changed name of ui_state.disable_png_cache_until_action_completes to …

…export_svg_action_delayed_for_png_cache, and changed its type from generic Action to ExportSvg, and same with associated variables and props

lib/src/middleware/export_svg.dart

@@ -13,13 +13,13 @@ export_svg_middleware(Store<AppState> store, dynamic action, NextDispatcher next
     var ui_state = store.state.ui_state;
     var dna_sequence_png_uri = ui_state.dna_sequence_png_uri;
     var is_zoom_above_threshold = ui_state.is_zoom_above_threshold;
-    var disable_png_cache_until_action_completes = ui_state.disable_png_cache_until_action_completes;
+    var export_svg_action_delayed_for_png_cache = ui_state.export_svg_action_delayed_for_png_cache;
     var disable_png_caching_dna_sequences = ui_state.disable_png_caching_dna_sequences;
 
     bool using_png_dna_sequence = util.use_png(
       dna_sequence_png_uri,
       is_zoom_above_threshold,
-      disable_png_cache_until_action_completes,
+      export_svg_action_delayed_for_png_cache,
       disable_png_caching_dna_sequences
     );
 

lib/src/reducers/app_ui_state_reducer.dart

@@ -77,7 +77,7 @@ AppUIState ui_state_local_reducer(AppUIState ui_state, action) =>
       ..dna_sequence_png_vertical_offset =
       dna_sequence_vertical_offset_reducer(ui_state.dna_sequence_png_vertical_offset, action)
       ..disable_png_cache_until_action_completes =
-      disable_png_cache_until_action_completes(ui_state.disable_png_cache_until_action_completes, action)
+      disable_png_cache_until_action_completes(ui_state.export_svg_action_delayed_for_png_cache, action)
       ..is_zoom_above_threshold = is_zoom_above_threshold_reducer(ui_state.is_zoom_above_threshold, action));
 
 bool helix_change_apply_to_all_reducer(bool helix_change_apply_to_all, action) {

lib/src/state/app_ui_state.dart

@@ -7,7 +7,7 @@ import 'package:built_value/built_value.dart';
 import 'package:scadnano/src/state/design_side_rotation_data.dart';
 import 'package:scadnano/src/state/modification.dart';
 import 'package:scadnano/src/state/copy_info.dart';
-import '../actions/actions.dart';
+import '../actions/actions.dart' as actions;
 import '../state/local_storage_design_choice.dart';
 
 import 'app_ui_state_storables.dart';
@@ -115,7 +115,7 @@ abstract class AppUIState with BuiltJsonSerializable implements Built<AppUIState
   /// Otherwise, disable png-caching (if a png would otherwise be used)
   /// until action is dispatched.
   @nullable
-  Action get disable_png_cache_until_action_completes;
+  actions.ExportSvg get export_svg_action_delayed_for_png_cache;
 
   /// PNG image should be used (if available) if false.
   bool get is_zoom_above_threshold;

lib/src/util.dart

@@ -1497,10 +1497,10 @@ void svg_to_png_data() {
 /// and the zoom is not above threshold `is_zoom_above_threshold`,
 /// and there is no pending action `disable_png_cache_until_action_completes`.
 bool use_png(String dna_sequence_png_uri, bool is_zoom_above_threshold,
-    actions.Action disable_png_cache_until_action_completes, bool disable_png_caching_dna_sequences) {
+    actions.ExportSvg export_svg_action_delayed_for_png_cache, bool disable_png_caching_dna_sequences) {
   return dna_sequence_png_uri != null &&
       !is_zoom_above_threshold &&
-      disable_png_cache_until_action_completes == null &&
+      export_svg_action_delayed_for_png_cache == null &&
       !disable_png_caching_dna_sequences;
 }
 

