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// Copyright 2015 The Chromium Authors
// 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_AURA_H_
#define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_CLIENT_AURA_H_
#include <memory>
#include "base/memory/raw_ptr.h"
#include "base/observer_list.h"
#include "base/timer/timer.h"
#include "content/common/content_export.h"
#include "content/public/browser/touch_selection_controller_client_manager.h"
#include "ui/touch_selection/touch_selection_controller.h"
#include "ui/touch_selection/touch_selection_menu_runner.h"
namespace ui {
class TouchSelectionMagnifierAura;
}
namespace content {
struct ContextMenuParams;
class RenderWidgetHostViewAura;
// An implementation of |TouchSelectionControllerClient| to be used in Aura's
// implementation of touch selection for contents.
class CONTENT_EXPORT TouchSelectionControllerClientAura
: public ui::TouchSelectionControllerClient,
public ui::TouchSelectionMenuClient,
public TouchSelectionControllerClientManager {
public:
explicit TouchSelectionControllerClientAura(RenderWidgetHostViewAura* rwhva);
TouchSelectionControllerClientAura(
const TouchSelectionControllerClientAura&) = delete;
TouchSelectionControllerClientAura& operator=(
const TouchSelectionControllerClientAura&) = delete;
~TouchSelectionControllerClientAura() override;
// Called when |rwhva_|'s window is moved, to update the quick menu's
// position.
void OnWindowMoved();
// Called on first touch down/last touch up to hide/show the quick menu.
void OnTouchDown();
void OnTouchUp();
// Called when touch scroll starts/completes to hide/show touch handles and
// the quick menu.
void OnScrollStarted();
void OnScrollCompleted();
// Gives an opportunity to the client to handle context menu request and show
// the quick menu instead, if appropriate. Returns |true| to indicate that no
// further handling is needed.
// TODO(mohsen): This is to match Chrome on Android behavior. However, it is
// better not to send context menu request from the renderer in this case and
// instead decide in the client about showing the quick menu in response to
// selection events. (http://crbug.com/548245)
virtual bool HandleContextMenu(const ContextMenuParams& params);
virtual void UpdateClientSelectionBounds(const gfx::SelectionBound& start,
const gfx::SelectionBound& end);
// TouchSelectionControllerClientManager.
void DidStopFlinging() override;
void OnSwipeToMoveCursorBegin() override;
void OnSwipeToMoveCursorEnd() override;
void OnClientHitTestRegionUpdated(
ui::TouchSelectionControllerClient* client) 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(
TouchSelectionControllerClientManager::Observer* observer) override;
void RemoveObserver(
TouchSelectionControllerClientManager::Observer* observer) override;
private:
friend class TestTouchSelectionControllerClientAura;
class EnvEventObserver;
class EnvPreTargetHandler;
bool IsQuickMenuAvailable() const;
void ShowQuickMenu();
void UpdateQuickMenu();
void ShowMagnifier();
void HideMagnifier();
// ui::TouchSelectionControllerClient:
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 ui::TouchSelectionDraggable::Type type,
const gfx::PointF& position) override;
std::unique_ptr<ui::TouchHandleDrawable> CreateDrawable() override;
void DidScroll() override;
// ui::TouchSelectionMenuClient:
bool IsCommandIdEnabled(int command_id) const override;
void ExecuteCommand(int command_id, int event_flags) override;
void RunContextMenu() override;
bool ShouldShowQuickMenu() override;
std::u16string GetSelectedText() override;
// Not owned, non-null for the lifetime of this object.
raw_ptr<RenderWidgetHostViewAura> rwhva_;
class InternalClient final : public TouchSelectionControllerClient {
public:
explicit InternalClient(RenderWidgetHostViewAura* rwhva) : rwhva_(rwhva) {}
~InternalClient() final {}
bool SupportsAnimation() const final;
void SetNeedsAnimate() final;
void MoveCaret(const gfx::PointF& position) final;
void MoveRangeSelectionExtent(const gfx::PointF& extent) final;
void SelectBetweenCoordinates(const gfx::PointF& base,
const gfx::PointF& extent) final;
void OnSelectionEvent(ui::SelectionEventType event) final;
void OnDragUpdate(const ui::TouchSelectionDraggable::Type type,
const gfx::PointF& position) final;
std::unique_ptr<ui::TouchHandleDrawable> CreateDrawable() final;
void DidScroll() override;
private:
raw_ptr<RenderWidgetHostViewAura, DanglingUntriaged> rwhva_;
} internal_client_;
// Keep track of which client interface to use.
raw_ptr<TouchSelectionControllerClient> active_client_;
raw_ptr<TouchSelectionMenuClient> active_menu_client_;
gfx::SelectionBound manager_selection_start_;
gfx::SelectionBound manager_selection_end_;
base::ObserverList<TouchSelectionControllerClientManager::Observer>
observers_;
base::RetainingOneShotTimer quick_menu_timer_;
bool quick_menu_requested_;
bool touch_down_;
bool scroll_in_progress_;
bool handle_drag_in_progress_;
bool show_quick_menu_immediately_for_test_;
// An event observer that deactivates touch selection on certain input events.
std::unique_ptr<EnvEventObserver> env_event_observer_;
// Magnifier which is shown when touch dragging to adjust the selection.
std::unique_ptr<ui::TouchSelectionMagnifierAura> touch_selection_magnifier_;
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_CLIENT_AURA_H_
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