[InputEvent] Fire 'beforeinput' during typing, pressing hot keys and IME composition

third_party/WebKit/Source/core/editing/EditingUtilities.h

 /*
  * Copyright (C) 2004, 2006, 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 15 matching lines @@
 #ifndef EditingUtilities_h
 #define EditingUtilities_h
 
 #include "core/CoreExport.h"
 #include "core/editing/EditingBoundary.h"
 #include "core/editing/EphemeralRange.h"
 #include "core/editing/Position.h"
 #include "core/editing/PositionWithAffinity.h"
 #include "core/editing/VisiblePosition.h"
 #include "core/editing/VisibleSelection.h"
+#include "core/events/InputEvent.h"
 #include "platform/text/TextDirection.h"
 #include "wtf/Forward.h"
 #include "wtf/text/CharacterNames.h"
 
 namespace blink {
 
 enum class PositionMoveType {
     // Move by a single code unit. |PositionMoveType::CodeUnit| is used for
     // implementing other |PositionMoveType|. You should not use this.
     CodeUnit,
@@ skipping 293 matching lines @@
 {
     // These are characters that can behave as word boundaries, but can appear within words.
     // If they are just typed, i.e. if they are immediately followed by a caret, we want to delay text checking until the next character has been typed.
     // FIXME: this is required until 6853027 is fixed and text checking can do this for us.
     return character == '\'' || character == rightSingleQuotationMarkCharacter || character == hebrewPunctuationGershayimCharacter;
 }
 
 String stringWithRebalancedWhitespace(const String&, bool startIsStartOfParagraph, bool endIsEndOfParagraph);
 const String& nonBreakingSpaceString();
 
+// -------------------------------------------------------------------------
+// Events
+// -------------------------------------------------------------------------
+
+// Functions dispatch InputEvent
+DispatchEventResult dispatchBeforeInputInsertText(EventTarget*, const String& data);
+DispatchEventResult dispatchBeforeInputFromComposition(EventTarget*, InputEvent::InputType, const String& data);
+DispatchEventResult dispatchBeforeInputEditorCommand(EventTarget*, InputEvent::InputType, const String& data = "");
+
 } // namespace blink
 
 #endif