admin: allow changing the form category in a popup

wcs/admin/forms.ptl

@@ -272,7 +272,7 @@ class FieldsDirectory(FieldsDirectory):
 
 class FormDefPage(Directory):
     _q_exports = ['', 'fields', 'edit', 'delete', 'duplicate', 'export',
-                  'archive', 'invite', 'enable', 'workflow']
+                  'archive', 'invite', 'enable', 'workflow', 'category']
 
     def __init__(self, component):
         try:
@@ -295,9 +295,16 @@ class FormDefPage(Directory):
         '<div class="bo-block">'
         '<h3>%s</h3>' % _('Access')
         '<ul>'
-        if self.formdef.category:
+        categories = get_categories()
+        if categories:
             '<li>%s ' % _('Category:')
-            '%s</li>' % self.formdef.category.name
+            if self.formdef.category:
+                self.formdef.category.name
+            else:
+                _('None')
+            ' '
+            '(<a href="category" rel="popup">%s</a>)' % _('change')
+            '</li>'
         if self.formdef.workflow:
             '<li>%s ' % _('Workflow:')
             '%s' % self.formdef.workflow.name
@@ -381,7 +388,26 @@ class FormDefPage(Directory):
             '<li><a href="invite">%s</a></li>' % _('Invites')
         '</ul>'
 
+    def category [html] (self):
+        categories = get_categories()
+        form = Form(enctype='multipart/form-data')
+        form.add(SingleSelectWidget, 'category_id',
+                        value=self.formdef.category_id,
+                        options=[(None, '---')] + categories)
+        form.add_submit('submit', _('Submit'))
+        form.add_submit('cancel', _('Cancel'))
+        if form.get_widget('cancel').parse():
+            return redirect('.')
 
+        if not form.is_submitted() or form.has_errors():
+            get_response().breadcrumb.append( ('category', _('Category')) )
+            html_top('forms', title = self.formdef.name)
+            '<p>%s</p>' % _('Select a category for this form')
+            form.render()
+        else:
+            self.formdef.category_id = form.get_widget('category_id').parse()
+            self.formdef.store()
+            redirect('.')
 
     def get_preview [html] (self):
         form = Form()