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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com) | 3 * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com) |
4 * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com) | 4 * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com) |
5 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. | 5 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. |
6 * All rights reserved. | 6 * All rights reserved. |
7 * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org> | 7 * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org> |
8 * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org> | 8 * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org> |
9 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. | 9 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. |
10 * (http://www.torchmobile.com/) | 10 * (http://www.torchmobile.com/) |
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52 #include "core/style/ComputedStyle.h" | 52 #include "core/style/ComputedStyle.h" |
53 #include "core/svg/SVGElement.h" | 53 #include "core/svg/SVGElement.h" |
54 #include "platform/instrumentation/tracing/TraceEvent.h" | 54 #include "platform/instrumentation/tracing/TraceEvent.h" |
55 #include "wtf/HashSet.h" | 55 #include "wtf/HashSet.h" |
56 #include "wtf/text/AtomicString.h" | 56 #include "wtf/text/AtomicString.h" |
57 | 57 |
58 namespace blink { | 58 namespace blink { |
59 | 59 |
60 using namespace HTMLNames; | 60 using namespace HTMLNames; |
61 | 61 |
| 62 inline ComputedStyle* getElementStyle(Element& element) { |
| 63 if (element.needsReattachLayoutTree()) { |
| 64 StyleReattachData styleReattachData = |
| 65 element.document().getStyleReattachData(element); |
| 66 if (styleReattachData.computedStyle) |
| 67 return styleReattachData.computedStyle.get(); |
| 68 } |
| 69 return element.mutableComputedStyle(); |
| 70 } |
| 71 |
62 bool SharedStyleFinder::canShareStyleWithControl(Element& candidate) const { | 72 bool SharedStyleFinder::canShareStyleWithControl(Element& candidate) const { |
63 if (!isHTMLInputElement(candidate) || !isHTMLInputElement(element())) | 73 if (!isHTMLInputElement(candidate) || !isHTMLInputElement(element())) |
64 return false; | 74 return false; |
65 | 75 |
66 HTMLInputElement& candidateInput = toHTMLInputElement(candidate); | 76 HTMLInputElement& candidateInput = toHTMLInputElement(candidate); |
67 HTMLInputElement& thisInput = toHTMLInputElement(element()); | 77 HTMLInputElement& thisInput = toHTMLInputElement(element()); |
68 | 78 |
69 if (candidateInput.isAutofilled() != thisInput.isAutofilled()) | 79 if (candidateInput.isAutofilled() != thisInput.isAutofilled()) |
70 return false; | 80 return false; |
71 if (candidateInput.shouldAppearChecked() != thisInput.shouldAppearChecked()) | 81 if (candidateInput.shouldAppearChecked() != thisInput.shouldAppearChecked()) |
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221 return false; | 231 return false; |
222 } | 232 } |
223 return true; | 233 return true; |
224 } | 234 } |
225 | 235 |
226 DISABLE_CFI_PERF | 236 DISABLE_CFI_PERF |
227 bool SharedStyleFinder::canShareStyleWithElement(Element& candidate) const { | 237 bool SharedStyleFinder::canShareStyleWithElement(Element& candidate) const { |
228 if (element() == candidate) | 238 if (element() == candidate) |
229 return false; | 239 return false; |
230 Element* parent = candidate.parentOrShadowHostElement(); | 240 Element* parent = candidate.parentOrShadowHostElement(); |
231 const ComputedStyle* style = candidate.computedStyle(); | 241 const ComputedStyle* style = getElementStyle(candidate); |
232 if (!style) | 242 if (!style) |
233 return false; | 243 return false; |
234 if (!style->isSharable()) | 244 if (!style->isSharable()) |
235 return false; | 245 return false; |
236 if (!parent) | 246 if (!parent) |
237 return false; | 247 return false; |
238 if (element().parentOrShadowHostElement()->computedStyle() != | 248 if (getElementStyle(*element().parentOrShadowHostElement()) != |
239 parent->computedStyle()) | 249 getElementStyle(*parent)) |
240 return false; | 250 return false; |
241 if (candidate.tagQName() != element().tagQName()) | 251 if (candidate.tagQName() != element().tagQName()) |
242 return false; | 252 return false; |
243 if (candidate.inlineStyle()) | 253 if (candidate.inlineStyle()) |
244 return false; | 254 return false; |
245 if (candidate.needsStyleRecalc()) | 255 if (candidate.needsStyleRecalc() && !candidate.needsReattachLayoutTree()) |
246 return false; | 256 return false; |
247 if (candidate.isSVGElement() && | 257 if (candidate.isSVGElement() && |
248 toSVGElement(candidate).animatedSMILStyleProperties()) | 258 toSVGElement(candidate).animatedSMILStyleProperties()) |
249 return false; | 259 return false; |
250 if (candidate.isLink() != element().isLink()) | 260 if (candidate.isLink() != element().isLink()) |
251 return false; | 261 return false; |
252 if (candidate.shadowPseudoId() != element().shadowPseudoId()) | 262 if (candidate.shadowPseudoId() != element().shadowPseudoId()) |
253 return false; | 263 return false; |
254 if (!sharingCandidateHasIdenticalStyleAffectingAttributes(candidate)) | 264 if (!sharingCandidateHasIdenticalStyleAffectingAttributes(candidate)) |
255 return false; | 265 return false; |
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400 } | 410 } |
401 | 411 |
402 // Tracking child index requires unique style for each node. This may get set | 412 // Tracking child index requires unique style for each node. This may get set |
403 // by the sibling rule match above. | 413 // by the sibling rule match above. |
404 if (!element().parentElementOrShadowRoot()->childrenSupportStyleSharing()) { | 414 if (!element().parentElementOrShadowRoot()->childrenSupportStyleSharing()) { |
405 INCREMENT_STYLE_STATS_COUNTER(document().styleEngine(), | 415 INCREMENT_STYLE_STATS_COUNTER(document().styleEngine(), |
406 sharedStyleRejectedByParent, 1); | 416 sharedStyleRejectedByParent, 1); |
407 return nullptr; | 417 return nullptr; |
408 } | 418 } |
409 | 419 |
410 return shareElement->mutableComputedStyle(); | 420 return getElementStyle(*shareElement); |
411 } | 421 } |
412 | 422 |
413 } // namespace blink | 423 } // namespace blink |
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