From 6d5754b04ae094e3a03a55a263367906b0e97fae Mon Sep 17 00:00:00 2001
From: andygup <agup@esri.com>
Date: Tue, 1 Apr 2014 16:15:46 -0600
Subject: [PATCH] this version can be reloaded while offline with minor issues

---
 samples/appcache-tiles.html | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/samples/appcache-tiles.html b/samples/appcache-tiles.html
index b3fb235..cff46c7 100644
--- a/samples/appcache-tiles.html
+++ b/samples/appcache-tiles.html
@@ -73,7 +73,7 @@
     </script>
     <script>
         var map,offlineTileEnabler,baseMapLayer;
-        var globalState;
+        var globalState = {};
         var _wantToCancel;
         var minZoomAdjust = -1, maxZoomAdjust = 1, mMinZoom, mMaxZoom;
         var imgOfflineIndicator,btnGetTiles,btnOnlineOffline,btnZoom;
@@ -221,7 +221,7 @@
                 }
         );
 
-        function saveTilesLocally(evt){
+        function saveTilesLocally(evt,offlineTileEnabler){
             var self = evt.data;
 
             if( globalState.downloadState == 'downloading')
@@ -234,7 +234,7 @@
             {
                 var minLevel = map.getLevel() + minZoomAdjust;
                 var maxLevel = map.getLevel() + maxZoomAdjust;
-                var extent = offlineTileEnabler.getExtentBuffer(this.EXTENT_BUFFER);
+                var extent = offlineTileEnabler.getExtentBuffer(EXTENT_BUFFER,map.extent);
                 _wantToCancel = false;
                 baseMapLayer.prepareForOffline(minLevel, maxLevel, extent, lang.hitch(this,reportProgress));
                 globalState.downloadState = 'downloading';
@@ -276,7 +276,23 @@
                 }
                 else{
                     console.log("success deleting tile cache");
-                    saveTilesLocally(this);
+                    var self = this.data;
+
+                    if( globalState.downloadState == 'downloading')
+                    {
+                        console.log("cancel!");
+                        _wantToCancel = true;
+                        btnGetTiles.innerHTML = "cancelling..";
+                    }
+                    else
+                    {
+                        var minLevel = map.getLevel() + minZoomAdjust;
+                        var maxLevel = map.getLevel() + maxZoomAdjust;
+                        var extent = baseMapLayer.getExtentBuffer(EXTENT_BUFFER,map.extent);
+                        _wantToCancel = false;
+                        baseMapLayer.prepareForOffline(minLevel, maxLevel, extent, reportProgress.bind(this));
+                        globalState.downloadState = 'downloading';
+                    }
                 }
             }.bind(this))
         }