Style Dashboard by rules

library/flutter_flow_chart/lib/src/dashboard.dart

@@ -61,6 +61,7 @@ class Dashboard extends ChangeNotifier {
   double widthOffset = 0;
   double heightOffset = 0;
   List<bool Function(Dashboard)> saveRules = [];
+  List<List<ArrowPainter> Function(Dashboard)> arrowStyleRules = [];
   
   String? error;
   
@@ -152,7 +153,9 @@ class Dashboard extends ChangeNotifier {
         map['dashboardSizeWidth'] as double? ?? 0,
         map['dashboardSizeHeight'] as double? ?? 0,
       );
-
+    for (var f in d.arrowStyleRules) {
+      d.arrows = f(d);
+    }
     if (map['gridBackgroundParams'] != null) {
       d.gridBackgroundParams = GridBackgroundParams.fromMap(
         map['gridBackgroundParams'] as Map<String, dynamic>,
@@ -179,6 +182,9 @@ class Dashboard extends ChangeNotifier {
           (x) => ArrowPainter.fromMap(x as Map<String, dynamic>),
         ),
       );
+    for (var f in arrowStyleRules) {
+      arrows = f(this);
+    }
     elements = List<FlowElement>.from(
         (map['elements'] as List<dynamic>).map<FlowElement>(
           (x) => FlowElement.fromMap(this, x as Map<String, dynamic>),
@@ -244,6 +250,9 @@ class Dashboard extends ChangeNotifier {
     for(var el in elements) {
       graph['elements'][el.id] = el.serialize();
     }
+    for (var f in arrowStyleRules) {
+      arrows = f(this);
+    }
     graph['arrows'] = arrows.map((e) => e.serialize()).toList();
     d["id"]=id;
     d["name"]=name;
@@ -322,12 +331,18 @@ class Dashboard extends ChangeNotifier {
 
   void addArrows(ArrowPainter f) {
     arrows.add(f);
+    for (var f in arrowStyleRules) {
+      arrows = f(this);
+    }
     addChange = true;
     saveDash(id);
   }
 
   void removeArrows(bool Function(ArrowPainter) f) {
     arrows.removeWhere((element) => f(element));
+    for (var f in arrowStyleRules) {
+      arrows = f(this);
+    }
     saveDash(id);
   }
 

library/flutter_flow_chart/lib/src/ui/draw_arrow.dart

@@ -352,7 +352,7 @@ class DrawArrowState extends State<DrawArrow> {
             if ( widget.flow.widget.dashboard.arrows.where(
                   (element) => element.fromID == "${widget.srcElement.id}_${widget.index}").isEmpty) {
                 widget.flow.widget.dashboard.addArrows(painter); 
-                widget.flow.widget.dashboard.save!(widget.flow.widget.dashboard.id);
+                widget.flow.widget.dashboard.saveDash(widget.flow.widget.dashboard.id);
             } else {
               var i = widget.flow.widget.dashboard.arrows.indexWhere(
                   (element) => element.fromID == "${widget.srcElement.id}_${widget.index}");