ui: tape/ChangerStatus: shortcut 'load-media' for single drive

if a changer only has a single drive, there is no point in showing
a window with a DriveSelector, just do want the user wanted.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

www/tape/ChangerStatus.js

@@ -163,7 +163,28 @@ Ext.define('PBS.TapeManagement.ChangerStatus', {
 	    let label = record.data['label-text'];
 
 	    let changer = encodeURIComponent(view.changer);
+	    let singleDrive = me.drives.length === 1 ? me.drives[0] : undefined;
 
+	    if (singleDrive !== undefined) {
+		Proxmox.Utils.API2Request({
+		    method: 'POST',
+		    params: {
+			'label-text': label,
+		    },
+		    url: `/api2/extjs/tape/drive/${singleDrive}/load-media`,
+		    success: function(response, opt) {
+			Ext.create('Proxmox.window.TaskProgress', {
+			    upid: response.result.data,
+			    taskDone: function(success) {
+				me.reload();
+			    },
+			}).show();
+		    },
+		    failure: function(response, opt) {
+			Ext.Msg.alert(gettext('Error'), response.htmlStatus);
+		    },
+		});
+	    } else {
 		Ext.create('Proxmox.window.Edit', {
 		    isCreate: true,
 		    autoShow: true,
@@ -197,6 +218,7 @@ Ext.define('PBS.TapeManagement.ChangerStatus', {
 			},
 		    },
 		});
+	    }
 	},
 
 	unload: async function(v, rI, cI, button, el, record) {