chromium/ui/ozone/platform/wayland/host/wayland_window_drag_controller.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_WINDOW_DRAG_CONTROLLER_H_
#define UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_WINDOW_DRAG_CONTROLLER_H_

#include <cstdint>
#include <iosfwd>
#include <memory>
#include <ostream>
#include <string>

#include "base/functional/callback_forward.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "ui/base/dragdrop/mojom/drag_drop_types.mojom-forward.h"
#include "ui/events/event.h"
#include "ui/events/platform/platform_event_dispatcher.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/geometry/vector2d.h"
#include "ui/ozone/platform/wayland/common/wayland_object.h"
#include "ui/ozone/platform/wayland/gpu/wayland_surface_factory.h"
#include "ui/ozone/platform/wayland/host/wayland_data_device.h"
#include "ui/ozone/platform/wayland/host/wayland_data_source.h"
#include "ui/ozone/platform/wayland/host/wayland_keyboard.h"
#include "ui/ozone/platform/wayland/host/wayland_pointer.h"
#include "ui/ozone/platform/wayland/host/wayland_serial_tracker.h"
#include "ui/ozone/platform/wayland/host/wayland_toplevel_window.h"
#include "ui/ozone/platform/wayland/host/wayland_touch.h"
#include "ui/ozone/platform/wayland/host/wayland_window_observer.h"

namespace ui {

class ScopedEventDispatcher;
class WaylandConnection;
class WaylandDataDeviceManager;
class WaylandDataOffer;
class WaylandWindow;
class WaylandWindowManager;
class WaylandSurface;

// Drag controller implementation that drives window moving sessions (aka: tab
// dragging). Wayland Drag and Drop protocol is used, under the hood, to keep
// track of cursor location and surface focus.
//
// TODO(crbug.com/40598679): Use drag icon to emulate window moving.
class WaylandWindowDragController : public WaylandDataDevice::DragDelegate,
                                    public WaylandDataSource::Delegate,
                                    public PlatformEventDispatcher,
                                    public WaylandWindowObserver { … };

// Stream operator so WaylandWindowDragController::State can be used in
// log/assertion statements.
std::ostream& operator<<(std::ostream& out,
                         WaylandWindowDragController::State state);

}  // namespace ui

#endif  // UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_WINDOW_DRAG_CONTROLLER_H_