/* -*- 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 "nsChangeHint.h" #include "nsCSSProperty.h" #include "nsStyleStruct.h" #include "nsCSSKeywords.h" // Flags for the kFlagsTable bitfield (flags_ in nsCSSPropList.h) // A property that is a *-ltr-source or *-rtl-source property for one of // the directional pseudo-shorthand properties. #define CSS_PROPERTY_DIRECTIONAL_SOURCE (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 property for which the computed value should generally be // reported as the computed value of a property of a different name. In // particular, the directional box properties (margin-left-value, etc.) // should be reported as being margin-left, etc. Call // nsCSSProps::OtherNameFor to get the other property. #define CSS_PROPERTY_REPORT_OTHER_NAME (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) MOZ_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 suppor the hashless hex color quirk in quirks mode? #define CSS_PROPERTY_HASHLESS_COLOR_QUIRK (1<<15) // Does this property suppor 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) /** * Types of animatable values. */ enum nsStyleAnimType { // requires a custom implementation in // nsStyleAnimation::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, // nsRefPtr values eStyleAnimType_Shadow, // property not animatable eStyleAnimType_None }; class nsCSSProps { public: static void AddRefTable(void); static void ReleaseTable(void); // Given a property string, return the enum value enum EnabledState { eEnabled, eAny }; static nsCSSProperty LookupProperty(const nsAString& aProperty, EnabledState aEnabled); static nsCSSProperty LookupProperty(const nsACString& aProperty, EnabledState aEnabled); static inline bool IsShorthand(nsCSSProperty aProperty) { NS_ABORT_IF_FALSE(0 <= aProperty && aProperty < eCSSProperty_COUNT, "out of range"); return (aProperty >= eCSSProperty_COUNT_no_shorthands); } // Same but for @font-face descriptors static nsCSSFontDesc LookupFontDesc(const nsAString& aProperty); static nsCSSFontDesc LookupFontDesc(const nsACString& aProperty); // Given a property enum, get the string value static const nsAFlatCString& GetStringValue(nsCSSProperty aProperty); static const nsAFlatCString& GetStringValue(nsCSSFontDesc aFontDesc); // Get the property to report the computed value of aProperty as being // the computed value of. aProperty must have the // CSS_PROPERTY_REPORT_OTHER_NAME bit set. static nsCSSProperty OtherNameFor(nsCSSProperty aProperty); // 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); // 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 int32_t 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 int32_t aTable[]); // Ditto but as a string, return "" when not found. static const nsAFlatCString& ValueToKeyword(int32_t aValue, const int32_t aTable[]); static const nsStyleStructID kSIDTable[eCSSProperty_COUNT_no_shorthands]; static const int32_t* 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) { NS_ABORT_IF_FALSE(0 <= aProperty && aProperty < eCSSProperty_COUNT, "out of range"); return (nsCSSProps::kFlagsTable[aProperty] & aFlags) == aFlags; } static inline uint32_t PropertyParseType(nsCSSProperty aProperty) { NS_ABORT_IF_FALSE(0 <= aProperty && aProperty < eCSSProperty_COUNT, "out of range"); return nsCSSProps::kFlagsTable[aProperty] & CSS_PROPERTY_PARSE_PROPERTY_MASK; } static inline uint32_t ValueRestrictions(nsCSSProperty aProperty) { NS_ABORT_IF_FALSE(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) { NS_ABORT_IF_FALSE(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) { NS_ABORT_IF_FALSE(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) { NS_ABORT_IF_FALSE(gShorthandsContainingPool, "uninitialized"); NS_ABORT_IF_FALSE(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) { NS_ABORT_IF_FALSE(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) { NS_ABORT_IF_FALSE(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands, "out of range"); return gPropertyIndexInStruct[aProperty]; } private: static bool gPropertyEnabled[eCSSProperty_COUNT]; public: static bool IsEnabled(nsCSSProperty aProperty) { NS_ABORT_IF_FALSE(0 <= aProperty && aProperty < eCSSProperty_COUNT, "out of range"); return gPropertyEnabled[aProperty]; } public: #define CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(iter_, prop_) \ for (const nsCSSProperty* iter_ = nsCSSProps::SubpropertyEntryFor(prop_); \ *iter_ != eCSSProperty_UNKNOWN; ++iter_) // Keyword/Enum value tables static const int32_t kAnimationDirectionKTable[]; static const int32_t kAnimationFillModeKTable[]; static const int32_t kAnimationIterationCountKTable[]; static const int32_t kAnimationPlayStateKTable[]; static const int32_t kAnimationTimingFunctionKTable[]; static const int32_t