forked from mirrors/gecko-dev
1482 lines
51 KiB
C++
1482 lines
51 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ServoStyleSet.h"
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#include "mozilla/ServoStyleSetInlines.h"
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#include "gfxPlatformFontList.h"
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#include "mozilla/AutoRestyleTimelineMarker.h"
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#include "mozilla/DocumentStyleRootIterator.h"
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#include "mozilla/EffectCompositor.h"
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#include "mozilla/IntegerRange.h"
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#include "mozilla/LookAndFeel.h"
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#include "mozilla/ServoBindings.h"
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#include "mozilla/RestyleManager.h"
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#include "mozilla/ServoStyleRuleMap.h"
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#include "mozilla/ServoTypes.h"
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#include "mozilla/SMILAnimationController.h"
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#include "mozilla/StyleAnimationValue.h"
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#include "mozilla/css/Loader.h"
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#include "mozilla/dom/AnonymousContent.h"
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#include "mozilla/dom/ChildIterator.h"
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#include "mozilla/dom/FontFaceSet.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/ElementInlines.h"
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#include "nsCSSAnonBoxes.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsCSSPseudoElements.h"
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#include "nsDeviceContext.h"
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#include "nsHTMLStyleSheet.h"
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#include "nsIAnonymousContentCreator.h"
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#include "mozilla/dom/DocumentInlines.h"
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#include "nsMediaFeatures.h"
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#include "nsPrintfCString.h"
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#include "nsXBLPrototypeBinding.h"
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#include "gfxUserFontSet.h"
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#include "nsBindingManager.h"
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#include "nsWindowSizes.h"
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#include "GeckoProfiler.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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#ifdef DEBUG
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bool ServoStyleSet::IsCurrentThreadInServoTraversal() {
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return sInServoTraversal && (NS_IsMainThread() || Servo_IsWorkerThread());
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}
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#endif
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namespace mozilla {
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ServoStyleSet* sInServoTraversal = nullptr;
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// On construction, sets sInServoTraversal to the given ServoStyleSet.
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// On destruction, clears sInServoTraversal and calls RunPostTraversalTasks.
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class MOZ_RAII AutoSetInServoTraversal {
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public:
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explicit AutoSetInServoTraversal(ServoStyleSet* aSet) : mSet(aSet) {
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MOZ_ASSERT(!sInServoTraversal);
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MOZ_ASSERT(aSet);
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sInServoTraversal = aSet;
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}
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~AutoSetInServoTraversal() {
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MOZ_ASSERT(sInServoTraversal);
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sInServoTraversal = nullptr;
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mSet->RunPostTraversalTasks();
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}
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private:
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ServoStyleSet* mSet;
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};
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// Sets up for one or more calls to Servo_TraverseSubtree.
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class MOZ_RAII AutoPrepareTraversal {
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public:
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explicit AutoPrepareTraversal(ServoStyleSet* aSet)
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// For markers for animations, we have already set the markers in
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// RestyleManager::PostRestyleEventForAnimations so that we don't need
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// to care about animation restyles here.
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: mTimelineMarker(aSet->mDocument->GetDocShell(), false),
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mSetInServoTraversal(aSet) {
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MOZ_ASSERT(!aSet->StylistNeedsUpdate());
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}
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private:
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AutoRestyleTimelineMarker mTimelineMarker;
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AutoSetInServoTraversal mSetInServoTraversal;
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};
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} // namespace mozilla
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ServoStyleSet::ServoStyleSet()
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: mDocument(nullptr),
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mAuthorStyleDisabled(false),
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mStylistState(StylistState::NotDirty),
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mUserFontSetUpdateGeneration(0),
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mNeedsRestyleAfterEnsureUniqueInner(false) {}
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ServoStyleSet::~ServoStyleSet() {
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for (auto& sheetArray : mSheets) {
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for (auto& sheet : sheetArray) {
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sheet->DropStyleSet(this);
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}
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}
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}
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nsPresContext* ServoStyleSet::GetPresContext() {
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if (!mDocument) {
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return nullptr;
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}
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return mDocument->GetPresContext();
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}
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void ServoStyleSet::Init(nsPresContext* aPresContext) {
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mDocument = aPresContext->Document();
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MOZ_ASSERT(GetPresContext() == aPresContext);
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mRawSet.reset(Servo_StyleSet_Init(aPresContext));
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aPresContext->DeviceContext()->InitFontCache();
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// Now that we have an mRawSet, go ahead and notify about whatever stylesheets
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// we have so far.
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for (auto& sheetArray : mSheets) {
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for (auto& sheet : sheetArray) {
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// There's no guarantee this will create a list on the servo side whose
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// ordering matches the list that would have been created had all those
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// sheets been appended/prepended/etc after we had mRawSet. That's okay
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// because Servo only needs to maintain relative ordering within a sheet
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// type, which this preserves.
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MOZ_ASSERT(sheet->RawContents(),
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"We should only append non-null raw sheets.");
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Servo_StyleSet_AppendStyleSheet(mRawSet.get(), sheet);
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}
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}
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// We added prefilled stylesheets into mRawSet, so the stylist is dirty.
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// The Stylist should be updated later when necessary.
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SetStylistStyleSheetsDirty();
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// We may have Shadow DOM style changes that we weren't notified about because
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// the document didn't have a shell, if the ShadowRoot was created in a
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// display: none iframe.
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//
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// Now that we got a shell, we may need to get them up-to-date.
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//
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// TODO(emilio, bug 1418159): This wouldn't be needed if the StyleSet was
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// owned by the document.
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SetStylistXBLStyleSheetsDirty();
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}
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template <typename Functor>
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void EnumerateShadowRoots(const Document& aDoc, const Functor& aCb) {
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const Document::ShadowRootSet& shadowRoots = aDoc.ComposedShadowRoots();
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for (auto iter = shadowRoots.ConstIter(); !iter.Done(); iter.Next()) {
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ShadowRoot* root = iter.Get()->GetKey();
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MOZ_ASSERT(root);
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MOZ_DIAGNOSTIC_ASSERT(root->IsInComposedDoc());
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aCb(*root);
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}
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}
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void ServoStyleSet::Shutdown() {
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// Make sure we drop our cached styles before the presshell arena starts going
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// away.
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ClearNonInheritingComputedStyles();
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mRawSet = nullptr;
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mStyleRuleMap = nullptr;
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}
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void ServoStyleSet::RecordShadowStyleChange(ShadowRoot& aShadowRoot) {
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// TODO(emilio): We could keep track of the actual shadow roots that need
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// their styles recomputed.
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SetStylistXBLStyleSheetsDirty();
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// FIXME(emilio): This should be done using stylesheet invalidation instead.
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if (nsPresContext* pc = GetPresContext()) {
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pc->RestyleManager()->PostRestyleEvent(aShadowRoot.Host(), eRestyle_Subtree,
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nsChangeHint(0));
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}
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}
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void ServoStyleSet::InvalidateStyleForDocumentStateChanges(
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EventStates aStatesChanged) {
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MOZ_ASSERT(mDocument);
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MOZ_ASSERT(!aStatesChanged.IsEmpty());
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nsPresContext* pc = GetPresContext();
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if (!pc) {
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return;
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}
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Element* root = mDocument->GetRootElement();
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if (!root) {
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return;
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}
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// TODO(emilio): It may be nicer to just invalidate stuff in a given subtree
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// for XBL sheets / Shadow DOM. Consider just enumerating bound content
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// instead and run invalidation individually, passing mRawSet for the UA /
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// User sheets.
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AutoTArray<RawServoAuthorStylesBorrowed, 20> nonDocumentStyles;
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EnumerateShadowRoots(*mDocument, [&](ShadowRoot& aShadowRoot) {
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if (auto* authorStyles = aShadowRoot.GetServoStyles()) {
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nonDocumentStyles.AppendElement(authorStyles);
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}
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});
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mDocument->BindingManager()->EnumerateBoundContentProtoBindings(
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[&](nsXBLPrototypeBinding* aProto) {
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if (auto* authorStyles = aProto->GetServoStyles()) {
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nonDocumentStyles.AppendElement(authorStyles);
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}
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return true;
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});
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Servo_InvalidateStyleForDocStateChanges(
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root, mRawSet.get(), &nonDocumentStyles, aStatesChanged.ServoValue());
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}
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static const MediaFeatureChangeReason kMediaFeaturesAffectingDefaultStyle =
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// Zoom changes change the meaning of em units.
