Add inputmode support to content editable.

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

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 120 matching lines @@
       // See TextEvent.idl.
       frame.eventHandler().handleTextInputEvent(text, 0,
                                                 TextEventInputComposition);
       break;
     default:
       NOTREACHED();
   }
   // TODO(chongz): Fire 'input' event.
 }
 
+AtomicString getInputModeAttribute(Element* element) {
+  if (!element)
+    return AtomicString();
+
+  bool queryAttribute = false;
+  if (isHTMLInputElement(*element)) {
+    queryAttribute = toHTMLInputElement(*element).supportsInputModeAttribute();
+  } else if (isHTMLTextAreaElement(*element)) {
+    queryAttribute = true;
+  } else {
+    element->document().updateStyleAndLayoutTree();
+    if (hasEditableStyle(*element))
+      queryAttribute = true;
+  }
+
+  if (!queryAttribute)
+    return AtomicString();
+
+  // TODO(dtapuska): We may wish to restrict this to a yet to be proposed
+  // <contenteditable> or <richtext> element Mozilla discussed at TPAC 2016.
+  return element->fastGetAttribute(HTMLNames::inputmodeAttr).lower();
+}
+
 }  // anonymous namespace
 
 InputMethodController* InputMethodController::create(LocalFrame& frame) {
   return new InputMethodController(frame);
 }
 
 InputMethodController::InputMethodController(LocalFrame& frame)
     : m_frame(&frame), m_isDirty(false), m_hasComposition(false) {}
 
 bool InputMethodController::hasComposition() const {
@@ skipping 890 matching lines @@
     }
   }
 
   return flags;
 }
 
 WebTextInputMode InputMethodController::inputModeOfFocusedElement() const {
   if (!RuntimeEnabledFeatures::inputModeAttributeEnabled())
     return kWebTextInputModeDefault;
 
-  Element* element = frame().document()->focusedElement();
-  if (!element)
-    return kWebTextInputModeDefault;
-
-  AtomicString mode;
-  if (isHTMLInputElement(*element)) {
-    const HTMLInputElement& input = toHTMLInputElement(*element);
-    if (input.supportsInputModeAttribute())
-      mode = input.fastGetAttribute(HTMLNames::inputmodeAttr).lower();
-  }
-  if (isHTMLTextAreaElement(*element)) {
-    const HTMLTextAreaElement& textarea = toHTMLTextAreaElement(*element);
-    mode = textarea.fastGetAttribute(HTMLNames::inputmodeAttr).lower();
-  }
+  AtomicString mode =
+      getInputModeAttribute(frame().document()->focusedElement());
 
   if (mode.isEmpty())
     return kWebTextInputModeDefault;
   if (mode == InputModeNames::verbatim)
     return kWebTextInputModeVerbatim;
   if (mode == InputModeNames::latin)
     return kWebTextInputModeLatin;
   if (mode == InputModeNames::latin_name)
     return kWebTextInputModeLatinName;
   if (mode == InputModeNames::latin_prose)
@@ skipping 79 matching lines @@
 
   return WebTextInputTypeNone;
 }
 
 DEFINE_TRACE(InputMethodController) {
   visitor->trace(m_frame);
   visitor->trace(m_compositionRange);
 }
 
 }  // namespace blink