gecko-dev/layout/style/nsComputedDOMStyle.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* DOM object returned from element.getComputedStyle() */
#ifndef nsComputedDOMStyle_h__
#define nsComputedDOMStyle_h__
#include "mozilla/ArenaRefPtr.h"
#include "mozilla/ArenaRefPtrInlines.h"
#include "mozilla/Attributes.h"
#include "mozilla/StyleComplexColor.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/Element.h"
#include "nsCOMPtr.h"
#include "nsContentUtils.h"
#include "nscore.h"
#include "nsDOMCSSDeclaration.h"
#include "mozilla/ComputedStyle.h"
#include "nsIWeakReferenceUtils.h"
#include "mozilla/gfx/Types.h"
#include "nsCoord.h"
#include "nsColor.h"
#include "nsStyleStruct.h"
#include "mozilla/WritingModes.h"
namespace mozilla {
namespace dom {
class DocGroup;
class Element;
} // namespace dom
struct ComputedGridTrackInfo;
} // namespace mozilla
struct ComputedStyleMap;
struct nsCSSKTableEntry;
class nsIFrame;
class nsIPresShell;
class nsDOMCSSValueList;
struct nsMargin;
class nsROCSSPrimitiveValue;
class nsStyleCoord;
class nsStyleCorners;
struct nsStyleFilter;
class nsStyleGradient;
struct nsStyleImage;
class nsStyleSides;
struct nsTimingFunction;
class nsComputedDOMStyle final : public nsDOMCSSDeclaration
, public nsStubMutationObserver
{
private:
// Convenience typedefs:
typedef nsCSSKTableEntry KTableEntry;
typedef mozilla::dom::CSSValue CSSValue;
typedef mozilla::StyleGeometryBox StyleGeometryBox;
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS_AMBIGUOUS(nsComputedDOMStyle,
nsICSSDeclaration)
NS_DECL_NSIDOMCSSSTYLEDECLARATION_HELPER
nsresult GetPropertyValue(const nsCSSPropertyID aPropID,
nsAString& aValue) override;
nsresult SetPropertyValue(const nsCSSPropertyID aPropID,
const nsAString& aValue,
nsIPrincipal* aSubjectPrincipal) override;
void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aPropName) final;
enum StyleType {
eDefaultOnly, // Only includes UA and user sheets
eAll // Includes all stylesheets
};
nsComputedDOMStyle(mozilla::dom::Element* aElement,
const nsAString& aPseudoElt,
nsIDocument* aDocument,
StyleType aStyleType);
nsINode* GetParentObject() override
{
return mElement;
}
static already_AddRefed<mozilla::ComputedStyle>
GetComputedStyle(mozilla::dom::Element* aElement, nsAtom* aPseudo,
StyleType aStyleType = eAll);
static already_AddRefed<mozilla::ComputedStyle>
GetComputedStyleNoFlush(mozilla::dom::Element* aElement,
nsAtom* aPseudo,
StyleType aStyleType = eAll)
{
return DoGetComputedStyleNoFlush(aElement,
aPseudo,
nsContentUtils::GetPresShellForContent(aElement),
aStyleType);
}
static already_AddRefed<mozilla::ComputedStyle>
GetUnanimatedComputedStyleNoFlush(mozilla::dom::Element* aElement,
nsAtom* aPseudo);
// Helper for nsDOMWindowUtils::GetVisitedDependentComputedStyle
void SetExposeVisitedStyle(bool aExpose) {
NS_ASSERTION(aExpose != mExposeVisitedStyle, "should always be changing");
mExposeVisitedStyle = aExpose;
}
void GetCSSImageURLs(const nsAString& aPropertyName,
nsTArray<nsString>& aImageURLs,
mozilla::ErrorResult& aRv) final;
// nsDOMCSSDeclaration abstract methods which should never be called
// on a nsComputedDOMStyle object, but must be defined to avoid
// compile errors.