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MediaFeatureChangeReason::ZoomChange |
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// A resolution change changes the app-units-per-dev-pixels ratio, which
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// some structs (Border, Outline, Column) store for clamping. We should
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// arguably not do that, maybe doing it on layout directly, to try to avoid
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// relying on the pres context (bug 1418159).
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MediaFeatureChangeReason::ResolutionChange;
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nsRestyleHint ServoStyleSet::MediumFeaturesChanged(
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MediaFeatureChangeReason aReason) {
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AutoTArray<RawServoAuthorStylesBorrowedMut, 20> nonDocumentStyles;
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EnumerateShadowRoots(*mDocument, [&](ShadowRoot& aShadowRoot) {
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if (auto* authorStyles = aShadowRoot.GetServoStyles()) {
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nonDocumentStyles.AppendElement(authorStyles);
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}
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});
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// FIXME(emilio): This is broken for XBL. See bug 1406875.
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mDocument->BindingManager()->EnumerateBoundContentProtoBindings(
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[&](nsXBLPrototypeBinding* aProto) {
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if (auto* authorStyles = aProto->GetServoStyles()) {
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nonDocumentStyles.AppendElement(authorStyles);
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}
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return true;
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});
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bool mayAffectDefaultStyle =
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bool(aReason & kMediaFeaturesAffectingDefaultStyle);
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const MediumFeaturesChangedResult result =
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Servo_StyleSet_MediumFeaturesChanged(mRawSet.get(), &nonDocumentStyles,
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mayAffectDefaultStyle);
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const bool rulesChanged =
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result.mAffectsDocumentRules || result.mAffectsNonDocumentRules;
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if (result.mAffectsDocumentRules) {
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SetStylistStyleSheetsDirty();
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}
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if (result.mAffectsNonDocumentRules) {
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SetStylistXBLStyleSheetsDirty();
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}
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if (rulesChanged) {
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return eRestyle_Subtree;
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}
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const bool viewportChanged =
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bool(aReason & MediaFeatureChangeReason::ViewportChange);
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if (result.mUsesViewportUnits && viewportChanged) {
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return eRestyle_ForceDescendants;
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}
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return nsRestyleHint(0);
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}
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MOZ_DEFINE_MALLOC_SIZE_OF(ServoStyleSetMallocSizeOf)
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MOZ_DEFINE_MALLOC_ENCLOSING_SIZE_OF(ServoStyleSetMallocEnclosingSizeOf)
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void ServoStyleSet::AddSizeOfIncludingThis(nsWindowSizes& aSizes) const {
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MallocSizeOf mallocSizeOf = aSizes.mState.mMallocSizeOf;
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aSizes.mLayoutStyleSetsOther += mallocSizeOf(this);
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if (mRawSet) {
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aSizes.mLayoutStyleSetsOther += mallocSizeOf(mRawSet.get());
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ServoStyleSetSizes sizes;
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// Measure mRawSet. We use ServoStyleSetMallocSizeOf rather than
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// aMallocSizeOf to distinguish in DMD's output the memory measured within
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// Servo code.
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Servo_StyleSet_AddSizeOfExcludingThis(ServoStyleSetMallocSizeOf,
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ServoStyleSetMallocEnclosingSizeOf,
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&sizes, mRawSet.get());
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// The StyleSet does not contain precomputed pseudos; they are in the UA
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// cache.
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MOZ_RELEASE_ASSERT(sizes.mPrecomputedPseudos == 0);
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aSizes.mLayoutStyleSetsStylistRuleTree += sizes.mRuleTree;
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aSizes.mLayoutStyleSetsStylistElementAndPseudosMaps +=
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sizes.mElementAndPseudosMaps;
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aSizes.mLayoutStyleSetsStylistInvalidationMap += sizes.mInvalidationMap;
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aSizes.mLayoutStyleSetsStylistRevalidationSelectors +=
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sizes.mRevalidationSelectors;
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aSizes.mLayoutStyleSetsStylistOther += sizes.mOther;
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}
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if (mStyleRuleMap) {
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aSizes.mLayoutStyleSetsOther +=
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mStyleRuleMap->SizeOfIncludingThis(aSizes.mState.mMallocSizeOf);
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}
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// Measurement of the following members may be added later if DMD finds it is
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// worthwhile:
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// - mSheets
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// - mNonInheritingComputedStyles
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//
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// The following members are not measured:
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// - mDocument, because it a non-owning pointer
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}
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void ServoStyleSet::SetAuthorStyleDisabled(bool aStyleDisabled) {
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if (mAuthorStyleDisabled == aStyleDisabled) {
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return;
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}
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mAuthorStyleDisabled = aStyleDisabled;
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if (Element* root = mDocument->GetRootElement()) {
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if (nsPresContext* pc = GetPresContext()) {
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pc->RestyleManager()->PostRestyleEvent(root, eRestyle_Subtree,
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nsChangeHint(0));
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}
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}
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Servo_StyleSet_SetAuthorStyleDisabled(mRawSet.get(), mAuthorStyleDisabled);
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// XXX Workaround for the assertion in InvalidateStyleForDocumentStateChanges
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// which is called by nsIPresShell::SetAuthorStyleDisabled via nsIPresShell::
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// RestyleForCSSRuleChanges. It is not really necessary because we don't need
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// to rebuild stylist for this change. But we have bug around this, and we
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// may want to rethink how things should work. See bug 1437785.
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SetStylistStyleSheetsDirty();
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}
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already_AddRefed<ComputedStyle> ServoStyleSet::ResolveStyleFor(
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Element* aElement, LazyComputeBehavior aMayCompute) {
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if (aMayCompute == LazyComputeBehavior::Allow) {
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return ResolveStyleLazily(aElement, CSSPseudoElementType::NotPseudo);
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}
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return ResolveServoStyle(*aElement);
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}
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const ServoElementSnapshotTable& ServoStyleSet::Snapshots() {
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MOZ_ASSERT(GetPresContext(), "Styling a document without a shell?");
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return GetPresContext()->RestyleManager()->Snapshots();
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}
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void ServoStyleSet::ResolveMappedAttrDeclarationBlocks() {
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if (nsHTMLStyleSheet* sheet = mDocument->GetAttributeStyleSheet()) {
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sheet->CalculateMappedServoDeclarations();
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}
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mDocument->ResolveScheduledSVGPresAttrs();
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}
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void ServoStyleSet::PreTraverseSync() {
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// Get the Document's root element to ensure that the cache is valid before
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// calling into the (potentially-parallel) Servo traversal, where a cache hit
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// is necessary to avoid a data race when updating the cache.
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mozilla::Unused << mDocument->GetRootElement();
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// FIXME(emilio): This shouldn't be needed in theory, the call to the same
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// function in PresShell should do the work, but as it turns out we
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// ProcessPendingRestyles() twice, and runnables from frames just constructed
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// can end up doing editing stuff, which adds stylesheets etc...
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mDocument->FlushUserFontSet();
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ResolveMappedAttrDeclarationBlocks();
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nsMediaFeatures::InitSystemMetrics();
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LookAndFeel::NativeInit();
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mDocument->CacheAllKnownLangPrefs();
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if (gfxUserFontSet* userFontSet = mDocument->GetUserFontSet()) {
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nsPresContext* presContext = GetPresContext();
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MOZ_ASSERT(presContext,
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"For now, we don't call into here without a pres context");
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// Ensure that the @font-face data is not stale
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uint64_t generation = userFontSet->GetGeneration();
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if (generation != mUserFontSetUpdateGeneration) {
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mDocument->GetFonts()->CacheFontLoadability();
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presContext->DeviceContext()->UpdateFontCacheUserFonts(userFontSet);
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mUserFontSetUpdateGeneration = generation;
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}
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}
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MOZ_ASSERT(!StylistNeedsUpdate());
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}
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void ServoStyleSet::PreTraverse(ServoTraversalFlags aFlags, Element* aRoot) {
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PreTraverseSync();
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// Process animation stuff that we should avoid doing during the parallel
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// traversal.
