--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/django/contrib/admin/helpers.py	Tue Oct 14 16:00:59 2008 +0000
@@ -0,0 +1,154 @@
+
+from django import forms
+from django.conf import settings
+from django.utils.html import escape
+from django.utils.safestring import mark_safe
+from django.utils.encoding import force_unicode
+from django.contrib.admin.util import flatten_fieldsets
+from django.contrib.contenttypes.models import ContentType
+
+class AdminForm(object):
+    def __init__(self, form, fieldsets, prepopulated_fields):
+        self.form, self.fieldsets = form, fieldsets
+        self.prepopulated_fields = [{
+            'field': form[field_name],
+            'dependencies': [form[f] for f in dependencies]
+        } for field_name, dependencies in prepopulated_fields.items()]
+
+    def __iter__(self):
+        for name, options in self.fieldsets:
+            yield Fieldset(self.form, name, **options)
+
+    def first_field(self):
+        try:
+            fieldset_name, fieldset_options = self.fieldsets[0]
+            field_name = fieldset_options['fields'][0]
+            if not isinstance(field_name, basestring):
+                field_name = field_name[0]
+            return self.form[field_name]
+        except (KeyError, IndexError):
+            pass
+        try:
+            return iter(self.form).next()
+        except StopIteration:
+            return None
+
+    def _media(self):
+        media = self.form.media
+        for fs in self:
+            media = media + fs.media
+        return media
+    media = property(_media)
+
+class Fieldset(object):
+    def __init__(self, form, name=None, fields=(), classes=(), description=None):
+        self.form = form
+        self.name, self.fields = name, fields
+        self.classes = u' '.join(classes)
+        self.description = description
+
+    def _media(self):
+        if 'collapse' in self.classes:
+            return forms.Media(js=['%sjs/admin/CollapsedFieldsets.js' % settings.ADMIN_MEDIA_PREFIX])
+        return forms.Media()
+    media = property(_media)
+
+    def __iter__(self):
+        for field in self.fields:
+            yield Fieldline(self.form, field)
+
+class Fieldline(object):
+    def __init__(self, form, field):
+        self.form = form # A django.forms.Form instance
+        if isinstance(field, basestring):
+            self.fields = [field]
+        else:
+            self.fields = field
+
+    def __iter__(self):
+        for i, field in enumerate(self.fields):
+            yield AdminField(self.form, field, is_first=(i == 0))
+
+    def errors(self):
+        return mark_safe(u'\n'.join([self.form[f].errors.as_ul() for f in self.fields]).strip('\n'))
+
+class AdminField(object):
+    def __init__(self, form, field, is_first):
+        self.field = form[field] # A django.forms.BoundField instance
+        self.is_first = is_first # Whether this field is first on the line
+        self.is_checkbox = isinstance(self.field.field.widget, forms.CheckboxInput)
+
+    def label_tag(self):
+        classes = []
+        if self.is_checkbox:
+            classes.append(u'vCheckboxLabel')
+            contents = force_unicode(escape(self.field.label))
+        else:
+            contents = force_unicode(escape(self.field.label)) + u':'
+        if self.field.field.required:
+            classes.append(u'required')
+        if not self.is_first:
+            classes.append(u'inline')
+        attrs = classes and {'class': u' '.join(classes)} or {}
+        return self.field.label_tag(contents=contents, attrs=attrs)
+
+class InlineAdminFormSet(object):
+    """
+    A wrapper around an inline formset for use in the admin system.
+    """
+    def __init__(self, inline, formset, fieldsets):
+        self.opts = inline
+        self.formset = formset
+        self.fieldsets = fieldsets
+
+    def __iter__(self):
+        for form, original in zip(self.formset.initial_forms, self.formset.get_queryset()):
+            yield InlineAdminForm(self.formset, form, self.fieldsets, self.opts.prepopulated_fields, original)
+        for form in self.formset.extra_forms:
+            yield InlineAdminForm(self.formset, form, self.fieldsets, self.opts.prepopulated_fields, None)
+
+    def fields(self):
+        for field_name in flatten_fieldsets(self.fieldsets):
+            yield self.formset.form.base_fields[field_name]
+
+    def _media(self):
+        media = self.opts.media + self.formset.media
+        for fs in self:
+            media = media + fs.media
+        return media
+    media = property(_media)
+
+class InlineAdminForm(AdminForm):
+    """
+    A wrapper around an inline form for use in the admin system.
+    """
+    def __init__(self, formset, form, fieldsets, prepopulated_fields, original):
+        self.formset = formset
+        self.original = original
+        if original is not None:
+            self.original.content_type_id = ContentType.objects.get_for_model(original).pk
+        self.show_url = original and hasattr(original, 'get_absolute_url')
+        super(InlineAdminForm, self).__init__(form, fieldsets, prepopulated_fields)
+
+    def pk_field(self):
+        return AdminField(self.form, self.formset._pk_field.name, False)
+
+    def deletion_field(self):
+        from django.forms.formsets import DELETION_FIELD_NAME
+        return AdminField(self.form, DELETION_FIELD_NAME, False)
+
+    def ordering_field(self):
+        from django.forms.formsets import ORDERING_FIELD_NAME
+        return AdminField(self.form, ORDERING_FIELD_NAME, False)
+
+class AdminErrorList(forms.util.ErrorList):
+    """
+    Stores all errors for the form/formsets in an add/change stage view.
+    """
+    def __init__(self, form, inline_formsets):
+        if form.is_bound:
+            self.extend(form.errors.values())
+            for inline_formset in inline_formsets:
+                self.extend(inline_formset.non_form_errors())
+                for errors_in_inline_form in inline_formset.errors:
+                    self.extend(errors_in_inline_form.values())