Add and use an enum for tracking UDSEntry extras.

src/gdrive_udsentry.h

+/*
+ * Copyright 2020  David Barchiesi <david@barchie.si>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License or (at your option) version 3 or any later version
+ * accepted by the membership of KDE e.V. (or its successor approved
+ * by the membership of KDE e.V.), which shall act as a proxy
+ * defined in Section 14 of version 3 of the license.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef GDRIVEUDSENTRY_H
+#define GDRIVEUDSENTRY_H
+
+#include <KIO/UDSEntry>
+
+enum GDriveUDSEntryExtras {
+    Url = KIO::UDSEntry::UDS_EXTRA,
+    Id,
+    Md5,
+    Owners,
+    Version,
+    LastModifyingUser,
+    Description
+};
+
+#endif // GDRIVEUDSENTRY_H

src/integration/copyurlitemaction/copyurlitemaction.cpp

@@ -18,6 +18,7 @@
  */
 
 #include "copyurlitemaction.h"
+#include "../../gdrive_udsentry.h"
 
 #include <QGuiApplication>
 #include <QClipboard>
@@ -50,7 +51,7 @@ QList<QAction*> CopyUrlItemAction::actions(const KFileItemListProperties& fileIt
     }
 
     const KIO::UDSEntry entry = item.entry();
-    const QString gdriveLink = entry.stringValue(KIO::UDSEntry::UDS_EXTRA);
+    const QString gdriveLink = entry.stringValue(GDriveUDSEntryExtras::Url);
     // Ignore if missing a shareable link
     if (gdriveLink.isEmpty()) {
         return {};

src/kio_gdrive.cpp

@@ -23,6 +23,7 @@
 #include "gdrivehelper.h"
 #include "gdriveurl.h"
 #include "gdriveversion.h"
+#include "gdrive_udsentry.h"
 
 #include <QApplication>
 #include <QMimeDatabase>
@@ -236,7 +237,7 @@ KIO::UDSEntry KIOGDrive::fileToUDSEntry(const FilePtr &origFile, const QString &
         entry.fastInsert(KIO::UDSEntry::UDS_ACCESS, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IWGRP | S_IXGRP | S_IROTH | S_IXOTH);
     }
 
-    entry.fastInsert(KIO::UDSEntry::UDS_EXTRA, file->alternateLink().toString());
+    entry.fastInsert(GDriveUDSEntryExtras::Url, file->alternateLink().toString());
 
     return entry;
 }