lib/src/view/design_main.dart

@@ -70,7 +70,7 @@ UiFactory<DesignMainProps> ConnectedDesignMain = connect<AppState, DesignMainPro
         ..dna_sequence_png_uri = state.ui_state.dna_sequence_png_uri
         ..dna_sequence_png_horizontal_offset = state.ui_state.dna_sequence_png_horizontal_offset
         ..dna_sequence_png_vertical_offset = state.ui_state.dna_sequence_png_vertical_offset
-        ..disable_png_cache_until_action_completes = state.ui_state.disable_png_cache_until_action_completes
+        ..export_svg_action_delayed_for_png_cache = state.ui_state.export_svg_action_delayed_for_png_cache
         ..is_zoom_above_threshold = state.ui_state.is_zoom_above_threshold
         ..only_display_selected_helices = state.ui_state.only_display_selected_helices
         ..display_base_offsets_of_major_ticks = state.ui_state.display_base_offsets_of_major_ticks
@@ -113,7 +113,7 @@ mixin DesignMainPropsMixin on UiProps {
   String dna_sequence_png_uri;
   num dna_sequence_png_horizontal_offset;
   num dna_sequence_png_vertical_offset;
-  actions.Action disable_png_cache_until_action_completes;
+  actions.ExportSvg export_svg_action_delayed_for_png_cache;
   bool is_zoom_above_threshold;
   bool only_display_selected_helices;
   bool helix_change_apply_to_all;
@@ -234,7 +234,7 @@ class DesignMainComponent extends UiComponent2<DesignMainProps> {
           ..dna_sequence_png_horizontal_offset = props.dna_sequence_png_horizontal_offset
           ..dna_sequence_png_vertical_offset = props.dna_sequence_png_vertical_offset
           ..is_zoom_above_threshold = props.is_zoom_above_threshold
-          ..disable_png_cache_until_action_completes = props.disable_png_cache_until_action_completes
+          ..export_svg_action_delayed_for_png_cache = props.export_svg_action_delayed_for_png_cache
           ..only_display_selected_helices = props.only_display_selected_helices
           ..helix_idx_to_svg_position_map = props.helix_idx_to_svg_position_map
           ..disable_png_caching_dna_sequences = props.disable_png_caching_dna_sequences

lib/src/view/design_main_dna_sequences.dart

@@ -29,7 +29,7 @@ mixin DesignMainDNASequencesProps on UiProps {
   num dna_sequence_png_horizontal_offset;
   num dna_sequence_png_vertical_offset;
   bool is_zoom_above_threshold;
-  actions.Action disable_png_cache_until_action_completes;
+  actions.ExportSvg export_svg_action_delayed_for_png_cache;
   bool only_display_selected_helices;
   BuiltMap<int, Point<num>> helix_idx_to_svg_position_map;
   bool disable_png_caching_dna_sequences;
@@ -40,7 +40,7 @@ class DesignMainDNASequencesComponent extends UiComponent2<DesignMainDNASequence
   /// If this prop is not null, then it dispatches the prop action before disabling it.
   @override
   void componentDidUpdate(Map prevProps, Map prevState, [snapshot]) {
-    var action_to_complete = props.disable_png_cache_until_action_completes;
+    var action_to_complete = props.export_svg_action_delayed_for_png_cache;
 
     if (action_to_complete != null) {
       app.dispatch(action_to_complete);
@@ -53,7 +53,7 @@ class DesignMainDNASequencesComponent extends UiComponent2<DesignMainDNASequence
   @override
   render() {
     bool should_use_png_dna_sequence = use_png(props.dna_sequence_png_uri, props.is_zoom_above_threshold,
-        props.disable_png_cache_until_action_completes, props.disable_png_caching_dna_sequences);
+        props.export_svg_action_delayed_for_png_cache, props.disable_png_caching_dna_sequences);
 
     if (should_use_png_dna_sequence) {
       // DNA sequence png.

test/reducer_test.dart

@@ -5555,10 +5555,10 @@ main() {
 
       AppState new_state = app_state_reducer(old_state, SetDisablePngCacheUntilActionCompletes(action));
 
-      expect(new_state.ui_state.disable_png_cache_until_action_completes, action);
+      expect(new_state.ui_state.export_svg_action_delayed_for_png_cache, action);
 
       new_state = app_state_reducer(new_state, SetDisablePngCacheUntilActionCompletes(null));
-      expect(new_state.ui_state.disable_png_cache_until_action_completes, null);
+      expect(new_state.ui_state.export_svg_action_delayed_for_png_cache, null);
     });
   });