Index: Source/modules/webmidi/MIDIAccessPromise.cpp |
diff --git a/Source/modules/webmidi/MIDIAccessPromise.cpp b/Source/modules/webmidi/MIDIAccessPromise.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..bf3afeebf7e766bd285f3f1c907e1e0ea27898b9 |
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+++ b/Source/modules/webmidi/MIDIAccessPromise.cpp |
@@ -0,0 +1,118 @@ |
+/* |
+ * 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 "config.h" |
+#include "modules/webmidi/MIDIAccessPromise.h" |
+ |
+#include "core/dom/DOMError.h" |
+#include "modules/webmidi/MIDIAccess.h" |
+#include "modules/webmidi/MIDIErrorCallback.h" |
+#include "modules/webmidi/MIDISuccessCallback.h" |
+ |
+namespace WebCore { |
+ |
+PassRefPtr<MIDIAccessPromise> MIDIAccessPromise::create(ScriptExecutionContext* context, const Dictionary& options) |
+{ |
+ RefPtr<MIDIAccessPromise> midiAccessPromise(adoptRef(new MIDIAccessPromise(context, options))); |
+ midiAccessPromise->suspendIfNeeded(); |
+ return midiAccessPromise.release(); |
+} |
+ |
+MIDIAccessPromise::MIDIAccessPromise(ScriptExecutionContext* context, const Dictionary& options) |
+ : ActiveDOMObject(context) |
+ , m_state(Pending) |
+ , m_options(adoptPtr(new MIDIOptions(options))) |
+ , m_access(MIDIAccess::create(context, this)) |
+{ |
+ ScriptWrappable::init(this); |
+ setPendingActivity(this); |
+} |
+ |
+MIDIAccessPromise::~MIDIAccessPromise() |
+{ |
+ stop(); |
+} |
+ |
+void MIDIAccessPromise::fulfill() |
+{ |
+ if (m_state == Pending) { |
+ if (m_successCallback) { |
+ m_state = Invoked; |
+ m_successCallback->handleEvent(m_access.release().leakRef(), m_options->sysexEnabled); |
+ m_options.clear(); |
+ } else { |
+ m_state = Accepted; |
+ } |
+ unsetPendingActivity(this); |
+ } |
+ m_successCallback.clear(); |
+ m_errorCallback.clear(); |
Chris Rogers
2013/06/07 19:19:46
It seems that the m_successCallback cannot be clea
Takashi Toyoshima
2013/06/10 13:56:04
When then() is called later on, |successCallback|
|
+} |
+ |
+void MIDIAccessPromise::reject(DOMError* error) |
+{ |
+ if (m_state == Pending) { |
+ if (m_errorCallback) { |
+ m_state = Invoked; |
+ m_errorCallback->handleEvent(error); |
+ } else { |
+ m_state = Rejected; |
+ m_error = adoptRef(error); |
+ } |
+ unsetPendingActivity(this); |
+ } |
+ m_successCallback.clear(); |
+ m_errorCallback.clear(); |
+} |
+ |
+void MIDIAccessPromise::then(PassRefPtr<MIDISuccessCallback> successCallback, PassRefPtr<MIDIErrorCallback> errorCallback) |
+{ |
+ switch (m_state) { |
+ case Accepted: |
+ successCallback->handleEvent(m_access.release().leakRef(), m_options->sysexEnabled); |
+ m_options.clear(); |
+ m_state = Invoked; |
+ break; |
+ case Rejected: |
+ errorCallback->handleEvent(m_error.release().leakRef()); |
+ m_state = Invoked; |
+ break; |
+ case Pending: |
+ m_successCallback = successCallback; |
+ m_errorCallback = errorCallback; |
+ break; |
+ case Invoked: |
+ break; |
+ default: |
+ ASSERT_NOT_REACHED(); |
+ } |
+} |
+ |
+} // namespace WebCore |