null safety

lib/pages/widgets/length_picker.dart

@@ -10,13 +10,13 @@ const MAX_INC = 50.0;
 const MAX_FEET = 25.0;
 
 class LengthPicker extends StatefulWidget {
-  final TextEditingController controller;
-  final String lableKey;
+  final TextEditingController? controller;
+  final String? lableKey;
   final bool isReadOnly;
   final bool displayFeet;
 
   const LengthPicker(
-      {Key key,
+      {Key? key,
       this.controller,
       this.lableKey,
       this.isReadOnly = false,
@@ -35,14 +35,14 @@ class _LengthPickerState extends State<LengthPicker> {
     super.initState();
     if (widget.controller != null) {
       _setText();
-      widget.controller.addListener(() {
+      widget.controller!.addListener(() {
         _setText();
       });
     }
   }
 
   _setText() {
-    double v = double.parse(widget.controller.text, (s) => 0);
+    double v = double.parse(widget.controller!.text, (s) => 0);
     int _v = v.toInt();
 
     int f = (v / 12).floor();
@@ -72,8 +72,8 @@ class _LengthPickerState extends State<LengthPicker> {
       context: context,
       builder: (BuildContext context) {
         return LengthPickerDialog(
-          controller: widget.controller,
-          labelKey: widget.lableKey,
+          controller: widget.controller!,
+          labelKey: widget.lableKey!,
           displayFeet: widget.displayFeet,
         );
       },
@@ -82,12 +82,12 @@ class _LengthPickerState extends State<LengthPicker> {
 }
 
 class LengthPickerDialog extends StatefulWidget {
-  final TextEditingController controller;
-  final String labelKey;
-  final bool displayFeet;
+  final TextEditingController? controller;
+  final String? labelKey;
+  final bool? displayFeet;
 
   const LengthPickerDialog(
-      {Key key, this.controller, this.labelKey, this.displayFeet})
+      {Key? key, this.controller, this.labelKey, this.displayFeet})
       : super(key: key);
 
   @override
@@ -95,8 +95,8 @@ class LengthPickerDialog extends StatefulWidget {
 }
 
 class _LengthPickerDialogState extends State<LengthPickerDialog> {
-  int _valueFeet;
-  int _valueInc;
+  late int _valueFeet;
+  late int _valueInc;
   TextEditingController inchInputController = TextEditingController();
   TextEditingController feetInputController = TextEditingController();
   final _focusNode = FocusNode();
@@ -107,9 +107,9 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
     _valueFeet = 0;
     _valueInc = 0;
     if (widget.controller != null) {
-      double v = double.parse(widget.controller.text, (s) => 0);
+      double v = double.parse(widget.controller!.text, (s) => 0);
       _valueFeet = (v / 12).floor();
-      _valueInc = widget.displayFeet ? (v % 12).toInt() : v.toInt();
+      _valueInc = widget.displayFeet! ? (v % 12).toInt() : v.toInt();
       inchInputController.text = _valueInc.toString();
       feetInputController.text = _valueFeet.toString();
     }
@@ -144,7 +144,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
                     borderSide: BorderSide(color: primaryColor, width: 1.0),
                   ),
                   enabledBorder: OutlineInputBorder(
-                    borderSide: BorderSide(color: Colors.grey[400], width: 1.0),
+                    borderSide: BorderSide(color: Colors.grey.shade400, width: 1.0),
                   ),
                 ),
               ),
@@ -196,7 +196,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
                     borderSide: BorderSide(color: primaryColor, width: 1.0),
                   ),
                   enabledBorder: OutlineInputBorder(
-                    borderSide: BorderSide(color: Colors.grey[400], width: 1.0),
+                    borderSide: BorderSide(color: Colors.grey.shade400, width: 1.0),
                   ),
                 ),
               ),
@@ -233,14 +233,14 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
       title: Center(
           child: LocalText(
         context,
-        widget.labelKey,
+        widget.labelKey!,
         color: primaryColor,
         fontSize: 16,
       )),
       children: [
         Row(
           mainAxisAlignment: MainAxisAlignment.spaceAround,
-          children: widget.displayFeet
+          children: widget.displayFeet!
               ? [
                   Container(width: 100, child: feetBox),
                   Container(width: 100, child: inchBox),
@@ -252,7 +252,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
         SizedBox(
           height: 10,
         ),
-        widget.displayFeet
+        widget.displayFeet!
             ? Column(
                 crossAxisAlignment: CrossAxisAlignment.start,
                 children: [
@@ -295,11 +295,11 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
             ),
             Slider(
               activeColor: primaryColor,
-              value: _valueInc.toDouble() > (widget.displayFeet ? 11 : MAX_INC)
+              value: _valueInc.toDouble() > (widget.displayFeet! ? 11 : MAX_INC)
                   ? 0
                   : _valueInc.toDouble(),
               min: 0,
-              max: widget.displayFeet ? 11 : MAX_INC,
+              max: widget.displayFeet! ? 11 : MAX_INC,
               divisions: 100,
               label: (_valueInc ?? 0).round().toString(),
               onChanged: (double v) {
@@ -318,10 +318,10 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
     });
     int _v = _valueInc.round() + _valueFeet.round() * 12;
     if (widget.controller != null) {
-      widget.controller.text = _v.toString();
+      widget.controller!.text = _v.toString();
     }
     feetInputController.text =
-        widget.displayFeet ? _valueFeet.round().toString() : _v.toString();
+        widget.displayFeet! ? _valueFeet.round().toString() : _v.toString();
   }
 
   _updateInc(double v) {
@@ -330,8 +330,8 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
     });
     int _v = _valueInc.round() + _valueFeet.round() * 12;
     if (widget.controller != null) {
-      widget.controller.text =
-          widget.displayFeet ? _v.toString() : _valueInc.toString();
+      widget.controller!.text =
+          widget.displayFeet! ? _v.toString() : _valueInc.toString();
     }
     inchInputController.text = _valueInc.toString();
   }
@@ -343,8 +343,8 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
     });
     int _v = _valueInc.round() + _valueFeet.round() * 12;
     if (widget.controller != null) {
-      widget.controller.text =
-          widget.displayFeet ? _v.toString() : _valueInc.toString();
+      widget.controller!.text =
+          widget.displayFeet! ? _v.toString() : _valueInc.toString();
     }
   }
 
@@ -355,7 +355,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
     });
     int _v = _valueInc.round() + _valueFeet.round() * 12;
     if (widget.controller != null) {
-      widget.controller.text = _v.toString();
+      widget.controller!.text = _v.toString();
     }
   }