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1 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 : /* This Source Code Form is subject to the terms of the Mozilla Public
4 : * License, v. 2.0. If a copy of the MPL was not distributed with this
5 : * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 :
7 : /* DOM object returned from element.getComputedStyle() */
8 :
9 : #ifndef nsComputedDOMStyle_h__
10 : #define nsComputedDOMStyle_h__
11 :
12 : #include "mozilla/ArenaRefPtr.h"
13 : #include "mozilla/ArenaRefPtrInlines.h"
14 : #include "mozilla/Attributes.h"
15 : #include "mozilla/StyleComplexColor.h"
16 : #include "mozilla/UniquePtr.h"
17 : #include "mozilla/dom/Element.h"
18 : #include "nsCOMPtr.h"
19 : #include "nsContentUtils.h"
20 : #include "nscore.h"
21 : #include "nsDOMCSSDeclaration.h"
22 : #include "mozilla/ComputedStyle.h"
23 : #include "nsIWeakReferenceUtils.h"
24 : #include "mozilla/gfx/Types.h"
25 : #include "nsCoord.h"
26 : #include "nsColor.h"
27 : #include "nsStyleStruct.h"
28 : #include "mozilla/WritingModes.h"
29 :
30 : namespace mozilla {
31 : namespace dom {
32 : class DocGroup;
33 : class Element;
34 : } // namespace dom
35 : struct ComputedGridTrackInfo;
36 : } // namespace mozilla
37 :
38 : struct ComputedStyleMap;
39 : struct nsCSSKTableEntry;
40 : class nsIFrame;
41 : class nsIPresShell;
42 : class nsDOMCSSValueList;
43 : struct nsMargin;
44 : class nsROCSSPrimitiveValue;
45 : class nsStyleCoord;
46 : class nsStyleCorners;
47 : struct nsStyleFilter;
48 : class nsStyleGradient;
49 : struct nsStyleImage;
50 : class nsStyleSides;
51 : struct nsTimingFunction;
52 :
53 : class nsComputedDOMStyle final : public nsDOMCSSDeclaration
54 : , public nsStubMutationObserver
55 : {
56 : private:
57 : // Convenience typedefs:
58 : typedef nsCSSKTableEntry KTableEntry;
59 : typedef mozilla::dom::CSSValue CSSValue;
60 : typedef mozilla::StyleGeometryBox StyleGeometryBox;
61 :
62 : public:
63 : NS_DECL_CYCLE_COLLECTING_ISUPPORTS
64 18 : NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS_AMBIGUOUS(nsComputedDOMStyle,
65 : nsICSSDeclaration)
66 :
67 : NS_DECL_NSIDOMCSSSTYLEDECLARATION_HELPER
68 : nsresult GetPropertyValue(const nsCSSPropertyID aPropID,
69 : nsAString& aValue) override;
70 : nsresult SetPropertyValue(const nsCSSPropertyID aPropID,
71 : const nsAString& aValue,
72 : nsIPrincipal* aSubjectPrincipal) override;
73 :
74 : void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aPropName) final;
75 :
76 : enum StyleType {
77 : eDefaultOnly, // Only includes UA and user sheets
78 : eAll // Includes all stylesheets
79 : };
80 :
81 : nsComputedDOMStyle(mozilla::dom::Element* aElement,
82 : const nsAString& aPseudoElt,
83 : nsIPresShell* aPresShell,
84 : StyleType aStyleType);
85 :
86 6 : virtual nsINode *GetParentObject() override
87 : {
88 12 : return mContent;
89 : }
90 :
91 : static already_AddRefed<mozilla::ComputedStyle>
92 : GetComputedStyle(mozilla::dom::Element* aElement, nsAtom* aPseudo,
93 : StyleType aStyleType = eAll);
94 :
95 : static already_AddRefed<mozilla::ComputedStyle>
96 143 : GetComputedStyleNoFlush(mozilla::dom::Element* aElement,
97 : nsAtom* aPseudo,
98 : StyleType aStyleType = eAll)
99 : {
100 : return DoGetComputedStyleNoFlush(aElement,
101 : aPseudo,
102 : nsContentUtils::GetPresShellForContent(aElement),
103 143 : aStyleType);
104 : }
105 :
106 : static already_AddRefed<mozilla::ComputedStyle>
107 : GetUnanimatedComputedStyleNoFlush(mozilla::dom::Element* aElement,
108 : nsAtom* aPseudo);
109 :
110 : // Helper for nsDOMWindowUtils::GetVisitedDependentComputedStyle
111 0 : void SetExposeVisitedStyle(bool aExpose) {
112 0 : NS_ASSERTION(aExpose != mExposeVisitedStyle, "should always be changing");
113 0 : mExposeVisitedStyle = aExpose;
114 0 : }
115 :
116 :
117 : void GetCSSImageURLs(const nsAString& aPropertyName,
118 : nsTArray<nsString>& aImageURLs,
119 : mozilla::ErrorResult& aRv) final;
120 :
121 : // nsDOMCSSDeclaration abstract methods which should never be called
122 : // on a nsComputedDOMStyle object, but must be defined to avoid
123 : // compile errors.
