Web MIDI: implement MIDIAccessPromise

Source/modules/webmidi/MIDIAccessFuture.h

+/*
+ * 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.
+ */
+
+#ifndef MIDIAccessFuture_h
+#define MIDIAccessFuture_h
+
+#include "bindings/v8/ScriptWrappable.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
+
+namespace WebCore {
+
+class DOMError;
+class MIDIErrorCallback;
+class MIDISuccessCallback;
+class ScriptExecutionContext;
+
+struct MIDIOptions;
+
+class MIDIAccessFuture : public RefCounted<MIDIAccessFuture>, public ScriptWrappable {
+public:
+    static PassRefPtr<MIDIAccessFuture> create(ScriptExecutionContext*);
+    virtual ~MIDIAccessFuture() { }
+
+    void done(PassRefPtr<MIDISuccessCallback>, PassRefPtr<MIDIErrorCallback>);
+
+private:
+    enum State {
+        Pending,
+        Accepted,
+        Rejected,
+        Invoked,
+    };

[Chris Rogers, 2013/06/04 04:28:58]

nit: I'd add a blank line here

[Takashi Toyoshima, 2013/06/04 11:44:37]

Done.

+    MIDIAccessFuture(ScriptExecutionContext*);
+
+    void accept(MIDIOptions*);
+    void reject(DOMError*);
+
+    ScriptExecutionContext* m_context;
+    State m_state;
+    RefPtr<MIDISuccessCallback> m_successCallback;
+    RefPtr<MIDIErrorCallback> m_errorCallback;
+};
+
+} // namespace WebCore
+
+#endif // MIDIAccessFuture_h