From 70b02b12d39fec290439ee38daabc26de4cf450f Mon Sep 17 00:00:00 2001
From: Petr Skoda <commits@skodak.org>
Date: Sun, 10 Jul 2011 16:40:56 +0200
Subject: [PATCH] MDL-23344 fix login form focus

---
 lib/javascript-static.js | 28 ++++++++++++++++++++++++++++
 login/index.php          |  2 ++
 2 files changed, 30 insertions(+)

diff --git a/lib/javascript-static.js b/lib/javascript-static.js
index 5e06bc27f9d..8b12d66adf8 100644
--- a/lib/javascript-static.js
+++ b/lib/javascript-static.js
@@ -723,6 +723,34 @@ M.util.get_string = function(identifier, component, a) {
     return stringvalue;
 };
 
+/**
+ * Set focus on username or password field of the login form
+ */
+M.util.focus_login_form = function(Y) {
+    var username = Y.one('#username');
+    var password = Y.one('#password');
+
+    if (username == null || password == null) {
+        // something is wrong here
+        return;
+    }
+
+    var curElement = document.activeElement
+    if (curElement == 'undefined') {
+        // legacy browser - skip refocus protection
+    } else if (curElement.tagName == 'INPUT') {
+        // user was probably faster to focus something, do not mess with focus
+        return;
+    }
+
+    if (username.get('value') == '') {
+        username.focus();
+    } else {
+        password.focus();
+    }
+}
+
+
 //=== old legacy JS code, hopefully to be replaced soon by M.xx.yy and YUI3 code ===
 
 function checkall() {
diff --git a/login/index.php b/login/index.php
index b0791ed5bf1..e0295969d88 100644
--- a/login/index.php
+++ b/login/index.php
@@ -327,6 +327,8 @@ if (isloggedin() and !isguestuser()) {
     echo $OUTPUT->box_end();
 } else {
     include("index_form.html");
+    //focus username or password
+    $PAGE->requires->js_init_call('M.util.focus_login_form', null, true);
 }
 
 echo $OUTPUT->footer();
-- 
2.43.0