124 : virtual mozilla::DeclarationBlock* GetCSSDeclaration(Operation) override;
125 : virtual nsresult SetCSSDeclaration(mozilla::DeclarationBlock*) override;
126 : virtual nsIDocument* DocToUpdate() override;
127 :
128 : nsDOMCSSDeclaration::ParsingEnvironment
129 : GetParsingEnvironment(nsIPrincipal* aSubjectPrincipal) const final;
130 :
131 : static already_AddRefed<nsROCSSPrimitiveValue>
132 : MatrixToCSSValue(const mozilla::gfx::Matrix4x4& aMatrix);
133 :
134 : static void RegisterPrefChangeCallbacks();
135 : static void UnregisterPrefChangeCallbacks();
136 :
137 : // nsIMutationObserver
138 : NS_DECL_NSIMUTATIONOBSERVER_PARENTCHAINCHANGED
139 :
140 : private:
141 : virtual ~nsComputedDOMStyle();
142 :
143 0 : void AssertFlushedPendingReflows() {
144 0 : NS_ASSERTION(mFlushedPendingReflows,
145 : "property getter should have been marked layout-dependent");
146 0 : }
147 :
148 : nsMargin GetAdjustedValuesForBoxSizing();
149 :
150 : // Helper method for DoGetTextAlign[Last].
151 : already_AddRefed<CSSValue> CreateTextAlignValue(uint8_t aAlign,
152 : bool aAlignTrue,
153 : const KTableEntry aTable[]);
154 : // This indicates error by leaving mComputedStyle null.
155 : void UpdateCurrentStyleSources(bool aNeedsLayoutFlush);
156 : void ClearCurrentStyleSources();
157 :
158 : // Helper functions called by UpdateCurrentStyleSources.
159 : void ClearComputedStyle();
160 : void SetResolvedComputedStyle(RefPtr<mozilla::ComputedStyle>&& aContext,
161 : uint64_t aGeneration);
162 : void SetFrameComputedStyle(mozilla::ComputedStyle* aStyle, uint64_t aGeneration);
163 :
164 : static already_AddRefed<mozilla::ComputedStyle>
165 : DoGetComputedStyleNoFlush(mozilla::dom::Element* aElement,
166 : nsAtom* aPseudo,
167 : nsIPresShell* aPresShell,
168 : StyleType aStyleType);
169 :
170 : #define STYLE_STRUCT(name_) \
171 : const nsStyle##name_ * Style##name_() { \
172 : return mComputedStyle->Style##name_(); \
173 : }
174 : #include "nsStyleStructList.h"
175 : #undef STYLE_STRUCT
176 :
177 : already_AddRefed<CSSValue> GetEllipseRadii(const nsStyleCorners& aRadius,
178 : mozilla::Corner aFullCorner);
179 :
180 : already_AddRefed<CSSValue> GetOffsetWidthFor(mozilla::Side aSide);
181 :
182 : already_AddRefed<CSSValue> GetAbsoluteOffset(mozilla::Side aSide);
183 :
184 : already_AddRefed<CSSValue> GetRelativeOffset(mozilla::Side aSide);
185 :
186 : already_AddRefed<CSSValue> GetStickyOffset(mozilla::Side aSide);
187 :
188 : already_AddRefed<CSSValue> GetStaticOffset(mozilla::Side aSide);
189 :
190 : already_AddRefed<CSSValue> GetPaddingWidthFor(mozilla::Side aSide);
191 :
192 : already_AddRefed<CSSValue> GetBorderStyleFor(mozilla::Side aSide);
193 :
194 : already_AddRefed<CSSValue> GetBorderWidthFor(mozilla::Side aSide);
195 :
196 : already_AddRefed<CSSValue> GetBorderColorFor(mozilla::Side aSide);
197 :
198 : already_AddRefed<CSSValue> GetMarginWidthFor(mozilla::Side aSide);
199 :
200 : already_AddRefed<CSSValue> GetFallbackValue(const nsStyleSVGPaint* aPaint);
201 :
202 : already_AddRefed<CSSValue> GetSVGPaintFor(bool aFill);
203 :
204 : already_AddRefed<CSSValue> GetTransformValue(nsCSSValueSharedList* aSpecifiedTransform);
205 :
206 : // Appends all aLineNames (may be empty) space-separated to aResult.
207 : void AppendGridLineNames(nsString& aResult,
208 : const nsTArray<nsString>& aLineNames);
209 : // Appends aLineNames as a CSSValue* to aValueList. If aLineNames is empty
210 : // a value ("[]") is only appended if aSuppressEmptyList is false.
211 : void AppendGridLineNames(nsDOMCSSValueList* aValueList,
212 : const nsTArray<nsString>& aLineNames,
213 : bool aSuppressEmptyList = true);
214 : // Appends aLineNames1/2 (if non-empty) as a CSSValue* to aValueList.
215 : void AppendGridLineNames(nsDOMCSSValueList* aValueList,
216 : const nsTArray<nsString>& aLineNames1,
217 : const nsTArray<nsString>& aLineNames2);
218 : already_AddRefed<CSSValue> GetGridTrackSize(const nsStyleCoord& aMinSize,
219 : const nsStyleCoord& aMaxSize);
220 : already_AddRefed<CSSValue> GetGridTemplateColumnsRows(
221 : const nsStyleGridTemplate& aTrackList,
222 : const mozilla::ComputedGridTrackInfo* aTrackInfo);
223 : already_AddRefed<CSSValue> GetGridLine(const nsStyleGridLine& aGridLine);
224 :
225 : bool GetLineHeightCoord(nscoord& aCoord);
226 :
227 : already_AddRefed<CSSValue> GetCSSShadowArray(nsCSSShadowArray* aArray,
228 : const nscolor& aDefaultColor,
229 : bool aIsBoxShadow);
230 :
231 : void GetCSSGradientString(const nsStyleGradient* aGradient,
232 : nsAString& aString);
233 : void GetImageRectString(nsIURI* aURI,
234 : const nsStyleSides& aCropRect,
235 : nsString& aString);
236 : already_AddRefed<CSSValue> GetScrollSnapPoints(const nsStyleCoord& aCoord);
237 : void AppendTimingFunction(nsDOMCSSValueList *aValueList,
238 : const nsTimingFunction& aTimingFunction);
239 :
240 : bool ShouldHonorMinSizeAutoInAxis(mozilla::PhysicalAxis aAxis);
241 :
242 : /* Properties queryable as CSSValues.
