It is time.

ui/views/controls/table/table_header.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_VIEWS_CONTROLS_TABLE_TABLE_HEADER_H_
-#define UI_VIEWS_CONTROLS_TABLE_TABLE_HEADER_H_
-
-#include "ui/gfx/font_list.h"
-#include "ui/views/view.h"
-#include "ui/views/views_export.h"
-
-namespace views {
-
-class TableView;
-
-// Views used to render the header for the table.
-class VIEWS_EXPORT TableHeader : public views::View {
- public:
-  // Amount the text is padded on the left/right side.
-  static const int kHorizontalPadding;
-
-  // Amount of space reserved for the indicator and padding.
-  static const int kSortIndicatorWidth;
-
-  explicit TableHeader(TableView* table);
-  virtual ~TableHeader();
-
-  const gfx::FontList& font_list() const { return font_list_; }
-
-  // views::View overrides.
-  virtual void Layout() override;
-  virtual void OnPaint(gfx::Canvas* canvas) override;
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual gfx::NativeCursor GetCursor(const ui::MouseEvent& event) override;
-  virtual bool OnMousePressed(const ui::MouseEvent& event) override;
-  virtual bool OnMouseDragged(const ui::MouseEvent& event) override;
-  virtual void OnMouseReleased(const ui::MouseEvent& event) override;
-  virtual void OnMouseCaptureLost() override;
-  virtual void OnGestureEvent(ui::GestureEvent* event) override;
-
- private:
-  // Used to track the column being resized.
-  struct ColumnResizeDetails {
-    ColumnResizeDetails() : column_index(0), initial_x(0), initial_width(0) {}
-
-    // Index into table_->visible_columns() that is being resized.
-    int column_index;
-
-    // X-coordinate of the mouse at the time the resize started.
-    int initial_x;
-
-    // Width of the column when the drag started.
-    int initial_width;
-  };
-
-  // If not already resizing and |event| is over a resizable column starts
-  // resizing.
-  bool StartResize(const ui::LocatedEvent& event);
-
-  // Continues a resize operation. Does nothing if not in the process of
-  // resizing.
-  void ContinueResize(const ui::LocatedEvent& event);
-
-  // Toggles the sort order of the column at the location in |event|.
-  void ToggleSortOrder(const ui::LocatedEvent& event);
-
-  // Returns the column to resize given the specified x-coordinate, or -1 if |x|
-  // is not in the resize range of any columns.
-  int GetResizeColumn(int x) const;
-
-  bool is_resizing() const { return resize_details_.get() != NULL; }
-
-  const gfx::FontList font_list_;
-
-  TableView* table_;
-
-  // If non-null a resize is in progress.
-  scoped_ptr<ColumnResizeDetails> resize_details_;
-
-  DISALLOW_COPY_AND_ASSIGN(TableHeader);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_CONTROLS_TABLE_TABLE_HEADER_H_