[RFC PATCH proxmox-backup 4/4] ui: tape restore: add selector for additional drives

[Jakob-Tobias Winter <tobias@stuttgart.de>]

Allow choosing up to three more drives for a tape restore, to read
several media in parallel.

Signed-off-by: Jakob-Tobias Winter <tobias@stuttgart.de>
---
 www/tape/window/TapeRestore.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/www/tape/window/TapeRestore.js b/www/tape/window/TapeRestore.js
index 8ee4f17a9..d28d2f242 100644
--- a/www/tape/window/TapeRestore.js
+++ b/www/tape/window/TapeRestore.js
@@ -374,6 +374,11 @@ Ext.define('PBS.TapeManagement.TapeRestoreWindow', {
                         let controller = me.up('window').getController();
                         let vm = controller.getViewModel();
                         let datastores = [];
+
+                        let additionalDrives = values['additional-drives'];
+                        if (!additionalDrives || additionalDrives.length === 0) {
+                            delete values['additional-drives'];
+                        }
                         if (values.store.toString() !== '') {
                             let target = values.store.toString();
                             delete values.store;
@@ -479,6 +484,16 @@ Ext.define('PBS.TapeManagement.TapeRestoreWindow', {
                             fieldLabel: gettext('Drive'),
                             labelWidth: 120,
                         },
+                        {
+                            xtype: 'pbsDriveSelector',
+                            name: 'additional-drives',
+                            fieldLabel: gettext('Additional Drives'),
+                            labelWidth: 120,
+                            multiSelect: true,
+                            allowBlank: true,
+                            skipEmptyText: true,
+                            emptyText: gettext('None'),
+                        },
                         {
                             xtype: 'pbsDataStoreSelector',
                             name: 'store',
-- 
2.53.0