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// Copyright 2019 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_CLIPBOARD_H_
#define UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_CLIPBOARD_H_
#include <memory>
#include <string>
#include "base/functional/callback.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "ui/base/clipboard/clipboard_buffer.h"
#include "ui/ozone/platform/wayland/host/wayland_data_device.h"
#include "ui/ozone/public/platform_clipboard.h"
namespace wl {
class Clipboard;
} // namespace wl
namespace ui {
class WaylandConnection;
class WaylandDataDeviceManager;
// This class is a wrapper around Wayland data_device protocols that simulates
// typical clipboard operations. Unlike some other platforms, data-transfer is
// an async, lazy operation. This means that even after "writing" data to the
// system clipboard, this class must still hold on to a local cache of the
// clipboard contents, since it may be read (repeatedly) by other Wayland
// clients.
//
// WaylandDataDeviceManager singleton is required to be up and running for
// WaylandClipboard to be minimally functional.
class WaylandClipboard : public PlatformClipboard {
public:
WaylandClipboard(WaylandConnection* connection,
WaylandDataDeviceManager* device_manager);
WaylandClipboard(const WaylandClipboard&) = delete;
WaylandClipboard& operator=(const WaylandClipboard&) = delete;
~WaylandClipboard() override;
// PlatformClipboard.
void OfferClipboardData(
ClipboardBuffer buffer,
const PlatformClipboard::DataMap& data_map,
PlatformClipboard::OfferDataClosure callback) override;
void RequestClipboardData(
ClipboardBuffer buffer,
const std::string& mime_type,
PlatformClipboard::RequestDataClosure callback) override;
void GetAvailableMimeTypes(
ClipboardBuffer buffer,
PlatformClipboard::GetMimeTypesClosure callback) override;
bool IsSelectionOwner(ClipboardBuffer buffer) override;
void SetClipboardDataChangedCallback(
ClipboardDataChangedCallback data_changed_callback) override;
bool IsSelectionBufferAvailable() const override;
private:
friend class WaylandClipboardTest;
// Get the wl::Clipboard instance owning a given |buffer|. Can return null in
// case |buffer| is unsupported. E.g: primary selection is not available.
wl::Clipboard* GetClipboard(ClipboardBuffer buffer);
// WaylandConnection providing optional data device managers, e.g: gtk
// primary selection.
const raw_ptr<WaylandConnection> connection_;
const std::unique_ptr<wl::Clipboard> copypaste_clipboard_;
std::unique_ptr<wl::Clipboard> primary_selection_clipboard_;
};
} // namespace ui
#endif // UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_CLIPBOARD_H_
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