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
148
149
150
151
|
/* -*- 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/. */
#include "FetchSignal.h"
#include "FetchController.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/FetchSignalBinding.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_CLASS(FetchSignal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(FetchSignal,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mController)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(FetchSignal,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mController)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(FetchSignal)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_ADDREF_INHERITED(FetchSignal, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(FetchSignal, DOMEventTargetHelper)
FetchSignal::FetchSignal(FetchController* aController,
bool aAborted)
: DOMEventTargetHelper(aController->GetParentObject())
, mController(aController)
, mAborted(aAborted)
{}
FetchSignal::FetchSignal(bool aAborted)
: mAborted(aAborted)
{}
JSObject*
FetchSignal::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return FetchSignalBinding::Wrap(aCx, this, aGivenProto);
}
bool
FetchSignal::Aborted() const
{
return mAborted;
}
void
FetchSignal::Abort()
{
MOZ_ASSERT(!mAborted);
mAborted = true;
// Let's inform the followers.
for (uint32_t i = 0; i < mFollowers.Length(); ++i) {
mFollowers[i]->Aborted();
}
EventInit init;
init.mBubbles = false;
init.mCancelable = false;
// TODO which kind of event should we dispatch here?
RefPtr<Event> event =
Event::Constructor(this, NS_LITERAL_STRING("abort"), init);
event->SetTrusted(true);
bool dummy;
DispatchEvent(event, &dummy);
}
void
FetchSignal::AddFollower(FetchSignal::Follower* aFollower)
{
MOZ_DIAGNOSTIC_ASSERT(aFollower);
if (!mFollowers.Contains(aFollower)) {
mFollowers.AppendElement(aFollower);
}
}
void
FetchSignal::RemoveFollower(FetchSignal::Follower* aFollower)
{
MOZ_DIAGNOSTIC_ASSERT(aFollower);
mFollowers.RemoveElement(aFollower);
}
bool
FetchSignal::CanAcceptFollower(FetchSignal::Follower* aFollower) const
{
MOZ_DIAGNOSTIC_ASSERT(aFollower);
if (!mController) {
return true;
}
if (aFollower == mController) {
return false;
}
FetchSignal* following = mController->Following();
if (!following) {
return true;
}
return following->CanAcceptFollower(aFollower);
}
// FetchSignal::Follower
// ----------------------------------------------------------------------------
FetchSignal::Follower::~Follower()
{
Unfollow();
}
void
FetchSignal::Follower::Follow(FetchSignal* aSignal)
{
MOZ_DIAGNOSTIC_ASSERT(aSignal);
if (!aSignal->CanAcceptFollower(this)) {
return;
}
Unfollow();
mFollowingSignal = aSignal;
aSignal->AddFollower(this);
}
void
FetchSignal::Follower::Unfollow()
{
if (mFollowingSignal) {
mFollowingSignal->RemoveFollower(this);
mFollowingSignal = nullptr;
}
}
} // dom namespace
} // mozilla namespace
|
