New method: InputMethod::IsCandidatePopupOpen()

ui/base/ime/input_method.h

 // Copyright (c) 2012 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 UI_BASE_IME_INPUT_METHOD_H_
 #define UI_BASE_IME_INPUT_METHOD_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 129 matching lines @@
   // is not active.
   virtual bool IsActive() = 0;
 
   // Gets the text input type of the focused text input client. Returns
   // ui::TEXT_INPUT_TYPE_NONE if there is no focused client.
   virtual TextInputType GetTextInputType() const = 0;
 
   // Checks if the focused text input client supports inline composition.
   virtual bool CanComposeInline() const = 0;
 
+  // Returns true if we know for sure that a candidate window (or IME suggest,
+  // etc.) is open.  Returns false if no popup window is open or the detection
+  // of IME popups is not supported.
+  virtual bool IsCandidatePopupOpen() const = 0;
+
   // Management of the observer list.
   virtual void AddObserver(InputMethodObserver* observer) = 0;
   virtual void RemoveObserver(InputMethodObserver* observer) = 0;
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_INPUT_METHOD_H_