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SMILAnimationController* smilController =
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mDocument->HasAnimationController() ? mDocument->GetAnimationController()
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: nullptr;
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MOZ_ASSERT(GetPresContext());
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if (aRoot) {
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GetPresContext()->EffectCompositor()->PreTraverseInSubtree(aFlags, aRoot);
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if (smilController) {
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smilController->PreTraverseInSubtree(aRoot);
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}
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} else {
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GetPresContext()->EffectCompositor()->PreTraverse(aFlags);
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if (smilController) {
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smilController->PreTraverse();
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}
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}
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}
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static inline already_AddRefed<ComputedStyle>
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ResolveStyleForTextOrFirstLetterContinuation(RawServoStyleSetBorrowed aStyleSet,
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ComputedStyle& aParent,
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nsAtom* aAnonBox) {
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MOZ_ASSERT(aAnonBox == nsCSSAnonBoxes::mozText() ||
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aAnonBox == nsCSSAnonBoxes::firstLetterContinuation());
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auto inheritTarget = aAnonBox == nsCSSAnonBoxes::mozText()
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? InheritTarget::Text
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: InheritTarget::FirstLetterContinuation;
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RefPtr<ComputedStyle> style =
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aParent.GetCachedInheritingAnonBoxStyle(aAnonBox);
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if (!style) {
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style = Servo_ComputedValues_Inherit(aStyleSet, aAnonBox, &aParent,
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inheritTarget)
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.Consume();
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MOZ_ASSERT(style);
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aParent.SetCachedInheritedAnonBoxStyle(aAnonBox, style);
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}
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return style.forget();
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}
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already_AddRefed<ComputedStyle> ServoStyleSet::ResolveStyleForText(
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nsIContent* aTextNode, ComputedStyle* aParentContext) {
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MOZ_ASSERT(aTextNode && aTextNode->IsText());
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MOZ_ASSERT(aTextNode->GetParent());
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MOZ_ASSERT(aParentContext);
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return ResolveStyleForTextOrFirstLetterContinuation(
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mRawSet.get(), *aParentContext, nsCSSAnonBoxes::mozText());
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}
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already_AddRefed<ComputedStyle>
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ServoStyleSet::ResolveStyleForFirstLetterContinuation(
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ComputedStyle* aParentContext) {
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MOZ_ASSERT(aParentContext);
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return ResolveStyleForTextOrFirstLetterContinuation(
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mRawSet.get(), *aParentContext,
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nsCSSAnonBoxes::firstLetterContinuation());
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}
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already_AddRefed<ComputedStyle> ServoStyleSet::ResolveStyleForPlaceholder() {
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RefPtr<ComputedStyle>& cache = mNonInheritingComputedStyles
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[nsCSSAnonBoxes::NonInheriting::oofPlaceholder];
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if (cache) {
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RefPtr<ComputedStyle> retval = cache;
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return retval.forget();
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}
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RefPtr<ComputedStyle> computedValues =
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Servo_ComputedValues_Inherit(mRawSet.get(),
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nsCSSAnonBoxes::oofPlaceholder(), nullptr,
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InheritTarget::PlaceholderFrame)
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|
.Consume();
|
|
MOZ_ASSERT(computedValues);
|
|
|
|
cache = computedValues;
|
|
return computedValues.forget();
|
|
}
|
|
|
|
static inline bool LazyPseudoIsCacheable(CSSPseudoElementType aType,
|
|
const Element& aOriginatingElement,
|
|
ComputedStyle* aParentContext) {
|
|
return aParentContext &&
|
|
!nsCSSPseudoElements::IsEagerlyCascadedInServo(aType) &&
|
|
aOriginatingElement.HasServoData() &&
|
|
!Servo_Element_IsPrimaryStyleReusedViaRuleNode(&aOriginatingElement);
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle> ServoStyleSet::ResolvePseudoElementStyle(
|
|
Element* aOriginatingElement, CSSPseudoElementType aType,
|
|
ComputedStyle* aParentContext, Element* aPseudoElement) {
|
|
// Runs from frame construction, this should have clean styles already, except
|
|
// with non-lazy FC...
|
|
UpdateStylistIfNeeded();
|
|
MOZ_ASSERT(aType < CSSPseudoElementType::Count);
|
|
|
|
RefPtr<ComputedStyle> computedValues;
|
|
|
|
if (aPseudoElement) {
|
|
MOZ_ASSERT(aType == aPseudoElement->GetPseudoElementType());
|
|
computedValues =
|
|
Servo_ResolveStyle(aPseudoElement, mRawSet.get()).Consume();
|
|
} else {
|
|
bool cacheable =
|
|
LazyPseudoIsCacheable(aType, *aOriginatingElement, aParentContext);
|
|
computedValues =
|
|
cacheable ? aParentContext->GetCachedLazyPseudoStyle(aType) : nullptr;
|
|
|
|
if (!computedValues) {
|
|
computedValues = Servo_ResolvePseudoStyle(aOriginatingElement, aType,
|
|
/* is_probe = */ false,
|
|
aParentContext, mRawSet.get())
|
|
.Consume();
|
|
if (cacheable) {
|
|
aParentContext->SetCachedLazyPseudoStyle(computedValues);
|
|
}
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(computedValues);
|
|
return computedValues.forget();
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle> ServoStyleSet::ResolveStyleLazily(
|
|
Element* aElement, CSSPseudoElementType aPseudoType,
|
|
StyleRuleInclusion aRuleInclusion) {
|
|
PreTraverseSync();
|
|
return ResolveStyleLazilyInternal(aElement, aPseudoType, aRuleInclusion);
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle>
|
|
ServoStyleSet::ResolveInheritingAnonymousBoxStyle(
|
|
nsAtom* aPseudoTag, ComputedStyle* aParentContext) {
|
|
MOZ_ASSERT(nsCSSAnonBoxes::IsAnonBox(aPseudoTag) &&
|
|
!nsCSSAnonBoxes::IsNonInheritingAnonBox(aPseudoTag));
|
|
MOZ_ASSERT_IF(aParentContext, !StylistNeedsUpdate());
|
|
|
|
UpdateStylistIfNeeded();
|
|
|
|
RefPtr<ComputedStyle> style = nullptr;
|
|
|
|
if (aParentContext) {
|
|
style = aParentContext->GetCachedInheritingAnonBoxStyle(aPseudoTag);
|
|
}
|
|
|
|
if (!style) {
|
|
style = Servo_ComputedValues_GetForAnonymousBox(aParentContext, aPseudoTag,
|
|
mRawSet.get())
|
|
.Consume();
|
|
MOZ_ASSERT(style);
|
|
if (aParentContext) {
|
|
aParentContext->SetCachedInheritedAnonBoxStyle(aPseudoTag, style);
|
|
}
|
|
}
|
|
|
|
return style.forget();
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle>
|
|
ServoStyleSet::ResolveNonInheritingAnonymousBoxStyle(nsAtom* aPseudoTag) {
|
|
MOZ_ASSERT(nsCSSAnonBoxes::IsAnonBox(aPseudoTag) &&
|
|
nsCSSAnonBoxes::IsNonInheritingAnonBox(aPseudoTag));
|
|
MOZ_ASSERT(aPseudoTag != nsCSSAnonBoxes::pageContent(),
|
|
"If nsCSSAnonBoxes::pageContent() ends up non-inheriting, check "
|
|
"whether we need to do anything to move the "
|
|
"@page handling from ResolveInheritingAnonymousBoxStyle to "
|
|
"ResolveNonInheritingAnonymousBoxStyle");
|
|
|
|
nsCSSAnonBoxes::NonInheriting type =
|
|
nsCSSAnonBoxes::NonInheritingTypeForPseudoTag(aPseudoTag);
|
|
RefPtr<ComputedStyle>& cache = mNonInheritingComputedStyles[type];
|
|
if (cache) {
|
|
RefPtr<ComputedStyle> retval = cache;
|
|
return retval.forget();
|
|
}
|
|
|
|
UpdateStylistIfNeeded();
|
|
|
|
// We always want to skip parent-based display fixup here. It never makes
|
|
// sense for non-inheriting anonymous boxes. (Static assertions in
|
|
// nsCSSAnonBoxes.cpp ensure that all non-inheriting non-anonymous boxes
|
|
// are indeed annotated as skipping this fixup.)
