[IMP] web: add methods show_error() and hide_error() in instance.web.Login

bzr revid: rco@openerp.com-20120926095004-bl7xsg9d376uhwop

addons/web/static/src/js/chrome.js

@@ -579,7 +579,7 @@ instance.web.Login =  instance.web.Widget.extend({
      */
     do_login: function (db, login, password) {
         var self = this;
-        this.$el.removeClass('oe_login_invalid');
+        self.hide_error();
         self.$(".oe_login_pane").fadeOut("slow");
         return this.session.session_authenticate(db, login, password).pipe(function() {
             if (self.has_local_storage) {
@@ -596,12 +596,19 @@ instance.web.Login =  instance.web.Widget.extend({
                 }
             }
             self.trigger('login_successful');
-        },function () {
+        }, function () {
             self.$(".oe_login_pane").fadeIn("fast", function() {
-                self.$el.addClass("oe_login_invalid");
+                self.show_error("Invalid username or password");
             });
         });
     },
+    show_error: function(message) {
+        this.$el.addClass("oe_login_invalid");
+        this.$(".oe_login_error_message").text(message);
+    },
+    hide_error: function() {
+        this.$el.removeClass('oe_login_invalid');
+    },
 });
 instance.web.client_actions.add("login", "instance.web.Login");
 

addons/web/static/src/xml/base.xml

@@ -61,7 +61,7 @@
 <t t-name="Login">
     <div class="oe_login">
         <div class="oe_login_bottom"> </div>
-        <div class="oe_login_error_message">Invalid username or password</div>
+        <div class="oe_login_error_message"/>
         <div class="oe_login_pane">
             <div class="oe_login_logo"><img src='/web/static/src/img/logo2.png'/></div>
             <form action="" method="post">