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 4847c7481d3a927053e4d921037241839ec101b5..e177f05808139c6d1c692380fcc5d09fa1dd8493
--- 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 IsCandidatePopupOpen() const OVERRIDE;
 
   // Overridden from InputMethodBase:
   virtual void OnWillChangeFocusedClient(TextInputClient* focused_before,
@@ -36,6 +37,11 @@ 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();
 
@@ -43,6 +49,9 @@ class UI_EXPORT InputMethodTSF : public InputMethodWin {
   // focus.
   bool IsWindowFocused(const TextInputClient* client) const;
 
+  // True if we know for sure that a candidate window is open.
+  bool is_candidate_popup_open_;
+
   DISALLOW_COPY_AND_ASSIGN(InputMethodTSF);
 };