// 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 CONTENT_RENDERER_MEDIA_MIDI_DISPATCHER_H_ #define CONTENT_RENDERER_MEDIA_MIDI_DISPATCHER_H_ #include "base/id_map.h" #include "content/public/renderer/render_frame_observer.h" #include "third_party/WebKit/public/web/WebMIDIClient.h" namespace blink { class WebMIDIPermissionRequest; } namespace content { // MidiDispatcher implements WebMIDIClient to handle permissions for using // system exclusive messages. // It works as RenderFrameObserver to handle IPC messages between // MidiDispatcherHost owned by WebContents since permissions are managed in // the browser process. class MidiDispatcher : public RenderFrameObserver, public blink::WebMIDIClient { public: explicit MidiDispatcher(RenderFrame* render_frame); virtual ~MidiDispatcher(); private: // RenderFrameObserver implementation. virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; // blink::WebMIDIClient implementation. virtual void requestSysexPermission( const blink::WebMIDIPermissionRequest& request); virtual void cancelSysexPermissionRequest( const blink::WebMIDIPermissionRequest& request); // Permission for using system exclusive messages has been set. void OnSysExPermissionApproved(int client_id, bool is_allowed); // Each WebMIDIPermissionRequest object is valid until // cancelSysexPermissionRequest() is called with the object, or used to call // WebMIDIPermissionRequest::setIsAllowed(). typedef IDMap<blink::WebMIDIPermissionRequest, IDMapOwnPointer> Requests; Requests requests_; DISALLOW_COPY_AND_ASSIGN(MidiDispatcher); }; } // namespace content #endif // CONTENT_RENDERER_MEDIA_MIDI_DISPATCHER_H_