243 : * To avoid a name conflict with nsIDOM*CSS2Properties, these are all
244 : * DoGetXXX instead of GetXXX.
245 : */
246 :
247 : already_AddRefed<CSSValue> DoGetAppearance();
248 :
249 : /* Box properties */
250 : already_AddRefed<CSSValue> DoGetBoxAlign();
251 : already_AddRefed<CSSValue> DoGetBoxDecorationBreak();
252 : already_AddRefed<CSSValue> DoGetBoxDirection();
253 : already_AddRefed<CSSValue> DoGetBoxFlex();
254 : already_AddRefed<CSSValue> DoGetBoxOrdinalGroup();
255 : already_AddRefed<CSSValue> DoGetBoxOrient();
256 : already_AddRefed<CSSValue> DoGetBoxPack();
257 : already_AddRefed<CSSValue> DoGetBoxSizing();
258 :
259 : already_AddRefed<CSSValue> DoGetWidth();
260 : already_AddRefed<CSSValue> DoGetHeight();
261 : already_AddRefed<CSSValue> DoGetMaxHeight();
262 : already_AddRefed<CSSValue> DoGetMaxWidth();
263 : already_AddRefed<CSSValue> DoGetMinHeight();
264 : already_AddRefed<CSSValue> DoGetMinWidth();
265 : already_AddRefed<CSSValue> DoGetMixBlendMode();
266 : already_AddRefed<CSSValue> DoGetIsolation();
267 : already_AddRefed<CSSValue> DoGetObjectFit();
268 : already_AddRefed<CSSValue> DoGetObjectPosition();
269 : already_AddRefed<CSSValue> DoGetLeft();
270 : already_AddRefed<CSSValue> DoGetTop();
271 : already_AddRefed<CSSValue> DoGetRight();
272 : already_AddRefed<CSSValue> DoGetBottom();
273 : already_AddRefed<CSSValue> DoGetStackSizing();
274 :
275 : /* Font properties */
276 : already_AddRefed<CSSValue> DoGetColor();
277 : already_AddRefed<CSSValue> DoGetFontFamily();
278 : already_AddRefed<CSSValue> DoGetFontFeatureSettings();
279 : already_AddRefed<CSSValue> DoGetFontVariationSettings();
280 : already_AddRefed<CSSValue> DoGetFontKerning();
281 : already_AddRefed<CSSValue> DoGetFontLanguageOverride();
282 : already_AddRefed<CSSValue> DoGetFontOpticalSizing();
283 : already_AddRefed<CSSValue> DoGetFontSize();
284 : already_AddRefed<CSSValue> DoGetFontSizeAdjust();
285 : already_AddRefed<CSSValue> DoGetOsxFontSmoothing();
286 : already_AddRefed<CSSValue> DoGetFontSmoothingBackgroundColor();
287 : already_AddRefed<CSSValue> DoGetFontStretch();
288 : already_AddRefed<CSSValue> DoGetFontStyle();
289 : already_AddRefed<CSSValue> DoGetFontSynthesis();
290 : already_AddRefed<CSSValue> DoGetFontVariant();
291 : already_AddRefed<CSSValue> DoGetFontVariantAlternates();
292 : already_AddRefed<CSSValue> DoGetFontVariantCaps();
293 : already_AddRefed<CSSValue> DoGetFontVariantEastAsian();
294 : already_AddRefed<CSSValue> DoGetFontVariantLigatures();
295 : already_AddRefed<CSSValue> DoGetFontVariantNumeric();
296 : already_AddRefed<CSSValue> DoGetFontVariantPosition();
297 : already_AddRefed<CSSValue> DoGetFontWeight();
298 :
299 : /* Grid properties */
300 : already_AddRefed<CSSValue> DoGetGridAutoFlow();
301 : already_AddRefed<CSSValue> DoGetGridAutoColumns();
302 : already_AddRefed<CSSValue> DoGetGridAutoRows();
303 : already_AddRefed<CSSValue> DoGetGridTemplateAreas();
304 : already_AddRefed<CSSValue> DoGetGridTemplateColumns();
305 : already_AddRefed<CSSValue> DoGetGridTemplateRows();
306 : already_AddRefed<CSSValue> DoGetGridColumnStart();
307 : already_AddRefed<CSSValue> DoGetGridColumnEnd();
308 : already_AddRefed<CSSValue> DoGetGridRowStart();
309 : already_AddRefed<CSSValue> DoGetGridRowEnd();
310 :
311 : /* StyleImageLayer properties */
312 : already_AddRefed<CSSValue> DoGetImageLayerImage(const nsStyleImageLayers& aLayers);
313 : already_AddRefed<CSSValue> DoGetImageLayerPosition(const nsStyleImageLayers& aLayers);
314 : already_AddRefed<CSSValue> DoGetImageLayerPositionX(const nsStyleImageLayers& aLayers);
315 : already_AddRefed<CSSValue> DoGetImageLayerPositionY(const nsStyleImageLayers& aLayers);
316 : already_AddRefed<CSSValue> DoGetImageLayerRepeat(const nsStyleImageLayers& aLayers);
317 : already_AddRefed<CSSValue> DoGetImageLayerSize(const nsStyleImageLayers& aLayers);
318 :
319 : /* Background properties */
320 : already_AddRefed<CSSValue> DoGetBackgroundAttachment();
321 : already_AddRefed<CSSValue> DoGetBackgroundColor();
322 : already_AddRefed<CSSValue> DoGetBackgroundImage();
323 : already_AddRefed<CSSValue> DoGetBackgroundPosition();
