updated ux

lib/pages/task_edit_page.dart

@@ -25,6 +25,9 @@ class _TaskEditPageState extends State<TaskEditPage> {
   final dueDateController = TextEditingController();
   final dueTimeController = TextEditingController();
   late String pageTitle;
+  final dueDateFocusNode = FocusNode();
+  final dueTimeFocusNode = FocusNode();
+  final categoryFocusNode = FocusNode();
 
   @override
   void didChangeDependencies() {
@@ -80,16 +83,15 @@ class _TaskEditPageState extends State<TaskEditPage> {
               TextFormField(
                 controller: descriptionController,
                 decoration: InputDecoration(label: Text('Description')),
-                keyboardType: TextInputType.text,
-                textInputAction: TextInputAction.next,
+                keyboardType: TextInputType.multiline,
+                textInputAction: TextInputAction.newline,
+                minLines: 3,
+                maxLines: 10,
               ),
               TextFormField(
+                focusNode: dueDateFocusNode,
                 controller: dueDateController,
-                onChanged: (value) {
-                  if (dateTimeValidator(value) == null) {}
-
-                  setState(() {});
-                },
+                onFieldSubmitted: (_) => dueDateFocusNode.nextFocus(),
                 decoration: InputDecoration(
                   label: Text('Due Date'),
                   suffix: IconButton(
@@ -97,17 +99,19 @@ class _TaskEditPageState extends State<TaskEditPage> {
                       final result = await onOpenCalendarPickerPressed();
                       if (result != null) {
                         dueDateController.text = getIsoDateString(result);
+                        dueTimeFocusNode.requestFocus();
                       }
-                      setState(() {});
                     },
                     icon: Icon(Icons.calendar_month),
                   ),
                 ),
                 validator: dateTimeValidator,
-                keyboardType: TextInputType.text,
+                keyboardType: TextInputType.datetime,
                 textInputAction: TextInputAction.next,
               ),
               TextFormField(
+                focusNode: dueTimeFocusNode,
+                onFieldSubmitted: (_) => dueTimeFocusNode.nextFocus(),
                 controller: dueTimeController,
                 enabled: DateTime.tryParse(dueDateController.text) != null
                     ? true
@@ -117,10 +121,9 @@ class _TaskEditPageState extends State<TaskEditPage> {
                   suffix: IconButton(
                     onPressed: () async {
                       final result = await onOpenTimePickerPressed();
-                      if (result != null) {
-                        setState(() {
+                      if (result != null && context.mounted) {
                         dueTimeController.text = result.format(context);
-                        });
+                        categoryFocusNode.requestFocus();
                       }
                     },
                     icon: Icon(Icons.schedule),
@@ -131,6 +134,7 @@ class _TaskEditPageState extends State<TaskEditPage> {
                 textInputAction: TextInputAction.next,
               ),
               TextFormField(
+                focusNode: categoryFocusNode,
                 controller: categoryController,
                 decoration: InputDecoration(label: Text('Category')),
                 keyboardType: TextInputType.text,