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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 CONTENT_RENDERER_MEDIA_MIDI_DISPATCHER_H_
#define CONTENT_RENDERER_MEDIA_MIDI_DISPATCHER_H_
#include "base/id_map.h"
#include "content/public/renderer/render_view_observer.h"
#include "third_party/WebKit/public/web/WebMIDIClient.h"
namespace blink {
class WebMIDIPermissionRequest;
}
namespace content {
class RenderViewImpl;
// MidiDispatcher implements WebMIDIClient to handle permissions for using
// system exclusive messages.
// It works as RenderViewObserver to handle IPC messages between
// MidiDispatcherHost owned by RenderViewHost since permissions are managed in
// the browser process.
class MidiDispatcher : public RenderViewObserver,
public blink::WebMIDIClient {
public:
explicit MidiDispatcher(RenderViewImpl* render_view);
virtual ~MidiDispatcher();
private:
// RenderView::Observer 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().
IDMap<blink::WebMIDIPermissionRequest> requests_;
DISALLOW_COPY_AND_ASSIGN(MidiDispatcher);
};
} // namespace content
#endif // CONTENT_RENDERER_MEDIA_MIDI_DISPATCHER_H_
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