324 : already_AddRefed<CSSValue> DoGetBackgroundPositionX();
325 : already_AddRefed<CSSValue> DoGetBackgroundPositionY();
326 : already_AddRefed<CSSValue> DoGetBackgroundRepeat();
327 : already_AddRefed<CSSValue> DoGetBackgroundClip();
328 : already_AddRefed<CSSValue> DoGetBackgroundBlendMode();
329 : already_AddRefed<CSSValue> DoGetBackgroundOrigin();
330 : already_AddRefed<CSSValue> DoGetBackgroundSize();
331 :
332 : /* Mask properties */
333 : already_AddRefed<CSSValue> DoGetMask();
334 : already_AddRefed<CSSValue> DoGetMaskImage();
335 : already_AddRefed<CSSValue> DoGetMaskPosition();
336 : already_AddRefed<CSSValue> DoGetMaskPositionX();
337 : already_AddRefed<CSSValue> DoGetMaskPositionY();
338 : already_AddRefed<CSSValue> DoGetMaskRepeat();
339 : already_AddRefed<CSSValue> DoGetMaskClip();
340 : already_AddRefed<CSSValue> DoGetMaskOrigin();
341 : already_AddRefed<CSSValue> DoGetMaskSize();
342 : already_AddRefed<CSSValue> DoGetMaskMode();
343 : already_AddRefed<CSSValue> DoGetMaskComposite();
344 :
345 : /* Padding properties */
346 : already_AddRefed<CSSValue> DoGetPaddingTop();
347 : already_AddRefed<CSSValue> DoGetPaddingBottom();
348 : already_AddRefed<CSSValue> DoGetPaddingLeft();
349 : already_AddRefed<CSSValue> DoGetPaddingRight();
350 :
351 : /* Table Properties */
352 : already_AddRefed<CSSValue> DoGetBorderCollapse();
353 : already_AddRefed<CSSValue> DoGetBorderSpacing();
354 : already_AddRefed<CSSValue> DoGetCaptionSide();
355 : already_AddRefed<CSSValue> DoGetEmptyCells();
356 : already_AddRefed<CSSValue> DoGetTableLayout();
357 : already_AddRefed<CSSValue> DoGetVerticalAlign();
358 :
359 : /* Border Properties */
360 : already_AddRefed<CSSValue> DoGetBorderTopStyle();
361 : already_AddRefed<CSSValue> DoGetBorderBottomStyle();
362 : already_AddRefed<CSSValue> DoGetBorderLeftStyle();
363 : already_AddRefed<CSSValue> DoGetBorderRightStyle();
364 : already_AddRefed<CSSValue> DoGetBorderTopWidth();
365 : already_AddRefed<CSSValue> DoGetBorderBottomWidth();
366 : already_AddRefed<CSSValue> DoGetBorderLeftWidth();
367 : already_AddRefed<CSSValue> DoGetBorderRightWidth();
368 : already_AddRefed<CSSValue> DoGetBorderTopColor();
369 : already_AddRefed<CSSValue> DoGetBorderBottomColor();
370 : already_AddRefed<CSSValue> DoGetBorderLeftColor();
371 : already_AddRefed<CSSValue> DoGetBorderRightColor();
372 : already_AddRefed<CSSValue> DoGetBorderBottomLeftRadius();
373 : already_AddRefed<CSSValue> DoGetBorderBottomRightRadius();
374 : already_AddRefed<CSSValue> DoGetBorderTopLeftRadius();
375 : already_AddRefed<CSSValue> DoGetBorderTopRightRadius();
376 : already_AddRefed<CSSValue> DoGetFloatEdge();
377 :
378 : /* Border Image */
379 : already_AddRefed<CSSValue> DoGetBorderImageSource();
380 : already_AddRefed<CSSValue> DoGetBorderImageSlice();
381 : already_AddRefed<CSSValue> DoGetBorderImageWidth();
382 : already_AddRefed<CSSValue> DoGetBorderImageOutset();
383 : already_AddRefed<CSSValue> DoGetBorderImageRepeat();
384 :
385 : /* Box Shadow */
386 : already_AddRefed<CSSValue> DoGetBoxShadow();
387 :
388 : /* Window Shadow */
389 : already_AddRefed<CSSValue> DoGetWindowShadow();
390 :
391 : /* Margin Properties */
392 : already_AddRefed<CSSValue> DoGetMarginTopWidth();
393 : already_AddRefed<CSSValue> DoGetMarginBottomWidth();
394 : already_AddRefed<CSSValue> DoGetMarginLeftWidth();
395 : already_AddRefed<CSSValue> DoGetMarginRightWidth();
396 :
397 : /* Outline Properties */
398 : already_AddRefed<CSSValue> DoGetOutlineWidth();
399 : already_AddRefed<CSSValue> DoGetOutlineStyle();
400 : already_AddRefed<CSSValue> DoGetOutlineColor();
401 : already_AddRefed<CSSValue> DoGetOutlineOffset();
402 : already_AddRefed<CSSValue> DoGetOutlineRadiusBottomLeft();
403 : already_AddRefed<CSSValue> DoGetOutlineRadiusBottomRight();
404 : already_AddRefed<CSSValue> DoGetOutlineRadiusTopLeft();
405 : already_AddRefed<CSSValue> DoGetOutlineRadiusTopRight();
406 :
407 : /* Content Properties */
408 : already_AddRefed<CSSValue> DoGetContent();
409 : already_AddRefed<CSSValue> DoGetCounterIncrement();
410 : already_AddRefed<CSSValue> DoGetCounterReset();
411 :
