Integrate file uploads and downloads with plasma's job tracker

Implements #538

src/filetransferpseudojob.cpp

@@ -0,0 +1,50 @@
+// SPDX-FileCopyrightText: 2022 Tobias Fella <fella@posteo.de>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "filetransferpseudojob.h"
+#include <KLocalizedString>
+#include <QDebug>
+#include <QUrl>
+
+FileTransferPseudoJob::FileTransferPseudoJob(Operation operation, const QString &path, const QString &eventId)
+    : KJob()
+    , m_path(path)
+    , m_eventId(eventId)
+    , m_operation(operation)
+{
+}
+
+void FileTransferPseudoJob::fileTransferProgress(QString id, qint64 progress, qint64 total)
+{
+    if (id != m_eventId) {
+        return;
+    }
+    setProcessedAmount(Unit::Bytes, progress);
+    setTotalAmount(Unit::Bytes, total);
+}
+
+void FileTransferPseudoJob::fileTransferCompleted(QString id, QUrl localFile)
+{
+    if (id != m_eventId) {
+        return;
+    }
+    emitResult();
+}
+
+void FileTransferPseudoJob::fileTransferFailed(QString id, QString errorMessage)
+{
+    if (id != m_eventId) {
+        return;
+    }
+    setErrorText(errorMessage);
+    emitResult();
+}
+
+void FileTransferPseudoJob::start()
+{
+    setTotalAmount(Unit::Files, 1);
+    Q_EMIT description(this,
+                       m_operation == Download ? i18nc("Job heading, like 'Copying'", "Downloading") : i18nc("Job heading, like 'Copying'", "Uploading"),
+                       {i18nc("The URL being downloaded/uploaded", "Source"), m_path},
+                       {i18nc("The location being downloaded to", "Destination"), m_path});
+}