|
|
MOZ_ASSERT(
|
|
!nsCSSAnonBoxes::IsNonInheritingAnonBox(nsCSSAnonBoxes::viewport()),
|
|
"viewport needs fixup to handle blockifying it");
|
|
RefPtr<ComputedStyle> computedValues =
|
|
Servo_ComputedValues_GetForAnonymousBox(nullptr, aPseudoTag,
|
|
mRawSet.get())
|
|
.Consume();
|
|
#ifdef DEBUG
|
|
if (!computedValues) {
|
|
nsString pseudo;
|
|
aPseudoTag->ToString(pseudo);
|
|
NS_ERROR(nsPrintfCString("stylo: could not get anon-box: %s",
|
|
NS_ConvertUTF16toUTF8(pseudo).get())
|
|
.get());
|
|
MOZ_CRASH();
|
|
}
|
|
#endif
|
|
|
|
cache = computedValues;
|
|
return computedValues.forget();
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
already_AddRefed<ComputedStyle> ServoStyleSet::ResolveXULTreePseudoStyle(
|
|
dom::Element* aParentElement, nsCSSAnonBoxPseudoStaticAtom* aPseudoTag,
|
|
ComputedStyle* aParentContext, const AtomArray& aInputWord) {
|
|
MOZ_ASSERT(nsCSSAnonBoxes::IsTreePseudoElement(aPseudoTag));
|
|
MOZ_ASSERT(aParentContext);
|
|
MOZ_ASSERT(!StylistNeedsUpdate());
|
|
|
|
return Servo_ComputedValues_ResolveXULTreePseudoStyle(
|
|
aParentElement, aPseudoTag, aParentContext, &aInputWord,
|
|
mRawSet.get())
|
|
.Consume();
|
|
}
|
|
#endif
|
|
|
|
// manage the set of style sheets in the style set
|
|
nsresult ServoStyleSet::AppendStyleSheet(SheetType aType, StyleSheet* aSheet) {
|
|
MOZ_ASSERT(aSheet);
|
|
MOZ_ASSERT(aSheet->IsApplicable());
|
|
MOZ_ASSERT(IsCSSSheetType(aType));
|
|
MOZ_ASSERT(aSheet->RawContents(),
|
|
"Raw sheet should be in place before insertion.");
|
|
|
|
RemoveSheetOfType(aType, aSheet);
|
|
AppendSheetOfType(aType, aSheet);
|
|
|
|
if (mRawSet) {
|
|
// Maintain a mirrored list of sheets on the servo side.
|
|
// Servo will remove aSheet from its original position as part of the call
|
|
// to Servo_StyleSet_AppendStyleSheet.
|
|
Servo_StyleSet_AppendStyleSheet(mRawSet.get(), aSheet);
|
|
SetStylistStyleSheetsDirty();
|
|
}
|
|
|
|
if (mStyleRuleMap) {
|
|
mStyleRuleMap->SheetAdded(*aSheet);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult ServoStyleSet::RemoveStyleSheet(SheetType aType, StyleSheet* aSheet) {
|
|
MOZ_ASSERT(aSheet);
|
|
MOZ_ASSERT(IsCSSSheetType(aType));
|
|
|
|
RemoveSheetOfType(aType, aSheet);
|
|
if (mRawSet) {
|
|
// Maintain a mirrored list of sheets on the servo side.
|
|
Servo_StyleSet_RemoveStyleSheet(mRawSet.get(), aSheet);
|
|
SetStylistStyleSheetsDirty();
|
|
}
|
|
|
|
if (mStyleRuleMap) {
|
|
mStyleRuleMap->SheetRemoved(*aSheet);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult ServoStyleSet::ReplaceSheets(
|
|
SheetType aType, const nsTArray<RefPtr<StyleSheet>>& aNewSheets) {
|
|
// Gecko uses a two-dimensional array keyed by sheet type, whereas Servo
|
|
// stores a flattened list. This makes ReplaceSheets a pretty clunky thing
|
|
// to express. If the need ever arises, we can easily make this more efficent,
|
|
// probably by aligning the representations better between engines.
|
|
|
|
SetStylistStyleSheetsDirty();
|
|
|
|
// Remove all the existing sheets first.
|
|
for (const auto& sheet : mSheets[aType]) {
|
|
sheet->DropStyleSet(this);
|
|
if (mRawSet) {
|
|
Servo_StyleSet_RemoveStyleSheet(mRawSet.get(), sheet);
|
|
}
|
|
}
|
|
mSheets[aType].Clear();
|
|
|
|
// Add in all the new sheets.
|
|
for (auto& sheet : aNewSheets) {
|
|
AppendSheetOfType(aType, sheet);
|
|
if (mRawSet) {
|
|
MOZ_ASSERT(sheet->RawContents(),
|
|
"Raw sheet should be in place before replacement.");
|
|
Servo_StyleSet_AppendStyleSheet(mRawSet.get(), sheet);
|
|
}
|
|
}
|
|
|
|
// Just don't bother calling SheetRemoved / SheetAdded, and recreate the rule
|
|
// map when needed.
|
|
mStyleRuleMap = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult ServoStyleSet::InsertStyleSheetBefore(SheetType aType,
|
|
StyleSheet* aNewSheet,
|
|
StyleSheet* aReferenceSheet) {
|
|
MOZ_ASSERT(aNewSheet);
|
|
MOZ_ASSERT(aReferenceSheet);
|
|
MOZ_ASSERT(aNewSheet->IsApplicable());
|
|
MOZ_ASSERT(aNewSheet != aReferenceSheet, "Can't place sheet before itself.");
|
|
MOZ_ASSERT(aNewSheet->RawContents(),
|
|
"Raw sheet should be in place before insertion.");
|
|
MOZ_ASSERT(aReferenceSheet->RawContents(),
|
|
"Reference sheet should have a raw sheet.");
|
|
|
|
// Servo will remove aNewSheet from its original position as part of the
|
|
// call to Servo_StyleSet_InsertStyleSheetBefore.
|
|
RemoveSheetOfType(aType, aNewSheet);
|
|
InsertSheetOfType(aType, aNewSheet, aReferenceSheet);
|
|
|
|
if (mRawSet) {
|
|
// Maintain a mirrored list of sheets on the servo side.
|
|
Servo_StyleSet_InsertStyleSheetBefore(mRawSet.get(), aNewSheet,
|
|
aReferenceSheet);
|
|
SetStylistStyleSheetsDirty();
|
|
}
|
|
|
|
if (mStyleRuleMap) {
|
|
mStyleRuleMap->SheetAdded(*aNewSheet);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
int32_t ServoStyleSet::SheetCount(SheetType aType) const {
|
|
MOZ_ASSERT(IsCSSSheetType(aType));
|
|
return mSheets[aType].Length();
|
|
}
|
|
|
|
StyleSheet* ServoStyleSet::StyleSheetAt(SheetType aType, int32_t aIndex) const {
|
|
MOZ_ASSERT(IsCSSSheetType(aType));
|
|
return mSheets[aType][aIndex];
|
|
}
|
|
|
|
void ServoStyleSet::AppendAllNonDocumentAuthorSheets(
|
|
nsTArray<StyleSheet*>& aArray) const {
|
|
if (mDocument) {
|
|
mDocument->BindingManager()->AppendAllSheets(aArray);
|
|
EnumerateShadowRoots(*mDocument, [&](ShadowRoot& aShadowRoot) {
|
|
for (auto index : IntegerRange(aShadowRoot.SheetCount())) {
|
|
aArray.AppendElement(aShadowRoot.SheetAt(index));
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
nsresult ServoStyleSet::RemoveDocStyleSheet(StyleSheet* aSheet) {
|
|
return RemoveStyleSheet(SheetType::Doc, aSheet);
|
|
}
|
|
|
|
nsresult ServoStyleSet::AddDocStyleSheet(StyleSheet* aSheet,
|
|
Document* aDocument) {
|
|
MOZ_ASSERT(aSheet->IsApplicable());
|
|
MOZ_ASSERT(aSheet->RawContents(),
|
|
"Raw sheet should be in place by this point.");
|
|
|
|
RefPtr<StyleSheet> strong(aSheet);
|
|
|
|
RemoveSheetOfType(SheetType::Doc, aSheet);
|
|
|
|
size_t index = aDocument->FindDocStyleSheetInsertionPoint(
|
|
mSheets[SheetType::Doc], *aSheet);
|
|
|
|
if (index < mSheets[SheetType::Doc].Length()) {
|
|
// This case is insert before.
