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
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CustomElementMicrotaskDispatcher_h
#define CustomElementMicrotaskDispatcher_h
#include "platform/heap/Handle.h"
#include "wtf/Noncopyable.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/Vector.h"
namespace blink {
class CustomElementCallbackQueue;
class CustomElementMicrotaskDispatcher final : public NoBaseWillBeGarbageCollected<CustomElementMicrotaskDispatcher> {
WTF_MAKE_NONCOPYABLE(CustomElementMicrotaskDispatcher);
DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(CustomElementMicrotaskDispatcher);
public:
static CustomElementMicrotaskDispatcher& instance();
void enqueue(CustomElementCallbackQueue*);
bool elementQueueIsEmpty() { return m_elements.isEmpty(); }
void trace(Visitor*);
private:
CustomElementMicrotaskDispatcher();
void ensureMicrotaskScheduledForElementQueue();
void ensureMicrotaskScheduled();
static void dispatch();
void doDispatch();
bool m_hasScheduledMicrotask;
enum {
Quiescent,
Resolving,
DispatchingCallbacks
} m_phase;
WillBeHeapVector<RawPtrWillBeMember<CustomElementCallbackQueue> > m_elements;
};
} // namespace blink
#endif // CustomElementMicrotaskDispatcher_h
|
