTableEntry(nsCSSKeyword aKeyword, int16_t aValue)
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: mKeyword(aKeyword)
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, mValue(aValue)
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{
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}
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template<typename T,
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typename = typename std::enable_if<std::is_enum<T>::value>::type>
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constexpr KTableEntry(nsCSSKeyword aKeyword, T aValue)
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: mKeyword(aKeyword)
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, mValue(static_cast<int16_t>(aValue))
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{
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static_assert(mozilla::EnumTypeFitsWithin<T, int16_t>::value,
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"aValue must be an enum that fits within mValue");
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}
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bool IsSentinel() const
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{
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return mKeyword == eCSSKeyword_UNKNOWN && mValue == -1;
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}
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nsCSSKeyword mKeyword;
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int16_t mValue;
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};
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static void AddRefTable(void);
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static void ReleaseTable(void);
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// Looks up the property with name aProperty and returns its corresponding
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// nsCSSPropertyID value. If aProperty is the name of a custom property,
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// then eCSSPropertyExtra_variable will be returned.
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static nsCSSPropertyID LookupProperty(const nsAString& aProperty,
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EnabledState aEnabled);
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static nsCSSPropertyID LookupProperty(const nsACString& aProperty,
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EnabledState aEnabled);
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// As above, but looked up using a property's IDL name.
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// eCSSPropertyExtra_variable won't be returned from these methods.
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static nsCSSPropertyID LookupPropertyByIDLName(
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const nsAString& aPropertyIDLName,
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EnabledState aEnabled);
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static nsCSSPropertyID LookupPropertyByIDLName(
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const nsACString& aPropertyIDLName,
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EnabledState aEnabled);
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// Returns whether aProperty is a custom property name, i.e. begins with
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// "--". This assumes that the CSS Variables pref has been enabled.
|
|
static bool IsCustomPropertyName(const nsAString& aProperty);
|
|
static bool IsCustomPropertyName(const nsACString& aProperty);
|
|
|
|
static inline bool IsShorthand(nsCSSPropertyID aProperty) {
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT,
|
|
"out of range");
|
|
return (aProperty >= eCSSProperty_COUNT_no_shorthands);
|
|
}
|
|
|
|
// Must be given a longhand property.
|
|
static bool IsInherited(nsCSSPropertyID aProperty);
|
|
|
|
// Same but for @font-face descriptors
|
|
static nsCSSFontDesc LookupFontDesc(const nsAString& aProperty);
|
|
static nsCSSFontDesc LookupFontDesc(const nsACString& aProperty);
|
|
|
|
// For @counter-style descriptors
|
|
static nsCSSCounterDesc LookupCounterDesc(const nsAString& aProperty);
|
|
static nsCSSCounterDesc LookupCounterDesc(const nsACString& aProperty);
|
|
|
|
// For predefined counter styles which need to be lower-cased during parse
|
|
static bool IsPredefinedCounterStyle(const nsAString& aStyle);
|
|
static bool IsPredefinedCounterStyle(const nsACString& aStyle);
|
|
|
|
// Given a property enum, get the string value
|
|
static const nsCString& GetStringValue(nsCSSPropertyID aProperty);
|
|
static const nsCString& GetStringValue(nsCSSFontDesc aFontDesc);
|
|
static const nsCString& GetStringValue(nsCSSCounterDesc aCounterDesc);
|
|
|
|
// Given a CSS Property and a Property Enum Value
|
|
// Return back a const nsString& representation of the
|
|
// value. Return back nullstr if no value is found
|
|
static const nsCString& LookupPropertyValue(nsCSSPropertyID aProperty, int32_t aValue);
|
|
|
|
// Get a color name for a predefined color value like buttonhighlight or activeborder
|
|
// Sets the aStr param to the name of the propertyID
|
|
static bool GetColorName(int32_t aPropID, nsCString &aStr);
|
|
|
|
// Returns the index of |aKeyword| in |aTable|, if it exists there;
|
|
// otherwise, returns -1.
|
|
// NOTE: Generally, clients should call FindKeyword() instead of this method.