|
|
StyleSheet* beforeSheet = mSheets[SheetType::Doc][index];
|
|
InsertSheetOfType(SheetType::Doc, aSheet, beforeSheet);
|
|
|
|
if (mRawSet) {
|
|
// Maintain a mirrored list of sheets on the servo side.
|
|
Servo_StyleSet_InsertStyleSheetBefore(mRawSet.get(), aSheet, beforeSheet);
|
|
SetStylistStyleSheetsDirty();
|
|
}
|
|
} else {
|
|
// This case is append.
|
|
AppendSheetOfType(SheetType::Doc, aSheet);
|
|
|
|
if (mRawSet) {
|
|
// Maintain a mirrored list of sheets on the servo side.
|
|
Servo_StyleSet_AppendStyleSheet(mRawSet.get(), aSheet);
|
|
SetStylistStyleSheetsDirty();
|
|
}
|
|
}
|
|
|
|
if (mStyleRuleMap) {
|
|
mStyleRuleMap->SheetAdded(*aSheet);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle> ServoStyleSet::ProbePseudoElementStyle(
|
|
const Element& aOriginatingElement, CSSPseudoElementType aType,
|
|
ComputedStyle* aParentContext) {
|
|
// Runs from frame construction, this should have clean styles already, except
|
|
// with non-lazy FC...
|
|
UpdateStylistIfNeeded();
|
|
|
|
// NB: We ignore aParentContext, because in some cases
|
|
// (first-line/first-letter on anonymous box blocks) Gecko passes something
|
|
// nonsensical there. In all other cases we want to inherit directly from
|
|
// aOriginatingElement's styles anyway.
|
|
MOZ_ASSERT(aType < CSSPseudoElementType::Count);
|
|
|
|
bool cacheable =
|
|
LazyPseudoIsCacheable(aType, aOriginatingElement, aParentContext);
|
|
|
|
RefPtr<ComputedStyle> computedValues =
|
|
cacheable ? aParentContext->GetCachedLazyPseudoStyle(aType) : nullptr;
|
|
if (!computedValues) {
|
|
computedValues =
|
|
Servo_ResolvePseudoStyle(&aOriginatingElement, aType,
|
|
/* is_probe = */ true, nullptr, mRawSet.get())
|
|
.Consume();
|
|
if (!computedValues) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (cacheable) {
|
|
// NB: We don't need to worry about the before/after handling below
|
|
// because those are eager and thus not |cacheable| anyway.
|
|
aParentContext->SetCachedLazyPseudoStyle(computedValues);
|
|
}
|
|
}
|
|
|
|
// For :before and :after pseudo-elements, having display: none or no
|
|
// 'content' property is equivalent to not having the pseudo-element
|
|
// at all.
|
|
bool isBeforeOrAfter = aType == CSSPseudoElementType::before ||
|
|
aType == CSSPseudoElementType::after;
|
|
if (isBeforeOrAfter) {
|
|
const nsStyleDisplay* display = computedValues->StyleDisplay();
|
|
const nsStyleContent* content = computedValues->StyleContent();
|
|
if (display->mDisplay == StyleDisplay::None ||
|
|
content->ContentCount() == 0) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
return computedValues.forget();
|
|
}
|
|
|
|
bool ServoStyleSet::StyleDocument(ServoTraversalFlags aFlags) {
|
|
MOZ_ASSERT(GetPresContext(), "Styling a document without a shell?");
|
|
|
|
if (!mDocument->GetServoRestyleRoot()) {
|
|
return false;
|
|
}
|
|
|
|
PreTraverse(aFlags);
|
|
AutoPrepareTraversal guard(this);
|
|
const SnapshotTable& snapshots = Snapshots();
|
|
|
|
// Restyle the document from the root element and each of the document level
|
|
// NAC subtree roots.
|
|
bool postTraversalRequired = false;
|
|
|
|
Element* rootElement = mDocument->GetRootElement();
|
|
MOZ_ASSERT_IF(rootElement, rootElement->HasServoData());
|
|
|
|
if (ShouldTraverseInParallel()) {
|
|
aFlags |= ServoTraversalFlags::ParallelTraversal;
|
|
}
|
|
|
|
// Do the first traversal.
|
|
DocumentStyleRootIterator iter(mDocument->GetServoRestyleRoot());
|
|
while (Element* root = iter.GetNextStyleRoot()) {
|
|
MOZ_ASSERT(MayTraverseFrom(root));
|
|
|
|
Element* parent = root->GetFlattenedTreeParentElementForStyle();
|
|
MOZ_ASSERT_IF(parent,
|
|
!parent->HasAnyOfFlags(Element::kAllServoDescendantBits));
|
|
|
|
postTraversalRequired |=
|
|
Servo_TraverseSubtree(root, mRawSet.get(), &snapshots, aFlags);
|
|
postTraversalRequired |= root->HasAnyOfFlags(
|
|
Element::kAllServoDescendantBits | NODE_NEEDS_FRAME);
|
|
|
|
if (parent) {
|
|
MOZ_ASSERT(root == mDocument->GetServoRestyleRoot());
|
|
if (parent->HasDirtyDescendantsForServo()) {
|
|
// If any style invalidation was triggered in our siblings, then we may
|
|
// need to post-traverse them, even if the root wasn't restyled after
|
|
// all.
|
|
uint32_t existingBits = mDocument->GetServoRestyleRootDirtyBits();
|
|
// We need to propagate the existing bits to the parent.
|
|
parent->SetFlags(existingBits);
|
|
mDocument->SetServoRestyleRoot(
|
|
parent, existingBits | ELEMENT_HAS_DIRTY_DESCENDANTS_FOR_SERVO);
|
|
postTraversalRequired = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If there are still animation restyles needed, trigger a second traversal to
|
|
// update CSS animations or transitions' styles.
|
|
//
|
|
// Note that we need to check the style root again, because doing another
|
|
// PreTraverse on the EffectCompositor might alter the style root. But we
|
|
// don't need to worry about NAC, since document-level NAC shouldn't have
|
|
// animations.
|
|
//
|
|
// We don't need to do this for SMIL since SMIL only updates its animation
|
|
// values once at the begin of a tick. As a result, even if the previous
|
|
// traversal caused, for example, the font-size to change, the SMIL style
|
|
// won't be updated until the next tick anyway.
|
|
if (GetPresContext()->EffectCompositor()->PreTraverse(aFlags)) {
|
|
nsINode* styleRoot = mDocument->GetServoRestyleRoot();
|
|
Element* root =
|
|
styleRoot->IsElement() ? styleRoot->AsElement() : rootElement;
|
|
|
|
postTraversalRequired |=
|
|
Servo_TraverseSubtree(root, mRawSet.get(), &snapshots, aFlags);
|
|
postTraversalRequired |= root->HasAnyOfFlags(
|
|
Element::kAllServoDescendantBits | NODE_NEEDS_FRAME);
|
|
}
|
|
|
|
return postTraversalRequired;
|
|
}
|
|
|
|
void ServoStyleSet::StyleNewSubtree(Element* aRoot) {
|
|
MOZ_ASSERT(GetPresContext());
|
|
MOZ_ASSERT(!aRoot->HasServoData());
|
|
MOZ_ASSERT(aRoot->GetFlattenedTreeParentNodeForStyle(),
|
|
"Not in the flat tree? Fishy!");
|
|
PreTraverseSync();
|
|
AutoPrepareTraversal guard(this);
|
|
|
|
// Do the traversal. The snapshots will not be used.
|
|
const SnapshotTable& snapshots = Snapshots();
|
|
auto flags = ServoTraversalFlags::Empty;
|
|
if (ShouldTraverseInParallel()) {
|
|
flags |= ServoTraversalFlags::ParallelTraversal;
|
|
}
|
|
|
|
DebugOnly<bool> postTraversalRequired =
|
|
Servo_TraverseSubtree(aRoot, mRawSet.get(), &snapshots, flags);
|
|
MOZ_ASSERT(!postTraversalRequired);
|
|
|
|
// Annoyingly, the newly-styled content may have animations that need
|
|
// starting, which requires traversing them again. Mark the elements
|
|
// that need animation processing, then do a forgetful traversal to
|
|
// update the styles and clear the animation bits.
