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
152
153
154
155
156
|
// Copyright 2018 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.
#include "third_party/blink/renderer/modules/keyboard/keyboard_lock.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/platform/bindings/v8_binding.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
namespace blink {
namespace {
constexpr char kKeyboardLockFrameDetachedErrorMsg[] =
"Current frame is detached.";
constexpr char kKeyboardLockPromisePreemptedErrorMsg[] =
"This request has been superseded by a subsequent lock() method call.";
constexpr char kKeyboardLockNoValidKeyCodesErrorMsg[] =
"No valid key codes passed into lock().";
constexpr char kKeyboardLockChildFrameErrorMsg[] =
"lock() must be called from a top-level browsing context.";
constexpr char kKeyboardLockRequestFailedErrorMsg[] =
"lock() request could not be registered.";
} // namespace
KeyboardLock::KeyboardLock(ExecutionContext* context)
: ContextLifecycleObserver(context) {}
KeyboardLock::~KeyboardLock() = default;
ScriptPromise KeyboardLock::lock(ScriptState* state,
const Vector<String>& keycodes) {
DCHECK(state);
if (!IsLocalFrameAttached()) {
return ScriptPromise::RejectWithDOMException(
state, DOMException::Create(DOMExceptionCode::kInvalidStateError,
kKeyboardLockFrameDetachedErrorMsg));
}
if (!CalledFromSupportedContext(ExecutionContext::From(state))) {
return ScriptPromise::RejectWithDOMException(
state, DOMException::Create(DOMExceptionCode::kInvalidStateError,
kKeyboardLockChildFrameErrorMsg));
}
if (!EnsureServiceConnected()) {
return ScriptPromise::RejectWithDOMException(
state, DOMException::Create(DOMExceptionCode::kInvalidStateError,
kKeyboardLockRequestFailedErrorMsg));
}
request_keylock_resolver_ = ScriptPromiseResolver::Create(state);
service_->RequestKeyboardLock(
keycodes,
WTF::Bind(&KeyboardLock::LockRequestFinished, WrapPersistent(this),
WrapPersistent(request_keylock_resolver_.Get())));
return request_keylock_resolver_->Promise();
}
void KeyboardLock::unlock(ScriptState* state) {
DCHECK(state);
if (!CalledFromSupportedContext(ExecutionContext::From(state)))
return;
if (!EnsureServiceConnected())
return;
service_->CancelKeyboardLock();
}
bool KeyboardLock::IsLocalFrameAttached() {
if (GetFrame())
return true;
return false;
}
bool KeyboardLock::EnsureServiceConnected() {
if (!service_) {
LocalFrame* frame = GetFrame();
if (!frame) {
return false;
}
frame->GetInterfaceProvider().GetInterface(mojo::MakeRequest(&service_));
DCHECK(service_);
}
return true;
}
bool KeyboardLock::CalledFromSupportedContext(ExecutionContext* context) {
DCHECK(context);
// This API is only accessible from a top level, secure browsing context.
LocalFrame* frame = GetFrame();
return frame && frame->IsMainFrame() && context->IsSecureContext();
}
void KeyboardLock::LockRequestFinished(
ScriptPromiseResolver* resolver,
mojom::KeyboardLockRequestResult result) {
DCHECK(request_keylock_resolver_);
// If |resolver| is not the current promise, then reject the promise.
if (resolver != request_keylock_resolver_) {
resolver->Reject(DOMException::Create(
DOMExceptionCode::kAbortError, kKeyboardLockPromisePreemptedErrorMsg));
return;
}
switch (result) {
case mojom::KeyboardLockRequestResult::kSuccess:
request_keylock_resolver_->Resolve();
break;
case mojom::KeyboardLockRequestResult::kFrameDetachedError:
request_keylock_resolver_->Reject(
DOMException::Create(DOMExceptionCode::kInvalidStateError,
kKeyboardLockFrameDetachedErrorMsg));
break;
case mojom::KeyboardLockRequestResult::kNoValidKeyCodesError:
request_keylock_resolver_->Reject(
DOMException::Create(DOMExceptionCode::kInvalidAccessError,
kKeyboardLockNoValidKeyCodesErrorMsg));
break;
case mojom::KeyboardLockRequestResult::kChildFrameError:
request_keylock_resolver_->Reject(
DOMException::Create(DOMExceptionCode::kInvalidStateError,
kKeyboardLockChildFrameErrorMsg));
break;
case mojom::KeyboardLockRequestResult::kRequestFailedError:
request_keylock_resolver_->Reject(
DOMException::Create(DOMExceptionCode::kInvalidStateError,
kKeyboardLockRequestFailedErrorMsg));
break;
}
request_keylock_resolver_ = nullptr;
}
void KeyboardLock::Trace(blink::Visitor* visitor) {
visitor->Trace(request_keylock_resolver_);
ContextLifecycleObserver::Trace(visitor);
}
} // namespace blink
|