412 : /* Quotes Properties */
413 : already_AddRefed<CSSValue> DoGetQuotes();
414 :
415 : /* z-index */
416 : already_AddRefed<CSSValue> DoGetZIndex();
417 :
418 : /* List properties */
419 : already_AddRefed<CSSValue> DoGetListStyleImage();
420 : already_AddRefed<CSSValue> DoGetListStylePosition();
421 : already_AddRefed<CSSValue> DoGetListStyleType();
422 : already_AddRefed<CSSValue> DoGetImageRegion();
423 :
424 : /* Text Properties */
425 : already_AddRefed<CSSValue> DoGetInitialLetter();
426 : already_AddRefed<CSSValue> DoGetLineHeight();
427 : already_AddRefed<CSSValue> DoGetRubyAlign();
428 : already_AddRefed<CSSValue> DoGetRubyPosition();
429 : already_AddRefed<CSSValue> DoGetTextAlign();
430 : already_AddRefed<CSSValue> DoGetTextAlignLast();
431 : already_AddRefed<CSSValue> DoGetTextCombineUpright();
432 : already_AddRefed<CSSValue> DoGetTextDecoration();
433 : already_AddRefed<CSSValue> DoGetTextDecorationColor();
434 : already_AddRefed<CSSValue> DoGetTextDecorationLine();
435 : already_AddRefed<CSSValue> DoGetTextDecorationStyle();
436 : already_AddRefed<CSSValue> DoGetTextEmphasisColor();
437 : already_AddRefed<CSSValue> DoGetTextEmphasisPosition();
438 : already_AddRefed<CSSValue> DoGetTextEmphasisStyle();
439 : already_AddRefed<CSSValue> DoGetTextIndent();
440 : already_AddRefed<CSSValue> DoGetTextJustify();
441 : already_AddRefed<CSSValue> DoGetTextOrientation();
442 : already_AddRefed<CSSValue> DoGetTextOverflow();
443 : already_AddRefed<CSSValue> DoGetTextShadow();
444 : already_AddRefed<CSSValue> DoGetTextSizeAdjust();
445 : already_AddRefed<CSSValue> DoGetTextTransform();
446 : already_AddRefed<CSSValue> DoGetLetterSpacing();
447 : already_AddRefed<CSSValue> DoGetWordSpacing();
448 : already_AddRefed<CSSValue> DoGetWhiteSpace();
449 : already_AddRefed<CSSValue> DoGetWordBreak();
450 : already_AddRefed<CSSValue> DoGetOverflowWrap();
451 : already_AddRefed<CSSValue> DoGetHyphens();
452 : already_AddRefed<CSSValue> DoGetTabSize();
453 : already_AddRefed<CSSValue> DoGetWebkitTextFillColor();
454 : already_AddRefed<CSSValue> DoGetWebkitTextStrokeColor();
455 : already_AddRefed<CSSValue> DoGetWebkitTextStrokeWidth();
456 :
457 : /* Visibility properties */
458 : already_AddRefed<CSSValue> DoGetColorAdjust();
459 : already_AddRefed<CSSValue> DoGetOpacity();
460 : already_AddRefed<CSSValue> DoGetPointerEvents();
461 : already_AddRefed<CSSValue> DoGetVisibility();
462 : already_AddRefed<CSSValue> DoGetWritingMode();
463 :
464 : /* Direction properties */
465 : already_AddRefed<CSSValue> DoGetDirection();
466 : already_AddRefed<CSSValue> DoGetUnicodeBidi();
467 :
468 : /* Display properties */
469 : already_AddRefed<CSSValue> DoGetBinding();
470 : already_AddRefed<CSSValue> DoGetClear();
471 : already_AddRefed<CSSValue> DoGetFloat();
472 : already_AddRefed<CSSValue> DoGetDisplay();
473 : already_AddRefed<CSSValue> DoGetContain();
474 : already_AddRefed<CSSValue> DoGetPosition();
475 : already_AddRefed<CSSValue> DoGetClip();
476 : already_AddRefed<CSSValue> DoGetImageOrientation();
477 : already_AddRefed<CSSValue> DoGetWillChange();
478 : already_AddRefed<CSSValue> DoGetOverflow();
479 : already_AddRefed<CSSValue> DoGetOverflowX();
480 : already_AddRefed<CSSValue> DoGetOverflowY();
481 : already_AddRefed<CSSValue> DoGetOverflowClipBoxBlock();
482 : already_AddRefed<CSSValue> DoGetOverflowClipBoxInline();
483 : already_AddRefed<CSSValue> DoGetResize();
484 : already_AddRefed<CSSValue> DoGetPageBreakAfter();
485 : already_AddRefed<CSSValue> DoGetPageBreakBefore();
486 : already_AddRefed<CSSValue> DoGetPageBreakInside();
487 : already_AddRefed<CSSValue> DoGetTouchAction();
488 : already_AddRefed<CSSValue> DoGetTransform();
489 : already_AddRefed<CSSValue> DoGetTranslate();
490 : already_AddRefed<CSSValue> DoGetRotate();
491 : already_AddRefed<CSSValue> DoGetScale();
492 : already_AddRefed<CSSValue> DoGetTransformBox();
493 : already_AddRefed<CSSValue> DoGetTransformOrigin();
494 : already_AddRefed<CSSValue> DoGetPerspective();
495 : already_AddRefed<CSSValue> DoGetBackfaceVisibility();
496 : already_AddRefed<CSSValue> DoGetPerspectiveOrigin();
497 : already_AddRefed<CSSValue> DoGetTransformStyle();