|
|
static int32_t FindIndexOfKeyword(nsCSSKeyword aKeyword,
|
|
const KTableEntry aTable[]);
|
|
|
|
// Find |aKeyword| in |aTable|, if found set |aValue| to its corresponding value.
|
|
// If not found, return false and do not set |aValue|.
|
|
static bool FindKeyword(nsCSSKeyword aKeyword, const KTableEntry aTable[],
|
|
int32_t& aValue);
|
|
// Return the first keyword in |aTable| that has the corresponding value |aValue|.
|
|
// Return |eCSSKeyword_UNKNOWN| if not found.
|
|
static nsCSSKeyword ValueToKeywordEnum(int32_t aValue,
|
|
const KTableEntry aTable[]);
|
|
template<typename T,
|
|
typename = typename std::enable_if<std::is_enum<T>::value>::type>
|
|
static nsCSSKeyword ValueToKeywordEnum(T aValue,
|
|
const KTableEntry aTable[])
|
|
{
|
|
static_assert(mozilla::EnumTypeFitsWithin<T, int16_t>::value,
|
|
"aValue must be an enum that fits within KTableEntry::mValue");
|
|
return ValueToKeywordEnum(static_cast<int16_t>(aValue), aTable);
|
|
}
|
|
// Ditto but as a string, return "" when not found.
|
|
static const nsCString& ValueToKeyword(int32_t aValue,
|
|
const KTableEntry aTable[]);
|
|
template<typename T,
|
|
typename = typename std::enable_if<std::is_enum<T>::value>::type>
|
|
static const nsCString& ValueToKeyword(T aValue, const KTableEntry aTable[])
|
|
{
|
|
static_assert(mozilla::EnumTypeFitsWithin<T, int16_t>::value,
|
|
"aValue must be an enum that fits within KTableEntry::mValue");
|
|
return ValueToKeyword(static_cast<int16_t>(aValue), aTable);
|
|
}
|
|
|
|
static const nsStyleStructID kSIDTable[eCSSProperty_COUNT_no_shorthands];
|
|
static const KTableEntry* const kKeywordTableTable[eCSSProperty_COUNT_no_shorthands];
|
|
static const nsStyleAnimType kAnimTypeTable[eCSSProperty_COUNT_no_shorthands];
|
|
static const ptrdiff_t
|
|
kStyleStructOffsetTable[eCSSProperty_COUNT_no_shorthands];
|
|
|
|
private:
|
|
static const uint32_t kFlagsTable[eCSSProperty_COUNT];
|
|
|
|
public:
|
|
static inline bool PropHasFlags(nsCSSPropertyID aProperty, uint32_t aFlags)
|
|
{
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT,
|
|
"out of range");
|
|
MOZ_ASSERT(!(aFlags & CSS_PROPERTY_PARSE_PROPERTY_MASK),
|
|
"The CSS_PROPERTY_PARSE_* values are not bitflags; don't pass "
|
|
"them to PropHasFlags. You probably want PropertyParseType "
|
|
"instead.");
|
|
return (nsCSSProps::kFlagsTable[aProperty] & aFlags) == aFlags;
|
|
}
|
|
|
|
static inline uint32_t PropertyParseType(nsCSSPropertyID aProperty)
|
|
{
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT,
|
|
"out of range");
|
|
return nsCSSProps::kFlagsTable[aProperty] &
|
|
CSS_PROPERTY_PARSE_PROPERTY_MASK;
|
|
}
|
|
|
|
static inline uint32_t ValueRestrictions(nsCSSPropertyID aProperty)
|
|
{
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT,
|
|
"out of range");
|
|
return nsCSSProps::kFlagsTable[aProperty] &
|
|
CSS_PROPERTY_VALUE_RESTRICTION_MASK;
|
|
}
|
|
|
|
private:
|
|
static const uint32_t kParserVariantTable[eCSSProperty_COUNT_no_shorthands];
|
|
|
|
public:
|
|
static inline uint32_t ParserVariant(nsCSSPropertyID aProperty) {
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
return nsCSSProps::kParserVariantTable[aProperty];
|
|
}
|
|
|
|
private:
|
|
// A table for shorthand properties. The appropriate index is the
|
|
// property ID minus eCSSProperty_COUNT_no_shorthands.
