text: /*
   * Copyright (C) 2013 Google Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   *     * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above
   * copyright notice, this list of conditions and the following disclaimer
   * in the documentation and/or other materials provided with the
   * distribution.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "modules/webmidi/NavigatorWebMIDI.h"
  
  #include "bindings/core/v8/ScriptPromise.h"
  #include "bindings/core/v8/ScriptPromiseResolver.h"
  #include "core/dom/DOMException.h"
  #include "core/dom/Document.h"
  #include "core/frame/LocalFrame.h"
  #include "core/frame/Navigator.h"
  #include "core/frame/UseCounter.h"
  #include "modules/webmidi/MIDIAccessInitializer.h"
  #include "modules/webmidi/MIDIOptions.h"
  
  namespace blink {
  
  NavigatorWebMIDI::NavigatorWebMIDI(LocalFrame* frame)
      : DOMWindowProperty(frame)
  {
  }
  
  DEFINE_TRACE(NavigatorWebMIDI)
  {
      Supplement<Navigator>::trace(visitor);
      DOMWindowProperty::trace(visitor);
  }
  
  const char* NavigatorWebMIDI::supplementName()
  {
      return "NavigatorWebMIDI";
  }
  
  NavigatorWebMIDI& NavigatorWebMIDI::from(Navigator& navigator)
  {
      NavigatorWebMIDI* supplement = static_cast<NavigatorWebMIDI*>(Supplement<Navigator>::from(navigator, supplementName()));
      if (!supplement) {
          supplement = new NavigatorWebMIDI(navigator.frame());
          provideTo(navigator, supplementName(), supplement);
      }
      return *supplement;
  }
  
  ScriptPromise NavigatorWebMIDI::requestMIDIAccess(ScriptState* scriptState, Navigator& navigator, const MIDIOptions& options)
  {
      return NavigatorWebMIDI::from(navigator).requestMIDIAccess(scriptState, options);
  }
  
  ScriptPromise NavigatorWebMIDI::requestMIDIAccess(ScriptState* scriptState, const MIDIOptions& options)
  {
      if (!frame() || frame()->document()->activeDOMObjectsAreStopped()) {
          return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(AbortError, "The frame is not working."));
      }
  
      UseCounter::countCrossOriginIframe(*frame()->document(), UseCounter::RequestMIDIAccessIframe);
      return MIDIAccessInitializer::start(scriptState, options);
  }
  
  } // namespace blink
  