New method: InputMethod::IsCandidatePopupOpen()

ui/base/ime/input_method_tsf.h

Index: ui/base/ime/input_method_tsf.h
diff --git a/ui/base/ime/input_method_tsf.h b/ui/base/ime/input_method_tsf.h
old mode 100644
new mode 100755
index 8935f4440e5a6e55ad627a7f7c55a961e2caff65..2b71f12172700ab63b3ecdd92959b7b46a564496
--- a/ui/base/ime/input_method_tsf.h
+++ b/ui/base/ime/input_method_tsf.h
@@ -28,6 +28,7 @@ class UI_EXPORT InputMethodTSF : public InputMethodWin {
   virtual void OnCaretBoundsChanged(const TextInputClient* client) OVERRIDE;
   virtual void CancelComposition(const TextInputClient* client) OVERRIDE;
   virtual void SetFocusedTextInputClient(TextInputClient* client) OVERRIDE;
+  virtual bool IsPopupOpen() const OVERRIDE;
 
   // Overridden from InputMethodBase:
   virtual void OnWillChangeFocusedClient(TextInputClient* focused_before,
@@ -36,9 +37,18 @@ class UI_EXPORT InputMethodTSF : public InputMethodWin {
                                         TextInputClient* focused) OVERRIDE;
 
  private:
+  LRESULT OnImeNotify(UINT message,
+                      WPARAM wparam,
+                      LPARAM lparam,
+                      BOOL* handled);
+
   // Asks the client to confirm current composition text.
   void ConfirmCompositionText();
 
+  // True if a candidate window (or IME suggest, etc.) is open.
+  // False if not or unsure.
+  bool is_popup_open_;
+
   DISALLOW_COPY_AND_ASSIGN(InputMethodTSF);
 };