|
|
static const nsCSSPropertyID *const
|
|
kSubpropertyTable[eCSSProperty_COUNT - eCSSProperty_COUNT_no_shorthands];
|
|
|
|
public:
|
|
static inline
|
|
const nsCSSPropertyID * SubpropertyEntryFor(nsCSSPropertyID aProperty) {
|
|
MOZ_ASSERT(eCSSProperty_COUNT_no_shorthands <= aProperty &&
|
|
aProperty < eCSSProperty_COUNT,
|
|
"out of range");
|
|
return nsCSSProps::kSubpropertyTable[aProperty -
|
|
eCSSProperty_COUNT_no_shorthands];
|
|
}
|
|
|
|
// Returns an eCSSProperty_UNKNOWN-terminated array of the shorthand
|
|
// properties containing |aProperty|, sorted from those that contain
|
|
// the most properties to those that contain the least.
|
|
static const nsCSSPropertyID * ShorthandsContaining(nsCSSPropertyID aProperty) {
|
|
MOZ_ASSERT(gShorthandsContainingPool, "uninitialized");
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
return gShorthandsContainingTable[aProperty];
|
|
}
|
|
private:
|
|
// gShorthandsContainingTable is an array of the return values for
|
|
// ShorthandsContaining (arrays of nsCSSPropertyID terminated by
|
|
// eCSSProperty_UNKNOWN) pointing into memory in
|
|
// gShorthandsContainingPool (which contains all of those arrays in a
|
|
// single allocation, and is the one pointer that should be |free|d).
|
|
static nsCSSPropertyID *gShorthandsContainingTable[eCSSProperty_COUNT_no_shorthands];
|
|
static nsCSSPropertyID* gShorthandsContainingPool;
|
|
static bool BuildShorthandsContainingTable();
|
|
|
|
private:
|
|
static const size_t gPropertyCountInStruct[nsStyleStructID_Length];
|
|
static const size_t gPropertyIndexInStruct[eCSSProperty_COUNT_no_shorthands];
|
|
public:
|
|
/**
|
|
* Return the number of properties that must be cascaded when
|
|
* nsRuleNode builds the nsStyle* for aSID.
|
|
*/
|
|
static size_t PropertyCountInStruct(nsStyleStructID aSID) {
|
|
MOZ_ASSERT(0 <= aSID && aSID < nsStyleStructID_Length,
|
|
"out of range");
|
|
return gPropertyCountInStruct[aSID];
|
|
}
|
|
/**
|
|
* Return an index for aProperty that is unique within its SID and in
|
|
* the range 0 <= index < PropertyCountInStruct(aSID).
|
|
*/
|
|
static size_t PropertyIndexInStruct(nsCSSPropertyID aProperty) {
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
return gPropertyIndexInStruct[aProperty];
|
|
}
|
|
|
|
private:
|
|
// A table for logical property groups. Indexes are
|
|
// nsCSSPropertyLogicalGroup values.
|
|
static const nsCSSPropertyID* const
|
|
kLogicalGroupTable[eCSSPropertyLogicalGroup_COUNT];
|
|
|
|
public:
|
|
/**
|
|
* Returns an array of longhand physical properties which can be set by
|
|
* the argument, which must be a logical longhand property. The returned
|
|
* array is terminated by an eCSSProperty_UNKNOWN value. For example,
|
|
* given eCSSProperty_margin_block_start, returns an array of the four
|
|
* properties eCSSProperty_margin_top, eCSSProperty_margin_right,
|
|
* eCSSProperty_margin_bottom and eCSSProperty_margin_left, followed
|
|
* by the sentinel.
|
|
*
|
|
* When called with a property that has the CSS_PROPERTY_LOGICAL_AXIS
|
|
* flag, the returned array will have two values preceding the sentinel;
|
|
* otherwise it will have four.
|
|
*
|
|
* (Note that the running time of this function is proportional to the
|
|
* number of logical longhand properties that exist. If we start
|
|
* getting too many of these properties, we should make kLogicalGroupTable
|
|
* be a simple array of eCSSProperty_COUNT length.)
