Extension Docs (No building or testable files)

This adds a warning to extension docs that appears if docs are being viewed in chrome via the file: scheme that view live changes to underlying docs files requires adding a switch to chrome to allow file xhr access

Review URL: http://codereview.chromium.org/997010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@41906 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 24 insertions, 1 deletions

diff --git a/chrome/common/extensions/docs/js/bootstrap.js b/chrome/common/extensions/docs/js/bootstrap.js
index 7741df0..738686e 100755
--- a/chrome/common/extensions/docs/js/bootstrap.js
+++ b/chrome/common/extensions/docs/js/bootstrap.js
@@ -1,9 +1,25 @@
+var fileXHREnabled = function() {
+  var xhr = new XMLHttpRequest();
+  try {
+    xhr.onreadystatechange = function() {};
+    xhr.onerror = function() {};
+    xhr.open("GET", "nothing.xml", true);
+    xhr.send(null);
+  } catch (e) {
+    return false;
+  }
+  
+  xhr.abort();
+  return true;
+}();
+
 // Regenerate page if we are passed the "?regenerate" search param
 // or if the user-agent is chrome AND the document is being served
 // from the file:/// scheme.
 if (window.location.search == "?regenerate" ||
     (navigator.userAgent.indexOf("Chrome") > -1) &&
-    (window.location.href.match("^file:")))    {
+    (window.location.href.match("^file:")) &&
+    fileXHREnabled)    {
   
   // Hide body content initially to minimize flashing.
   document.write('<style id="hider" type="text/css">');
@@ -23,4 +39,11 @@ if (window.location.search == "?regenerate" ||
     if (location.hash.length > 1)
       location.href = location.href;
   }
+} else if ((navigator.userAgent.indexOf("Chrome") > -1) &&
+           (window.location.href.match("^file:")) &&
+            !fileXHREnabled) {
+  window.onload = function() {
+    // Display the warning to use the --allow-file-access-from-files.
+    document.getElementById("devModeWarning").style.display = "block";
+  }
 }