498 : already_AddRefed<CSSValue> DoGetOrient();
499 : already_AddRefed<CSSValue> DoGetScrollBehavior();
500 : already_AddRefed<CSSValue> DoGetOverscrollBehaviorX();
501 : already_AddRefed<CSSValue> DoGetOverscrollBehaviorY();
502 : already_AddRefed<CSSValue> DoGetScrollSnapType();
503 : already_AddRefed<CSSValue> DoGetScrollSnapTypeX();
504 : already_AddRefed<CSSValue> DoGetScrollSnapTypeY();
505 : already_AddRefed<CSSValue> DoGetScrollSnapPointsX();
506 : already_AddRefed<CSSValue> DoGetScrollSnapPointsY();
507 : already_AddRefed<CSSValue> DoGetScrollSnapDestination();
508 : already_AddRefed<CSSValue> DoGetScrollSnapCoordinate();
509 : already_AddRefed<CSSValue> DoGetScrollbarFaceColor();
510 : already_AddRefed<CSSValue> DoGetScrollbarTrackColor();
511 : already_AddRefed<CSSValue> DoGetShapeImageThreshold();
512 : already_AddRefed<CSSValue> DoGetShapeMargin();
513 : already_AddRefed<CSSValue> DoGetShapeOutside();
514 :
515 : /* User interface properties */
516 : already_AddRefed<CSSValue> DoGetCaretColor();
517 : already_AddRefed<CSSValue> DoGetCursor();
518 : already_AddRefed<CSSValue> DoGetForceBrokenImageIcon();
519 : already_AddRefed<CSSValue> DoGetIMEMode();
520 : already_AddRefed<CSSValue> DoGetUserFocus();
521 : already_AddRefed<CSSValue> DoGetUserInput();
522 : already_AddRefed<CSSValue> DoGetUserModify();
523 : already_AddRefed<CSSValue> DoGetUserSelect();
524 : already_AddRefed<CSSValue> DoGetWindowDragging();
525 : already_AddRefed<CSSValue> DoGetWindowOpacity();
526 : already_AddRefed<CSSValue> DoGetWindowTransform();
527 : already_AddRefed<CSSValue> DoGetWindowTransformOrigin();
528 :
529 : /* Column properties */
530 : already_AddRefed<CSSValue> DoGetColumnCount();
531 : already_AddRefed<CSSValue> DoGetColumnFill();
532 : already_AddRefed<CSSValue> DoGetColumnSpan();
533 : already_AddRefed<CSSValue> DoGetColumnWidth();
534 : already_AddRefed<CSSValue> DoGetColumnRuleWidth();
535 : already_AddRefed<CSSValue> DoGetColumnRuleStyle();
536 : already_AddRefed<CSSValue> DoGetColumnRuleColor();
537 :
538 : /* CSS Transitions */
539 : already_AddRefed<CSSValue> DoGetTransitionProperty();
540 : already_AddRefed<CSSValue> DoGetTransitionDuration();
541 : already_AddRefed<CSSValue> DoGetTransitionDelay();
542 : already_AddRefed<CSSValue> DoGetTransitionTimingFunction();
543 :
544 : /* CSS Animations */
545 : already_AddRefed<CSSValue> DoGetAnimationName();
546 : already_AddRefed<CSSValue> DoGetAnimationDuration();
547 : already_AddRefed<CSSValue> DoGetAnimationDelay();
548 : already_AddRefed<CSSValue> DoGetAnimationTimingFunction();
549 : already_AddRefed<CSSValue> DoGetAnimationDirection();
550 : already_AddRefed<CSSValue> DoGetAnimationFillMode();
551 : already_AddRefed<CSSValue> DoGetAnimationIterationCount();
552 : already_AddRefed<CSSValue> DoGetAnimationPlayState();
553 :
554 : /* CSS Flexbox properties */
555 : already_AddRefed<CSSValue> DoGetFlexBasis();
556 : already_AddRefed<CSSValue> DoGetFlexDirection();
557 : already_AddRefed<CSSValue> DoGetFlexGrow();
558 : already_AddRefed<CSSValue> DoGetFlexShrink();
559 : already_AddRefed<CSSValue> DoGetFlexWrap();
560 :
561 : /* CSS Flexbox/Grid properties */
562 : already_AddRefed<CSSValue> DoGetOrder();
563 :
564 : /* CSS Box Alignment properties */
565 : already_AddRefed<CSSValue> DoGetAlignContent();
566 : already_AddRefed<CSSValue> DoGetAlignItems();
567 : already_AddRefed<CSSValue> DoGetAlignSelf();
568 : already_AddRefed<CSSValue> DoGetJustifyContent();
569 : already_AddRefed<CSSValue> DoGetJustifyItems();
570 : already_AddRefed<CSSValue> DoGetJustifySelf();
571 : already_AddRefed<CSSValue> DoGetColumnGap();
572 : already_AddRefed<CSSValue> DoGetRowGap();
573 :
574 : /* SVG properties */
575 : already_AddRefed<CSSValue> DoGetFill();
576 : already_AddRefed<CSSValue> DoGetStroke();
577 : already_AddRefed<CSSValue> DoGetMarkerEnd();
578 : already_AddRefed<CSSValue> DoGetMarkerMid();
579 : already_AddRefed<CSSValue> DoGetMarkerStart();
580 : already_AddRefed<CSSValue> DoGetStrokeDasharray();
581 :
582 : already_AddRefed<CSSValue> DoGetStrokeDashoffset();
583 : already_AddRefed<CSSValue> DoGetStrokeWidth();