mozilla::DeclarationBlock* GetOrCreateCSSDeclaration(
Operation aOperation, mozilla::DeclarationBlock** aCreated) final;
virtual nsresult SetCSSDeclaration(mozilla::DeclarationBlock*,
mozilla::MutationClosureData*) override;
virtual nsIDocument* DocToUpdate() override;
nsDOMCSSDeclaration::ParsingEnvironment
GetParsingEnvironment(nsIPrincipal* aSubjectPrincipal) const final;
static already_AddRefed<nsROCSSPrimitiveValue>
MatrixToCSSValue(const mozilla::gfx::Matrix4x4& aMatrix);
static void RegisterPrefChangeCallbacks();
static void UnregisterPrefChangeCallbacks();
// nsIMutationObserver
NS_DECL_NSIMUTATIONOBSERVER_PARENTCHAINCHANGED
private:
virtual ~nsComputedDOMStyle();
void AssertFlushedPendingReflows() {
NS_ASSERTION(mFlushedPendingReflows,
"property getter should have been marked layout-dependent");
}
nsMargin GetAdjustedValuesForBoxSizing();
// Helper method for DoGetTextAlign[Last].
already_AddRefed<CSSValue> CreateTextAlignValue(uint8_t aAlign,
bool aAlignTrue,
const KTableEntry aTable[]);
// This indicates error by leaving mComputedStyle null.
void UpdateCurrentStyleSources(bool aNeedsLayoutFlush);
void ClearCurrentStyleSources();
// Helper functions called by UpdateCurrentStyleSources.
void ClearComputedStyle();
void SetResolvedComputedStyle(RefPtr<mozilla::ComputedStyle>&& aContext,
uint64_t aGeneration);
void SetFrameComputedStyle(mozilla::ComputedStyle* aStyle, uint64_t aGeneration);
static already_AddRefed<mozilla::ComputedStyle>
DoGetComputedStyleNoFlush(mozilla::dom::Element* aElement,
nsAtom* aPseudo,
nsIPresShell* aPresShell,
StyleType aStyleType);
#define STYLE_STRUCT(name_) \
const nsStyle##name_ * Style##name_() { \
return mComputedStyle->Style##name_(); \
}
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
already_AddRefed<CSSValue> GetEllipseRadii(const nsStyleCorners& aRadius,
mozilla::Corner aFullCorner);
already_AddRefed<CSSValue> GetOffsetWidthFor(mozilla::Side aSide);
already_AddRefed<CSSValue> GetAbsoluteOffset(mozilla::Side aSide);
already_AddRefed<CSSValue> GetRelativeOffset(mozilla::Side aSide);
already_AddRefed<CSSValue> GetStickyOffset(mozilla::Side aSide);
already_AddRefed<CSSValue> GetStaticOffset(mozilla::Side aSide);
already_AddRefed<CSSValue> GetPaddingWidthFor(mozilla::Side aSide);
already_AddRefed<CSSValue> GetBorderStyleFor(mozilla::Side aSide);
already_AddRefed<CSSValue> GetBorderWidthFor(mozilla::Side aSide);
already_AddRefed<CSSValue> GetBorderColorFor(mozilla::Side aSide);
already_AddRefed<CSSValue> GetMarginWidthFor(mozilla::Side aSide);
already_AddRefed<CSSValue> GetFallbackValue(const nsStyleSVGPaint* aPaint);
already_AddRefed<CSSValue> GetSVGPaintFor(bool aFill);
already_AddRefed<CSSValue> GetTransformValue(nsCSSValueSharedList* aSpecifiedTransform);
// Appends all aLineNames (may be empty) space-separated to aResult.
void AppendGridLineNames(nsString& aResult,
const nsTArray<nsString>& aLineNames);
// Appends aLineNames as a CSSValue* to aValueList. If aLineNames is empty
// a value ("[]") is only appended if aSuppressEmptyList is false.
void AppendGridLineNames(nsDOMCSSValueList* aValueList,
const nsTArray<nsString>& aLineNames,
bool aSuppressEmptyList = true);
// Appends aLineNames1/2 (if non-empty) as a CSSValue* to aValueList.
