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gecko-dev/layout/style/nsCSSProps.h
CJKu d2552e50a5 Bug 759568 - Part 1. Parse background-clip:text; r=dholbert r=heycam 
MozReview-Commit-ID: BPuQjWYvAuj
2016-04-14 16:28:06 +08:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
/*
* methods for dealing with CSS properties and tables of the keyword
* values they accept
*/
#ifndef nsCSSProps_h___
#define nsCSSProps_h___
#include "nsString.h"
#include "nsCSSProperty.h"
#include "nsStyleStructFwd.h"
#include "nsCSSKeywords.h"
#include "mozilla/UseCounter.h"
// Length of the "--" prefix on custom names (such as custom property names,
// and, in the future, custom media query names).
#define CSS_CUSTOM_NAME_PREFIX_LENGTH 2
// Flags for ParseVariant method
#define VARIANT_KEYWORD 0x000001 // K
#define VARIANT_LENGTH 0x000002 // L
#define VARIANT_PERCENT 0x000004 // P
#define VARIANT_COLOR 0x000008 // C eCSSUnit_*Color, eCSSUnit_Ident (e.g. "red")
#define VARIANT_URL 0x000010 // U
#define VARIANT_NUMBER 0x000020 // N
#define VARIANT_INTEGER 0x000040 // I
#define VARIANT_ANGLE 0x000080 // G
#define VARIANT_FREQUENCY 0x000100 // F
#define VARIANT_TIME 0x000200 // T
#define VARIANT_STRING 0x000400 // S
#define VARIANT_COUNTER 0x000800 //
#define VARIANT_ATTR 0x001000 //
#define VARIANT_IDENTIFIER 0x002000 // D
#define VARIANT_IDENTIFIER_NO_INHERIT 0x004000 // like above, but excluding
// 'inherit' and 'initial'
#define VARIANT_AUTO 0x010000 // A
#define VARIANT_INHERIT 0x020000 // H eCSSUnit_Initial, eCSSUnit_Inherit, eCSSUnit_Unset
#define VARIANT_NONE 0x040000 // O
#define VARIANT_NORMAL 0x080000 // M
#define VARIANT_SYSFONT 0x100000 // eCSSUnit_System_Font
#define VARIANT_GRADIENT 0x200000 // eCSSUnit_Gradient
#define VARIANT_TIMING_FUNCTION 0x400000 // cubic-bezier() and steps()
#define VARIANT_ALL 0x800000 //
#define VARIANT_IMAGE_RECT 0x01000000 // eCSSUnit_Function
// This is an extra bit that says that a VARIANT_ANGLE allows unitless zero:
#define VARIANT_ZERO_ANGLE 0x02000000 // unitless zero for angles
#define VARIANT_CALC 0x04000000 // eCSSUnit_Calc
#define VARIANT_ELEMENT 0x08000000 // eCSSUnit_Element
#define VARIANT_POSITIVE_DIMENSION 0x10000000 // Only lengths greater than 0.0
#define VARIANT_NONNEGATIVE_DIMENSION 0x20000000 // Only lengths greater than or equal to 0.0
// Keyword used iff gfx.font_rendering.opentype_svg.enabled is true:
#define VARIANT_OPENTYPE_SVG_KEYWORD 0x40000000
#define VARIANT_ABSOLUTE_DIMENSION 0x80000000 // B Only lengths with absolute length unit
// Variants that can consume more than one token
#define VARIANT_MULTIPLE_TOKENS \
(VARIANT_COLOR | /* rgb(...), hsl(...), etc. */ \
VARIANT_COUNTER | /* counter(...), counters(...) */ \
VARIANT_ATTR | /* attr(...) */ \
VARIANT_GRADIENT | /* linear-gradient(...), etc. */ \