|
|
*/
|
|
static const nsCSSPropertyID* LogicalGroup(nsCSSPropertyID aProperty);
|
|
|
|
private:
|
|
static bool gPropertyEnabled[eCSSProperty_COUNT_with_aliases];
|
|
|
|
private:
|
|
// Defined in the generated nsCSSPropsGenerated.inc.
|
|
static const char* const kIDLNameTable[eCSSProperty_COUNT];
|
|
|
|
public:
|
|
/**
|
|
* Returns the IDL name of the specified property, which must be a
|
|
* longhand, logical or shorthand property. The IDL name is the property
|
|
* name with any hyphen-lowercase character pairs replaced by an
|
|
* uppercase character:
|
|
* https://drafts.csswg.org/cssom/#css-property-to-idl-attribute
|
|
*
|
|
* As a special case, the string "cssFloat" is returned for the float
|
|
* property. nullptr is returned for internal properties.
|
|
*/
|
|
static const char* PropertyIDLName(nsCSSPropertyID aProperty)
|
|
{
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT,
|
|
"out of range");
|
|
return kIDLNameTable[aProperty];
|
|
}
|
|
|
|
private:
|
|
static const int32_t kIDLNameSortPositionTable[eCSSProperty_COUNT];
|
|
|
|
public:
|
|
/**
|
|
* Returns the position of the specified property in a list of all
|
|
* properties sorted by their IDL name.
|
|
*/
|
|
static int32_t PropertyIDLNameSortPosition(nsCSSPropertyID aProperty)
|
|
{
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT,
|
|
"out of range");
|
|
return kIDLNameSortPositionTable[aProperty];
|
|
}
|
|
|
|
static bool IsEnabled(nsCSSPropertyID aProperty) {
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_with_aliases,
|
|
"out of range");
|
|
// In the child process, assert that we're not trying to parse stylesheets
|
|
// before we've gotten all our prefs.
|
|
MOZ_ASSERT_IF(!XRE_IsParentProcess(),
|
|
mozilla::Preferences::AreAllPrefsSetInContentProcess());
|
|
return gPropertyEnabled[aProperty];
|
|
}
|
|
|
|
// A table for the use counter associated with each CSS property. If a
|
|
// property does not have a use counter defined in UseCounters.conf, then
|
|
// its associated entry is |eUseCounter_UNKNOWN|.
|
|
static const mozilla::UseCounter gPropertyUseCounter[eCSSProperty_COUNT_no_shorthands];
|
|
|
|
public:
|
|
|
|
static mozilla::UseCounter UseCounterFor(nsCSSPropertyID aProperty) {
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands,
|
|
"out of range");
|
|
return gPropertyUseCounter[aProperty];
|
|
}
|
|
|
|
static bool IsEnabled(nsCSSPropertyID aProperty, EnabledState aEnabled)
|
|
{
|
|
if (IsEnabled(aProperty)) {
|
|
return true;
|
|
}
|
|
if (aEnabled == EnabledState::eIgnoreEnabledState) {
|
|
return true;
|
|
}
|
|
if ((aEnabled & EnabledState::eInUASheets) &&
|
|
PropHasFlags(aProperty, CSS_PROPERTY_ENABLED_IN_UA_SHEETS))
|
|
{
|
|
return true;
|
|
}
|
|
if ((aEnabled & EnabledState::eInChrome) &&
|
|
PropHasFlags(aProperty, CSS_PROPERTY_ENABLED_IN_CHROME))
|
|
{
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public:
|
|
|
|
// Return an array of possible list style types, and the length of
|
|
// the array.
|
|
static const char* const* GetListStyleTypes(int32_t *aLength);
|
|
|
|
// Storing the enabledstate_ value in an nsCSSPropertyID variable is a small hack
|
|
// to avoid needing a separate variable declaration for its real type
|
|
// (CSSEnabledState), which would then require using a block and
|
|
// therefore a pair of macros by consumers for the start and end of the loop.
