add inline editing for mail address targets

- move active flag into managemails.models.ActivateAbleMixin
- refactor Mailbox and Mailaddress to use ActivateAbleMixin
- implement managemails.models.Mailbox.__str__
- add managemails.admin.ActivationChangeMixin to provide activate and
  deactivate actions for model admin classes
- add activate and deactivate actions for managemails.admin.MailboxAdmin
- add managemails.admin.MailAddressAdmin and inlines for MailAddressMailbox and
  MailAddressForward management on the MailAddress management admin page

gnuviechadmin/managemails/admin.py

@@ -5,9 +5,11 @@ from django.forms.util import flatatt
 from django.utils.translation import ugettext as _
 
 from .models import (
+    MailAddress,
+    MailAddressForward,
+    MailAddressMailbox,
     MailDomain,
     Mailbox,
-    MailAddress
 )
 
 PASSWORD_MISMATCH_ERROR = _("Passwords don't match")
@@ -89,7 +91,18 @@ class MailboxChangeForm(forms.ModelForm):
         return self.initial['password']
 
 
-class MailboxAdmin(admin.ModelAdmin):
+class ActivationChangeMixin(object):
+    def activate(self, request, queryset):
+        queryset.update(active=True)
+
+    def deactivate(self, request, queryset):
+        queryset.update(active=False)
+
+    activate.short_description = _('Activate')
+    deactivate.short_description = _('Deactivate')
+
+
+class MailboxAdmin(ActivationChangeMixin, admin.ModelAdmin):
     """
     Custom admin page for mailboxes.
 
@@ -97,6 +110,8 @@ class MailboxAdmin(admin.ModelAdmin):
     form = MailboxChangeForm
     add_form = MailboxCreationForm
 
+    actions = ['activate', 'deactivate']
+
     list_display = ('username', 'active')
     list_filter = ('active',)
     fieldsets = (
@@ -134,6 +149,23 @@ class MailboxAdmin(admin.ModelAdmin):
         return super(MailboxAdmin, self).get_form(request, obj, **defaults)
 
 
+class MailAddressMailboxInline(admin.TabularInline):
+    model = MailAddressMailbox
+
+
+class MailAddressForwardInline(admin.TabularInline):
+    model = MailAddressForward
+
+
+class MailAddressAdmin(ActivationChangeMixin, admin.ModelAdmin):
+    actions = ['activate', 'deactivate']
+
+    list_display = ('__str__', 'active')
+    list_filter = ('active',)
+
+    inlines = [MailAddressMailboxInline, MailAddressForwardInline]
+
+
 admin.site.register(MailDomain)
 admin.site.register(Mailbox, MailboxAdmin)
-admin.site.register(MailAddress)
+admin.site.register(MailAddress, MailAddressAdmin)