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

// Copyright 2018 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_DATA_SOURCE_H_
#define UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_DATA_SOURCE_H_

#include <cstdint>
#include <string>
#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/notreached.h"
#include "base/time/time.h"
#include "ui/ozone/platform/wayland/common/wayland_object.h"

struct wl_data_source;
struct gtk_primary_selection_source;
struct zwp_primary_selection_source_v1;

namespace base {
class TimeTicks;
}

namespace wl {
template <typename T>
class DataSource;
}  // namespace wl

namespace ui {

class WaylandConnection;

// DataSource represents the source side of a DataOffer. It is created by the
// source client in a data transfer and provides a way to describe the offered
// data and a way to respond to requests to transfer the data. There are a few
// variants of Wayland protocol objects and extensions supporting different
// features. E.g: regular copy/paste and drag operations are implemented by
// wl_data_source (along with its _device and _offer counterparts), etc.
// Implementation wise, these variants are share a single class template, with
// specializations defined for each underlying supported extensions. Below are
// the type aliases for the variants currently supported.

WaylandDataSource;

GtkPrimarySelectionSource;

ZwpPrimarySelectionSource;

}  // namespace ui

namespace wl {

// Template class implementing DataSource, whereas T is the underlying source
// type, e.g: wl_data_source, gtk_primary_selection_source, etc. This class
// is not supposed to be used directly, instead use the aliases defined above.
template <typename T>
class DataSource {};

}  // namespace wl

#endif  // UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_DATA_SOURCE_H_