|
|
#define CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(it_, prop_, enabledstate_) \
|
|
for (const nsCSSPropertyID *it_ = nsCSSProps::SubpropertyEntryFor(prop_), \
|
|
es_ = (nsCSSPropertyID)((enabledstate_) | \
|
|
CSSEnabledState(0)); \
|
|
*it_ != eCSSProperty_UNKNOWN; ++it_) \
|
|
if (nsCSSProps::IsEnabled(*it_, (mozilla::CSSEnabledState) es_))
|
|
|
|
// Keyword/Enum value tables
|
|
static const KTableEntry kAnimationDirectionKTable[];
|
|
static const KTableEntry kAnimationFillModeKTable[];
|
|
static const KTableEntry kAnimationIterationCountKTable[];
|
|
static const KTableEntry kAnimationPlayStateKTable[];
|
|
static const KTableEntry kAnimationTimingFunctionKTable[];
|
|
static const KTableEntry kAppearanceKTable[];
|
|
static const KTableEntry kAzimuthKTable[];
|
|
static const KTableEntry kBackfaceVisibilityKTable[];
|
|
static const KTableEntry kTransformStyleKTable[];
|
|
static const KTableEntry kImageLayerAttachmentKTable[];
|
|
static const KTableEntry kBackgroundOriginKTable[];
|
|
static const KTableEntry kMaskOriginKTable[];
|
|
static const KTableEntry kImageLayerPositionKTable[];
|
|
static const KTableEntry kImageLayerRepeatKTable[];
|
|
static const KTableEntry kImageLayerRepeatPartKTable[];
|
|
static const KTableEntry kImageLayerSizeKTable[];
|
|
static const KTableEntry kImageLayerCompositeKTable[];
|
|
static const KTableEntry kImageLayerModeKTable[];
|
|
// Not const because we modify its entries when the pref
|
|
// "layout.css.background-clip.text" changes:
|
|
static KTableEntry kBackgroundClipKTable[];
|
|
static const KTableEntry kMaskClipKTable[];
|
|
static const KTableEntry kBlendModeKTable[];
|
|
static const KTableEntry kBorderCollapseKTable[];
|
|
static const KTableEntry kBorderImageRepeatKTable[];
|
|
static const KTableEntry kBorderImageSliceKTable[];
|
|
static const KTableEntry kBorderStyleKTable[];
|
|
static const KTableEntry kBorderWidthKTable[];
|
|
static const KTableEntry kBoxAlignKTable[];
|
|
static const KTableEntry kBoxDecorationBreakKTable[];
|
|
static const KTableEntry kBoxDirectionKTable[];
|
|
static const KTableEntry kBoxOrientKTable[];
|
|
static const KTableEntry kBoxPackKTable[];
|
|
static const KTableEntry kClipPathGeometryBoxKTable[];
|
|
static const KTableEntry kCounterRangeKTable[];
|
|
static const KTableEntry kCounterSpeakAsKTable[];
|
|
static const KTableEntry kCounterSymbolsSystemKTable[];
|
|
static const KTableEntry kCounterSystemKTable[];
|
|
static const KTableEntry kDominantBaselineKTable[];
|
|
static const KTableEntry kShapeRadiusKTable[];
|
|
static const KTableEntry kFillRuleKTable[];
|
|
static const KTableEntry kFilterFunctionKTable[];
|
|
static const KTableEntry kImageRenderingKTable[];
|
|
static const KTableEntry kShapeOutsideShapeBoxKTable[];
|
|
static const KTableEntry kShapeRenderingKTable[];
|
|
static const KTableEntry kStrokeLinecapKTable[];
|
|
static const KTableEntry kStrokeLinejoinKTable[];
|
|
static const KTableEntry kStrokeContextValueKTable[];
|
|
static const KTableEntry kVectorEffectKTable[];
|
|
static const KTableEntry kTextAnchorKTable[];
|
|
static const KTableEntry kTextRenderingKTable[];
|
|
static const KTableEntry kColorAdjustKTable[];
|
|
static const KTableEntry kColorInterpolationKTable[];
|
|
static const KTableEntry kColumnFillKTable[];
|
|
static const KTableEntry kColumnSpanKTable[];
|
|
static const KTableEntry kBoxPropSourceKTable[];
|
|
static const KTableEntry kBoxShadowTypeKTable[];
|
|
static const KTableEntry kBoxSizingKTable[];
|
|
static const KTableEntry kCaptionSideKTable[];
|
|
// Not const because we modify its entries when the pref
|
|
// "layout.css.float-logical-values.enabled" changes:
|
|
static KTableEntry kClearKTable[];
|
|
static const KTableEntry kColorKTable[];
|
|
static const KTableEntry kContentKTable[];
|
|
static const KTableEntry kControlCharacterVisibilityKTable[];
|
|
static const KTableEntry kCursorKTable[];
|
|
static const KTableEntry kDirectionKTable[];
|
|
// Not const because we modify its entries when various
|
|
// "layout.css.*.enabled" prefs changes:
|
|
static KTableEntry kDisplayKTable[];
|
|
static const KTableEntry kElevationKTable[];
|
|
static const KTableEntry kEmptyCellsKTable[];
|
|
// -- tables for parsing the {align,justify}-{content,items,self} properties --
|
|
static const KTableEntry kAlignAllKeywords[];
|
|
static const KTableEntry kAlignOverflowPosition[]; // <overflow-position>
|
|
static const KTableEntry kAlignSelfPosition[]; // <self-position>
|
|
static const KTableEntry kAlignLegacy[]; // 'legacy'
|
|
static const KTableEntry kAlignLegacyPosition[]; // 'left/right/center'
|
|
static const KTableEntry kAlignAutoNormalStretchBaseline[]; // 'auto/normal/stretch/baseline'
