Replace removed `$.browser.mobile`

diff --git a/wcfsetup/install/files/js/WCF.js b/wcfsetup/install/files/js/WCF.js
index a34d32a353ef1385644b7893833b605b50cc4089..5b64b87e32d59b163bb5e55912ebba4caac40948 100755 (executable)
--- a/wcfsetup/install/files/js/WCF.js
+++ b/wcfsetup/install/files/js/WCF.js
@@ -1137,12 +1137,14 @@ WCF.Dropdown.Interactive.Instance = Class.extend({
                
                this._pointer = $('<span class="elementPointer"><span /></span>').appendTo(this._container);
                
-               if (!$.browser.mobile && $itemContainer !== null) {
-                       // use jQuery scrollbar on desktop, mobile browsers have a similar display built-in
-                       $itemContainer.perfectScrollbar({
-                               suppressScrollX: true
-                       });
-               }
+               require(['Environment'], function(Environment) {
+                       if (Environment.platform() !== 'desktop' && $itemContainer !== null) {
+                               // use jQuery scrollbar on desktop, mobile browsers have a similar display built-in
+                               $itemContainer.perfectScrollbar({
+                                       suppressScrollX: true
+                               });
+                       }
+               });
                
                this._container.appendTo(dropdownContainer);
        },
@@ -1249,15 +1251,17 @@ WCF.Dropdown.Interactive.Instance = Class.extend({
         * Rebuilds the desktop scrollbar.
         */
        rebuildScrollbar: function() {
-               if (!$.browser.mobile) {
-                       var $itemContainer = this._itemList.parent();
-                       
-                       // do NOT use 'update', seems to be broken
-                       $itemContainer.perfectScrollbar('destroy');
-                       $itemContainer.perfectScrollbar({
-                               suppressScrollX: true
-                       });
-               }
+               require(['Environment'], function(Environment) {
+                       if (Environment.platform() !== 'desktop') {
+                               var $itemContainer = this._itemList.parent();
+                               
+                               // do NOT use 'update', seems to be broken
+                               $itemContainer.perfectScrollbar('destroy');
+                               $itemContainer.perfectScrollbar({
+                                       suppressScrollX: true
+                               });
+                       }
+               }.bind(this));
        }
 });
 
@@ -6907,7 +6911,13 @@ WCF.Popover = Class.extend({
         * @param       string          selector
         */
        init: function(selector) {
-               if ($.browser.mobile) return;
+               var mobile = false;
+               require(['Environment'], function(Environment) {
+                       if (Environment.platform() !== 'desktop') {
+                               mobile = true;
+                       }
+               }.bind(this));
+               if (mobile) return;
                
                // assign default values
                this._activeElementID = '';