зеркало из https://github.com/mozilla/gecko-dev.git
112 строки
3.7 KiB
C++
112 строки
3.7 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 nsAtom;
|
|
class nsIFrame;
|
|
class nsPresContext;
|
|
|
|
namespace mozilla {
|
|
|
|
// Traits class to define the specific atoms used when storing specializations
|
|
// of AnimationCollection as a property on an Element (e.g. which atom
|
|
// to use when storing an AnimationCollection<CSSAnimation> for a ::before
|
|
// pseudo-element).
|
|
template <class AnimationType>
|
|
struct AnimationTypeTraits {};
|
|
|
|
template <class AnimationType>
|
|
class AnimationCollection
|
|
: public LinkedListElement<AnimationCollection<AnimationType>> {
|
|
typedef AnimationCollection<AnimationType> SelfType;
|
|
typedef AnimationTypeTraits<AnimationType> TraitsType;
|
|
|
|
AnimationCollection(dom::Element* aElement, nsAtom* aElementProperty)
|
|
: mElement(aElement), mElementProperty(aElementProperty) {
|
|
MOZ_COUNT_CTOR(AnimationCollection);
|
|
}
|
|
|
|
public:
|
|
~AnimationCollection() {
|
|
MOZ_ASSERT(mCalledPropertyDtor,
|
|
"must call destructor through element property dtor");
|
|
MOZ_COUNT_DTOR(AnimationCollection);
|
|
LinkedListElement<SelfType>::remove();
|
|
}
|
|
|
|
void Destroy() {
|
|
mCalledDestroy = true;
|
|
|
|
// This will call our destructor.
|
|
mElement->RemoveProperty(mElementProperty);
|
|
}
|
|
|
|
static void PropertyDtor(void* aObject, nsAtom* aPropertyName,
|
|
void* aPropertyValue, void* aData);
|
|
|
|
// Get the collection of animations for the given |aElement| and
|
|
// |aPseudoType|.
|
|
static AnimationCollection<AnimationType>* GetAnimationCollection(
|
|
const dom::Element* aElement, PseudoStyleType aPseudoType);
|
|
|
|
// Given the frame |aFrame| with possibly animated content, finds its
|
|
// associated collection of animations. If |aFrame| is a generated content
|
|
// frame, this function may examine the parent frame to search for such
|
|
// animations.
|
|
static AnimationCollection<AnimationType>* GetAnimationCollection(
|
|
const nsIFrame* aFrame);
|
|
|
|
// Get the collection of animations for the given |aElement| and
|
|
// |aPseudoType| or create it if it does not already exist.
|
|
//
|
|
// We'll set the outparam |aCreatedCollection| to true if we have
|
|
// to create the collection and we successfully do so. Otherwise,
|
|
// we'll set it to false.
|
|
static AnimationCollection<AnimationType>* GetOrCreateAnimationCollection(
|
|
dom::Element* aElement, PseudoStyleType aPseudoType,
|
|
bool* aCreatedCollection);
|
|
|
|
dom::Element* mElement;
|
|
|
|
// the atom we use in mElement's prop table (must be a static atom,
|
|
// i.e., in an atom list)
|
|
nsAtom* mElementProperty;
|
|
|
|
nsTArray<RefPtr<AnimationType>> mAnimations;
|
|
|
|
private:
|
|
static nsAtom* GetPropertyAtomForPseudoType(PseudoStyleType aPseudoType);
|
|
|
|
// We distinguish between destroying this by calling Destroy() vs directly
|
|
// calling RemoveProperty on an element.
|
|
//
|
|
// The former case represents regular updating due to style changes and should
|
|
// trigger subsequent restyles.
|
|
//
|
|
// The latter case represents document tear-down or other DOM surgery in
|
|
// which case we should not trigger restyles.
|
|
bool mCalledDestroy = false;
|
|
|
|
#ifdef DEBUG
|
|
bool mCalledPropertyDtor = false;
|
|
#endif
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_AnimationCollection_h
|