from django.contrib import admin

from django.contrib.admin.options import IncorrectLookupParameters

from django.contrib.admin.views.main import ChangeList

from django.template import Context, Template

from django.test import TransactionTestCase

from regressiontests.admin_changelist.models import Child, Parent

class ChangeListTests(TransactionTestCase):

    def test_select_related_preserved(self):

        """

        Regression test for #10348: ChangeList.get_query_set() shouldn't

        overwrite a custom select_related provided by ModelAdmin.queryset().

        """

        m = ChildAdmin(Child, admin.site)

        cl = ChangeList(MockRequest(), Child, m.list_display, m.list_display_links,

                m.list_filter, m.date_hierarchy, m.search_fields,

                m.list_select_related, m.list_per_page, m.list_editable, m)

        self.assertEqual(cl.query_set.query.select_related, {'parent': {'name': {}}})

    def test_result_list_html(self):

        """

        Verifies that inclusion tag result_list generates a table when with

        default ModelAdmin settings.

        """

        new_parent = Parent.objects.create(name='parent')

        new_child = Child.objects.create(name='name', parent=new_parent)

        request = MockRequest()

        m = ChildAdmin(Child, admin.site)

        cl = ChangeList(request, Child, m.list_display, m.list_display_links,

                m.list_filter, m.date_hierarchy, m.search_fields,

                m.list_select_related, m.list_per_page, m.list_editable, m)

        cl.formset = None

        template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')

        context = Context({'cl': cl})

        table_output = template.render(context)

        row_html = '<tbody><tr class="row1"><td><input type="checkbox" class="action-select" value="1" name="_selected_action" /></td><th><a href="1/">name</a></th><td>Parent object</td></tr></tbody>'

        self.assertFalse(table_output.find(row_html) == -1,

            'Failed to find expected row element: %s' % table_output)

    def test_result_list_editable_html(self):

        """

        Regression tests for #11791: Inclusion tag result_list generates a

        table and this checks that the items are nested within the table

        element tags.

        Also a regression test for #13599, verifies that hidden fields

        when list_editable is enabled are rendered in a div outside the

        table.

        """

        new_parent = Parent.objects.create(name='parent')

        new_child = Child.objects.create(name='name', parent=new_parent)

        request = MockRequest()

        m = ChildAdmin(Child, admin.site)

        # Test with list_editable fields

        m.list_display = ['id', 'name', 'parent']

        m.list_display_links = ['id']

        m.list_editable = ['name']

        cl = ChangeList(request, Child, m.list_display, m.list_display_links,

                m.list_filter, m.date_hierarchy, m.search_fields,

                m.list_select_related, m.list_per_page, m.list_editable, m)

        FormSet = m.get_changelist_formset(request)

        cl.formset = FormSet(queryset=cl.result_list)

        template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')

        context = Context({'cl': cl})

        table_output = template.render(context)

        # make sure that hidden fields are in the correct place

        hiddenfields_div = '<div class="hiddenfields"><input type="hidden" name="form-0-id" value="1" id="id_form-0-id" /></div>'

        self.assertFalse(table_output.find(hiddenfields_div) == -1,

            'Failed to find hidden fields in: %s' % table_output)

        # make sure that list editable fields are rendered in divs correctly

        editable_name_field = '<input name="form-0-name" value="name" class="vTextField" maxlength="30" type="text" id="id_form-0-name" />'

        self.assertFalse('<td>%s</td>' % editable_name_field == -1,

            'Failed to find "name" list_editable field in: %s' % table_output)

    def test_result_list_editable(self):

        """

        Regression test for #14312: list_editable with pagination

        """

        new_parent = Parent.objects.create(name='parent')

        for i in range(200):

            new_child = Child.objects.create(name='name %s' % i, parent=new_parent)

        request = MockRequest()

        request.GET['p'] = -1 # Anything outside range

        m = ChildAdmin(Child, admin.site)

        # Test with list_editable fields

        m.list_display = ['id', 'name', 'parent']

        m.list_display_links = ['id']

        m.list_editable = ['name']

        self.assertRaises(IncorrectLookupParameters, lambda: \

            ChangeList(request, Child, m.list_display, m.list_display_links,

                    m.list_filter, m.date_hierarchy, m.search_fields,

                    m.list_select_related, m.list_per_page, m.list_editable, m))

class ChildAdmin(admin.ModelAdmin):

    list_display = ['name', 'parent']

    def queryset(self, request):

        return super(ChildAdmin, self).queryset(request).select_related("parent__name")

class MockRequest(object):

    GET = {}