improve loading, preserve scroll position on collection view

1 files changed, 17 insertions, 0 deletions

diff --git a/StoneIsland/www/js/lib/view/Scrollable.js b/StoneIsland/www/js/lib/view/Scrollable.js
index 0baff845..7f90929a 100755
--- a/StoneIsland/www/js/lib/view/Scrollable.js
+++ b/StoneIsland/www/js/lib/view/Scrollable.js
@@ -5,9 +5,26 @@ var ScrollableView = View.extend({
   },
 
   deferScrollToTop: function(){
+    this.scrollPosition = 0
     setTimeout(this.scrollToTop.bind(this), 0)
   },
   
+  scrollPosition: 0,
+  
+  resetScroll: function(){
+    this.scrollPosition = 0
+  },
+  
+  saveScroll: function(){
+    this.scrollPosition = this.scroller.y
+  },
+  
+  restoreScroll: function(){
+    setTimeout(function(){
+      this.scroller.scrollTo(0, this.scrollPosition)
+    }.bind(this), 0)
+  },
+  
   refreshScroller: function(){
     this.scroller.refresh()
     clearTimeout( this.scrollerRefreshTimeout )