Reland: Move TouchSelectionController from content to ui

content/browser/renderer_host/input/touch_selection_controller.h

-// Copyright 2014 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 CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_H_
-#define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_H_
-
-#include "cc/output/viewport_selection_bound.h"
-#include "content/browser/renderer_host/input/selection_event_type.h"
-#include "content/browser/renderer_host/input/touch_handle.h"
-#include "content/common/content_export.h"
-#include "ui/gfx/geometry/point_f.h"
-#include "ui/gfx/geometry/rect_f.h"
-
-namespace blink {
-class WebInputEvent;
-}
-
-namespace ui {
-class MotionEvent;
-}
-
-namespace content {
-
-// Interface through which |TouchSelectionController| issues selection-related
-// commands, notifications and requests.
-class CONTENT_EXPORT TouchSelectionControllerClient {
- public:
-  virtual ~TouchSelectionControllerClient() {}
-
-  virtual bool SupportsAnimation() const = 0;
-  virtual void SetNeedsAnimate() = 0;
-  virtual void MoveCaret(const gfx::PointF& position) = 0;
-  virtual void MoveRangeSelectionExtent(const gfx::PointF& extent) = 0;
-  virtual void SelectBetweenCoordinates(const gfx::PointF& base,
-                                        const gfx::PointF& extent) = 0;
-  virtual void OnSelectionEvent(SelectionEventType event,
-                                const gfx::PointF& position) = 0;
-  virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() = 0;
-};
-
-// Controller for manipulating text selection via touch input.
-class CONTENT_EXPORT TouchSelectionController : public TouchHandleClient {
- public:
-  TouchSelectionController(TouchSelectionControllerClient* client,
-                           base::TimeDelta tap_timeout,
-                           float tap_slop);
-  ~TouchSelectionController() override;
-
-  // To be called when the selection bounds have changed.
-  // Note that such updates will trigger handle updates only if preceded
-  // by an appropriate call to allow automatic showing.
-  void OnSelectionBoundsChanged(const cc::ViewportSelectionBound& start,
-                                const cc::ViewportSelectionBound& end);
-
-  // Allows touch-dragging of the handle.
-  // Returns true iff the event was consumed, in which case the caller should
-  // cease further handling of the event.
-  bool WillHandleTouchEvent(const ui::MotionEvent& event);
-
-  // To be called before forwarding a tap event. This allows automatically
-  // showing the insertion handle from subsequent bounds changes.
-  void OnTapEvent();
-
-  // To be called before forwarding a longpress event. This allows automatically
-  // showing the selection or insertion handles from subsequent bounds changes.
-  void OnLongPressEvent();
-
-  // Allow showing the selection handles from the most recent selection bounds
-  // update (if valid), or a future valid bounds update.
-  void AllowShowingFromCurrentSelection();
-
-  // Hide the handles and suppress bounds updates until the next explicit
-  // showing allowance.
-  void HideAndDisallowShowingAutomatically();
-
-  // Override the handle visibility according to |hidden|.
-  void SetTemporarilyHidden(bool hidden);
-
-  // To be called when the editability of the focused region changes.
-  void OnSelectionEditable(bool editable);
-
-  // To be called when the contents of the focused region changes.
-  void OnSelectionEmpty(bool empty);
-
-  // Ticks an active animation, as requested to the client by |SetNeedsAnimate|.
-  // Returns true if an animation is active and requires further ticking.
-  bool Animate(base::TimeTicks animate_time);
-
- private:
-  enum InputEventType { TAP, LONG_PRESS, INPUT_EVENT_TYPE_NONE };
-
-  // TouchHandleClient implementation.
-  void OnHandleDragBegin(const TouchHandle& handle) override;
-  void OnHandleDragUpdate(const TouchHandle& handle,
-                          const gfx::PointF& new_position) override;
-  void OnHandleDragEnd(const TouchHandle& handle) override;
-  void OnHandleTapped(const TouchHandle& handle) override;
-  void SetNeedsAnimate() override;
-  scoped_ptr<TouchHandleDrawable> CreateDrawable() override;
-  base::TimeDelta GetTapTimeout() const override;
-  float GetTapSlop() const override;
-
-  void ShowInsertionHandleAutomatically();
-  void ShowSelectionHandlesAutomatically();
-
-  void OnInsertionChanged();
-  void OnSelectionChanged();
-
-  void ActivateInsertion();
-  void DeactivateInsertion();
-  void ActivateSelection();
-  void DeactivateSelection();
-  void ResetCachedValuesIfInactive();
-
-  const gfx::PointF& GetStartPosition() const;
-  const gfx::PointF& GetEndPosition() const;
-  gfx::Vector2dF GetStartLineOffset() const;
-  gfx::Vector2dF GetEndLineOffset() const;
-  bool GetStartVisible() const;
-  bool GetEndVisible() const;
-  TouchHandle::AnimationStyle GetAnimationStyle(bool was_active) const;
-
-  TouchSelectionControllerClient* const client_;
-  const base::TimeDelta tap_timeout_;
-  const float tap_slop_;
-
-  InputEventType response_pending_input_event_;
-
-  cc::ViewportSelectionBound start_;
-  cc::ViewportSelectionBound end_;
-  TouchHandleOrientation start_orientation_;
-  TouchHandleOrientation end_orientation_;
-
-  scoped_ptr<TouchHandle> insertion_handle_;
-  bool is_insertion_active_;
-  bool activate_insertion_automatically_;
-
-  scoped_ptr<TouchHandle> start_selection_handle_;
-  scoped_ptr<TouchHandle> end_selection_handle_;
-  bool is_selection_active_;
-  bool activate_selection_automatically_;
-
-  bool selection_empty_;
-  bool selection_editable_;
-
-  bool temporarily_hidden_;
-
-  DISALLOW_COPY_AND_ASSIGN(TouchSelectionController);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_H_