Add feature: dynamic icons

Author: shayanelhami

src/jquery.contextMenu.js

@@ -1076,8 +1076,8 @@ var // currently active contextMenu trigger
 
                     // add icons
                     if (item.icon) {
-                        var icon = ($.isFunction(item.icon)) ? item.icon.call(this, $t, key, item) : item.icon;
-                        $t.addClass("icon icon-" + icon);
+                        item._icon = ($.isFunction(item.icon)) ? item.icon.call(this, $t, key, item) : item.icon;
+                        $t.addClass("icon icon-" + item._icon);
                     }
                 }
 
@@ -1150,6 +1150,11 @@ var // currently active contextMenu trigger
 
                 // dis- / enable item
                 $item[disabled ? 'addClass' : 'removeClass']('disabled');
+
+                if ($.isFunction(item.icon)) {
+                    $item.removeClass("icon-" + item._icon);
+                    $item.addClass("icon-" + item.icon.call(this, $trigger, key, item));
+                }
 
                 if (item.type) {
                     // dis- / enable input elements