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
|
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* 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_dom_workers_listenermanager_h__
#define mozilla_dom_workers_listenermanager_h__
#include "mozilla/dom/workers/Workers.h"
#include "prclist.h"
#include "mozilla/ErrorResult.h"
BEGIN_WORKERS_NAMESPACE
class EventTarget;
// XXX Current impl doesn't divide into phases.
// XXX Current impl doesn't handle event target chains.
class EventListenerManager
{
PRCList mCollectionHead;
public:
EventListenerManager()
{
PR_INIT_CLIST(&mCollectionHead);
}
#ifdef DEBUG
~EventListenerManager();
#endif
void
_trace(JSTracer* aTrc) const
{
if (!PR_CLIST_IS_EMPTY(&mCollectionHead)) {
TraceInternal(aTrc);
}
}
void
_finalize(JSFreeOp* aFop)
{
if (!PR_CLIST_IS_EMPTY(&mCollectionHead)) {
FinalizeInternal(aFop);
}
}
enum Phase
{
All = 0,
Capturing,
Onfoo,
Bubbling
};
void
AddEventListener(JSContext* aCx, const jsid& aType, JSObject* aListener,
bool aCapturing, bool aWantsUntrusted, ErrorResult& aRv)
{
Add(aCx, aType, aListener, aCapturing ? Capturing : Bubbling,
aWantsUntrusted, aRv);
}
void
RemoveEventListener(JSContext* aCx, const jsid& aType, JSObject* aListener,
bool aCapturing)
{
if (PR_CLIST_IS_EMPTY(&mCollectionHead)) {
return;
}
Remove(aCx, aType, aListener, aCapturing ? Capturing : Bubbling, true);
}
bool
DispatchEvent(JSContext* aCx, const EventTarget& aTarget, JSObject* aEvent,
ErrorResult& aRv) const;
JSObject*
GetEventListener(const jsid& aType) const;
void
SetEventListener(JSContext* aCx, const jsid& aType, JSObject* aListener,
ErrorResult& aRv)
{
JSObject* existing = GetEventListener(aType);
if (existing) {
Remove(aCx, aType, existing, Onfoo, false);
}
if (aListener) {
Add(aCx, aType, aListener, Onfoo, false, aRv);
}
}
bool
HasListeners() const
{
return !PR_CLIST_IS_EMPTY(&mCollectionHead);
}
bool
HasListenersForType(JSContext* aCx, const jsid& aType) const
{
return HasListeners() && HasListenersForTypeInternal(aCx, aType);
}
private:
void
TraceInternal(JSTracer* aTrc) const;
void
FinalizeInternal(JSFreeOp* aFop);
void
Add(JSContext* aCx, const jsid& aType, JSObject* aListener, Phase aPhase,
bool aWantsUntrusted, ErrorResult& aRv);
void
Remove(JSContext* aCx, const jsid& aType, JSObject* aListener, Phase aPhase,
bool aClearEmpty);
bool
HasListenersForTypeInternal(JSContext* aCx, const jsid& aType) const;
};
END_WORKERS_NAMESPACE
#endif /* mozilla_dom_workers_listenermanager_h__ */
|