void AppendGridLineNames(nsDOMCSSValueList* aValueList,
const nsTArray<nsString>& aLineNames1,
const nsTArray<nsString>& aLineNames2);
already_AddRefed<CSSValue> GetGridTrackSize(const nsStyleCoord& aMinSize,
const nsStyleCoord& aMaxSize);
already_AddRefed<CSSValue> GetGridTemplateColumnsRows(
const nsStyleGridTemplate& aTrackList,
const mozilla::ComputedGridTrackInfo* aTrackInfo);
already_AddRefed<CSSValue> GetGridLine(const nsStyleGridLine& aGridLine);
bool GetLineHeightCoord(nscoord& aCoord);
already_AddRefed<CSSValue> GetCSSShadowArray(nsCSSShadowArray* aArray,
bool aIsBoxShadow);
void GetCSSGradientString(const nsStyleGradient* aGradient,
nsAString& aString);
void GetImageRectString(nsIURI* aURI,
const nsStyleSides& aCropRect,
nsString& aString);
already_AddRefed<CSSValue> GetScrollSnapPoints(const nsStyleCoord& aCoord);
void AppendTimingFunction(nsDOMCSSValueList *aValueList,
const nsTimingFunction& aTimingFunction);
bool ShouldHonorMinSizeAutoInAxis(mozilla::PhysicalAxis aAxis);
/* Properties queryable as CSSValues.
* To avoid a name conflict with nsIDOM*CSS2Properties, these are all
* DoGetXXX instead of GetXXX.
*/
/* Box properties */
already_AddRefed<CSSValue> DoGetBoxFlex();
already_AddRefed<CSSValue> DoGetWidth();
already_AddRefed<CSSValue> DoGetHeight();
already_AddRefed<CSSValue> DoGetMaxHeight();
already_AddRefed<CSSValue> DoGetMaxWidth();
already_AddRefed<CSSValue> DoGetMinHeight();
already_AddRefed<CSSValue> DoGetMinWidth();
already_AddRefed<CSSValue> DoGetObjectPosition();
already_AddRefed<CSSValue> DoGetLeft();
already_AddRefed<CSSValue> DoGetTop();
already_AddRefed<CSSValue> DoGetRight();
already_AddRefed<CSSValue> DoGetBottom();
/* Color */
already_AddRefed<CSSValue> DoGetColor();
/* Font properties */
already_AddRefed<CSSValue> DoGetOsxFontSmoothing();
already_AddRefed<CSSValue> DoGetFontVariant();
/* Grid properties */
already_AddRefed<CSSValue> DoGetGridAutoFlow();
already_AddRefed<CSSValue> DoGetGridAutoColumns();
already_AddRefed<CSSValue> DoGetGridAutoRows();
already_AddRefed<CSSValue> DoGetGridTemplateAreas();
already_AddRefed<CSSValue> DoGetGridTemplateColumns();
already_AddRefed<CSSValue> DoGetGridTemplateRows();
already_AddRefed<CSSValue> DoGetGridColumnStart();
already_AddRefed<CSSValue> DoGetGridColumnEnd();
already_AddRefed<CSSValue> DoGetGridRowStart();
already_AddRefed<CSSValue> DoGetGridRowEnd();
/* StyleImageLayer properties */
already_AddRefed<CSSValue> DoGetImageLayerImage(const nsStyleImageLayers& aLayers);
already_AddRefed<CSSValue> DoGetImageLayerPosition(const nsStyleImageLayers& aLayers);
already_AddRefed<CSSValue> DoGetImageLayerPositionX(const nsStyleImageLayers& aLayers);
already_AddRefed<CSSValue> DoGetImageLayerPositionY(const nsStyleImageLayers& aLayers);
already_AddRefed<CSSValue> DoGetImageLayerRepeat(const nsStyleImageLayers& aLayers);
already_AddRefed<CSSValue> DoGetImageLayerSize(const nsStyleImageLayers& aLayers);
/* Background properties */
already_AddRefed<CSSValue> DoGetBackgroundImage();
already_AddRefed<CSSValue> DoGetBackgroundPosition();
already_AddRefed<CSSValue> DoGetBackgroundPositionX();
already_AddRefed<CSSValue> DoGetBackgroundPositionY();
already_AddRefed<CSSValue> DoGetBackgroundRepeat();
already_AddRefed<CSSValue> DoGetBackgroundSize();
/* Mask properties */
already_AddRefed<CSSValue> DoGetMask();
already_AddRefed<CSSValue> DoGetMaskImage();
already_AddRefed<CSSValue> DoGetMaskPosition();
