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 ExecutionContext; 48 49 struct MIDIOptions; 50 51 class MIDIAccessPromise : public RefCounted<MIDIAccessPromise>, public ScriptWrappable, public ActiveDOMObject { 52 public: 53 static PassRefPtr<MIDIAccessPromise> create(ExecutionContext*, const Dictionary&); 54 virtual ~MIDIAccessPromise(); 55 56 // ActiveDOMObject 57 virtual bool hasPendingActivity() const OVERRIDE; 58 virtual void stop() OVERRIDE; 59 options()60 MIDIOptions* options() { return m_options.get(); } 61 62 void fulfill(); 63 void reject(PassRefPtr<DOMError>); 64 65 void then(PassOwnPtr<MIDISuccessCallback>, PassOwnPtr<MIDIErrorCallback>); 66 67 private: 68 enum State { 69 Pending, 70 Accepted, 71 Rejected, 72 Invoked, 73 }; 74 75 MIDIAccessPromise(ExecutionContext*, const Dictionary&); 76 77 void clear(); 78 79 State m_state; 80 OwnPtr<MIDISuccessCallback> m_successCallback; 81 OwnPtr<MIDIErrorCallback> m_errorCallback; 82 OwnPtr<MIDIOptions> m_options; 83 RefPtr<DOMError> m_error; 84 RefPtr<MIDIAccess> m_access; 85 }; 86 87 } // namespace WebCore 88 89 #endif // MIDIAccessPromise_h 90