|
|
if (GetPresContext()->EffectCompositor()->PreTraverseInSubtree(flags,
|
|
aRoot)) {
|
|
postTraversalRequired = Servo_TraverseSubtree(
|
|
aRoot, mRawSet.get(), &snapshots,
|
|
ServoTraversalFlags::AnimationOnly | ServoTraversalFlags::Forgetful |
|
|
ServoTraversalFlags::ClearAnimationOnlyDirtyDescendants);
|
|
MOZ_ASSERT(!postTraversalRequired);
|
|
}
|
|
}
|
|
|
|
void ServoStyleSet::MarkOriginsDirty(OriginFlags aChangedOrigins) {
|
|
if (MOZ_UNLIKELY(!mRawSet)) {
|
|
return;
|
|
}
|
|
|
|
SetStylistStyleSheetsDirty();
|
|
Servo_StyleSet_NoteStyleSheetsChanged(mRawSet.get(), aChangedOrigins);
|
|
}
|
|
|
|
void ServoStyleSet::SetStylistStyleSheetsDirty() {
|
|
// Note that there's another hidden mutator of mStylistState for XBL style
|
|
// sets in MediumFeaturesChanged...
|
|
//
|
|
// We really need to stop using a full-blown StyleSet there...
|
|
mStylistState |= StylistState::StyleSheetsDirty;
|
|
|
|
// We need to invalidate cached style in getComputedStyle for undisplayed
|
|
// elements, since we don't know if any of the style sheet change that we
|
|
// do would affect undisplayed elements.
|
|
if (nsPresContext* presContext = GetPresContext()) {
|
|
// XBL sheets don't have a pres context, but invalidating the restyle
|
|
// generation in that case is handled by SetXBLStyleSheetsDirty in the
|
|
// "master" stylist.
|
|
presContext->RestyleManager()->IncrementUndisplayedRestyleGeneration();
|
|
}
|
|
}
|
|
|
|
void ServoStyleSet::SetStylistXBLStyleSheetsDirty() {
|
|
mStylistState |= StylistState::XBLStyleSheetsDirty;
|
|
|
|
// We need to invalidate cached style in getComputedStyle for undisplayed
|
|
// elements, since we don't know if any of the style sheet change that we
|
|
// do would affect undisplayed elements.
|
|
MOZ_ASSERT(GetPresContext());
|
|
GetPresContext()->RestyleManager()->IncrementUndisplayedRestyleGeneration();
|
|
}
|
|
|
|
void ServoStyleSet::RuleAdded(StyleSheet& aSheet, css::Rule& aRule) {
|
|
if (mStyleRuleMap) {
|
|
mStyleRuleMap->RuleAdded(aSheet, aRule);
|
|
}
|
|
|
|
// FIXME(emilio): Could be more granular based on aRule.
|
|
MarkOriginsDirty(aSheet.GetOrigin());
|
|
}
|
|
|
|
void ServoStyleSet::RuleRemoved(StyleSheet& aSheet, css::Rule& aRule) {
|
|
if (mStyleRuleMap) {
|
|
mStyleRuleMap->RuleRemoved(aSheet, aRule);
|
|
}
|
|
|
|
// FIXME(emilio): Could be more granular based on aRule.
|
|
MarkOriginsDirty(aSheet.GetOrigin());
|
|
}
|
|
|
|
void ServoStyleSet::RuleChanged(StyleSheet& aSheet, css::Rule* aRule) {
|
|
// FIXME(emilio): Could be more granular based on aRule.
|
|
MarkOriginsDirty(aSheet.GetOrigin());
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void ServoStyleSet::AssertTreeIsClean() {
|
|
DocumentStyleRootIterator iter(mDocument);
|
|
while (Element* root = iter.GetNextStyleRoot()) {
|
|
Servo_AssertTreeIsClean(root);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool ServoStyleSet::GetKeyframesForName(const Element& aElement,
|
|
const ComputedStyle& aStyle,
|
|
nsAtom* aName,
|
|
const nsTimingFunction& aTimingFunction,
|
|
nsTArray<Keyframe>& aKeyframes) {
|
|
MOZ_ASSERT(!StylistNeedsUpdate());
|
|
return Servo_StyleSet_GetKeyframesForName(
|
|
mRawSet.get(), &aElement, &aStyle, aName, &aTimingFunction, &aKeyframes);
|
|
}
|
|
|
|
nsTArray<ComputedKeyframeValues> ServoStyleSet::GetComputedKeyframeValuesFor(
|
|
const nsTArray<Keyframe>& aKeyframes, Element* aElement,
|
|
const mozilla::ComputedStyle* aStyle) {
|
|
nsTArray<ComputedKeyframeValues> result(aKeyframes.Length());
|
|
|
|
// Construct each nsTArray<PropertyStyleAnimationValuePair> here.
|
|
result.AppendElements(aKeyframes.Length());
|
|
|
|
Servo_GetComputedKeyframeValues(&aKeyframes, aElement, aStyle, mRawSet.get(),
|
|
&result);
|
|
return result;
|
|
}
|
|
|
|
void ServoStyleSet::GetAnimationValues(
|
|
RawServoDeclarationBlock* aDeclarations, Element* aElement,
|
|
const ComputedStyle* aComputedStyle,
|
|
nsTArray<RefPtr<RawServoAnimationValue>>& aAnimationValues) {
|
|
// Servo_GetAnimationValues below won't handle ignoring existing element
|
|
// data for bfcached documents. (See comment in ResolveStyleLazily
|
|
// about these bfcache issues.)
|
|
Servo_GetAnimationValues(aDeclarations, aElement, aComputedStyle,
|
|
mRawSet.get(), &aAnimationValues);
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle> ServoStyleSet::GetBaseContextForElement(
|
|
Element* aElement, const ComputedStyle* aStyle) {
|
|
return Servo_StyleSet_GetBaseComputedValuesForElement(mRawSet.get(), aElement,
|
|
aStyle, &Snapshots())
|
|
.Consume();
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle>
|
|
ServoStyleSet::ResolveServoStyleByAddingAnimation(
|
|
Element* aElement, const ComputedStyle* aStyle,
|
|
RawServoAnimationValue* aAnimationValue) {
|
|
return Servo_StyleSet_GetComputedValuesByAddingAnimation(
|
|
mRawSet.get(), aElement, aStyle, &Snapshots(), aAnimationValue)
|
|
.Consume();
|
|
}
|
|
|
|
already_AddRefed<RawServoAnimationValue> ServoStyleSet::ComputeAnimationValue(
|
|
Element* aElement, RawServoDeclarationBlock* aDeclarations,
|
|
const mozilla::ComputedStyle* aStyle) {
|
|
return Servo_AnimationValue_Compute(aElement, aDeclarations, aStyle,
|
|
mRawSet.get())
|
|
.Consume();
|
|
}
|
|
|
|
bool ServoStyleSet::EnsureUniqueInnerOnCSSSheets() {
|
|
using SheetOwner =
|
|
Variant<ServoStyleSet*, nsXBLPrototypeBinding*, ShadowRoot*>;
|
|
|
|
AutoTArray<Pair<StyleSheet*, SheetOwner>, 32> queue;
|
|
for (auto& entryArray : mSheets) {
|
|
for (auto& sheet : entryArray) {
|
|
StyleSheet* downcasted = sheet;
|
|
queue.AppendElement(MakePair(downcasted, SheetOwner{this}));
|
|
}
|
|
}
|
|
|
|
EnumerateShadowRoots(*mDocument, [&](ShadowRoot& aShadowRoot) {
|
|
for (auto index : IntegerRange(aShadowRoot.SheetCount())) {
|
|
queue.AppendElement(
|
|
MakePair(aShadowRoot.SheetAt(index), SheetOwner{&aShadowRoot}));
|
|
}
|
|
});
|
|
|
|
mDocument->BindingManager()->EnumerateBoundContentProtoBindings(
|
|
[&](nsXBLPrototypeBinding* aProto) {
|
|
AutoTArray<StyleSheet*, 3> sheets;
|
|
aProto->AppendStyleSheetsTo(sheets);
|
|
for (auto* sheet : sheets) {
|
|
queue.AppendElement(MakePair(sheet, SheetOwner{aProto}));
|
|
}
|
|
return true;
|
|
});
|
|
|
|
bool anyNonDocStyleChanged = false;
|
|
while (!queue.IsEmpty()) {
|
|
uint32_t idx = queue.Length() - 1;
|
|
auto* sheet = queue[idx].first();
|
|
SheetOwner owner = queue[idx].second();
|
|
queue.RemoveElementAt(idx);
|
|
|
|
if (!sheet->HasUniqueInner()) {
|
|
RawServoAuthorStyles* authorStyles = nullptr;
|
|
if (owner.is<ShadowRoot*>()) {
|
|
authorStyles = owner.as<ShadowRoot*>()->GetServoStyles();
|
|
} else if (owner.is<nsXBLPrototypeBinding*>()) {
|
|
authorStyles = owner.as<nsXBLPrototypeBinding*>()->GetServoStyles();
|
|
}
|
|
|
|
if (authorStyles) {
|
|
Servo_AuthorStyles_ForceDirty(authorStyles);
|
|
mNeedsRestyleAfterEnsureUniqueInner = true;
|
|
anyNonDocStyleChanged = true;
|
|
}
|
|
}
|
|
|
|
// Only call EnsureUniqueInner for complete sheets. If we do call it on
|
|
// incomplete sheets, we'll cause problems when the sheet is actually
|
|
// loaded. We don't care about incomplete sheets here anyway, because this
|
|
// method is only invoked by nsPresContext::EnsureSafeToHandOutCSSRules.
