1ee00bc6f9
At the moment, the data offer initializes supported and preferred action to "none". But if the target doesn't accept anything the source provides, the compositor may still need to send action events with "none" This change makes data offer and data source provide dnd actions wrapped in std::optional in order to indicate if they have been set explicitly.
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
/*
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SPDX-FileCopyrightText: 2014 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-FileCopyrightText: 2020 David Edmundson <davidedmundson@kde.org>
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SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
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*/
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#pragma once
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#include "kwin_export.h"
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#include <QObject>
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#include "datadevicemanager_interface.h"
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#include <optional>
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namespace KWaylandServer
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{
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class DataDeviceInterface;
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class AbstractDataSource;
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class DataOfferInterfacePrivate;
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/**
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* @brief Represents the Resource for the wl_data_offer interface.
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*
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*/
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class KWIN_EXPORT DataOfferInterface : public QObject
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{
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Q_OBJECT
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public:
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virtual ~DataOfferInterface();
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void sendAllOffers();
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void sendSourceActions();
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wl_resource *resource() const;
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/**
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* @returns The Drag and Drop actions supported by this DataOfferInterface.
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*/
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std::optional<DataDeviceManagerInterface::DnDActions> supportedDragAndDropActions() const;
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/**
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* @returns The preferred Drag and Drop action of this DataOfferInterface.
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*/
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std::optional<DataDeviceManagerInterface::DnDAction> preferredDragAndDropAction() const;
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/**
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* This event indicates the @p action selected by the compositor after matching the
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* source/destination side actions. Only one action (or none) will be offered here.
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*/
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void dndAction(DataDeviceManagerInterface::DnDAction action);
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Q_SIGNALS:
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/**
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* Emitted whenever the supported or preferred Drag and Drop actions changed.
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*/
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void dragAndDropActionsChanged();
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private:
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friend class DataDeviceInterfacePrivate;
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explicit DataOfferInterface(AbstractDataSource *source, wl_resource *resource);
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QScopedPointer<DataOfferInterfacePrivate> d;
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};
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}
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Q_DECLARE_METATYPE(KWaylandServer::DataOfferInterface *)
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