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
|
/* -*- 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 "mozilla/dom/PermissionStatus.h"
#include "mozilla/PermissionDelegateHandler.h"
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/Permission.h"
#include "mozilla/Services.h"
#include "nsIPermissionManager.h"
#include "PermissionObserver.h"
#include "PermissionUtils.h"
namespace mozilla::dom {
/* static */
already_AddRefed<PermissionStatus> PermissionStatus::Create(
nsPIDOMWindowInner* aWindow, PermissionName aName, ErrorResult& aRv) {
RefPtr<PermissionStatus> status = new PermissionStatus(aWindow, aName);
aRv = status->Init();
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return status.forget();
}
PermissionStatus::PermissionStatus(nsPIDOMWindowInner* aWindow,
PermissionName aName)
: DOMEventTargetHelper(aWindow),
mName(aName),
mState(PermissionState::Denied) {
KeepAliveIfHasListenersFor(nsGkAtoms::onchange);
}
nsresult PermissionStatus::Init() {
mObserver = PermissionObserver::GetInstance();
if (NS_WARN_IF(!mObserver)) {
return NS_ERROR_FAILURE;
}
mObserver->AddSink(this);
nsresult rv = UpdateState();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
PermissionStatus::~PermissionStatus() {
if (mObserver) {
mObserver->RemoveSink(this);
}
}
JSObject* PermissionStatus::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return PermissionStatus_Binding::Wrap(aCx, this, aGivenProto);
}
nsLiteralCString PermissionStatus::GetPermissionType() {
return PermissionNameToType(mName);
}
nsresult PermissionStatus::UpdateState() {
nsCOMPtr<nsPIDOMWindowInner> window = GetOwner();
if (NS_WARN_IF(!window)) {
return NS_ERROR_FAILURE;
}
RefPtr<Document> document = window->GetExtantDoc();
if (NS_WARN_IF(!document)) {
return NS_ERROR_FAILURE;
}
uint32_t action = nsIPermissionManager::DENY_ACTION;
PermissionDelegateHandler* permissionHandler =
document->GetPermissionDelegateHandler();
if (NS_WARN_IF(!permissionHandler)) {
return NS_ERROR_FAILURE;
}
nsresult rv = permissionHandler->GetPermissionForPermissionsAPI(
GetPermissionType(), &action);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
mState = ActionToPermissionState(action);
return NS_OK;
}
already_AddRefed<nsIPrincipal> PermissionStatus::GetPrincipal() const {
nsCOMPtr<nsPIDOMWindowInner> window = GetOwner();
if (NS_WARN_IF(!window)) {
return nullptr;
}
Document* doc = window->GetExtantDoc();
if (NS_WARN_IF(!doc)) {
return nullptr;
}
nsCOMPtr<nsIPrincipal> principal =
Permission::ClonePrincipalForPermission(doc->NodePrincipal());
NS_ENSURE_TRUE(principal, nullptr);
return principal.forget();
}
void PermissionStatus::PermissionChanged() {
nsCOMPtr<nsPIDOMWindowInner> window = GetOwner();
if (NS_WARN_IF(!window) || !window->IsFullyActive()) {
return;
}
auto oldState = mState;
UpdateState();
if (mState != oldState) {
RefPtr<AsyncEventDispatcher> eventDispatcher =
new AsyncEventDispatcher(this, u"change"_ns, CanBubble::eNo);
eventDispatcher->PostDOMEvent();
}
}
void PermissionStatus::DisconnectFromOwner() {
IgnoreKeepAliveIfHasListenersFor(nsGkAtoms::onchange);
if (mObserver) {
mObserver->RemoveSink(this);
mObserver = nullptr;
}
DOMEventTargetHelper::DisconnectFromOwner();
}
} // namespace mozilla::dom
|