|
|
// The CSSRule objects we are handing out won't contain any rules derived
|
|
// from incomplete sheets (because they aren't yet applied in styling).
|
|
if (sheet->IsComplete()) {
|
|
sheet->EnsureUniqueInner();
|
|
}
|
|
|
|
// Enqueue all the sheet's children.
|
|
AutoTArray<StyleSheet*, 3> children;
|
|
sheet->AppendAllChildSheets(children);
|
|
for (auto* sheet : children) {
|
|
queue.AppendElement(MakePair(sheet, owner));
|
|
}
|
|
}
|
|
|
|
if (anyNonDocStyleChanged) {
|
|
SetStylistXBLStyleSheetsDirty();
|
|
}
|
|
|
|
if (mNeedsRestyleAfterEnsureUniqueInner) {
|
|
// TODO(emilio): We could make this faster if needed tracking the specific
|
|
// origins and all that, but the only caller of this doesn't seem to really
|
|
// care about perf.
|
|
MarkOriginsDirty(OriginFlags::All);
|
|
}
|
|
bool res = mNeedsRestyleAfterEnsureUniqueInner;
|
|
mNeedsRestyleAfterEnsureUniqueInner = false;
|
|
return res;
|
|
}
|
|
|
|
void ServoStyleSet::ClearCachedStyleData() {
|
|
ClearNonInheritingComputedStyles();
|
|
Servo_StyleSet_RebuildCachedData(mRawSet.get());
|
|
}
|
|
|
|
void ServoStyleSet::CompatibilityModeChanged() {
|
|
Servo_StyleSet_CompatModeChanged(mRawSet.get());
|
|
SetStylistStyleSheetsDirty();
|
|
}
|
|
|
|
void ServoStyleSet::ClearNonInheritingComputedStyles() {
|
|
for (RefPtr<ComputedStyle>& ptr : mNonInheritingComputedStyles) {
|
|
ptr = nullptr;
|
|
}
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle> ServoStyleSet::ResolveStyleLazilyInternal(
|
|
Element* aElement, CSSPseudoElementType aPseudoType,
|
|
StyleRuleInclusion aRuleInclusion) {
|
|
MOZ_ASSERT(GetPresContext(),
|
|
"For now, no style resolution without a pres context");
|
|
GetPresContext()->EffectCompositor()->PreTraverse(aElement, aPseudoType);
|
|
MOZ_ASSERT(!StylistNeedsUpdate());
|
|
|
|
AutoSetInServoTraversal guard(this);
|
|
|
|
/**
|
|
* NB: This is needed because we process animations and transitions on the
|
|
* pseudo-elements themselves, not on the parent's EagerPseudoStyles.
|
|
*
|
|
* That means that that style doesn't account for animations, and we can't do
|
|
* that easily from the traversal without doing wasted work.
|
|
*
|
|
* As such, we just lie here a bit, which is the entrypoint of
|
|
* getComputedStyle, the only API where this can be observed, to look at the
|
|
* style of the pseudo-element if it exists instead.
|
|
*/
|
|
Element* elementForStyleResolution = aElement;
|
|
CSSPseudoElementType pseudoTypeForStyleResolution = aPseudoType;
|
|
if (aPseudoType == CSSPseudoElementType::before) {
|
|
if (Element* pseudo = nsLayoutUtils::GetBeforePseudo(aElement)) {
|
|
elementForStyleResolution = pseudo;
|
|
pseudoTypeForStyleResolution = CSSPseudoElementType::NotPseudo;
|
|
}
|
|
} else if (aPseudoType == CSSPseudoElementType::after) {
|
|
if (Element* pseudo = nsLayoutUtils::GetAfterPseudo(aElement)) {
|
|
elementForStyleResolution = pseudo;
|
|
pseudoTypeForStyleResolution = CSSPseudoElementType::NotPseudo;
|
|
}
|
|
}
|
|
|
|
RefPtr<ComputedStyle> computedValues =
|
|
Servo_ResolveStyleLazily(elementForStyleResolution,
|
|
pseudoTypeForStyleResolution, aRuleInclusion,
|
|
&Snapshots(), mRawSet.get())
|
|
.Consume();
|
|
|
|
if (GetPresContext()->EffectCompositor()->PreTraverse(aElement,
|
|
aPseudoType)) {
|
|
computedValues =
|
|
Servo_ResolveStyleLazily(elementForStyleResolution,
|
|
pseudoTypeForStyleResolution, aRuleInclusion,
|
|
&Snapshots(), mRawSet.get())
|
|
.Consume();
|
|
}
|
|
|
|
return computedValues.forget();
|
|
}
|
|
|
|
bool ServoStyleSet::AppendFontFaceRules(
|
|
nsTArray<nsFontFaceRuleContainer>& aArray) {
|
|
// TODO(emilio): Can we make this so this asserts instead?
|
|
UpdateStylistIfNeeded();
|
|
Servo_StyleSet_GetFontFaceRules(mRawSet.get(), &aArray);
|
|
return true;
|
|
}
|
|
|
|
const RawServoCounterStyleRule* ServoStyleSet::CounterStyleRuleForName(
|
|
nsAtom* aName) {
|
|
MOZ_ASSERT(!StylistNeedsUpdate());
|
|
return Servo_StyleSet_GetCounterStyleRule(mRawSet.get(), aName);
|
|
}
|
|
|
|
already_AddRefed<gfxFontFeatureValueSet>
|
|
ServoStyleSet::BuildFontFeatureValueSet() {
|
|
MOZ_ASSERT(!StylistNeedsUpdate());
|
|
RefPtr<gfxFontFeatureValueSet> set =
|
|
Servo_StyleSet_BuildFontFeatureValueSet(mRawSet.get());
|
|
return set.forget();
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle> ServoStyleSet::ResolveForDeclarations(
|
|
const ComputedStyle* aParentOrNull,
|
|
RawServoDeclarationBlockBorrowed aDeclarations) {
|
|
// No need to update the stylist, we're only cascading aDeclarations.
|
|
return Servo_StyleSet_ResolveForDeclarations(mRawSet.get(), aParentOrNull,
|
|
aDeclarations)
|
|
.Consume();
|
|
}
|
|
|
|
void ServoStyleSet::UpdateStylist() {
|
|
MOZ_ASSERT(StylistNeedsUpdate());
|
|
|
|
if (mStylistState & StylistState::StyleSheetsDirty) {
|
|
// There's no need to compute invalidations and such for an XBL styleset,
|
|
// since they are loaded and unloaded synchronously, and they don't have to
|
|
// deal with dynamic content changes.