VARIANT_TIMING_FUNCTION | /* cubic-bezier(...), steps(...) */ \
VARIANT_IMAGE_RECT | /* -moz-image-rect(...) */ \
VARIANT_CALC | /* calc(...) */ \
VARIANT_ELEMENT) /* -moz-element(...) */
// Common combinations of variants
#define VARIANT_AL (VARIANT_AUTO | VARIANT_LENGTH)
#define VARIANT_LP (VARIANT_LENGTH | VARIANT_PERCENT)
#define VARIANT_LN (VARIANT_LENGTH | VARIANT_NUMBER)
#define VARIANT_AH (VARIANT_AUTO | VARIANT_INHERIT)
#define VARIANT_AHLP (VARIANT_AH | VARIANT_LP)
#define VARIANT_AHI (VARIANT_AH | VARIANT_INTEGER)
#define VARIANT_AHK (VARIANT_AH | VARIANT_KEYWORD)
#define VARIANT_AHKLP (VARIANT_AHLP | VARIANT_KEYWORD)
#define VARIANT_AHL (VARIANT_AH | VARIANT_LENGTH)
#define VARIANT_AHKL (VARIANT_AHK | VARIANT_LENGTH)
#define VARIANT_HK (VARIANT_INHERIT | VARIANT_KEYWORD)
#define VARIANT_HKF (VARIANT_HK | VARIANT_FREQUENCY)
#define VARIANT_HKI (VARIANT_HK | VARIANT_INTEGER)
#define VARIANT_HKL (VARIANT_HK | VARIANT_LENGTH)
#define VARIANT_HKLP (VARIANT_HK | VARIANT_LP)
#define VARIANT_HKLPO (VARIANT_HKLP | VARIANT_NONE)
#define VARIANT_HL (VARIANT_INHERIT | VARIANT_LENGTH)
#define VARIANT_HI (VARIANT_INHERIT | VARIANT_INTEGER)
#define VARIANT_HLP (VARIANT_HL | VARIANT_PERCENT)
#define VARIANT_HLPN (VARIANT_HLP | VARIANT_NUMBER)
#define VARIANT_HLPO (VARIANT_HLP | VARIANT_NONE)
#define VARIANT_HTP (VARIANT_INHERIT | VARIANT_TIME | VARIANT_PERCENT)
#define VARIANT_HMK (VARIANT_HK | VARIANT_NORMAL)
#define VARIANT_HC (VARIANT_INHERIT | VARIANT_COLOR)
#define VARIANT_HCK (VARIANT_HK | VARIANT_COLOR)
#define VARIANT_HUK (VARIANT_HK | VARIANT_URL)
#define VARIANT_HUO (VARIANT_INHERIT | VARIANT_URL | VARIANT_NONE)
#define VARIANT_AHUO (VARIANT_AUTO | VARIANT_HUO)
#define VARIANT_HPN (VARIANT_INHERIT | VARIANT_PERCENT | VARIANT_NUMBER)
#define VARIANT_PN (VARIANT_PERCENT | VARIANT_NUMBER)
#define VARIANT_ALPN (VARIANT_AL | VARIANT_PN)
#define VARIANT_HN (VARIANT_INHERIT | VARIANT_NUMBER)
#define VARIANT_HON (VARIANT_HN | VARIANT_NONE)
#define VARIANT_HOS (VARIANT_INHERIT | VARIANT_NONE | VARIANT_STRING)
#define VARIANT_LPN (VARIANT_LP | VARIANT_NUMBER)
#define VARIANT_UK (VARIANT_URL | VARIANT_KEYWORD)
#define VARIANT_UO (VARIANT_URL | VARIANT_NONE)
#define VARIANT_ANGLE_OR_ZERO (VARIANT_ANGLE | VARIANT_ZERO_ANGLE)
#define VARIANT_LB (VARIANT_LENGTH | VARIANT_ABSOLUTE_DIMENSION)
#define VARIANT_LBCALC (VARIANT_LB | VARIANT_CALC)
#define VARIANT_LCALC (VARIANT_LENGTH | VARIANT_CALC)
#define VARIANT_LPCALC (VARIANT_LCALC | VARIANT_PERCENT)
#define VARIANT_LNCALC (VARIANT_LCALC | VARIANT_NUMBER)
#define VARIANT_LPNCALC (VARIANT_LNCALC | VARIANT_PERCENT)
#define VARIANT_IMAGE (VARIANT_URL | VARIANT_NONE | VARIANT_GRADIENT | \
VARIANT_IMAGE_RECT | VARIANT_ELEMENT)
// Flags for the kFlagsTable bitfield (flags_ in nsCSSPropList.h)
// This property is a logical property (such as padding-inline-start).
