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

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

Index: third_party/WebKit/Source/core/editing/EditingUtilities.cpp
diff --git a/third_party/WebKit/Source/core/editing/EditingUtilities.cpp b/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
index fed03353f55ed4fa03b8f0b67ffc02d2b62934ef..ec5d02b531d951e17b83816cc01684a65a1d86fd 100644
--- a/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
+++ b/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
@@ -41,6 +41,7 @@
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/iterators/TextIterator.h"
 #include "core/editing/serializers/HTMLInterchange.h"
+#include "core/events/InputEvent.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/UseCounter.h"
 #include "core/html/HTMLBRElement.h"
@@ -1652,4 +1653,33 @@ bool isTextSecurityNode(const Node* node)
     return node && node->layoutObject() && node->layoutObject()->style()->textSecurity() != TSNONE;
 }
 
+DispatchEventResult dispatchBeforeInputInsertText(EventTarget* target, const String& data)
+{
+    static const char* kInputTypeInsertText = "insertText";

[yosin_UTC9, 2016/03/15 08:32:32]

Could you move |kInputTypeXXX| into "InputEvent.h"?

+    return dispatchBeforeInputEditorCommand(target, kInputTypeInsertText, data);
+}
+
+DispatchEventResult dispatchBeforeInputEditorCommand(EventTarget* target, const char* commandName, const String& data)
+{
+    if (RuntimeEnabledFeatures::inputEventEnabled()) {
+        if (target) {
+            RefPtrWillBeRawPtr<InputEvent> beforeInputEvent = InputEvent::createCancelableBeforeInput(commandName, data);
+            return target->dispatchEvent(beforeInputEvent);
+        }
+    }
+    return DispatchEventResult::NotCanceled;
+}
+
+DispatchEventResult dispatchBeforeInputCompositionUpdate(EventTarget* target, const String& data)
+{
+    if (RuntimeEnabledFeatures::inputEventEnabled()) {
+        if (target) {
+            static const char* kInputTypeReplaceText = "replaceText";
+            RefPtrWillBeRawPtr<InputEvent> beforeInputEvent = InputEvent::createBeforeInput(kInputTypeReplaceText, data);

[chongz, 2016/03/04 19:46:50]

I'm not so sure about the inputType we want to use here?

+            return target->dispatchEvent(beforeInputEvent);
+        }
+    }
+    return DispatchEventResult::NotCanceled;
+}
+
 } // namespace blink