зеркало из https://github.com/mozilla/gecko-dev.git
104 строки
3.5 KiB
C++
104 строки
3.5 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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#ifndef mozilla_ServoRestyleManager_h
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#define mozilla_ServoRestyleManager_h
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#include "mozilla/EventStates.h"
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#include "mozilla/RestyleManagerBase.h"
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#include "nsChangeHint.h"
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#include "nsISupportsImpl.h"
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#include "nsPresContext.h"
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#include "nsINode.h"
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namespace mozilla {
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namespace dom {
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class Element;
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} // namespace dom
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} // namespace mozilla
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class nsAttrValue;
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class nsIAtom;
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class nsIContent;
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class nsIFrame;
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namespace mozilla {
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/**
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* Restyle manager for a Servo-backed style system.
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*/
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class ServoRestyleManager : public RestyleManagerBase
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{
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friend class ServoStyleSet;
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public:
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NS_INLINE_DECL_REFCOUNTING(ServoRestyleManager)
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explicit ServoRestyleManager(nsPresContext* aPresContext);
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void PostRestyleEvent(dom::Element* aElement,
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nsRestyleHint aRestyleHint,
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nsChangeHint aMinChangeHint);
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void PostRestyleEventForLazyConstruction();
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void RebuildAllStyleData(nsChangeHint aExtraHint,
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nsRestyleHint aRestyleHint);
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void PostRebuildAllStyleDataEvent(nsChangeHint aExtraHint,
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nsRestyleHint aRestyleHint);
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void ProcessPendingRestyles();
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void RestyleForInsertOrChange(dom::Element* aContainer,
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nsIContent* aChild);
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void RestyleForAppend(dom::Element* aContainer,
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nsIContent* aFirstNewContent);
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void RestyleForRemove(dom::Element* aContainer,
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nsIContent* aOldChild,
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nsIContent* aFollowingSibling);
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nsresult ContentStateChanged(nsIContent* aContent,
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EventStates aStateMask);
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void AttributeWillChange(dom::Element* aElement,
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int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aNewValue);
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void AttributeChanged(dom::Element* aElement,
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int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue);
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nsresult ReparentStyleContext(nsIFrame* aFrame);
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bool HasPendingRestyles();
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protected:
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~ServoRestyleManager() {}
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private:
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/**
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* Traverses a tree of content that Servo has just restyled, recreating style
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* contexts for their frames with the new style data.
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*
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* This is just static so ServoStyleSet can mark this class as friend, so we
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* can access to the GetContext method without making it available to everyone
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* else.
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*/
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static void RecreateStyleContexts(nsIContent* aContent,
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nsStyleContext* aParentContext,
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ServoStyleSet* aStyleSet);
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/**
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* Propagates the IS_DIRTY flag down to the tree, setting
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* HAS_DIRTY_DESCENDANTS appropriately.
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*/
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static void DirtyTree(nsIContent* aContent);
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inline ServoStyleSet* StyleSet() const {
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MOZ_ASSERT(PresContext()->StyleSet()->IsServo(),
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"ServoRestyleManager should only be used with a Servo-flavored "
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"style backend");
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return PresContext()->StyleSet()->AsServo();
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}
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};
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} // namespace mozilla
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#endif // mozilla_ServoRestyleManager_h
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