kAppearanceKTable[]; static const int32_t kAzimuthKTable[]; static const int32_t kBackfaceVisibilityKTable[]; static const int32_t kTransformStyleKTable[]; static const int32_t kBackgroundAttachmentKTable[]; static const int32_t kBackgroundInlinePolicyKTable[]; static const int32_t kBackgroundOriginKTable[]; static const int32_t kBackgroundPositionKTable[]; static const int32_t kBackgroundRepeatKTable[]; static const int32_t kBackgroundRepeatPartKTable[]; static const int32_t kBackgroundSizeKTable[]; static const int32_t kBorderCollapseKTable[]; static const int32_t kBorderColorKTable[]; static const int32_t kBorderImageRepeatKTable[]; static const int32_t kBorderImageSliceKTable[]; static const int32_t kBorderStyleKTable[]; static const int32_t kBorderWidthKTable[]; static const int32_t kBoxAlignKTable[]; static const int32_t kBoxDirectionKTable[]; static const int32_t kBoxOrientKTable[]; static const int32_t kBoxPackKTable[]; static const int32_t kDominantBaselineKTable[]; static const int32_t kFillRuleKTable[]; static const int32_t kImageRenderingKTable[]; static const int32_t kShapeRenderingKTable[]; static const int32_t kStrokeLinecapKTable[]; static const int32_t kStrokeLinejoinKTable[]; static const int32_t kStrokeObjectValueKTable[]; static const int32_t kVectorEffectKTable[]; static const int32_t kTextAnchorKTable[]; static const int32_t kTextRenderingKTable[]; static const int32_t kColorInterpolationKTable[]; static const int32_t kColumnFillKTable[]; static const int32_t kBoxPropSourceKTable[]; static const int32_t kBoxShadowTypeKTable[]; static const int32_t kBoxSizingKTable[]; static const int32_t kCaptionSideKTable[]; static const int32_t kClearKTable[]; static const int32_t kColorKTable[]; static const int32_t kContentKTable[]; static const int32_t kCursorKTable[]; static const int32_t kDirectionKTable[]; static const int32_t kDisplayKTable[]; static const int32_t kElevationKTable[]; static const int32_t kEmptyCellsKTable[]; #ifdef MOZ_FLEXBOX static const int32_t kAlignItemsKTable[]; static const int32_t kAlignSelfKTable[]; static const int32_t kFlexDirectionKTable[]; static const int32_t kJustifyContentKTable[]; #endif // MOZ_FLEXBOX static const int32_t kFloatKTable[]; static const int32_t kFloatEdgeKTable[]; static const int32_t kFontKTable[]; static const int32_t kFontSizeKTable[]; static const int32_t kFontStretchKTable[]; static const int32_t kFontStyleKTable[]; static const int32_t kFontVariantKTable[]; static const int32_t kFontWeightKTable[]; static const int32_t kIMEModeKTable[]; static const int32_t kLineHeightKTable[]; static const int32_t kListStylePositionKTable[]; static const int32_t kListStyleKTable[]; static const int32_t kObjectOpacityKTable[]; static const int32_t kObjectPatternKTable[]; static const int32_t kOrientKTable[]; static const int32_t kOutlineStyleKTable[]; static const int32_t kOutlineColorKTable[]; static const int32_t kOverflowKTable[]; static const int32_t kOverflowSubKTable[]; static const int32_t kPageBreakKTable[]; static const int32_t kPageBreakInsideKTable[]; static const int32_t kPageMarksKTable[]; static const int32_t kPageSizeKTable[]; static const int32_t kPitchKTable[]; static const int32_t kPointerEventsKTable[]; static const int32_t kPositionKTable[]; static const int32_t kRadialGradientShapeKTable[]; static const int32_t kRadialGradientSizeKTable[]; static const int32_t kRadialGradientLegacySizeKTable[]; static const int32_t kResizeKTable[]; static const int32_t kSpeakKTable[]; static const int32_t kSpeakHeaderKTable[]; static const int32_t kSpeakNumeralKTable[]; static const int32_t kSpeakPunctuationKTable[]; static const int32_t kSpeechRateKTable[]; static const int32_t kStackSizingKTable[]; static const int32_t kTableLayoutKTable[]; static const int32_t kTextAlignKTable[]; static const int32_t kTextAlignLastKTable[]; static const int32_t kTextBlinkKTable[]; static const int32_t kTextDecorationLineKTable[]; static const int32_t kTextDecorationStyleKTable[]; static const int32_t kTextOverflowKTable[]; static const int32_t kTextTransformKTable[]; static const int32_t kTransitionTimingFunctionKTable[]; static const int32_t kUnicodeBidiKTable[]; static const int32_t kUserFocusKTable[]; static const int32_t kUserInputKTable[]; static const int32_t kUserModifyKTable[]; static const int32_t kUserSelectKTable[]; static const int32_t kVerticalAlignKTable[]; static const int32_t kVisibilityKTable[]; static const int32_t kVolumeKTable[]; static const int32_t kWhitespaceKTable[]; static const int32_t kWidthKTable[]; // also min-width, max-width static const int32_t kWindowShadowKTable[]; static const int32_t kWordBreakKTable[]; static const int32_t kWordWrapKTable[]; static const int32_t kHyphensKTable[]; }; #endif /* nsCSSProps_h___ */