misc: add device geolocation as initial position for markers map (#89641)

tests/form_pages/test_item_field.py

@@ -1396,6 +1396,29 @@ def test_form_item_dynamic_map_data_source(pub, http_requests):
     assert len(resp_geojson.json['features']) == 2
 
 
+def test_form_item_map_data_source_initial_position(pub, http_requests):
+    NamedDataSource.wipe()
+    data_source = NamedDataSource(name='foobar')
+    data_source.data_source = {
+        'type': 'geojson',
+        'value': 'http://remote.example.net/geojson',
+    }
+    data_source.id_property = 'id'
+    data_source.label_template_property = '{{ text }}'
+    data_source.cache_duration = '5'
+    data_source.store()
+
+    formdef = create_formdef()
+    formdef.fields = [
+        fields.ItemField(id='1', label='map', display_mode='map', initial_position='geoloc'),
+    ]
+    formdef.store()
+    formdef.data_class().wipe()
+    app = get_app(pub)
+    resp = app.get('/test/')
+    assert resp.pyquery('[data-init_with_geoloc="true"]')
+
+
 def test_form_item_timetable_data_source(pub, http_requests):
     NamedDataSource.wipe()
     data_source = NamedDataSource(name='foobar')

wcs/fields/item.py

@@ -613,6 +613,7 @@ class ItemField(WidgetField, MapOptionsMixin, ItemFieldMixin, ItemWithImageField
             title=_('Initial Position'),
             options=(
                 ('', _('Default position (from markers)'), ''),
+                ('geoloc', _('Device geolocation'), 'geoloc'),
                 ('template', _('From template'), 'template'),
             ),
             value=self.initial_position or '',