#define CSS_PROPERTY_LOGICAL (1<<0)
#define CSS_PROPERTY_VALUE_LIST_USES_COMMAS (1<<1) /* otherwise spaces */
#define CSS_PROPERTY_APPLIES_TO_FIRST_LETTER (1<<2)
#define CSS_PROPERTY_APPLIES_TO_FIRST_LINE (1<<3)
#define CSS_PROPERTY_APPLIES_TO_FIRST_LETTER_AND_FIRST_LINE \
(CSS_PROPERTY_APPLIES_TO_FIRST_LETTER | CSS_PROPERTY_APPLIES_TO_FIRST_LINE)
// Note that 'background-color' is ignored differently from the other
// properties that have this set, but that's just special-cased.
#define CSS_PROPERTY_IGNORED_WHEN_COLORS_DISABLED (1<<4)
// A property that needs to have image loads started when a URL value
// for the property is used for an element. This is supported only
// for a few possible value formats: image directly in the value; list
// of images; and with CSS_PROPERTY_IMAGE_IS_IN_ARRAY_0, image in slot
// 0 of an array, or list of such arrays.
#define CSS_PROPERTY_START_IMAGE_LOADS (1<<5)
// Should be set only for properties with START_IMAGE_LOADS. Indicates
// that the property has an array value with a URL/image value at index
// 0 in the array, rather than the URL/image being in the value or value
// list.
#define CSS_PROPERTY_IMAGE_IS_IN_ARRAY_0 (1<<6)
// This is a logical property that represents some value associated with
// a logical axis rather than a logical box side, and thus has two
// corresponding physical properties it could set rather than four. For
// example, the block-size logical property has this flag set, as it
// represents the size in either the block or inline axis dimensions, and
// has two corresponding physical properties, width and height. Must not
// be used in conjunction with CSS_PROPERTY_LOGICAL_END_EDGE.
#define CSS_PROPERTY_LOGICAL_AXIS (1<<7)
// This property allows calc() between lengths and percentages and
// stores such calc() expressions in its style structs (typically in an
// nsStyleCoord, although this is not the case for 'background-position'
// and 'background-size').
#define CSS_PROPERTY_STORES_CALC (1<<8)
// Define what mechanism the CSS parser uses for parsing the property.
// See CSSParserImpl::ParseProperty(nsCSSProperty). Don't use 0 so that
// we can verify that every property sets one of the values.
//
// CSS_PROPERTY_PARSE_FUNCTION must be used for shorthand properties,
// since it's the only mechanism that allows appending values for
// separate properties. Longhand properties that require custom parsing
// functions should prefer using CSS_PROPERTY_PARSE_VALUE (or
// CSS_PROPERTY_PARSE_VALUE_LIST) and
// CSS_PROPERTY_VALUE_PARSER_FUNCTION, though a number of existing
// longhand properties use CSS_PROPERTY_PARSE_FUNCTION instead.
#define CSS_PROPERTY_PARSE_PROPERTY_MASK (7<<9)
#define CSS_PROPERTY_PARSE_INACCESSIBLE (1<<9)
#define CSS_PROPERTY_PARSE_FUNCTION (2<<9)
#define CSS_PROPERTY_PARSE_VALUE (3<<9)
#define CSS_PROPERTY_PARSE_VALUE_LIST (4<<9)
// See CSSParserImpl::ParseSingleValueProperty and comment above
// CSS_PROPERTY_PARSE_FUNCTION (which is different).
#define CSS_PROPERTY_VALUE_PARSER_FUNCTION (1<<12)
static_assert((CSS_PROPERTY_PARSE_PROPERTY_MASK &
CSS_PROPERTY_VALUE_PARSER_FUNCTION) == 0,
"didn't leave enough room for the parse property constants");
#define CSS_PROPERTY_VALUE_RESTRICTION_MASK (3<<13)
// The parser (in particular, CSSParserImpl::ParseSingleValueProperty)
// should enforce that the value of this property must be 0 or larger.
