Porting ppapi_tests framework to postMessage.

ppapi/tests/test_case.html

Index: ppapi/tests/test_case.html
diff --git a/ppapi/tests/test_case.html b/ppapi/tests/test_case.html
index 89bf1b691b8d78286c1a2482b5c916a430704296..1d395fe4bf4bf1031711d9009bb9fc6638c35e87 100644
--- a/ppapi/tests/test_case.html
+++ b/ppapi/tests/test_case.html
@@ -66,6 +66,67 @@ function ExtractSearchParameter(name) {
   return "";
 }
 
+// Parses the message, looking for strings of the form:
+// TESTING_MESSAGE:<message_type>:<message_contents>
+//
+// If the message_data is not a string or does not match the above format, then
+// undefined is returned.
+//
+// Otherwise, returns an array containing 2 items. The 0th element is the
+// message_type, one of:
+//  - ClearContents
+//  - DidExecuteTests
+//  - LogHTML
+//  - SetCookie
+// The second item is the verbatim message_contents.
+function ParseTestingMessage(message_data) {
+  if (typeof(message_data)!='string')
+    return undefined;
+  var testing_message_prefix = "TESTING_MESSAGE";
+  var delim_str = ":";
+  var delim1 = message_data.indexOf(delim_str);

[cstefansen, 2011/07/07 18:03:09]

Consider using split() - it would simplify this code.

[dmichael (off chromium), 2011/07/07 21:17:59]

I wanted to do that, but it doesn't quite have the behavior I need. I want to
ensure that the 'message_content' part stays in-tact if there are any colons in
it. split also doesn't have the right semantics for my needs if I provide the
optional split limit.

+  if (message_data.substring(0, delim1) !== testing_message_prefix)
+    return undefined;
+  var delim2 = message_data.indexOf(delim_str, delim1 + 1);
+  if (delim2 == -1)
+    delim2 = message_data.length;
+  var message_type = message_data.substring(delim1 + 1, delim2);
+  var message_contents = message_data.substring(delim2 + 1);
+  return [message_type, message_contents];
+}
+
+function ClearConsole() {
+  window.document.getElementById("console").innerHTML = "";
+}
+
+function LogHTML(html) {
+  window.document.getElementById("console").innerHTML += html;
+}
+
+function SetCookie(key_value_string) {
+  window.document.cookie = key_value_string + "; path=/";
+}
+
+function IsTestingMessage(message_data) {
+  return (ParseTestingMessage(message_data) != undefined);
+}
+
+function handleTestingMessage(message_event) {
+  var type_contents_tuple = ParseTestingMessage(message_event.data);
+  if (type_contents_tuple) {
+    var type = type_contents_tuple[0];
+    var contents = type_contents_tuple[1];
+    if (type === "ClearConsole")
+      ClearConsole();
+    else if (type === "DidExecuteTests")
+      DidExecuteTests();
+    else if (type === "LogHTML")
+      LogHTML(contents);
+    else if (type === "SetCookie")
+      SetCookie(contents);
+  }
+}
+
 onload = function() {
   var testcase = ExtractSearchParameter("testcase");
   var mode = ExtractSearchParameter("mode");
@@ -91,7 +152,10 @@ onload = function() {
   if (obj) {
     obj.setAttribute("id", "plugin");
     obj.setAttribute("testcase", testcase);
-    document.getElementById("container").appendChild(obj);
+    obj.setAttribute("protocol", window.location.protocol);
+    var container = document.getElementById("container");
+    container.appendChild(obj);
+    container.addEventListener("message", handleTestingMessage, true);
   }
 }
 </script>