JS: Reduce code for the sparkline behavior

refs #5543

public/js/icinga/behavior/sparkline.js

@@ -2,7 +2,7 @@
 
 (function(Icinga, $) {
 
-    "use strict";
+    'use strict';
 
     Icinga.Behaviors = Icinga.Behaviors || {};
 
@@ -10,45 +10,20 @@
         Icinga.EventListener.call(this, icinga);
         this.on('rendered', this.onRendered, this);
     };
+
     Sparkline.prototype = new Icinga.EventListener();
 
-    Sparkline.prototype.onRendered = function(evt) {
-        var el = evt.target;
-
-        $('.sparkline', el).each(function(i, element) {
-            // read custom options
-            var $spark = $(element);
-            var title  = $spark.attr('title');
-
-            if ($spark.attr('labels')) {
-                $spark.removeAttr('original-title');
-            }
-
-            var options;
-            if ($spark.hasClass('sparkline-perfdata')) {
-                options = {
-                    enableTagOptions: true,
-                    width: 16,
-                    height: 16,
-                    title: title,
-                    disableTooltips: true,
-                    borderWidth: 1.4,
-                    borderColor: '#FFF'
-                };
-                $spark.sparkline('html', options);
-            } else if ($spark.hasClass('sparkline-multi')) {
-                options = {
-                    width: 100,
-                    height: 100,
-                    title: title,
-                    enableTagOptions: true
-                };
-                $spark.sparkline('html', options);
-            }
+    Sparkline.prototype.onRendered = function(e) {
+        var el = e.target;
 
+        $(e.target).find('.sparkline').each(function() {
+            $(this).sparkline('html', {
+                enableTagOptions: true,
+                disableTooltips: true
+            });
         });
     };
 
     Icinga.Behaviors.Sparkline = Sparkline;
 
-}) (Icinga, jQuery);
+})(Icinga, jQuery);