gecko-dev/layout/style/AnimationCollection.h

113 lines
3.3 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_AnimationCollection_h
#define mozilla_AnimationCollection_h
#include "mozilla/dom/Animation.h"
#include "mozilla/dom/Element.h"
#include "mozilla/Assertions.h"
#include "mozilla/LinkedList.h"
#include "mozilla/RefPtr.h"
#include "nsCSSPseudoElements.h"
#include "nsDOMMutationObserver.h"
#include "nsTArray.h"
class nsIAtom;
class nsPresContext;
namespace mozilla {
typedef InfallibleTArray<RefPtr<dom::Animation>> AnimationPtrArray;
struct AnimationCollection : public LinkedListElement<AnimationCollection>
{
AnimationCollection(dom::Element* aElement, nsIAtom* aElementProperty)
: mElement(aElement)
, mElementProperty(aElementProperty)
, mCheckGeneration(0)
#ifdef DEBUG
, mCalledPropertyDtor(false)
#endif
{
MOZ_COUNT_CTOR(AnimationCollection);
}
~AnimationCollection()
{
MOZ_ASSERT(mCalledPropertyDtor,
"must call destructor through element property dtor");
MOZ_COUNT_DTOR(AnimationCollection);
remove();
}
void Destroy()
{
// This will call our destructor.
mElement->DeleteProperty(mElementProperty);
}
static void PropertyDtor(void *aObject, nsIAtom *aPropertyName,
void *aPropertyValue, void *aData);
public:
bool IsForElement() const { // rather than for a pseudo-element
return mElementProperty == nsGkAtoms::animationsProperty ||
mElementProperty == nsGkAtoms::transitionsProperty;
}
bool IsForBeforePseudo() const {
return mElementProperty == nsGkAtoms::animationsOfBeforeProperty ||
mElementProperty == nsGkAtoms::transitionsOfBeforeProperty;
}
bool IsForAfterPseudo() const {
return mElementProperty == nsGkAtoms::animationsOfAfterProperty ||
mElementProperty == nsGkAtoms::transitionsOfAfterProperty;
}
CSSPseudoElementType PseudoElementType() const
{
if (IsForElement()) {
return CSSPseudoElementType::NotPseudo;
}
if (IsForBeforePseudo()) {
return CSSPseudoElementType::before;
}
MOZ_ASSERT(IsForAfterPseudo(),
"::before & ::after should be the only pseudo-elements here");
return CSSPseudoElementType::after;
}
static nsString PseudoTypeAsString(CSSPseudoElementType aPseudoType);
dom::Element *mElement;
// the atom we use in mElement's prop table (must be a static atom,
// i.e., in an atom list)
nsIAtom *mElementProperty;
AnimationPtrArray mAnimations;
// For CSS transitions only, we record the most recent generation
// for which we've done the transition update, so that we avoid doing
// it more than once per style change.
// (Note that we also store an animation generation on each EffectSet in
// order to track when we need to update animations on layers.)
uint64_t mCheckGeneration;
// Update mCheckGeneration to RestyleManager's count
void UpdateCheckGeneration(nsPresContext* aPresContext);
private:
#ifdef DEBUG
bool mCalledPropertyDtor;
#endif
};
} // namespace mozilla
#endif // mozilla_AnimationCollection_h