SearchBoxView now enables/disables cursor based on user interaction.

ui/app_list/views/search_box_view.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_APP_LIST_VIEWS_SEARCH_BOX_VIEW_H_
 #define UI_APP_LIST_VIEWS_SEARCH_BOX_VIEW_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 63 matching lines @@
 
   // Moves focus forward/backwards in response to TAB.
   bool MoveTabFocus(bool move_backwards);
 
   // Moves focus to contents or SearchBox and unselects buttons.
   void ResetTabFocus(bool on_contents);
 
   // Sets voice label for Back button depending on whether a folder is open.
   void SetBackButtonLabel(bool folder);
 
+  // Whether the search box is active.
+  bool is_search_box_active() const { return is_search_box_active_; }
+
+  // Setting the search  box active left aligns the placeholder text, changes

[xiyuan, 2017/06/27 23:11:10]

nit: get rid of one space between "search" and "box".

[newcomer, 2017/06/30 21:47:23]

Done.

+  // the color of the placeholder text, and enables cursor blink. Setting the
+  // search box inactive center aligns the placeholder text, sets the color, and
+  // disables cursor blink.
+  void SetSearchBoxActive(bool active);
+
+  // Closes the |app_list_view_| if the search box gets unfocused.
+  void HandleSearchBoxEvent(ui::LocatedEvent* located_event,
+                            ui::EventType type);
+
+  // Handles Gesture and Mouse Events sent from |search_box_|.
+  bool OnTextfieldEvent();
+
   // Overridden from views::View:
   bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
   void OnEnabledChanged() override;
   const char* GetClassName() const override;
+  void OnGestureEvent(ui::GestureEvent* event) override;
+  void OnMouseEvent(ui::MouseEvent* event) override;
 
  private:
   // Updates model text and selection model with current Textfield info.
   void UpdateModel();
 
   // Fires query change notification.
   void NotifyQueryChanged();
 
   // Overridden from views::TextfieldController:
   void ContentsChanged(views::Textfield* sender,
                        const base::string16& new_contents) override;
   bool HandleKeyEvent(views::Textfield* sender,
                       const ui::KeyEvent& key_event) override;
+  bool HandleMouseEvent(views::Textfield* sender,
+                        const ui::MouseEvent& mouse_event) override;
+  bool HandleGestureEvent(views::Textfield* sender,
+                          const ui::GestureEvent& gesture_event) override;
 
   // Overridden from views::ButtonListener:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
 
   // Overridden from SearchBoxModelObserver:
   void SpeechRecognitionButtonPropChanged() override;
   void HintTextChanged() override;
   void SelectionModelChanged() override;
   void Update() override;
 
@@ skipping 10 matching lines @@
   SearchBoxImageButton* back_button_;    // Owned by views hierarchy.
   SearchBoxImageButton* speech_button_;  // Owned by views hierarchy.
   views::Textfield* search_box_;  // Owned by views hierarchy.
   views::View* contents_view_;  // Owned by views hierarchy.
   app_list::AppListView* app_list_view_;  // Owned by views hierarchy.
 
   SearchBoxFocus focused_view_;  // Which element has TAB'd focus.
 
   // Whether the fullscreen app list feature is enabled.
   const bool is_fullscreen_app_list_enabled_;
+  // Whether the search box is active.
+  bool is_search_box_active_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(SearchBoxView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_SEARCH_BOX_VIEW_H_