Home | History | Annotate | Download | only in webmidi 
      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef MIDIAccessPromise_h
     32 #define MIDIAccessPromise_h
     33 
     34 #include "bindings/v8/ScriptWrappable.h"
     35 #include "core/dom/ActiveDOMObject.h"
     36 #include "modules/webmidi/MIDIOptions.h"
     37 #include "wtf/OwnPtr.h"
     38 #include "wtf/PassRefPtr.h"
     39 #include "wtf/RefCounted.h"
     40 
     41 namespace WebCore {
     42 
     43 class DOMError;
     44 class MIDIAccess;
     45 class MIDIErrorCallback;
     46 class MIDISuccessCallback;
     47 class ScriptExecutionContext;
     48 
     49 struct MIDIOptions;
     50 
     51 class MIDIAccessPromise : public RefCounted<MIDIAccessPromise>, public ScriptWrappable, public ActiveDOMObject {
     52 public:
     53     static PassRefPtr<MIDIAccessPromise> create(ScriptExecutionContext*, const Dictionary&);
     54     virtual ~MIDIAccessPromise();
     55 
     56     void then(PassRefPtr<MIDISuccessCallback>, PassRefPtr<MIDIErrorCallback>);
     57 
     58     // ActiveDOMObject
     59     virtual bool canSuspend() const OVERRIDE { return true; }
     60 
     61     MIDIOptions* options() { return m_options.get(); }
     62 
     63     void fulfill();
     64     void reject(PassRefPtr<DOMError>);
     65 
     66 private:
     67     enum State {
     68         Pending,
     69         Accepted,
     70         Rejected,
     71         Invoked,
     72     };
     73 
     74     MIDIAccessPromise(ScriptExecutionContext*, const Dictionary&);
     75 
     76     State m_state;
     77     RefPtr<MIDISuccessCallback> m_successCallback;
     78     RefPtr<MIDIErrorCallback> m_errorCallback;
     79     OwnPtr<MIDIOptions> m_options;
     80     RefPtr<DOMError> m_error;
     81     RefPtr<MIDIAccess> m_access;
     82 };
     83 
     84 } // namespace WebCore
     85 
     86 #endif // MIDIAccessPromise_h
     87