already_AddRefed<CSSValue> DoGetMaskPositionX();
already_AddRefed<CSSValue> DoGetMaskPositionY();
already_AddRefed<CSSValue> DoGetMaskRepeat();
already_AddRefed<CSSValue> DoGetMaskSize();
/* Padding properties */
already_AddRefed<CSSValue> DoGetPaddingTop();
already_AddRefed<CSSValue> DoGetPaddingBottom();
already_AddRefed<CSSValue> DoGetPaddingLeft();
already_AddRefed<CSSValue> DoGetPaddingRight();
/* Table Properties */
already_AddRefed<CSSValue> DoGetBorderSpacing();
already_AddRefed<CSSValue> DoGetVerticalAlign();
/* Border Properties */
already_AddRefed<CSSValue> DoGetBorderTopStyle();
already_AddRefed<CSSValue> DoGetBorderBottomStyle();
already_AddRefed<CSSValue> DoGetBorderLeftStyle();
already_AddRefed<CSSValue> DoGetBorderRightStyle();
already_AddRefed<CSSValue> DoGetBorderTopWidth();
already_AddRefed<CSSValue> DoGetBorderBottomWidth();
already_AddRefed<CSSValue> DoGetBorderLeftWidth();
already_AddRefed<CSSValue> DoGetBorderRightWidth();
already_AddRefed<CSSValue> DoGetBorderBottomLeftRadius();
already_AddRefed<CSSValue> DoGetBorderBottomRightRadius();
already_AddRefed<CSSValue> DoGetBorderTopLeftRadius();
already_AddRefed<CSSValue> DoGetBorderTopRightRadius();
/* Border Image */
already_AddRefed<CSSValue> DoGetBorderImageSource();
already_AddRefed<CSSValue> DoGetBorderImageSlice();
already_AddRefed<CSSValue> DoGetBorderImageWidth();
already_AddRefed<CSSValue> DoGetBorderImageOutset();
already_AddRefed<CSSValue> DoGetBorderImageRepeat();
/* Box Shadow */
already_AddRefed<CSSValue> DoGetBoxShadow();
/* Window Shadow */
/* Margin Properties */
already_AddRefed<CSSValue> DoGetMarginTopWidth();
already_AddRefed<CSSValue> DoGetMarginBottomWidth();
already_AddRefed<CSSValue> DoGetMarginLeftWidth();
already_AddRefed<CSSValue> DoGetMarginRightWidth();
/* Outline Properties */
already_AddRefed<CSSValue> DoGetOutlineWidth();
already_AddRefed<CSSValue> DoGetOutlineStyle();
already_AddRefed<CSSValue> DoGetOutlineRadiusBottomLeft();
already_AddRefed<CSSValue> DoGetOutlineRadiusBottomRight();
already_AddRefed<CSSValue> DoGetOutlineRadiusTopLeft();
already_AddRefed<CSSValue> DoGetOutlineRadiusTopRight();
/* Quotes Properties */
already_AddRefed<CSSValue> DoGetQuotes();
/* z-index */
already_AddRefed<CSSValue> DoGetZIndex();
/* List properties */
already_AddRefed<CSSValue> DoGetImageRegion();
/* Text Properties */
already_AddRefed<CSSValue> DoGetInitialLetter();
already_AddRefed<CSSValue> DoGetLineHeight();
already_AddRefed<CSSValue> DoGetTextAlign();
already_AddRefed<CSSValue> DoGetTextDecoration();
already_AddRefed<CSSValue> DoGetTextDecorationColor();
already_AddRefed<CSSValue> DoGetTextDecorationLine();
already_AddRefed<CSSValue> DoGetTextDecorationStyle();
already_AddRefed<CSSValue> DoGetTextEmphasisPosition();
already_AddRefed<CSSValue> DoGetTextEmphasisStyle();
already_AddRefed<CSSValue> DoGetTextOverflow();
already_AddRefed<CSSValue> DoGetTextShadow();
already_AddRefed<CSSValue> DoGetLetterSpacing();
already_AddRefed<CSSValue> DoGetWordSpacing();
already_AddRefed<CSSValue> DoGetTabSize();
already_AddRefed<CSSValue> DoGetWebkitTextStrokeWidth();
/* Visibility properties */
/* Direction properties */
/* Display properties */
already_AddRefed<CSSValue> DoGetBinding();
already_AddRefed<CSSValue> DoGetDisplay();
already_AddRefed<CSSValue> DoGetContain();
already_AddRefed<CSSValue> DoGetClip();
already_AddRefed<CSSValue> DoGetWillChange();
already_AddRefed<CSSValue> DoGetOverflow();
