sources editor: option to copy settings from other source

src/c3nav/editor/forms.py

@@ -7,6 +7,7 @@ from itertools import chain
 from django.conf import settings
 from django.core.cache import cache
 from django.core.exceptions import FieldDoesNotExist
+from django.core.serializers.json import DjangoJSONEncoder
 from django.db.models import Q
 from django.forms import (BooleanField, CharField, ChoiceField, DecimalField, Form, ModelChoiceField, ModelForm,
                           MultipleChoiceField, Select, ValidationError)
@@ -48,10 +49,24 @@ class EditorFormBase(I18nModelFormMixin, ModelForm):
         if self._meta.model.__name__ == 'Source' and self.request.user.is_superuser:
             Source = self.request.changeset.wrap_model('Source')
 
-            used_names = set(Source.objects.all().values_list('name', flat=True))
+            sources = {s['name']: s for s in Source.objects.all().values('name', 'access_restriction_id',
+                                                                         'left', 'bottom', 'right', 'top')}
+            used_names = set(sources.keys())
             all_names = set(os.listdir(settings.SOURCES_ROOT))
             self.fields['name'].widget = Select(choices=tuple((s, s) for s in sorted(all_names-used_names)))
 
+            if creating:
+                for s in sources.values():
+                    s['access_restriction'] = s['access_restriction_id']
+                    del s['access_restriction_id']
+                self.fields['copy_from'] = ChoiceField(
+                    choices=tuple((('', '---------'), ))+tuple(
+                        (json.dumps(sources[name], separators=(',', ':'), cls=DjangoJSONEncoder), name)
+                        for name in sorted(used_names)
+                    ),
+                    required=False
+                )
+
             self.fields['fixed_x'] = DecimalField(label='fixed x', required=False,
                                                   max_digits=7, decimal_places=3, initial=0)
             self.fields['fixed_y'] = DecimalField(label='fixed y', required=False,
@@ -70,6 +85,8 @@ class EditorFormBase(I18nModelFormMixin, ModelForm):
             self.fields.move_to_end('fixed_y', last=False)
             self.fields.move_to_end('fixed_x', last=False)
             self.fields.move_to_end('access_restriction', last=False)
+            if creating:
+                self.fields.move_to_end('copy_from', last=False)
             self.fields.move_to_end('name', last=False)
 
         if self._meta.model.__name__ == 'AccessRestriction':

src/c3nav/editor/static/editor/js/editor.js

@@ -176,6 +176,7 @@ editor = {
             group.append(content.find('[name=fixed_y]').closest('.form-group'));
 
             content.find('[name=fixed_x], [name=fixed_y]').change(editor._fixed_point_changed).change();
+            content.find('[name=copy_from]').change(editor._copy_from_changed);
 
             group = $('<div class="form-group-group source-wizard">');
             group.insertBefore(content.find('[name=scale_x]').closest('.form-group'));
@@ -509,6 +510,18 @@ editor = {
             editor._fixed_point_layer.addTo(editor.map);
         }
     },
+    _copy_from_changed: function() {
+        var content = $('#sidebar'),
+            value = JSON.parse($(this).val());
+        $(this).val('');
+        if (!confirm('Are you sure you want to copy settings from '+value.name+'?')) return;
+        delete value.name;
+        for (key in value) {
+            content.find('[name='+key+']').val(value[key]);
+        }
+        editor._source_image_calculate_scale();
+        editor._source_image_repositioned();
+    },
 
     // geometries
     geometrystyles: {},