#define CSS_PROPERTY_VALUE_NONNEGATIVE (1<<13)
// The parser (in particular, CSSParserImpl::ParseSingleValueProperty)
// should enforce that the value of this property must be 1 or larger.
#define CSS_PROPERTY_VALUE_AT_LEAST_ONE (2<<13)
// Does this property support the hashless hex color quirk in quirks mode?
#define CSS_PROPERTY_HASHLESS_COLOR_QUIRK (1<<15)
// Does this property support the unitless length quirk in quirks mode?
#define CSS_PROPERTY_UNITLESS_LENGTH_QUIRK (1<<16)
// Is this property (which must be a shorthand) really an alias?
#define CSS_PROPERTY_IS_ALIAS (1<<17)
// Does the property apply to ::-moz-placeholder?
#define CSS_PROPERTY_APPLIES_TO_PLACEHOLDER (1<<18)
// This property is allowed in an @page rule.
#define CSS_PROPERTY_APPLIES_TO_PAGE_RULE (1<<19)
// This property's getComputedStyle implementation requires layout to be
// flushed.
#define CSS_PROPERTY_GETCS_NEEDS_LAYOUT_FLUSH (1<<20)
// This property requires a stacking context.
#define CSS_PROPERTY_CREATES_STACKING_CONTEXT (1<<21)
// The following two flags along with the pref defines where the this
// property can be used:
// * If none of the two flags is presented, the pref completely controls
// the availability of this property. And in that case, if it has no
// pref, this property is usable everywhere.
// * If any of the flags is set, this property is always enabled in the
// specific contexts regardless of the value of the pref. If there is
// no pref for this property at all in this case, it is an internal-
// only property, which cannot be used anywhere else, and should be
// wrapped in "#ifndef CSS_PROP_LIST_EXCLUDE_INTERNAL".
// Note that, these flags have no effect on the use of aliases of this
// property.
#define CSS_PROPERTY_ENABLED_MASK (3<<22)
#define CSS_PROPERTY_ENABLED_IN_UA_SHEETS (1<<22)
#define CSS_PROPERTY_ENABLED_IN_CHROME (1<<23)
#define CSS_PROPERTY_ENABLED_IN_UA_SHEETS_AND_CHROME \
(CSS_PROPERTY_ENABLED_IN_UA_SHEETS | CSS_PROPERTY_ENABLED_IN_CHROME)
// This property's unitless values are pixels.
#define CSS_PROPERTY_NUMBERS_ARE_PIXELS (1<<24)
// This property is a logical property for one of the two block axis
// sides (such as margin-block-start or margin-block-end). Must only be
// set if CSS_PROPERTY_LOGICAL is set. When not set, the logical
// property is for one of the two inline axis sides (such as
// margin-inline-start or margin-inline-end).
#define CSS_PROPERTY_LOGICAL_BLOCK_AXIS (1<<25)
// This property is a logical property for the "end" edge of the
// axis determined by the presence or absence of
// CSS_PROPERTY_LOGICAL_BLOCK_AXIS (such as margin-block-end or
// margin-inline-end). Must only be set if CSS_PROPERTY_LOGICAL is set.
// When not set, the logical property is for the "start" edge (such as
// margin-block-start or margin-inline-start).
#define CSS_PROPERTY_LOGICAL_END_EDGE (1<<26)
// This property is a logical property which always maps to the same physical
// property, and its values have some custom processing when being mapped to
// the physical property's values. Must not be used in conjunction with
// CSS_PROPERTY_LOGICAL_{AXIS,BLOCK_AXIS,END_EDGE}.
#define CSS_PROPERTY_LOGICAL_SINGLE_CUSTOM_VALMAPPING (1<<27)
// This property can be animated on the compositor.
#define CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR (1<<28)
// This property is an internal property that is not represented
// in the DOM. Properties with this flag must be defined in an #ifndef
// CSS_PROP_LIST_EXCLUDE_INTERNAL section of nsCSSPropList.h.
