Commit 11ef5df

@@ -1,208 +0,0 @@
-import 'dart:math';
-
-import 'package:blood_pressure_app/components/fullscreen_dialoge.dart';
-import 'package:flutter/material.dart';
-import 'package:flutter_gen/gen_l10n/app_localizations.dart';
-
-/// Generic multilayered fullscreen dialoge for nesting string selections.
-///
-/// Unlike other dialoges this doesn't drop the scope by default and needs users
-/// to implement it in the [onSaved] attribute.
-// TODO: consider making this a abstract class and require implementation.
-class TreeSelectionDialoge extends StatefulWidget {
-  /// Create a multilayered string selection dialoge.
-  const TreeSelectionDialoge({super.key,
-    required this.buildTitle,
-    required this.buildOptions,
-    required this.bottomAppBars,
-    this.validator,
-    required this.onSaved,
-  });
-
-  /// Builder for currently visible options.
-  ///
-  /// Should return currently visible options or close the dialoge. The
-  /// `madeSelections` parameter contains all selections the user already made
-  /// in the order in which they were made.
-  ///
-  /// **Tip:** use `madeSelections.length` to obtain the current depth.
-  ///
-  /// Guaranteed to be called after every selection.
-  final List<String> Function(List<String> madeSelections) buildOptions;
-
-  /// Builds a title that tells users what to this selection is about.
-  ///
-  /// Behaves like [buildOptions].
-  final String Function(List<String> madeSelections) buildTitle;
-
-  /// Validates selections and returns errors.
-  ///
-  /// Invoked manually by the user.
-  ///
-  /// When this function returns a string saving is not possible and the string
-  /// will be shown to the user. When this function returns null or is null the
-  /// the [onSaved] callback will be called.
-  final String? Function(List<String> madeSelections)? validator;
-
-  /// Stores form state after [validator] pass.
-  ///
-  /// This function is responsible to prepare the form response for further use
-  /// and to pop the scope.
-  final void Function(List<String> madeSelections) onSaved;
-
-  // TODO: check mutability of passed arguments
-
-  /// Whether to move the app bar for saving and loading to the bottom of the
-  /// screen.
-  final bool bottomAppBars;
-
-  @override
-  State<TreeSelectionDialoge> createState() => _TreeSelectionDialogeState();
-}
-
-class _TreeSelectionDialogeState extends State<TreeSelectionDialoge>
-    with TickerProviderStateMixin {
-  /// Selections the user already made.
-  final _selections = <String>[];
-
-  /// Error to display.
-  String? _error;
-
-  /// Visible elements from last build.
-  List<String>? _lastItems;
-  
-  /// Index of the last selected item
-  int? _lastSelectedIdx;
-
-  late final AnimationController _controller;
-
-  @override
-  void initState() {
-    super.initState();
-    _controller = AnimationController(
-      vsync: this,
-      duration: const Duration(milliseconds: 100),
-    );
-  }
-
-
-  @override
-  void dispose() {
-    _controller.dispose();
-    super.dispose();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    final localizations = AppLocalizations.of(context)!;
-    final items = widget.buildOptions(_selections);
-    _controller.reset();
-    _controller.forward();
-    return PopScope(
-      canPop: _selections.isEmpty,
-      onPopInvoked: (didPop) {
-        if (!didPop) {
-          setState(_selections.removeLast);
-        }
-      },
-      child: FullscreenDialoge(
-        onActionButtonPressed: () {
-          setState(() {
-            _error = widget.validator?.call(_selections);
-          });
-          if (_error != null) {
-            return;
-          }
-          widget.onSaved(_selections);
-        },
-        actionButtonText: localizations.btnSave,
-        bottomAppBar: widget.bottomAppBars,
-        body: _buildOptions(items),
-      ),
-    );
-  }
-  
-  Widget _buildOptions(List<String> items) => Column(
-    mainAxisSize: MainAxisSize.min,
-    children: [
-      Expanded(
-        child: ListView.builder(
-          shrinkWrap: true,
-          itemCount: max(_lastItems?.length ?? 0, items.length) + 1,
-          itemBuilder: (context, idx) => (idx == 0)
-              ? ListTile(
-                title: Text(widget.buildTitle(_selections)),
-                titleTextStyle: Theme.of(context).textTheme.headlineSmall,
-              )
-              : UnconstrainedBox(
-                clipBehavior: Clip.hardEdge,
-                child: TweenAnimationBuilder(
-                  key: UniqueKey(),
-                  duration: Duration(milliseconds: 400 + 100 * idx), // interacts with LineChart duration property
-                  tween: Tween<double>(begin: -0.25, end: 0.25),
-                  curve: Curves.easeInOutCirc,
-                  builder: (BuildContext context, double value, child) {
-                    Material.of(context).markNeedsPaint();
-                    return FractionalTranslation(
-                      translation: Offset(value, 0.0),
-                      child: Container(
-                        width: MediaQuery.of(context).size.width * 2,
-                        padding: const EdgeInsets.only(top: 10),
-                        child: Row(
-                          mainAxisSize: MainAxisSize.min,
-                          children: [
-                            // New tiles replace old ones:
-                            SizedBox(
-                              width: MediaQuery.of(context).size.width,
-                              child: (idx-1 < items.length)
-                                ? ListTile(
-                                  title: Text(items[idx-1]),
-                                  onTap: () => setState(() {
-                                    _lastItems = items;
-                                    _selections.add(items[idx-1]);
-                                  }),
-                                  tileColor: Theme.of(context).cardColor,
-                                  shape: RoundedRectangleBorder(
-                                    borderRadius: BorderRadius.circular(10),
-                                  ),
-                                )
-                                : null,
-                            ),
-                            // Old tiles get moved away:
-                            if (value < 0.25 // remove after animation finished
-                                && _lastItems != null
-                                && _lastItems!.length > idx-1) // element available
-                              SizedBox(
-                                width: MediaQuery.of(context).size.width - 10,
-                                child: Padding(
-                                  padding: const EdgeInsets.only(left: 10),
-                                  child: ListTile(
-                                    title: Text(_lastItems![idx-1]),
-                                    tileColor: Theme.of(context).cardColor,
-                                    shape: RoundedRectangleBorder(
-                                      borderRadius: BorderRadius.circular(10),
-                                    ),
-                                  ),
-                                ),
-                              ),
-                          ],
-                        ),
-                      ),
-                    );
-                  },
-                ),
-              ),
-        ),
-      ),
-      if (_error != null)
-        ListTile(
-          title: Text(_error!,),
-          textColor: Theme.of(context).colorScheme.error,
-          titleTextStyle: Theme.of(context).textTheme.labelLarge,
-        ),
-
-      // TODO: don't rebuild when validation error
-      // TODO: backwards navigation
-    ],
-  );
-}