Index: third_party/WebKit/Source/core/events/EventDispatchResult.h |
diff --git a/third_party/WebKit/Source/core/events/EventDispatchResult.h b/third_party/WebKit/Source/core/events/EventDispatchResult.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..a79e0343ccbc82eeb4f21314bbf0440693bb87af |
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+++ b/third_party/WebKit/Source/core/events/EventDispatchResult.h |
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+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef EventDispatchResult_h |
+#define EventDispatchResult_h |
+ |
+namespace blink { |
+ |
+enum class DispatchEventResult { |
+ // Event was not canceled by event handler or default event handler. |
+ NotCanceled, |
+ // Event was canceled by event handler; i.e. a script handler calling preventDefault. |
+ CanceledByEventHandler, |
+ // Event was canceled by the default event handler; i.e. executing the default action. |
+ // This result should be used sparingly as it deviates from the DOM Event Dispatch |
+ // model. Default event handlers really shouldn't be invoked inside of dispatch. |
+ CanceledByDefaultEventHandler, |
+ // Event was canceled but suppressed before dispatched to event handler. |
+ // This result should be used sparingly; and its usage likely indicates |
+ // there is potential for a bug. Trusted events may return this code; but untrusted |
+ // events likely should always execute the event handler the developer intends to |
+ // execute. |
+ CanceledBeforeDispatch, |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // EventDispatchResult_h |