#define CSS_PROPERTY_INTERNAL (1<<29)
// This property has values that can establish a containing block for
// fixed positioned and absolutely positioned elements.
// This should be set for any properties that can cause an element to be
// such a containing block, as implemented in
// nsStyleDisplay::IsFixedPosContainingBlock.
#define CSS_PROPERTY_FIXPOS_CB (1<<30)
// This property has values that can establish a containing block for
// absolutely positioned elements.
// This should be set for any properties that can cause an element to be
// such a containing block, as implemented in
// nsStyleDisplay::IsAbsPosContainingBlock.
// It does not need to be set for properties that also have
// CSS_PROPERTY_FIXPOS_CB set.
#define CSS_PROPERTY_ABSPOS_CB (1u<<31)
// NOTE: Before adding any new CSS_PROPERTY_* flags here, we'll need to
// upgrade kFlagsTable to 64-bits -- see bug 1231384.
/**
* Types of animatable values.
*/
enum nsStyleAnimType {
// requires a custom implementation in
// StyleAnimationValue::ExtractComputedValue
eStyleAnimType_Custom,
// nsStyleCoord with animatable values
eStyleAnimType_Coord,
// same as Coord, except for one side of an nsStyleSides
// listed in the same order as the NS_STYLE_* constants
eStyleAnimType_Sides_Top,
eStyleAnimType_Sides_Right,
eStyleAnimType_Sides_Bottom,
eStyleAnimType_Sides_Left,
// similar, but for the *pair* of coord members of an nsStyleCorners
// for the relevant corner
eStyleAnimType_Corner_TopLeft,
eStyleAnimType_Corner_TopRight,
eStyleAnimType_Corner_BottomRight,
eStyleAnimType_Corner_BottomLeft,
// nscoord values
eStyleAnimType_nscoord,
// enumerated values (stored in a uint8_t)
// In order for a property to use this unit, _all_ of its enumerated values
// must be listed in its keyword table, so that any enumerated value can be
// converted into a string via a nsCSSValue of type eCSSUnit_Enumerated.
eStyleAnimType_EnumU8,
// float values
eStyleAnimType_float,
// nscolor values
eStyleAnimType_Color,
// nsStyleSVGPaint values
eStyleAnimType_PaintServer,
// RefPtr<nsCSSShadowArray> values
eStyleAnimType_Shadow,
// property not animatable
eStyleAnimType_None
};
class nsCSSProps {
public:
struct KTableEntry {
nsCSSKeyword mKeyword;
int16_t mValue;
};
static void AddRefTable(void);
static void ReleaseTable(void);
enum EnabledState {
// The default EnabledState: only enable what's enabled for all content,
// given the current values of preferences.
eEnabledForAllContent = 0,
// Enable a property in UA sheets.
eEnabledInUASheets = 0x01,
// Enable a property in chrome code.
eEnabledInChrome = 0x02,
// Special value to unconditionally enable a property. This implies all the
// bits above, but is strictly more than just their OR-ed union.
// This just skips any test so a property will be enabled even if it would
// have been disabled with all the bits above set.
eIgnoreEnabledState = 0xff
};
// Looks up the property with name aProperty and returns its corresponding
// nsCSSProperty value. If aProperty is the name of a custom property,
// then eCSSPropertyExtra_variable will be returned.
static nsCSSProperty LookupProperty(const nsAString& aProperty,
EnabledState aEnabled);
static nsCSSProperty LookupProperty(const nsACString& aProperty,
EnabledState aEnabled);
// As above, but looked up using a property's IDL name.
