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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_DATA_DEVICE_BASE_H_
#define UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_DATA_DEVICE_BASE_H_
#include <string>
#include "base/files/scoped_file.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "ui/ozone/platform/wayland/common/wayland_object.h"
#include "ui/ozone/platform/wayland/host/wayland_data_offer_base.h"
#include "ui/ozone/public/platform_clipboard.h"
namespace ui {
class WaylandConnection;
// Implements high level (protocol-agnostic) interface to a Wayland data device.
class WaylandDataDeviceBase {
public:
using SelectionOfferCallback =
base::RepeatingCallback<void(WaylandDataOfferBase*)>;
explicit WaylandDataDeviceBase(WaylandConnection* connection);
WaylandDataDeviceBase(const WaylandDataDeviceBase&) = delete;
WaylandDataDeviceBase& operator=(const WaylandDataDeviceBase&) = delete;
virtual ~WaylandDataDeviceBase();
// Sets the callback responsible for handling selection events.
void set_selection_offer_callback(SelectionOfferCallback callback) {
DCHECK(!selection_offer_callback_ || !callback);
selection_offer_callback_ = callback;
}
// Returns MIME types given by the current data offer.
const std::vector<std::string>& GetAvailableMimeTypes() const;
// Synchronously reads and returns selection data with |mime_type| format.
// TODO(crbug.com/40398800): Drop once Clipboard API becomes async.
PlatformClipboard::Data ReadSelectionData(const std::string& mime_type);
protected:
WaylandConnection* connection() const { return connection_; }
WaylandDataOfferBase* data_offer() { return data_offer_.get(); }
void set_data_offer(std::unique_ptr<WaylandDataOfferBase> data_offer) {
data_offer_ = std::move(data_offer);
}
// Resets the data offer.
void ResetDataOffer();
void NotifySelectionOffer(WaylandDataOfferBase* offer) const;
private:
SelectionOfferCallback selection_offer_callback_;
// Used to call out to WaylandConnection once clipboard data has been
// successfully read.
const raw_ptr<WaylandConnection> connection_;
// Offer that holds the most-recent clipboard selection, or null if no
// clipboard data is available.
std::unique_ptr<WaylandDataOfferBase> data_offer_;
};
} // namespace ui
#endif // UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_DATA_DEVICE_BASE_H_
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