support for delayed opening. css changes

abot.py

@@ -43,12 +43,14 @@ def preview(key):
         return render_template('blank.html', message = "Error creating form")
     if not is_draft(form):
         return render_template('blank.html', message = "Preview not enabled")
-    valid_for = time_to_expiry(form)
+    valid_for = time_to('expires', form)
+    opens = time_to('opens', form)
     return render_template(
         'preview.html',
         key = key,
         form = form,
-        valid_for = valid_for
+        valid_for = valid_for,
+        opens = opens
     )
 
 
@@ -62,14 +64,19 @@ def vote(key, token = None):
         return render_template('blank.html', message = "Error creating form")
     if is_draft(form):
         return render_template('blank.html', message = "Not published")
-    if is_expired(form):
-        return render_template('blank.html', message = "Voting has closed")
     if is_closed_vote(form):
         if not is_voter(key, token):
             return render_template('blank.html', message = "Token invalid")
         if has_voted(key, token):
-            return render_template('blank.html', message = "Token already used")
-    valid_for = time_to_expiry(form)
+            form['can_submit'] = False
+            form['message'] = 'Token used. Can not submit anymore'
+    if not is_opened(form):
+        return render_template('blank.html', message = "Voting is not open yet. Opens at " + time_to('opens', form))
+
+    if is_expired(form):
+        form['can_submit'] = False
+        form['message'] = 'Voting has closed. Can not submit anymore'
+    valid_for = time_to('expires', form)
 
     return render_template(
         'vote.html',
@@ -98,6 +105,9 @@ def save_vote():
             return render_template('blank.html', message = "Token invalid")
         if has_voted(key, token):
             return render_template('blank.html', message = "Token already used")
+    if not is_opened(form):
+        return render_template('blank.html', message = "Voting is not open yet. Opens at " + time_to('opens', form))
+
 
     write_vote(key, token, request.form, form) # using request.
     tokens = False