Selection Action mode triggered like a context menu

third_party/WebKit/Source/core/events/MouseEvent.h

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 29 matching lines @@
  public:
   enum SyntheticEventType {
     // Real mouse input events or synthetic events that behave just like real
     // events
     kRealOrIndistinguishable,
     // Synthetic mouse events derived from touch input
     kFromTouch,
     // Synthetic mouse events generated without a position, for example those
     // generated from keyboard input.
     kPositionless,
+    // Synthetic mouse event derived from Select All (used for context menu).
+    kFromSelectAll,
   };
 
   static MouseEvent* Create() { return new MouseEvent; }
 
   static MouseEvent* Create(const AtomicString& event_type,
                             AbstractView*,
                             const WebMouseEvent&,
                             int detail,
                             const String& canvas_region_id,
                             Node* related_target);
@@ skipping 43 matching lines @@
   }
   const String& region() const { return region_; }
 
   Node* toElement() const;
   Node* fromElement() const;
 
   virtual DataTransfer* getDataTransfer() const { return nullptr; }
 
   bool FromTouch() const { return synthetic_event_type_ == kFromTouch; }
 
+  bool FromSelectAll() const { return synthetic_event_type_ == kFromSelectAll; }
+
   const AtomicString& InterfaceName() const override;
 
   bool IsMouseEvent() const override;
   int which() const final;
 
   EventDispatchMediator* CreateMediator() override;
 
   int ClickCount() { return detail(); }
 
   const WebMouseEvent* NativeEvent() const { return native_event_.get(); }
@@ skipping 148 matching lines @@
   MouseEvent& Event() const;
 
   DispatchEventResult DispatchEvent(EventDispatcher&) const override;
 };
 
 DEFINE_EVENT_TYPE_CASTS(MouseEvent);
 
 }  // namespace blink
 
 #endif  // MouseEvent_h