wtforms_field.diff

diff --git a/indico/web/forms/widgets.py b/indico/web/forms/widgets.py
index 8c40bf3..fa7a5a0 100644
--- a/indico/web/forms/widgets.py
+++ b/indico/web/forms/widgets.py
@@ -16,6 +16,7 @@
 
 from flask import render_template
 from wtforms.widgets.core import HTMLString, PasswordInput
+from wtforms.validators import Length
 
 
 class ConcatWidget(object):
@@ -64,7 +65,18 @@ class PasswordWidget(object):
 
     single_line = True
 
+    def attrs_for_validators(self, validators):
+        attrs = {}
+        for validator in validators:
+            if isinstance(validator, Length):
+                if validator.min >= 0:
+                    attrs['minlength'] = validator.min
+                if validator.max >= 0:
+                    attrs['maxlength'] = validator.max
+        return attrs
+
     def __call__(self, field, **kwargs):
+        kwargs.update(self.attrs_for_validators(field.validators))
         return HTMLString(render_template('forms/password_widget.html', field=field,
                           input=PasswordInput(hide_value=False), input_args=kwargs))
 
diff --git a/indico/web/templates/forms/password_widget.html b/indico/web/templates/forms/password_widget.html
index 2c1ee9f..e4ded73 100644
--- a/indico/web/templates/forms/password_widget.html
+++ b/indico/web/templates/forms/password_widget.html
@@ -1,7 +1,8 @@
 <div class="form-row i-password {%- if field.toggle %} toggle {%- endif -%}">
     {{ input(field, **input_args) }}
     {%- if field.toggle -%}
-        <button id="{{ field.id }}-button" type="button" class="i-button icon-eye"></button>
+        <button id="{{ field.id }}-button" type="button" class="i-button icon-eye-blocked"
+                title="{% trans %}Click to toggle visibility of password{% endtrans %}"></button>
     {% endif %}
 </div>
 {%- if field.toggle -%}