use new button class

www/manager/storage/ContentView.js

@@ -203,6 +203,8 @@ Ext.define('PVE.storage.ContentView', {
 	    }
 	});
 
+	var sm = Ext.create('Ext.selection.RowModel', {});
+
 	var groupingFeature = Ext.create('Ext.grid.feature.Grouping',{
             groupHeaderTpl: 'ContentType: {name} ({rows.length} Item{[values.rows.length > 1 ? "s" : ""]})'
 	});
@@ -211,26 +213,32 @@ Ext.define('PVE.storage.ContentView', {
 	    store.load();
 	};
 
- 	var remove_btn = new Ext.Button({
+ 	Ext.apply(me, {
+	    store: store,
+	    selModel: sm,
+	    stateful: false,
+	    viewConfig: {
+		trackOver: false
+	    },
+	    features: [ groupingFeature ],
+	    tbar: [
+		{
+		    text: 'Restore'
+		},
+		{
+		    xtype: 'pveButton',
 		    text: 'Delete',
+		    selModel: sm,
 		    disabled: true,
-	    handler: function() {
-		var sm = me.getSelectionModel();
-		var rec = sm.getSelection()[0];
-		if (!rec) {
-		    return;
-		}
-
-		var volid = rec.data.volid;
-
-		var msg = 'Are you sure you want to delete volume "' + volid + '"';
-		Ext.Msg.confirm('Deletion Confirmation', msg, function(btn) {
-		    if (btn !== 'yes') {
-			return;
-		    }
-
+		    confirmMsg: function(rec) {
+			return 'Are you sure you want to delete volume "' + rec.data.volid + '"';
+		    },
+		    enableFn: function(rec) {
+			return rec && rec.data.content !== 'images';
+		    },
+		    handler: function(b, e, rec) {
 			PVE.Utils.API2Request({
-			url: baseurl + '/' + volid,
+			    url: baseurl + '/' + rec.data.volid,
 			    method: 'DELETE',
 			    waitMsgTarget: me,
 			    callback: function() {
@@ -240,34 +248,8 @@ Ext.define('PVE.storage.ContentView', {
 				Ext.Msg.alert('Error', response.htmlStatus);
 			    }
 			});
-		});
 		    }
-        });
-
-	var set_button_status = function() {
-	    var sm = me.getSelectionModel();
-	    var rec = sm.getSelection()[0];
-
-	    if (!rec || rec.data.content === 'images') {
-		remove_btn.setDisabled(true);
-		return;
-	    }
-
-	    remove_btn.setDisabled(false);
-	};
- 
-	Ext.apply(me, {
-	    store: store,
-	    stateful: false,
-	    viewConfig: {
-		trackOver: false
-	    },
-	    features: [ groupingFeature ],
-	    tbar: [
-		{
-		    text: 'Restore'
 		},
-		remove_btn,
 		{
 		    text: 'Upload',
 		    handler: function() {
@@ -301,8 +283,7 @@ Ext.define('PVE.storage.ContentView', {
 		}
 	    ],
 	    listeners: {
-		show: reload,
-		selectionchange: set_button_status
+		show: reload
 	    }
 	});