already_AddRefed<CSSValue> DoGetOverflowY();
already_AddRefed<CSSValue> DoGetOverflowClipBoxBlock();
already_AddRefed<CSSValue> DoGetOverflowClipBoxInline();
already_AddRefed<CSSValue> DoGetTouchAction();
already_AddRefed<CSSValue> DoGetTransform();
already_AddRefed<CSSValue> DoGetTranslate();
already_AddRefed<CSSValue> DoGetRotate();
already_AddRefed<CSSValue> DoGetScale();
already_AddRefed<CSSValue> DoGetTransformOrigin();
already_AddRefed<CSSValue> DoGetPerspective();
already_AddRefed<CSSValue> DoGetPerspectiveOrigin();
already_AddRefed<CSSValue> DoGetTransformStyle();
already_AddRefed<CSSValue> DoGetOverscrollBehaviorX();
already_AddRefed<CSSValue> DoGetOverscrollBehaviorY();
already_AddRefed<CSSValue> DoGetScrollSnapTypeX();
already_AddRefed<CSSValue> DoGetScrollSnapTypeY();
already_AddRefed<CSSValue> DoGetScrollSnapPointsX();
already_AddRefed<CSSValue> DoGetScrollSnapPointsY();
already_AddRefed<CSSValue> DoGetScrollSnapDestination();
already_AddRefed<CSSValue> DoGetScrollSnapCoordinate();
already_AddRefed<CSSValue> DoGetScrollbarFaceColor();
already_AddRefed<CSSValue> DoGetScrollbarTrackColor();
already_AddRefed<CSSValue> DoGetShapeOutside();
/* User interface properties */
already_AddRefed<CSSValue> DoGetCaretColor();
already_AddRefed<CSSValue> DoGetCursor();
already_AddRefed<CSSValue> DoGetForceBrokenImageIcon();
/* Column properties */
already_AddRefed<CSSValue> DoGetColumnCount();
already_AddRefed<CSSValue> DoGetColumnWidth();
already_AddRefed<CSSValue> DoGetColumnRuleWidth();
/* CSS Transitions */
already_AddRefed<CSSValue> DoGetTransitionProperty();
already_AddRefed<CSSValue> DoGetTransitionDuration();
already_AddRefed<CSSValue> DoGetTransitionDelay();
already_AddRefed<CSSValue> DoGetTransitionTimingFunction();
/* CSS Animations */
already_AddRefed<CSSValue> DoGetAnimationName();
already_AddRefed<CSSValue> DoGetAnimationDuration();
already_AddRefed<CSSValue> DoGetAnimationDelay();
already_AddRefed<CSSValue> DoGetAnimationTimingFunction();
already_AddRefed<CSSValue> DoGetAnimationIterationCount();
/* CSS Flexbox properties */
already_AddRefed<CSSValue> DoGetFlexBasis();
already_AddRefed<CSSValue> DoGetFlexGrow();
already_AddRefed<CSSValue> DoGetFlexShrink();
/* CSS Flexbox/Grid properties */
/* CSS Box Alignment properties */
already_AddRefed<CSSValue> DoGetAlignContent();
already_AddRefed<CSSValue> DoGetAlignItems();
already_AddRefed<CSSValue> DoGetAlignSelf();
already_AddRefed<CSSValue> DoGetJustifyContent();
already_AddRefed<CSSValue> DoGetJustifyItems();
already_AddRefed<CSSValue> DoGetJustifySelf();
already_AddRefed<CSSValue> DoGetColumnGap();
already_AddRefed<CSSValue> DoGetRowGap();
/* SVG properties */
already_AddRefed<CSSValue> DoGetFill();
already_AddRefed<CSSValue> DoGetStroke();
already_AddRefed<CSSValue> DoGetMarkerEnd();
already_AddRefed<CSSValue> DoGetMarkerMid();
already_AddRefed<CSSValue> DoGetMarkerStart();
already_AddRefed<CSSValue> DoGetStrokeDasharray();
already_AddRefed<CSSValue> DoGetStrokeDashoffset();
already_AddRefed<CSSValue> DoGetStrokeWidth();
already_AddRefed<CSSValue> DoGetFillOpacity();
already_AddRefed<CSSValue> DoGetStrokeMiterlimit();
already_AddRefed<CSSValue> DoGetStrokeOpacity();
already_AddRefed<CSSValue> DoGetClipPath();
already_AddRefed<CSSValue> DoGetFilter();
already_AddRefed<CSSValue> DoGetPaintOrder();
// For working around a MSVC bug. See related comment in
// GenerateComputedDOMStyleGenerated.py.
