Limit display of the virtual keyboard to state changes triggered from a user gesture.

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 136 matching lines @@
   virtual TextInputMode GetTextInputMode() 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;
 
+  // Displays an on screen keyboard if enabled.
+  virtual void ShowImeIfNeeded() = 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_