1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/* -*- 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 {
// 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, nsIAtom* aElementProperty)
: mElement(aElement)
, mElementProperty(aElementProperty)
, mCheckGeneration(0)
#ifdef DEBUG
, mCalledPropertyDtor(false)
#endif
{
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()
{
// This will call our destructor.
mElement->DeleteProperty(mElementProperty);
}
static void PropertyDtor(void *aObject, nsIAtom *aPropertyName,
void *aPropertyValue, void *aData);
// Get the collection of animations for the given |aElement| and
// |aPseudoType|.
static AnimationCollection<AnimationType>*
GetAnimationCollection(dom::Element* aElement,
CSSPseudoElementType 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,
CSSPseudoElementType aPseudoType,
bool* aCreatedCollection);
bool IsForElement() const { // rather than for a pseudo-element
return mElementProperty == TraitsType::ElementPropertyAtom();
}
bool IsForBeforePseudo() const {
return mElementProperty == TraitsType::BeforePropertyAtom();
}
bool IsForAfterPseudo() const {
return mElementProperty == TraitsType::AfterPropertyAtom();
}
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;
InfallibleTArray<RefPtr<AnimationType>> 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:
static nsIAtom* GetPropertyAtomForPseudoType(
CSSPseudoElementType aPseudoType);
#ifdef DEBUG
bool mCalledPropertyDtor;
#endif
};
} // namespace mozilla
#endif // mozilla_AnimationCollection_h
|