already_AddRefed<CSSValue> DummyGetter();
/* Helper functions */
void SetToRGBAColor(nsROCSSPrimitiveValue* aValue, nscolor aColor);
void SetValueFromComplexColor(nsROCSSPrimitiveValue* aValue,
const mozilla::StyleComplexColor& aColor);
void SetValueForWidgetColor(nsROCSSPrimitiveValue* aValue,
const mozilla::StyleComplexColor& aColor,
mozilla::StyleAppearance aWidgetType);
void SetValueToStyleImage(const nsStyleImage& aStyleImage,
nsROCSSPrimitiveValue* aValue);
void SetValueToPositionCoord(const mozilla::Position::Coord& aCoord,
nsROCSSPrimitiveValue* aValue);
void SetValueToPosition(const mozilla::Position& aPosition,
nsDOMCSSValueList* aValueList);
void SetValueToURLValue(const mozilla::css::URLValueData* aURL,
nsROCSSPrimitiveValue* aValue);
/**
* A method to get a percentage base for a percentage value. Returns true
* if a percentage base value was determined, false otherwise.
*/
typedef bool (nsComputedDOMStyle::*PercentageBaseGetter)(nscoord&);
/**
* Method to set aValue to aCoord. If aCoord is a percentage value and
* aPercentageBaseGetter is not null, aPercentageBaseGetter is called. If it
* returns true, the percentage base it outputs in its out param is used
* to compute an nscoord value. If the getter is null or returns false,
* the percent value of aCoord is set as a percent value on aValue. aTable,
* if not null, is the keyword table to handle eStyleUnit_Enumerated. When
* calling SetAppUnits on aValue (for coord or percent values), the value
* passed in will be clamped to be no less than aMinAppUnits and no more than
* aMaxAppUnits.
*
* XXXbz should caller pass in some sort of bitfield indicating which units
* can be expected or something?
*/
void SetValueToCoord(nsROCSSPrimitiveValue* aValue,
const nsStyleCoord& aCoord,
bool aClampNegativeCalc,
PercentageBaseGetter aPercentageBaseGetter = nullptr,
const KTableEntry aTable[] = nullptr,
nscoord aMinAppUnits = nscoord_MIN,
nscoord aMaxAppUnits = nscoord_MAX);
/**
* If aCoord is a eStyleUnit_Coord returns the nscoord. If it's
* eStyleUnit_Percent, attempts to resolve the percentage base and returns
* the resulting nscoord. If it's some other unit or a percentge base can't
* be determined, returns aDefaultValue.
*/
nscoord StyleCoordToNSCoord(const nsStyleCoord& aCoord,
PercentageBaseGetter aPercentageBaseGetter,
nscoord aDefaultValue,
bool aClampNegativeCalc);
/**
* Append coord values from four sides. It omits values when possible.
