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
|
// Copyright 2013 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.
#ifndef CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_
#define CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_
#include "base/memory/scoped_ptr.h"
#include "components/browser_context_keyed_service/browser_context_keyed_service.h"
#include "content/public/browser/browser_context.h"
class GURL;
class PermissionQueueController;
class PermissionRequestID;
class Profile;
// This class manages MIDI permissions flow. Used on the UI thread.
class ChromeMIDIPermissionContext : public BrowserContextKeyedService {
public:
explicit ChromeMIDIPermissionContext(Profile* profile);
virtual ~ChromeMIDIPermissionContext();
// BrowserContextKeyedService methods:
virtual void Shutdown() OVERRIDE;
// Request to ask users permission about MIDI.
void RequestMIDISysExPermission(
int render_process_id,
int render_view_id,
int bridge_id,
const GURL& requesting_frame,
const content::BrowserContext::MIDISysExPermissionCallback& callback);
// Cancel a pending MIDI permission request.
void CancelMIDISysExPermissionRequest(int render_process_id,
int render_view_id,
int bridge_id,
const GURL& requesting_frame);
private:
// Decide whether the permission should be granted.
// Calls PermissionDecided if permission can be decided non-interactively,
// or NotifyPermissionSet if permission decided by presenting an infobar.
void DecidePermission(
const PermissionRequestID& id,
const GURL& requesting_frame,
const GURL& embedder,
const content::BrowserContext::MIDISysExPermissionCallback& callback);
// Called when permission is granted without interactively asking the user.
void PermissionDecided(
const PermissionRequestID& id,
const GURL& requesting_frame,
const GURL& embedder,
const content::BrowserContext::MIDISysExPermissionCallback& callback,
bool allowed);
// Called when the permission decision is made. It may be by the
// InfoBarDelegate to notify permission has been set.
void NotifyPermissionSet(
const PermissionRequestID& id,
const GURL& requesting_frame,
const content::BrowserContext::MIDISysExPermissionCallback& callback,
bool allowed);
// Return an instance of the infobar queue controller, creating it if needed.
PermissionQueueController* GetQueueController();
// Removes any pending InfoBar request.
void CancelPendingInfobarRequest(const PermissionRequestID& id);
Profile* const profile_;
bool shutting_down_;
scoped_ptr<PermissionQueueController> permission_queue_controller_;
DISALLOW_COPY_AND_ASSIGN(ChromeMIDIPermissionContext);
};
#endif // CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_
|
