fixed a caching issue with asynchronous requests in IE. r=igrcic, tschaub (closes #1896)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@8816 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Request.js

@@ -150,7 +150,15 @@ OpenLayers.Request = {
         };
         
         // send request (optionally with data) and return
+        // call in a timeout for asynchronous requests so the return is
+        // available before readyState == 4 for cached docs
+        if(config.async === false) {
             request.send(config.data);
+        } else {
+            window.setTimeout(function(){
+                request.send(config.data);
+            }, 0);
+        }
         return request;
     },
     

tests/Request.html

@@ -20,7 +20,7 @@
     function test_issue(t) {
         setup();
 
-        t.plan(22);
+        t.plan(21);
         var request, config;
         var proto = OpenLayers.Request.XMLHttpRequest.prototype;
         var issue = OpenLayers.Function.bind(OpenLayers.Request.issue,
@@ -127,18 +127,6 @@
         request.readyState = 4;
         request.onreadystatechange();
         
-        // test that send is called with data - 1 test
-        var _send = proto.send;
-        config = {
-            method: "PUT",
-            data: "bling"
-        };
-        proto.send = function(data) {
-            t.eq(data, config.data, "send called with correct data");
-        }
-        request = issue(config);
-        proto.send = _send;
-        
         // test that optional success callback is only called with 200s and
         // failure is only called with non-200s
         var _send = proto.send;
@@ -182,6 +170,29 @@
         teardown();
     }
     
+    function test_delayed_send(t) {
+        t.plan(1);
+        var proto = OpenLayers.Request.XMLHttpRequest.prototype;
+        var _send = proto.send;
+        
+        // test that send is called with data - 1 test
+        var config = {
+            method: "PUT",
+            data: "bling"
+        };
+        var got = {};
+        proto.send = function(data) {
+            got.data = data;
+        }
+        OpenLayers.Request.issue(config);
+        
+        t.delay_call(1, function() {
+            t.eq(got.data, config.data, "proper data sent");
+            proto.send = _send;
+        });        
+        
+    }
+    
     function test_GET(t) {
         t.plan(1);
         var _issue = OpenLayers.Request.issue;