// eCSSPropertyExtra_variable won't be returned from these methods.
static nsCSSProperty LookupPropertyByIDLName(
const nsAString& aPropertyIDLName,
EnabledState aEnabled);
static nsCSSProperty LookupPropertyByIDLName(
const nsACString& aPropertyIDLName,
EnabledState aEnabled);
// Returns whether aProperty is a custom property name, i.e. begins with
// "--". 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(nsCSSProperty 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(nsCSSProperty 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 nsAFlatCString& GetStringValue(nsCSSProperty aProperty);
static const nsAFlatCString& GetStringValue(nsCSSFontDesc aFontDesc);
static const nsAFlatCString& 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 nsAFlatCString& LookupPropertyValue(nsCSSProperty 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[]);
// Ditto but as a string, return "" when not found.
static const nsAFlatCString& ValueToKeyword(int32_t aValue,
const KTableEntry 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(nsCSSProperty 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(nsCSSProperty 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(nsCSSProperty aProperty)
{
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT,
"out of range");
return nsCSSProps::kFlagsTable[aProperty] &
CSS_PROPERTY_VALUE_RESTRICTION_MASK;
}
private:
// Lives in nsCSSParser.cpp for the macros it depends on.
static const uint32_t kParserVariantTable[eCSSProperty_COUNT_no_shorthands];
public:
static inline uint32_t ParserVariant(nsCSSProperty 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 nsCSSProperty *const
kSubpropertyTable[eCSSProperty_COUNT - eCSSProperty_COUNT_no_shorthands];
public:
static inline
const nsCSSProperty * SubpropertyEntryFor(nsCSSProperty 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 nsCSSProperty * ShorthandsContaining(nsCSSProperty 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 nsCSSProperty 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 nsCSSProperty *gShorthandsContainingTable[eCSSProperty_COUNT_no_shorthands];
static nsCSSProperty* 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(nsCSSProperty 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 nsCSSProperty* 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.
* When called with a property that has the
* CSS_PROPERTY_LOGICAL_SINGLE_CUSTOM_VALMAPPING flag, the returned array
* will have one value preceding the sentinel.
* Otherwise it will have four values preceding the sentinel.
*
* (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 nsCSSProperty* LogicalGroup(nsCSSProperty 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(nsCSSProperty 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(nsCSSProperty aProperty)
{
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT,
"out of range");
return kIDLNameSortPositionTable[aProperty];
}
static bool IsEnabled(nsCSSProperty aProperty) {
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_with_aliases,
"out of range");
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(nsCSSProperty aProperty) {
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands,
"out of range");
return gPropertyUseCounter[aProperty];
}
static bool IsEnabled(nsCSSProperty aProperty, EnabledState aEnabled)
{
if (IsEnabled(aProperty)) {
return true;
}
if (aEnabled == eIgnoreEnabledState) {
return true;
}
if ((aEnabled & eEnabledInUASheets) &&
PropHasFlags(aProperty, CSS_PROPERTY_ENABLED_IN_UA_SHEETS))
{
return true;
}
if ((aEnabled & eEnabledInChrome) &&
PropHasFlags(aProperty, CSS_PROPERTY_ENABLED_IN_CHROME))
{
return true;
}
return false;
}
public:
// Storing the enabledstate_ value in an nsCSSProperty variable is a small hack
// to avoid needing a separate variable declaration for its real type
// (nsCSSProps::EnabledState), 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 nsCSSProperty *it_ = nsCSSProps::SubpropertyEntryFor(prop_), \
es_ = (nsCSSProperty) (enabledstate_); \
*it_ != eCSSProperty_UNKNOWN; ++it_) \
if (nsCSSProps::IsEnabled(*it_, (nsCSSProps::EnabledState) 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 kImageLayerOriginKTable[];
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 kBlendModeKTable[];
static const KTableEntry kBorderCollapseKTable[];
static const KTableEntry kBorderColorKTable[];
