| // Copyright 2019 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_DRAG_DROP_OPERATION_H_ |
| #define COMPONENTS_EXO_DRAG_DROP_OPERATION_H_ |
| |
| #include "components/exo/data_device.h" |
| #include "components/exo/data_offer_observer.h" |
| #include "components/exo/data_source_observer.h" |
| #include "components/exo/surface_observer.h" |
| #include "components/exo/surface_tree_host.h" |
| #include "components/exo/wm_helper.h" |
| #include "ui/aura/client/drag_drop_client_observer.h" |
| #include "ui/base/dragdrop/drag_drop_types.h" |
| |
| namespace ash { |
| class DragDropController; |
| } // namespace ash |
| |
| namespace aura { |
| namespace client { |
| class DragDropClient; |
| } // namespace client |
| } // namespace aura |
| |
| namespace ui { |
| class OSExchangeData; |
| } |
| |
| namespace viz { |
| class CopyOutputResult; |
| } |
| |
| namespace exo { |
| class ScopedDataSource; |
| |
| // This class represents an ongoing drag-drop operation started by an exo |
| // client. It manages its own lifetime. It will delete itself when the drag |
| // operation completes, is cancelled, or some vital resource is destroyed |
| // (e.g. the client deletes the data source used to start the drag operation), |
| // or if another drag operation races with this one to start and wins. |
| class DragDropOperation : public DataSourceObserver, |
| public SurfaceTreeHost, |
| public SurfaceObserver, |
| public aura::client::DragDropClientObserver { |
| public: |
| // Create an operation for a drag-drop originating from a wayland app. |
| static base::WeakPtr<DragDropOperation> Create( |
| DataSource* source, |
| Surface* origin, |
| Surface* icon, |
| ui::DragDropTypes::DragEventSource event_source); |
| |
| // Abort the operation if it hasn't been started yet, otherwise do nothing. |
| void AbortIfPending(); |
| |
| // DataSourceObserver: |
| void OnDataSourceDestroying(DataSource* source) override; |
| |
| // SurfaceDelegate: |
| void OnSurfaceCommit() override; |
| |
| // SurfaceObserver: |
| void OnSurfaceDestroying(Surface* surface) override; |
| |
| // aura::client::DragDropClientObserver: |
| void OnDragStarted() override; |
| void OnDragEnded() override; |
| #if defined(OS_CHROMEOS) |
| void OnDragActionsChanged(int actions) override; |
| #endif |
| |
| private: |
| // A private constructor and destructor are used to prevent anyone else from |
| // attempting to manage the lifetime of a DragDropOperation. |
| DragDropOperation(DataSource* source, |
| Surface* origin, |
| Surface* icon, |
| ui::DragDropTypes::DragEventSource event_source); |
| ~DragDropOperation() override; |
| |
| void CaptureDragIcon(); |
| void OnDragIconCaptured(std::unique_ptr<viz::CopyOutputResult> icon_result); |
| |
| void OnTextRead(const std::string& mime_type, base::string16 data); |
| void OnHTMLRead(const std::string& mime_type, base::string16 data); |
| |
| void ScheduleStartDragDropOperation(); |
| |
| // This operation triggers a nested RunLoop, and should not be called |
| // directly. Use ScheduleStartDragDropOperation instead. |
| void StartDragDropOperation(); |
| |
| std::unique_ptr<ScopedDataSource> source_; |
| std::unique_ptr<ScopedSurface> icon_; |
| std::unique_ptr<ScopedSurface> origin_; |
| gfx::Point drag_start_point_; |
| std::unique_ptr<ui::OSExchangeData> os_exchange_data_; |
| #if defined(OS_CHROMEOS) |
| ash::DragDropController* drag_drop_controller_; |
| #else |
| aura::client::DragDropClient* drag_drop_controller_; |
| #endif // defined(OS_CHROMEOS) |
| |
| base::RepeatingClosure counter_; |
| |
| // Stores whether this object has just started a drag operation. If so, we |
| // want to ignore the OnDragStarted event. |
| bool started_by_this_object_ = false; |
| |
| bool captured_icon_ = false; |
| |
| // TODO(crbug.com/994065) This is currently not the actual mime type used by |
| // the recipient, just an arbitrary one we pick out of the offered types so we |
| // can report back whether or not the drop can succeed. This may need to |
| // change in the future. |
| std::string mime_type_; |
| |
| ui::DragDropTypes::DragEventSource event_source_; |
| |
| base::WeakPtrFactory<DragDropOperation> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DragDropOperation); |
| }; |
| |
| } // namespace exo |
| |
| #endif // COMPONENTS_EXO_DRAG_DROP_OPERATION_H_ |