584 : already_AddRefed<CSSValue> DoGetVectorEffect();
585 :
586 : already_AddRefed<CSSValue> DoGetFillOpacity();
587 : already_AddRefed<CSSValue> DoGetFloodOpacity();
588 : already_AddRefed<CSSValue> DoGetStopOpacity();
589 : already_AddRefed<CSSValue> DoGetStrokeMiterlimit();
590 : already_AddRefed<CSSValue> DoGetStrokeOpacity();
591 :
592 : already_AddRefed<CSSValue> DoGetClipRule();
593 : already_AddRefed<CSSValue> DoGetFillRule();
594 : already_AddRefed<CSSValue> DoGetStrokeLinecap();
595 : already_AddRefed<CSSValue> DoGetStrokeLinejoin();
596 : already_AddRefed<CSSValue> DoGetTextAnchor();
597 :
598 : already_AddRefed<CSSValue> DoGetColorInterpolation();
599 : already_AddRefed<CSSValue> DoGetColorInterpolationFilters();
600 : already_AddRefed<CSSValue> DoGetDominantBaseline();
601 : already_AddRefed<CSSValue> DoGetImageRendering();
602 : already_AddRefed<CSSValue> DoGetShapeRendering();
603 : already_AddRefed<CSSValue> DoGetTextRendering();
604 :
605 : already_AddRefed<CSSValue> DoGetFloodColor();
606 : already_AddRefed<CSSValue> DoGetLightingColor();
607 : already_AddRefed<CSSValue> DoGetStopColor();
608 :
609 : already_AddRefed<CSSValue> DoGetClipPath();
610 : already_AddRefed<CSSValue> DoGetFilter();
611 : already_AddRefed<CSSValue> DoGetMaskType();
612 : already_AddRefed<CSSValue> DoGetPaintOrder();
613 :
614 : already_AddRefed<CSSValue> DoGetContextProperties();
615 :
616 : /* Helper functions */
617 : void SetToRGBAColor(nsROCSSPrimitiveValue* aValue, nscolor aColor);
618 : void SetValueFromComplexColor(nsROCSSPrimitiveValue* aValue,
619 : const mozilla::StyleComplexColor& aColor);
620 : void SetValueForWidgetColor(nsROCSSPrimitiveValue* aValue,
621 : const mozilla::StyleComplexColor& aColor,
622 : uint8_t aWidgetType);
623 : void SetValueToStyleImage(const nsStyleImage& aStyleImage,
624 : nsROCSSPrimitiveValue* aValue);
625 : void SetValueToPositionCoord(const mozilla::Position::Coord& aCoord,
626 : nsROCSSPrimitiveValue* aValue);
627 : void SetValueToPosition(const mozilla::Position& aPosition,
628 : nsDOMCSSValueList* aValueList);
629 : void SetValueToURLValue(const mozilla::css::URLValueData* aURL,
630 : nsROCSSPrimitiveValue* aValue);
631 :
632 : /**
633 : * A method to get a percentage base for a percentage value. Returns true
634 : * if a percentage base value was determined, false otherwise.
635 : */
636 : typedef bool (nsComputedDOMStyle::*PercentageBaseGetter)(nscoord&);
637 :
638 : /**
639 : * Method to set aValue to aCoord. If aCoord is a percentage value and
640 : * aPercentageBaseGetter is not null, aPercentageBaseGetter is called. If it
641 : * returns true, the percentage base it outputs in its out param is used
642 : * to compute an nscoord value. If the getter is null or returns false,
643 : * the percent value of aCoord is set as a percent value on aValue. aTable,
644 : * if not null, is the keyword table to handle eStyleUnit_Enumerated. When
645 : * calling SetAppUnits on aValue (for coord or percent values), the value
646 : * passed in will be clamped to be no less than aMinAppUnits and no more than
647 : * aMaxAppUnits.
648 : *
649 : * XXXbz should caller pass in some sort of bitfield indicating which units
650 : * can be expected or something?
651 : */
652 : void SetValueToCoord(nsROCSSPrimitiveValue* aValue,
653 : const nsStyleCoord& aCoord,
654 : bool aClampNegativeCalc,
655 : PercentageBaseGetter aPercentageBaseGetter = nullptr,
656 : const KTableEntry aTable[] = nullptr,
657 : nscoord aMinAppUnits = nscoord_MIN,
658 : nscoord aMaxAppUnits = nscoord_MAX);
659 :
660 : /**
661 : * If aCoord is a eStyleUnit_Coord returns the nscoord. If it's
662 : * eStyleUnit_Percent, attempts to resolve the percentage base and returns
663 : * the resulting nscoord. If it's some other unit or a percentge base can't
664 : * be determined, returns aDefaultValue.
665 : */
666 : nscoord StyleCoordToNSCoord(const nsStyleCoord& aCoord,
667 : PercentageBaseGetter aPercentageBaseGetter,
668 : nscoord aDefaultValue,
669 : bool aClampNegativeCalc);
670 :
671 : /**
672 : * Append coord values from four sides. It omits values when possible.
