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// 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/containers/scoped_ptr_hash_map.h"
#include "base/memory/scoped_ptr.h"
#include "components/keyed_service/core/keyed_service.h"
#include "content/public/browser/browser_context.h"
namespace content {
class WebContents;
}
class GURL;
class MidiPermissionRequest;
class PermissionQueueController;
class PermissionRequestID;
class Profile;
// This class manages MIDI permissions flow. Used on the UI thread.
class ChromeMidiPermissionContext : public KeyedService {
public:
explicit ChromeMidiPermissionContext(Profile* profile);
virtual ~ChromeMidiPermissionContext();
// KeyedService 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,
bool user_gesture,
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);
// Called when the permission decision is made. If a permissions prompt is
// shown to the user it will be called when the user selects an option
// from that prompt.
void NotifyPermissionSet(
const PermissionRequestID& id,
const GURL& requesting_frame,
const content::BrowserContext::MidiSysExPermissionCallback& callback,
bool allowed);
private:
friend class MidiPermissionRequest;
// 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(
content::WebContents* web_contents,
const PermissionRequestID& id,
const GURL& requesting_frame,
const GURL& embedder,
bool user_gesture,
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);
// Return an instance of the infobar queue controller, creating it if needed.
PermissionQueueController* GetQueueController();
// Removes any pending InfoBar request.
void CancelPendingInfobarRequest(const PermissionRequestID& id);
// Notify the context that a particular request object is no longer needed.
void RequestFinished(MidiPermissionRequest* request);
Profile* const profile_;
bool shutting_down_;
scoped_ptr<PermissionQueueController> permission_queue_controller_;
base::ScopedPtrHashMap<std::string, MidiPermissionRequest> pending_requests_;
DISALLOW_COPY_AND_ASSIGN(ChromeMidiPermissionContext);
};
#endif // CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_
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