# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1383052620 -3600
# Node ID fe8f6b27c70294d3d1e71821f89f6f9771bb3cd5
# Parent  6a41a849ea6b905f3745c241bff11cec032c59d3
Cache the returned resources, so subsequent requests work locally

diff -r 6a41a849ea6b -r fe8f6b27c702 launcher/http/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java
--- a/launcher/http/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java	Wed Oct 23 15:15:48 2013 +0200
+++ b/launcher/http/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java	Tue Oct 29 14:17:00 2013 +0100
@@ -81,13 +81,25 @@
             Bck2Brwsr.generate(sb, new R());
         }
         sb.append(
-              "(function WrapperVM(global) {"
+              "(function WrapperVM(global) {\n"
+            + "  var cache = {};\n"
             + "  function ldCls(res, skip) {\n"
+            + "    var c = cache[res];\n"
+            + "    if (c) {\n"
+            + "      if (c[skip]) return c[skip];\n"
+            + "      if (c[skip] === null) return null;\n"
+            + "    } else {\n"
+            + "      cache[res] = c = new Array();\n"
+            + "    }\n"
             + "    var request = new XMLHttpRequest();\n"
             + "    request.open('GET', '/classes/' + res + '?skip=' + skip, false);\n"
             + "    request.send();\n"
-            + "    if (request.status !== 200) return null;\n"
+            + "    if (request.status !== 200) {\n"
+            + "      c[skip] = null;\n"
+            + "      return null;\n"
+            + "    }\n"
             + "    var arr = eval('(' + request.responseText + ')');\n"
+            + "    c[skip] = arr;\n"
             + "    return arr;\n"
             + "  }\n"
             + "  var prevvm = global.bck2brwsr;\n"