673 : */
674 : void AppendFourSideCoordValues(nsDOMCSSValueList* aList,
675 : const nsStyleSides& aValues);
676 :
677 : bool GetCBContentWidth(nscoord& aWidth);
678 : bool GetCBContentHeight(nscoord& aWidth);
679 : bool GetScrollFrameContentWidth(nscoord& aWidth);
680 : bool GetScrollFrameContentHeight(nscoord& aHeight);
681 : bool GetFrameBoundsWidthForTransform(nscoord &aWidth);
682 : bool GetFrameBoundsHeightForTransform(nscoord &aHeight);
683 : bool GetFrameBorderRectWidth(nscoord& aWidth);
684 : bool GetFrameBorderRectHeight(nscoord& aHeight);
685 :
686 : /* Helper functions for computing and serializing a nsStyleCoord. */
687 : void SetCssTextToCoord(nsAString& aCssText, const nsStyleCoord& aCoord,
688 : bool aClampNegativeCalc);
689 : already_AddRefed<CSSValue> CreatePrimitiveValueForStyleFilter(
690 : const nsStyleFilter& aStyleFilter);
691 :
692 : already_AddRefed<CSSValue>
693 : GetShapeSource(const mozilla::StyleShapeSource& aShapeSource,
694 : const KTableEntry aBoxKeywordTable[]);
695 :
696 : template<typename ReferenceBox>
697 : already_AddRefed<CSSValue>
698 : CreatePrimitiveValueForShapeSource(
699 : const mozilla::UniquePtr<mozilla::StyleBasicShape>& aStyleBasicShape,
700 : ReferenceBox aReferenceBox,
701 : const KTableEntry aBoxKeywordTable[]);
702 :
703 : // Helper function for computing basic shape styles.
704 : already_AddRefed<CSSValue> CreatePrimitiveValueForBasicShape(
705 : const mozilla::UniquePtr<mozilla::StyleBasicShape>& aStyleBasicShape);
706 : void BoxValuesToString(nsAString& aString,
707 : const nsTArray<nsStyleCoord>& aBoxValues,
708 : bool aClampNegativeCalc);
709 : void BasicShapeRadiiToString(nsAString& aCssText,
710 : const nsStyleCorners& aCorners);
711 :
712 : // Find out if we can safely skip flushing for aDocument (i.e. pending
713 : // restyles does not affect mContent).
714 : bool NeedsToFlush(nsIDocument* aDocument) const;
715 :
716 :
717 : static ComputedStyleMap* GetComputedStyleMap();
718 :
719 : // We don't really have a good immutable representation of "presentation".
720 : // Given the way GetComputedStyle is currently used, we should just grab the
721 : // 0th presshell, if any, from the document.
722 : nsWeakPtr mDocumentWeak;
723 : nsCOMPtr<nsIContent> mContent;
724 :
725 : /**
726 : * Strong reference to the ComputedStyle we access data from. This can be
727 : * either a ComputedStyle we resolved ourselves or a ComputedStyle we got
728 : * from our frame.
729 : *
730 : * If we got the ComputedStyle from the frame, we clear out mComputedStyle
731 : * in ClearCurrentStyleSources. If we resolved one ourselves, then
732 : * ClearCurrentStyleSources leaves it in mComputedStyle for use the next
733 : * time this nsComputedDOMStyle object is queried. UpdateCurrentStyleSources
734 : * in this case will check that the ComputedStyle is still valid to be used,
735 : * by checking whether flush styles results in any restyles having been
736 : * processed.
737 : *
738 : * Since an ArenaRefPtr is used to hold the ComputedStyle, it will be cleared
739 : * if the pres arena from which it was allocated goes away.
740 : */
741 : mozilla::ArenaRefPtr<mozilla::ComputedStyle> mComputedStyle;
742 : RefPtr<nsAtom> mPseudo;
743 :
744 : /*
745 : * While computing style data, the primary frame for mContent --- named "outer"
746 : * because we should use it to compute positioning data. Null
747 : * otherwise.
748 : */
749 : nsIFrame* mOuterFrame;
750 : /*
751 : * While computing style data, the "inner frame" for mContent --- the frame
752 : * which we should use to compute margin, border, padding and content data. Null
753 : * otherwise.
754 : */
755 : nsIFrame* mInnerFrame;
756 : /*
757 : * While computing style data, the presshell we're working with. Null
758 : * otherwise.
759 : */
760 : nsIPresShell* mPresShell;
761 :
762 : /*
763 : * The kind of styles we should be returning.
764 : */
765 : StyleType mStyleType;
766 :
767 : /**
768 : * The nsComputedDOMStyle generation at the time we last resolved a style
769 : * context and stored it in mComputedStyle.
770 : */
771 : uint64_t mComputedStyleGeneration;
772 :
773 : bool mExposeVisitedStyle;
774 :
775 : /**
776 : * Whether we resolved a ComputedStyle last time we called
777 : * UpdateCurrentStyleSources. Initially false.
778 : */
779 : bool mResolvedComputedStyle;
780 :
781 : #ifdef DEBUG
782 : bool mFlushedPendingReflows;
783 : #endif
784 : };
785 :
786 : already_AddRefed<nsComputedDOMStyle>
787 : NS_NewComputedDOMStyle(mozilla::dom::Element* aElement,
788 : const nsAString& aPseudoElt,
789 : nsIPresShell* aPresShell,
790 : nsComputedDOMStyle::StyleType aStyleType =
791 : nsComputedDOMStyle::eAll);
792 :
793 : #endif /* nsComputedDOMStyle_h__ */
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