content/browser/renderer_host/input/touch_selection_controller_client_manager_android.h

// Copyright 2017 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_CLIENT_MANAGER_ANDROID_H_
#define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_CLIENT_MANAGER_ANDROID_H_

#include "base/macros.h"
#include "base/observer_list.h"
#include "components/viz/host/hit_test/hit_test_region_observer.h"
#include "content/public/browser/touch_selection_controller_client_manager.h"
#include "ui/touch_selection/touch_selection_controller.h"

namespace viz {

class HostFrameSinkManager;
class FrameSinkId;
struct AggregatedHitTestRegion;

}  // namespace viz

namespace content {

class RenderWidgetHostViewAndroid;

class TouchSelectionControllerClientManagerAndroid
    : public TouchSelectionControllerClientManager,
      public ui::TouchSelectionControllerClient,
      public viz::HitTestRegionObserver {
 public:
  explicit TouchSelectionControllerClientManagerAndroid(
      RenderWidgetHostViewAndroid* rwhv,
      viz::HostFrameSinkManager* frame_host_sink_manager);
  ~TouchSelectionControllerClientManagerAndroid() override;

  // TouchSelectionControllerClientManager implementation.
  void DidStopFlinging() override;
  void UpdateClientSelectionBounds(
      const gfx::SelectionBound& start,
      const gfx::SelectionBound& end,
      ui::TouchSelectionControllerClient* client,
      ui::TouchSelectionMenuClient* menu_client) override;
  void InvalidateClient(ui::TouchSelectionControllerClient* client) override;
  ui::TouchSelectionController* GetTouchSelectionController() override;

  void AddObserver(Observer* observer) override;
  void RemoveObserver(Observer* observer) override;

  // TouchSelectionControllerClient implementation.
  bool SupportsAnimation() const override;
  void SetNeedsAnimate() override;
  void MoveCaret(const gfx::PointF& position) override;
  void MoveRangeSelectionExtent(const gfx::PointF& extent) override;
  void SelectBetweenCoordinates(const gfx::PointF& base,
                                const gfx::PointF& extent) override;
  void OnSelectionEvent(ui::SelectionEventType event) override;
  void OnDragUpdate(const gfx::PointF& position) override;
  std::unique_ptr<ui::TouchHandleDrawable> CreateDrawable() override;
  void DidScroll() override;

  // viz::HitTestRegionObserver implementation.
  void OnAggregatedHitTestRegionListUpdated(
      const viz::FrameSinkId& frame_sink_id,
      const std::vector<viz::AggregatedHitTestRegion>& hit_test_data) override;

 private:
  // Neither of the following pointers are owned, and both are assumed to
  // outlive this object.
  RenderWidgetHostViewAndroid* rwhv_;
  viz::HostFrameSinkManager* host_frame_sink_manager_;

  TouchSelectionControllerClient* active_client_;
  gfx::SelectionBound manager_selection_start_;
  gfx::SelectionBound manager_selection_end_;
  base::ObserverList<TouchSelectionControllerClientManager::Observer>::Unchecked
      observers_;

  DISALLOW_COPY_AND_ASSIGN(TouchSelectionControllerClientManagerAndroid);
};

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_CLIENT_MANAGER_ANDROID_H_