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      1 // Copyright 2013 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 "content/browser/renderer_host/media/midi_dispatcher_host.h"
      6 
      7 #include "base/bind.h"
      8 #include "content/browser/renderer_host/render_view_host_impl.h"
      9 #include "content/common/media/midi_messages.h"
     10 #include "content/public/browser/browser_context.h"
     11 #include "content/public/browser/browser_thread.h"
     12 #include "url/gurl.h"
     13 
     14 namespace content {
     15 
     16 MIDIDispatcherHost::MIDIDispatcherHost(int render_process_id,
     17                                        BrowserContext* browser_context)
     18     : render_process_id_(render_process_id),
     19       browser_context_(browser_context) {
     20 }
     21 
     22 MIDIDispatcherHost::~MIDIDispatcherHost() {
     23 }
     24 
     25 bool MIDIDispatcherHost::OnMessageReceived(const IPC::Message& message,
     26                                            bool* message_was_ok) {
     27   bool handled = true;
     28   IPC_BEGIN_MESSAGE_MAP_EX(MIDIDispatcherHost, message, *message_was_ok)
     29     IPC_MESSAGE_HANDLER(MIDIHostMsg_RequestSysExPermission,
     30                         OnRequestSysExPermission)
     31     IPC_MESSAGE_UNHANDLED(handled = false)
     32   IPC_END_MESSAGE_MAP_EX()
     33   return handled;
     34 }
     35 
     36 void MIDIDispatcherHost::OverrideThreadForMessage(
     37     const IPC::Message& message, BrowserThread::ID* thread) {
     38   if (message.type() == MIDIHostMsg_RequestSysExPermission::ID)
     39     *thread = BrowserThread::UI;
     40 }
     41 
     42 void MIDIDispatcherHost::OnRequestSysExPermission(int render_view_id,
     43                                                   int client_id,
     44                                                   const GURL& origin) {
     45   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     46 
     47   browser_context_->RequestMIDISysExPermission(
     48       render_process_id_,
     49       render_view_id,
     50       origin,
     51       base::Bind(&MIDIDispatcherHost::WasSysExPermissionGranted,
     52                  base::Unretained(this),
     53                  render_view_id,
     54                  client_id));
     55 }
     56 
     57 void MIDIDispatcherHost::WasSysExPermissionGranted(int render_view_id,
     58                                                    int client_id,
     59                                                    bool success) {
     60   Send(new MIDIMsg_SysExPermissionApproved(render_view_id, client_id, success));
     61 }
     62 
     63 }  // namespace content
     64