gui: Add button for changing backup group owner

Extension of fix #2847

Adds an action button to the datastore content view,
to change the owner of a backup.

Signed-off-by: Dylan Whyte <d.whyte@proxmox.com>

www/BackupGroupChangeOwner.js

@@ -0,0 +1,46 @@
+Ext.define('PBS.BackupGroupChangeOwner', {
+    extend: 'Proxmox.window.Edit',
+    alias: 'widget.pbsBackupGroupChangeOwner',
+
+    submitText: gettext("Change Owner"),
+    subject: gettext("Change Owner"),
+
+    initComponent: function() {
+	let me = this;
+
+	if (!me.datastore) {
+	    throw "no datastore specified";
+	}
+	if (!me.backup_type) {
+	    throw "no backup_type specified";
+	}
+	if (!me.backup_id) {
+	    throw "no backup_id specified";
+	}
+
+	Ext.apply(me, {
+	    url: `/api2/extjs/admin/datastore/${me.datastore}/change-owner`,
+	    method: 'POST',
+	    items: {
+		xtype: 'inputpanel',
+		onGetValues: function(values) {
+		    values["backup-type"] = me.backup_type;
+		    values["backup-id"] = me.backup_id;
+		    return values;
+		},
+
+		column1: [
+		    {
+			xtype: 'textfield',
+			name: 'new-owner',
+			fieldLabel: gettext('Userid'),
+			minLength: 8,
+			allowBlank: false,
+		    },
+		],
+	    },
+	});
+
+	me.callParent();
+    },
+});

www/Makefile

@@ -52,6 +52,7 @@ JSSRC=							\
 	datastore/Prune.js				\
 	datastore/Content.js				\
 	datastore/Panel.js				\
+	BackupGroupChangeOwner.js			\
 	ServerStatus.js					\
 	ServerAdministration.js				\
 	Dashboard.js					\

www/datastore/Content.js

@@ -268,6 +268,24 @@ Ext.define('PBS.DataStoreContent', {
 	    }
 	},
 
+	onChangeOwner: function(view, rI, cI, item, e, rec) {
+	    view = this.getView();
+
+	    if (!rec || !rec.data || rec.parentNode.id !== 'root' || !view.datastore) {
+		return;
+	    }
+
+	    let data = rec.data;
+
+	    let win = Ext.create('PBS.BackupGroupChangeOwner', {
+		datastore: view.datastore,
+		backup_type: data.backup_type,
+		backup_id: data.backup_id,
+		autoShow: true,
+	    });
+	    win.on('destroy', this.reload, this);
+	},
+
 	onPrune: function(view, rI, cI, item, e, rec) {
 	    view = this.getView();
 
@@ -583,6 +601,12 @@ Ext.define('PBS.DataStoreContent', {
 		    getClass: (v, m, rec) => rec.data.leaf ? 'pmx-hidden' : 'pve-icon-verify-lettering',
 		    isDisabled: (v, r, c, i, rec) => !!rec.data.leaf,
                 },
+                {
+		    handler: 'onChangeOwner',
+		    getClass: (v, m, rec) => rec.parentNode.id ==='root' ? 'fa fa-user' : 'pmx-hidden',
+		    getTip: (v, m, rec) => Ext.String.format(gettext("Change owner of '{0}'"), v),
+		    isDisabled: (v, r, c, i, rec) => rec.parentNode.id !=='root',
+                },
 		{
 		    handler: 'onPrune',
 		    getTip: (v, m, rec) => Ext.String.format(gettext("Prune '{0}'"), v),