|
|
static const KTableEntry kAlignNormalStretchBaseline[]; // 'normal/stretch/baseline'
|
|
static const KTableEntry kAlignNormalBaseline[]; // 'normal/baseline'
|
|
static const KTableEntry kAlignContentDistribution[]; // <content-distribution>
|
|
static const KTableEntry kAlignContentPosition[]; // <content-position>
|
|
// -- tables for auto-completion of the {align,justify}-{content,items,self} properties --
|
|
static const KTableEntry kAutoCompletionAlignJustifySelf[];
|
|
static const KTableEntry kAutoCompletionAlignItems[];
|
|
static const KTableEntry kAutoCompletionAlignJustifyContent[];
|
|
// ------------------------------------------------------------------
|
|
static const KTableEntry kFlexDirectionKTable[];
|
|
static const KTableEntry kFlexWrapKTable[];
|
|
// Not const because we modify its entries when the pref
|
|
// "layout.css.float-logical-values.enabled" changes:
|
|
static KTableEntry kFloatKTable[];
|
|
static const KTableEntry kFloatEdgeKTable[];
|
|
static const KTableEntry kFontDisplayKTable[];
|
|
static const KTableEntry kFontKTable[];
|
|
static const KTableEntry kFontKerningKTable[];
|
|
static const KTableEntry kFontSizeKTable[];
|
|
static const KTableEntry kFontSmoothingKTable[];
|
|
static const KTableEntry kFontStretchKTable[];
|
|
static const KTableEntry kFontStyleKTable[];
|
|
static const KTableEntry kFontSynthesisKTable[];
|
|
static const KTableEntry kFontVariantKTable[];
|
|
static const KTableEntry kFontVariantAlternatesKTable[];
|
|
static const KTableEntry kFontVariantAlternatesFuncsKTable[];
|
|
static const KTableEntry kFontVariantCapsKTable[];
|
|
static const KTableEntry kFontVariantEastAsianKTable[];
|
|
static const KTableEntry kFontVariantLigaturesKTable[];
|
|
static const KTableEntry kFontVariantNumericKTable[];
|
|
static const KTableEntry kFontVariantPositionKTable[];
|
|
static const KTableEntry kFontWeightKTable[];
|
|
static const KTableEntry kGridAutoFlowKTable[];
|
|
static const KTableEntry kGridTrackBreadthKTable[];
|
|
static const KTableEntry kHyphensKTable[];
|
|
static const KTableEntry kImageOrientationKTable[];
|
|
static const KTableEntry kImageOrientationFlipKTable[];
|
|
static const KTableEntry kIsolationKTable[];
|
|
static const KTableEntry kIMEModeKTable[];
|
|
static const KTableEntry kLineHeightKTable[];
|
|
static const KTableEntry kListStylePositionKTable[];
|
|
static const KTableEntry kMaskTypeKTable[];
|
|
static const KTableEntry kMathVariantKTable[];
|
|
static const KTableEntry kMathDisplayKTable[];
|
|
static const KTableEntry kContainKTable[];
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static const KTableEntry kContextOpacityKTable[];
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static const KTableEntry kContextPatternKTable[];
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static const KTableEntry kObjectFitKTable[];
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static const KTableEntry kOrientKTable[];
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static const KTableEntry kOutlineStyleKTable[];
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static const KTableEntry kOverflowKTable[];
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static const KTableEntry kOverflowSubKTable[];
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static const KTableEntry kOverflowClipBoxKTable[];
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static const KTableEntry kOverflowWrapKTable[];
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static const KTableEntry kPageBreakKTable[];
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static const KTableEntry kPageBreakInsideKTable[];
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static const KTableEntry kPageMarksKTable[];
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static const KTableEntry kPageSizeKTable[];
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static const KTableEntry kPitchKTable[];
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static const KTableEntry kPointerEventsKTable[];
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static const KTableEntry kPositionKTable[];
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static const KTableEntry kRadialGradientShapeKTable[];
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static const KTableEntry kRadialGradientSizeKTable[];
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static const KTableEntry kRadialGradientLegacySizeKTable[];
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static const KTableEntry kResizeKTable[];
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static const KTableEntry kRubyAlignKTable[];
