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- // 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 COMPONENTS_EXO_DATA_DEVICE_H_
- #define COMPONENTS_EXO_DATA_DEVICE_H_
- #include <cstdint>
- #include "base/memory/weak_ptr.h"
- #include "components/exo/data_offer_observer.h"
- #include "components/exo/seat_observer.h"
- #include "components/exo/surface.h"
- #include "components/exo/surface_observer.h"
- #include "ui/base/clipboard/clipboard_observer.h"
- #include "ui/base/dragdrop/mojom/drag_drop_types.mojom-forward.h"
- namespace ui {
- class DropTargetEvent;
- }
- namespace exo {
- class DataDeviceDelegate;
- class DataOffer;
- class ScopedDataOffer;
- class DataSource;
- class Seat;
- class ScopedSurface;
- enum class DndAction { kNone, kCopy, kMove, kAsk };
- // DataDevice to start drag and drop and copy and paste oprations.
- class DataDevice : public WMHelper::DragDropObserver,
- public DataOfferObserver,
- public ui::ClipboardObserver,
- public SurfaceObserver,
- public SeatObserver {
- public:
- DataDevice(DataDeviceDelegate* delegate, Seat* seat);
- DataDevice(const DataDevice&) = delete;
- DataDevice& operator=(const DataDevice&) = delete;
- ~DataDevice() override;
- // Starts drag-and-drop operation.
- // |source| represents data comes from the client starting drag operation. Can
- // be null if the data will be transferred only in the client. |origin| is
- // the surface which starts the drag and drop operation. |icon| is the
- // nullable image which is rendered at the next to cursor while drag
- // operation.
- void StartDrag(DataSource* source,
- Surface* origin,
- Surface* icon,
- ui::mojom::DragEventSource event_source);
- // Sets selection data to the clipboard.
- // |source| represents data comes from the client.
- void SetSelection(DataSource* source);
- // Overridden from WMHelper::DragDropObserver:
- void OnDragEntered(const ui::DropTargetEvent& event) override;
- aura::client::DragUpdateInfo OnDragUpdated(
- const ui::DropTargetEvent& event) override;
- void OnDragExited() override;
- WMHelper::DragDropObserver::DropCallback GetDropCallback() override;
- // Overridden from ui::ClipboardObserver:
- void OnClipboardDataChanged() override;
- // Overridden from SeatObserver:
- void OnSurfaceFocused(Surface* surface,
- Surface* lost_focus,
- bool has_focused_client) override;
- // Overridden from DataOfferObserver:
- void OnDataOfferDestroying(DataOffer* data_offer) override;
- // Overridden from SurfaceObserver:
- void OnSurfaceDestroying(Surface* surface) override;
- DataDeviceDelegate* get_delegate() { return delegate_; }
- private:
- Surface* GetEffectiveTargetForEvent(const ui::DropTargetEvent& event) const;
- void SetSelectionToCurrentClipboardData();
- void PerformDropOrExitDrag(base::ScopedClosureRunner exit_drag,
- ui::mojom::DragOperation& output_drag_op);
- DataDeviceDelegate* const delegate_;
- Seat* const seat_;
- std::unique_ptr<ScopedDataOffer> data_offer_;
- std::unique_ptr<ScopedSurface> focused_surface_;
- base::OnceClosure quit_closure_;
- bool drop_succeeded_;
- base::WeakPtrFactory<DataDevice> drop_weak_factory_{this};
- base::WeakPtrFactory<DataDevice> weak_factory_{this};
- };
- } // namespace exo
- #endif // COMPONENTS_EXO_DATA_DEVICE_H_
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