|
|
Element* root = mDocument->GetRootElement();
|
|
const ServoElementSnapshotTable* snapshots = nullptr;
|
|
if (nsPresContext* pc = GetPresContext()) {
|
|
snapshots = &pc->RestyleManager()->Snapshots();
|
|
}
|
|
Servo_StyleSet_FlushStyleSheets(mRawSet.get(), root, snapshots);
|
|
}
|
|
|
|
if (MOZ_UNLIKELY(mStylistState & StylistState::XBLStyleSheetsDirty)) {
|
|
MOZ_ASSERT(GetPresContext(), "How did they get dirty?");
|
|
|
|
EnumerateShadowRoots(*mDocument, [&](ShadowRoot& aShadowRoot) {
|
|
if (auto* authorStyles = aShadowRoot.GetServoStyles()) {
|
|
Servo_AuthorStyles_Flush(authorStyles, mRawSet.get());
|
|
}
|
|
});
|
|
|
|
mDocument->BindingManager()->EnumerateBoundContentProtoBindings(
|
|
[&](nsXBLPrototypeBinding* aProto) {
|
|
if (auto* authorStyles = aProto->GetServoStyles()) {
|
|
Servo_AuthorStyles_Flush(authorStyles, mRawSet.get());
|
|
}
|
|
return true;
|
|
});
|
|
}
|
|
|
|
mStylistState = StylistState::NotDirty;
|
|
}
|
|
|
|
void ServoStyleSet::MaybeGCRuleTree() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
Servo_MaybeGCRuleTree(mRawSet.get());
|
|
}
|
|
|
|
/* static */ bool ServoStyleSet::MayTraverseFrom(const Element* aElement) {
|
|
MOZ_ASSERT(aElement->IsInComposedDoc());
|
|
nsINode* parent = aElement->GetFlattenedTreeParentNodeForStyle();
|
|
if (!parent) {
|
|
return false;
|
|
}
|
|
|
|
if (!parent->IsElement()) {
|
|
MOZ_ASSERT(parent->IsDocument());
|
|
return true;
|
|
}
|
|
|
|
if (!parent->AsElement()->HasServoData()) {
|
|
return false;
|
|
}
|
|
|
|
return !Servo_Element_IsDisplayNone(parent->AsElement());
|
|
}
|
|
|
|
bool ServoStyleSet::ShouldTraverseInParallel() const {
|
|
MOZ_ASSERT(mDocument->GetShell(), "Styling a document without a shell?");
|
|
if (!mDocument->GetShell()->IsActive()) {
|
|
return false;
|
|
}
|
|
#ifdef MOZ_GECKO_PROFILER
|
|
if (profiler_feature_active(ProfilerFeature::SequentialStyle)) {
|
|
return false;
|
|
}
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
void ServoStyleSet::PrependSheetOfType(SheetType aType, StyleSheet* aSheet) {
|
|
aSheet->AddStyleSet(this);
|
|
mSheets[aType].InsertElementAt(0, aSheet);
|
|
}
|
|
|
|
void ServoStyleSet::AppendSheetOfType(SheetType aType, StyleSheet* aSheet) {
|
|
aSheet->AddStyleSet(this);
|
|
mSheets[aType].AppendElement(aSheet);
|
|
}
|
|
|
|
void ServoStyleSet::InsertSheetOfType(SheetType aType, StyleSheet* aSheet,
|
|
StyleSheet* aBeforeSheet) {
|
|
for (uint32_t i = 0; i < mSheets[aType].Length(); ++i) {
|
|
if (mSheets[aType][i] == aBeforeSheet) {
|
|
aSheet->AddStyleSet(this);
|
|
mSheets[aType].InsertElementAt(i, aSheet);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ServoStyleSet::RemoveSheetOfType(SheetType aType, StyleSheet* aSheet) {
|
|
for (uint32_t i = 0; i < mSheets[aType].Length(); ++i) {
|
|
if (mSheets[aType][i] == aSheet) {
|
|
aSheet->DropStyleSet(this);
|
|
mSheets[aType].RemoveElementAt(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
void ServoStyleSet::RunPostTraversalTasks() {
|
|
MOZ_ASSERT(!IsInServoTraversal());
|
|
|
|
if (mPostTraversalTasks.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
nsTArray<PostTraversalTask> tasks;
|
|
tasks.SwapElements(mPostTraversalTasks);
|
|
|
|
for (auto& task : tasks) {
|
|
task.Run();
|
|
}
|
|
}
|
|
|
|
ServoStyleRuleMap* ServoStyleSet::StyleRuleMap() {
|
|
if (!mStyleRuleMap) {
|
|
mStyleRuleMap = MakeUnique<ServoStyleRuleMap>();
|
|
}
|
|
mStyleRuleMap->EnsureTable(*this);
|
|
return mStyleRuleMap.get();
|
|
}
|
|
|
|
bool ServoStyleSet::MightHaveAttributeDependency(const Element& aElement,
|
|
nsAtom* aAttribute) const {
|
|
return Servo_StyleSet_MightHaveAttributeDependency(mRawSet.get(), &aElement,
|
|
aAttribute);
|
|
}
|
|
|
|
bool ServoStyleSet::HasStateDependency(const Element& aElement,
|
|
EventStates aState) const {
|
|
return Servo_StyleSet_HasStateDependency(mRawSet.get(), &aElement,
|
|
aState.ServoValue());
|
|
}
|
|
|
|
bool ServoStyleSet::HasDocumentStateDependency(EventStates aState) const {
|
|
return Servo_StyleSet_HasDocumentStateDependency(mRawSet.get(),
|
|
aState.ServoValue());
|
|
}
|
|
|
|
already_AddRefed<ComputedStyle> ServoStyleSet::ReparentComputedStyle(
|
|
ComputedStyle* aComputedStyle, ComputedStyle* aNewParent,
|
|
ComputedStyle* aNewParentIgnoringFirstLine, ComputedStyle* aNewLayoutParent,
|
|
Element* aElement) {
|
|
return Servo_ReparentStyle(aComputedStyle, aNewParent,
|
|
aNewParentIgnoringFirstLine, aNewLayoutParent,
|
|
aElement, mRawSet.get())
|
|
.Consume();
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(UACacheReporter, nsIMemoryReporter)
|
|
|
|
MOZ_DEFINE_MALLOC_SIZE_OF(ServoUACacheMallocSizeOf)
|
|
MOZ_DEFINE_MALLOC_ENCLOSING_SIZE_OF(ServoUACacheMallocEnclosingSizeOf)
|
|
|
|
NS_IMETHODIMP
|
|
UACacheReporter::CollectReports(nsIHandleReportCallback* aHandleReport,
|
|
nsISupports* aData, bool aAnonymize) {
|
|
ServoStyleSetSizes sizes;
|
|
Servo_UACache_AddSizeOf(ServoUACacheMallocSizeOf,
|
|
ServoUACacheMallocEnclosingSizeOf, &sizes);
|
|
|
|
#define REPORT(_path, _amount, _desc) \
|
|
do { \
|
|
size_t __amount = _amount; /* evaluate _amount only once */ \
|
|
if (__amount > 0) { \
|
|
MOZ_COLLECT_REPORT(_path, KIND_HEAP, UNITS_BYTES, __amount, _desc); \
|
|
} \
|
|
} while (0)
|
|
|
|
// The UA cache does not contain the rule tree; that's in the StyleSet.
|
|
MOZ_RELEASE_ASSERT(sizes.mRuleTree == 0);
|
|
|
|
REPORT("explicit/layout/servo-ua-cache/precomputed-pseudos",
|
|
sizes.mPrecomputedPseudos,
|
|
"Memory used by precomputed pseudo-element declarations within the "
|
|
"UA cache.");
|
|
|
|
REPORT("explicit/layout/servo-ua-cache/element-and-pseudos-maps",
|
|
sizes.mElementAndPseudosMaps,
|
|
"Memory used by element and pseudos maps within the UA cache.");
|
|
|
|
REPORT("explicit/layout/servo-ua-cache/invalidation-map",
|
|
sizes.mInvalidationMap,
|
|
"Memory used by invalidation maps within the UA cache.");
|
|
|
|
REPORT("explicit/layout/servo-ua-cache/revalidation-selectors",
|
|
sizes.mRevalidationSelectors,
|
|
"Memory used by selectors for cache revalidation within the UA "
|
|
"cache.");
|
|
|
|
REPORT("explicit/layout/servo-ua-cache/other", sizes.mOther,
|
|
"Memory used by other data within the UA cache");
|
|
|
|
return NS_OK;
|
|
}
|