fixed nullable mess with editor ids

lib/models/project.dart

@@ -6,10 +6,10 @@ class Project {
   String name;
   String language;
   File path;
-  String? e0;
-  String? e1;
-  String? e2;
-  String? e3;
+  String e0;
+  String e1;
+  String e2;
+  String e3;
   bool isGit;
 
   Project(
@@ -17,10 +17,10 @@ class Project {
     this.language,
     this.path,
     this.isGit, {
-    this.e0 = null,
-    this.e1 = null,
-    this.e2 = null,
-    this.e3 = null,
+    this.e0 = "",
+    this.e1 = "",
+    this.e2 = "",
+    this.e3 = "",
   });
 
   factory Project.newValidated(String name, String lang, String path) {
@@ -43,27 +43,19 @@ class Project {
       "language": language,
       "path": path.path,
       "isGit": isGit,
+      "e0": e0,
+      "e1": e1,
+      "e2": e2,
+      "e3": e3,
     };
-    if (e0 == null) {
-      fin["e0"] = e0;
-    }
-    if (e1 == null) {
-      fin["e1"] = e1;
-    }
-    if (e2 == null) {
-      fin["e2"] = e2;
-    }
-    if (e3 == null) {
-      fin["e3"] = e3;
-    }
     return fin;
   }
 
-  factory Project.fromJson(Map<String, dynamic> data) {
-    final String? e0 = data["e0"];
-    final String? e1 = data["e1"];
-    final String? e2 = data["e2"];
-    final String? e3 = data["e3"];
+  factory Project.fromJson(Map<String, dynamic> data, List<String> editorList) {
+    final String e0 = editorList.contains(data["e0"]) ? data["e0"] : "";
+    final String e1 = editorList.contains(data["e1"]) ? data["e1"] : "";
+    final String e2 = editorList.contains(data["e2"]) ? data["e2"] : "";
+    final String e3 = editorList.contains(data["e3"]) ? data["e3"] : "";
     return Project(
       data["name"] as String,
       data["language"] as String,
@@ -76,7 +68,7 @@ class Project {
     );
   }
 
-  String? getEditor(enumb) {
+  String getEditor(int enumb) {
     switch (enumb) {
       case 0:
         return e0;
@@ -87,12 +79,11 @@ class Project {
       case 3:
         return e3;
       default:
-        return null;
-        break;
+        return "";
     }
   }
 
-  void setEditor(int enumb, String? edt) {
+  void setEditor(int enumb, String edt) {
     switch (enumb) {
       case 0:
         e0 = edt;