abstract_data_source.h

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/*
    SPDX-FileCopyrightText: 2020 David Edmundson <davidedmundson@kde.org>
 
    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
 
#pragma once
 
#include "kwin_export.h"
 
#include "clientconnection.h"
#include "datadevicemanager.h"
 
struct wl_client;
 
namespace KWin
{
// Anything related to selections are pure virtual, content relating
// to drag and drop has a default implementation
 
class KWIN_EXPORT AbstractDataSource : public QObject
{
    Q_OBJECT
public:
    virtual bool isAccepted() const
    {
        return false;
    }
 
    virtual void accept(const QString &mimeType)
    {
    };
    virtual void requestData(const QString &mimeType, qint32 fd) = 0;
    virtual void cancel() = 0;
 
    virtual QStringList mimeTypes() const = 0;
 
    virtual DataDeviceManagerInterface::DnDActions supportedDragAndDropActions() const
    {
        return {};
    };
    virtual DataDeviceManagerInterface::DnDAction selectedDndAction() const
    {
        return DataDeviceManagerInterface::DnDAction::None;
    }
    virtual void dropPerformed(){};
    virtual void dndFinished(){};
    virtual void dndAction(DataDeviceManagerInterface::DnDAction action)
    {
    };
 
    virtual void dndCancelled()
    {
    }
 
    virtual wl_client *client() const
    {
        return nullptr;
    };
 
Q_SIGNALS:
    void aboutToBeDestroyed();
 
    void mimeTypeOffered(const QString &);
    void supportedDragAndDropActionsChanged();
 
protected:
    explicit AbstractDataSource(QObject *parent = nullptr);
};
 
}