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/*
SPDX-FileCopyrightText: 2010 Jan Lepper <dehtris@yahoo.de>
SPDX-FileCopyrightText: 2010-2022 Krusader Krew <https://krusader.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef DIRLISTERINTERFACE_H
#define DIRLISTERINTERFACE_H
// QtCore
#include <QObject>
#include <QUrl>
class FileItem;
/**
* A minimal interface representing a list of files in a directory.
*/
class DirListerInterface : public QObject
{
Q_OBJECT
public:
explicit DirListerInterface(QObject *parent)
: QObject(parent)
{
}
~DirListerInterface() override = default;
/**
* Return the file items of all files and directories. Without current (".") and parent ("..")
* directory.
*/
virtual QList<FileItem *> fileItems() const = 0;
/**
* Return the number of all file items.
*/
virtual unsigned long numFileItems() const = 0;
/**
* Return true if the directory does not have a parent, else false.
*/
virtual bool isRoot() const = 0;
signals:
/**
* Emitted when scanning the directory for file items finished. The list of file items should
* now be updated by the view.
* @param dirChange true if changed to another directory.
*/
void scanDone(bool dirChange);
/**
* Emitted when all file items were removed. The file items may be deleted after this signal and
* should not be used anymore.
*/
void cleared();
/**
* Emitted when a file was added to the list of file items (not by scan).
*/
void addedFileItem(FileItem *fileItem);
/**
* Emitted when a file item (with the same name) was replaced.
* The old file item will be deleted after this signal.
*/
void updatedFileItem(FileItem *newFileItem);
};
#endif // DIRLISTERINTERFACE_H
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