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static const KTableEntry kRubyPositionKTable[];
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static const KTableEntry kScrollBehaviorKTable[];
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static const KTableEntry kOverscrollBehaviorKTable[];
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static const KTableEntry kScrollSnapTypeKTable[];
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static const KTableEntry kSpeakKTable[];
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static const KTableEntry kSpeakHeaderKTable[];
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static const KTableEntry kSpeakNumeralKTable[];
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static const KTableEntry kSpeakPunctuationKTable[];
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static const KTableEntry kSpeechRateKTable[];
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static const KTableEntry kStackSizingKTable[];
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static const KTableEntry kTableLayoutKTable[];
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// Not const because we modify its entries when the pref
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// "layout.css.text-align-unsafe-value.enabled" changes:
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static KTableEntry kTextAlignKTable[];
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static KTableEntry kTextAlignLastKTable[];
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static const KTableEntry kTextCombineUprightKTable[];
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static const KTableEntry kTextDecorationLineKTable[];
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static const KTableEntry kTextDecorationStyleKTable[];
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static const KTableEntry kTextEmphasisPositionKTable[];
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static const KTableEntry kTextEmphasisStyleFillKTable[];
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static const KTableEntry kTextEmphasisStyleShapeKTable[];
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static const KTableEntry kTextJustifyKTable[];
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static const KTableEntry kTextOrientationKTable[];
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static const KTableEntry kTextOverflowKTable[];
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static const KTableEntry kTextSizeAdjustKTable[];
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static const KTableEntry kTextTransformKTable[];
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static const KTableEntry kTouchActionKTable[];
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static const KTableEntry kTopLayerKTable[];
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static const KTableEntry kTransformBoxKTable[];
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static const KTableEntry kTransitionTimingFunctionKTable[];
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static const KTableEntry kUnicodeBidiKTable[];
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static const KTableEntry kUserFocusKTable[];
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static const KTableEntry kUserInputKTable[];
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static const KTableEntry kUserModifyKTable[];
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static const KTableEntry kUserSelectKTable[];
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static const KTableEntry kVerticalAlignKTable[];
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static const KTableEntry kVisibilityKTable[];
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static const KTableEntry kVolumeKTable[];
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static const KTableEntry kWhitespaceKTable[];
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static const KTableEntry kWidthKTable[]; // also min-width, max-width
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static const KTableEntry kWindowDraggingKTable[];
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static const KTableEntry kWindowShadowKTable[];
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static const KTableEntry kWordBreakKTable[];
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static const KTableEntry kWritingModeKTable[];
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};
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#endif /* nsCSSProps_h___ */
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