1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "config.h"
6 #include "modules/webmidi/MIDIAccessInitializer.h"
7
8 #include "bindings/core/v8/ScriptPromise.h"
9 #include "bindings/core/v8/ScriptPromiseResolver.h"
10 #include "core/dom/DOMError.h"
11 #include "core/dom/Document.h"
12 #include "core/frame/Navigator.h"
13 #include "modules/webmidi/MIDIAccess.h"
14 #include "modules/webmidi/MIDIController.h"
15 #include "modules/webmidi/MIDIOptions.h"
16 #include "modules/webmidi/MIDIPort.h"
17
18 namespace blink {
19
MIDIAccessInitializer(ScriptState * scriptState,const MIDIOptions & options)20 MIDIAccessInitializer::MIDIAccessInitializer(ScriptState* scriptState, const MIDIOptions& options)
21 : ScriptPromiseResolver(scriptState)
22 , m_requestSysex(false)
23 {
24 if (options.hasSysex())
25 m_requestSysex = options.sysex();
26 }
27
~MIDIAccessInitializer()28 MIDIAccessInitializer::~MIDIAccessInitializer()
29 {
30 // It is safe to cancel a request which is already finished or canceld.
31 Document* document = toDocument(executionContext());
32 ASSERT(document);
33 MIDIController* controller = MIDIController::from(document->frame());
34 if (controller)
35 controller->cancelSysexPermissionRequest(this);
36 }
37
start()38 ScriptPromise MIDIAccessInitializer::start()
39 {
40 ScriptPromise promise = this->promise();
41 m_accessor = MIDIAccessor::create(this);
42
43 if (!m_requestSysex) {
44 m_accessor->startSession();
45 return promise;
46 }
47 Document* document = toDocument(executionContext());
48 ASSERT(document);
49 MIDIController* controller = MIDIController::from(document->frame());
50 if (controller) {
51 controller->requestSysexPermission(this);
52 } else {
53 reject(DOMError::create("SecurityError"));
54 }
55 return promise;
56 }
57
didAddInputPort(const String & id,const String & manufacturer,const String & name,const String & version)58 void MIDIAccessInitializer::didAddInputPort(const String& id, const String& manufacturer, const String& name, const String& version)
59 {
60 ASSERT(m_accessor);
61 m_portDescriptors.append(PortDescriptor(id, manufacturer, name, MIDIPort::MIDIPortTypeInput, version));
62 }
63
didAddOutputPort(const String & id,const String & manufacturer,const String & name,const String & version)64 void MIDIAccessInitializer::didAddOutputPort(const String& id, const String& manufacturer, const String& name, const String& version)
65 {
66 ASSERT(m_accessor);
67 m_portDescriptors.append(PortDescriptor(id, manufacturer, name, MIDIPort::MIDIPortTypeOutput, version));
68 }
69
didStartSession(bool success,const String & error,const String & message)70 void MIDIAccessInitializer::didStartSession(bool success, const String& error, const String& message)
71 {
72 ASSERT(m_accessor);
73 if (success) {
74 resolve(MIDIAccess::create(m_accessor.release(), m_requestSysex, m_portDescriptors, executionContext()));
75 } else {
76 reject(DOMError::create(error, message));
77 }
78 }
79
resolveSysexPermission(bool allowed)80 void MIDIAccessInitializer::resolveSysexPermission(bool allowed)
81 {
82 if (allowed)
83 m_accessor->startSession();
84 else
85 reject(DOMError::create("SecurityError"));
86 }
87
securityOrigin() const88 SecurityOrigin* MIDIAccessInitializer::securityOrigin() const
89 {
90 return executionContext()->securityOrigin();
91 }
92
executionContext() const93 ExecutionContext* MIDIAccessInitializer::executionContext() const
94 {
95 return scriptState()->executionContext();
96 }
97
98 } // namespace blink
99