*/
void AppendFourSideCoordValues(nsDOMCSSValueList* aList,
const nsStyleSides& aValues);
bool GetCBContentWidth(nscoord& aWidth);
bool GetCBContentHeight(nscoord& aWidth);
bool GetScrollFrameContentWidth(nscoord& aWidth);
bool GetScrollFrameContentHeight(nscoord& aHeight);
bool GetFrameBoundsWidthForTransform(nscoord &aWidth);
bool GetFrameBoundsHeightForTransform(nscoord &aHeight);
bool GetFrameBorderRectWidth(nscoord& aWidth);
bool GetFrameBorderRectHeight(nscoord& aHeight);
/* Helper functions for computing and serializing a nsStyleCoord. */
void SetCssTextToCoord(nsAString& aCssText, const nsStyleCoord& aCoord,
bool aClampNegativeCalc);
already_AddRefed<CSSValue> CreatePrimitiveValueForStyleFilter(
const nsStyleFilter& aStyleFilter);
already_AddRefed<CSSValue>
GetShapeSource(const mozilla::StyleShapeSource& aShapeSource,
const KTableEntry aBoxKeywordTable[]);
template<typename ReferenceBox>
already_AddRefed<CSSValue>
CreatePrimitiveValueForShapeSource(
const mozilla::UniquePtr<mozilla::StyleBasicShape>& aStyleBasicShape,
ReferenceBox aReferenceBox,
const KTableEntry aBoxKeywordTable[]);
// Helper function for computing basic shape styles.
already_AddRefed<CSSValue> CreatePrimitiveValueForBasicShape(
const mozilla::UniquePtr<mozilla::StyleBasicShape>& aStyleBasicShape);
void BoxValuesToString(nsAString& aString,
const nsTArray<nsStyleCoord>& aBoxValues,
bool aClampNegativeCalc);
void BasicShapeRadiiToString(nsAString& aCssText,
const nsStyleCorners& aCorners);
// Find out if we can safely skip flushing for aDocument (i.e. pending
// restyles does not affect mContent).
bool NeedsToFlush(nsIDocument* aDocument) const;
static ComputedStyleMap* GetComputedStyleMap();
// We don't really have a good immutable representation of "presentation".
// Given the way GetComputedStyle is currently used, we should just grab the
// presshell, if any, from the document.
nsWeakPtr mDocumentWeak;
RefPtr<mozilla::dom::Element> mElement;
/**
* Strong reference to the ComputedStyle we access data from. This can be
* either a ComputedStyle we resolved ourselves or a ComputedStyle we got
* from our frame.
*
* If we got the ComputedStyle from the frame, we clear out mComputedStyle
* in ClearCurrentStyleSources. If we resolved one ourselves, then
* ClearCurrentStyleSources leaves it in mComputedStyle for use the next
* time this nsComputedDOMStyle object is queried. UpdateCurrentStyleSources
* in this case will check that the ComputedStyle is still valid to be used,
* by checking whether flush styles results in any restyles having been
* processed.
*
* Since an ArenaRefPtr is used to hold the ComputedStyle, it will be cleared
* if the pres arena from which it was allocated goes away.
*/
mozilla::ArenaRefPtr<mozilla::ComputedStyle> mComputedStyle;
RefPtr<nsAtom> mPseudo;
/*
* While computing style data, the primary frame for mContent --- named "outer"
* because we should use it to compute positioning data. Null
* otherwise.
*/
nsIFrame* mOuterFrame;
/*
* While computing style data, the "inner frame" for mContent --- the frame
* which we should use to compute margin, border, padding and content data. Null
* otherwise.
*/
nsIFrame* mInnerFrame;
/*
* While computing style data, the presshell we're working with. Null
* otherwise.
*/
nsIPresShell* mPresShell;
/*
* The kind of styles we should be returning.
*/
StyleType mStyleType;
/**
* The nsComputedDOMStyle generation at the time we last resolved a style
* context and stored it in mComputedStyle.
*/
uint64_t mComputedStyleGeneration;
bool mExposeVisitedStyle;
/**
* Whether we resolved a ComputedStyle last time we called
* UpdateCurrentStyleSources. Initially false.
*/
bool mResolvedComputedStyle;
#ifdef DEBUG
bool mFlushedPendingReflows;
#endif
friend struct ComputedStyleMap;
};
already_AddRefed<nsComputedDOMStyle>
NS_NewComputedDOMStyle(mozilla::dom::Element* aElement,
const nsAString& aPseudoElt,
nsIDocument* aDocument,
nsComputedDOMStyle::StyleType aStyleType =
nsComputedDOMStyle::eAll);
#endif /* nsComputedDOMStyle_h__ */