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 kClipShapeSizingKTable[];
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 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 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/last-baseline'
static const KTableEntry kAlignNormalStretchBaseline[]; // 'normal/stretch/baseline/last-baseline'
static const KTableEntry kAlignNormalBaseline[]; // 'normal/baseline/last-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 kListStyleKTable[];
static const KTableEntry kMaskTypeKTable[];
static const KTableEntry kMathVariantKTable[];
static const KTableEntry kMathDisplayKTable[];
static const KTableEntry kContainKTable[];
static const KTableEntry kContextOpacityKTable[];
static const KTableEntry kContextPatternKTable[];
static const KTableEntry kObjectFitKTable[];
static const KTableEntry kOrientKTable[];
static const KTableEntry kOutlineStyleKTable[];
static const KTableEntry kOutlineColorKTable[];
static const KTableEntry kOverflowKTable[];
static const KTableEntry kOverflowSubKTable[];
static const KTableEntry kOverflowClipBoxKTable[];
static const KTableEntry kPageBreakKTable[];
static const KTableEntry kPageBreakInsideKTable[];
static const KTableEntry kPageMarksKTable[];
static const KTableEntry kPageSizeKTable[];
static const KTableEntry kPitchKTable[];
static const KTableEntry kPointerEventsKTable[];
static const KTableEntry kPositionKTable[];
static const KTableEntry kRadialGradientShapeKTable[];
static const KTableEntry kRadialGradientSizeKTable[];
static const KTableEntry kRadialGradientLegacySizeKTable[];
static const KTableEntry kResizeKTable[];
static const KTableEntry kRubyAlignKTable[];
static const KTableEntry kRubyPositionKTable[];
static const KTableEntry kScrollBehaviorKTable[];
static const KTableEntry kScrollSnapTypeKTable[];
static const KTableEntry kSpeakKTable[];
static const KTableEntry kSpeakHeaderKTable[];
static const KTableEntry kSpeakNumeralKTable[];
static const KTableEntry kSpeakPunctuationKTable[];
static const KTableEntry kSpeechRateKTable[];
static const KTableEntry kStackSizingKTable[];
static const KTableEntry kTableLayoutKTable[];
// Not const because we modify its entries when the pref
// "layout.css.text-align-unsafe-value.enabled" changes:
static KTableEntry kTextAlignKTable[];
static KTableEntry kTextAlignLastKTable[];
static const KTableEntry kTextCombineUprightKTable[];
static const KTableEntry kTextDecorationLineKTable[];
static const KTableEntry kTextDecorationStyleKTable[];
static const KTableEntry kTextEmphasisPositionKTable[];
static const KTableEntry kTextEmphasisStyleFillKTable[];
static const KTableEntry kTextEmphasisStyleShapeKTable[];
static const KTableEntry kTextOrientationKTable[];
static const KTableEntry kTextOverflowKTable[];
static const KTableEntry kTextTransformKTable[];
static const KTableEntry kTouchActionKTable[];
static const KTableEntry kTopLayerKTable[];
static const KTableEntry kTransformBoxKTable[];
static const KTableEntry kTransitionTimingFunctionKTable[];
static const KTableEntry kUnicodeBidiKTable[];
static const KTableEntry kUserFocusKTable[];
static const KTableEntry kUserInputKTable[];
static const KTableEntry kUserModifyKTable[];
static const KTableEntry kUserSelectKTable[];
static const KTableEntry kVerticalAlignKTable[];
static const KTableEntry kVisibilityKTable[];
static const KTableEntry kVolumeKTable[];
static const KTableEntry kWhitespaceKTable[];
static const KTableEntry kWidthKTable[]; // also min-width, max-width
static const KTableEntry kWindowDraggingKTable[];
static const KTableEntry kWindowShadowKTable[];
static const KTableEntry kWordBreakKTable[];
static const KTableEntry kWordWrapKTable[];
static const KTableEntry kWritingModeKTable[];
};
inline nsCSSProps::EnabledState operator|(nsCSSProps::EnabledState a,
nsCSSProps::EnabledState b)
{
return nsCSSProps::EnabledState(int(a) | int(b));
}
inline nsCSSProps::EnabledState operator&(nsCSSProps::EnabledState a,
nsCSSProps::EnabledState b)
{
return nsCSSProps::EnabledState(int(a) & int(b));
}
inline nsCSSProps::EnabledState& operator|=(nsCSSProps::EnabledState& a,
nsCSSProps::EnabledState b)
{
return a = a | b;
}
inline nsCSSProps::EnabledState& operator&=(nsCSSProps::EnabledState& a,
nsCSSProps::EnabledState b)
{
return a = a & b;
}
#endif /* nsCSSProps_h___ */
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