refactor: delete all deprecated attributes

[koukibadr]

Summary by CodeRabbit

• New Features

  • Added a new demo screen showcasing multiple picker modes and configurations.

• Enhancements

  • Improved search filtering for picker items.
  • Added support for more flexible result handling when selections are cleared or unavailable.
  • Exposed the currently selected value(s) for easier integration.

• Bug Fixes

  • Refined date selection behavior to better respect allowed calendar days.
  • Simplified picker headers and removed the separate close button area.

[coderabbitai]

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: c016fcfb-850a-4db4-b59c-bc441b672cb1

📥 Commits

Reviewing files that changed from the base of the PR and between 1e7ea33 and fac757e.

📒 Files selected for processing (7)

• analysis_options.yaml
• example/lib/example_widget.dart
• example/lib/main.dart
• lib/bottom_picker.dart
• lib/widgets/close_icon.dart
• lib/widgets/year_picker.dart
• test/simple_bottom_picker_test.dart

📝 Walkthrough

Walkthrough

This PR refactors BottomPicker: adds a SearchItemPredicate<T> typedef, widens callbacks to nullable types, removes header title/close-icon support, moves selected values into widget-owned fields with new getters, adds calendar-day filtering, removes CloseIcon widget, extracts the example app into a new file, updates a test, and adjusts lint exclusions.

Changes

BottomPicker API refactor and example demo

Layer / File(s)	Summary
Search predicate typedef and nullable callbacks lib/bottom_picker.dart	Adds SearchItemPredicate<T> typedef, widens onSubmit/onDismiss/range callbacks to nullable types, adds pickerTextStyle wiring across constructors, removes non-null assertions.
Header/close-icon removal lib/bottom_picker.dart, lib/widgets/close_icon.dart	Removes pickerTitle/pickerDescription/close-icon properties, simplifies header rendering to headerBuilder only, deletes the CloseIcon widget.
Widget-owned selected state and getters lib/bottom_picker.dart, lib/widgets/year_picker.dart	Adds currentValue/currentFirstDateTime/currentSecondDateTime getters, refactors initState/dispose, adds static of<T>(), moves selection state to widget fields, adds calendarDays filtering, updates year_picker.dart to pass raw list to SimplePicker.
Test and config updates test/simple_bottom_picker_test.dart, analysis_options.yaml	Guards test onSubmit callback against null, adjusts analyzer exclude list.
Example app extraction example/lib/example_widget.dart, example/lib/main.dart	Extracts ExampleApp widget into its own file demonstrating all picker variants; updates main.dart imports.

Estimated code review effort: 4 (Complex) | ~60 minutes

Possibly related PRs

• koukibadr/Bottom-Picker#172: Both PRs refactor lib/bottom_picker.dart by removing deprecated header/close-icon-related constructor parameters and related API wiring.
• koukibadr/Bottom-Picker#173: Both PRs modify the search/filter API and generic typing in lib/bottom_picker.dart.

Poem

A rabbit hops through headers old,
Close icons gone, new getters bold 🐇
Selected dates now live with pride,
Nullable callbacks by my side,
Example widgets, fresh and new—
Thump thump, this refactor's true! 🥕

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title matches the main change: removing deprecated picker attributes and related API cleanup.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[coderabbitai]

Actionable comments posted: 3

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@lib/bottom_picker.dart`:
- Around line 775-785: The currentValue getter in bottom_picker.dart falls back
to _selectedDateTime for range picker types, but rangeDate and rangeTime use
_selectedFirstDateTime and _selectedSecondDateTime instead. Update currentValue
to explicitly handle the range picker cases in BottomPickerType so it does not
return an unset field, either by returning an appropriate range value or by
preventing currentValue from being used for range flows; also make sure any
existing getters like currentFirstDateTime and currentSecondDateTime are the
intended accessors for range pickers.
- Around line 803-808: The _selectedItemIndex, _selectedItem, _selectedDateTime,
_selectedTimerDuration, _selectedSecondDateTime, and _selectedFirstDateTime
fields are mutable runtime selection state and should live in BottomPickerState
rather than BottomPicker. Move the selection tracking into the state class and
update the relevant selection handlers in BottomPickerState so currentValue and
submit callbacks read from state instead of widget fields. Remove any writing
back into widget and make sure the state persists across rebuilds so selections
do not reset when BottomPicker is recreated.
- Around line 1046-1051: The selected-date update logic in
CupertinoDatePickerWidget is filtering calendarDays twice, which can leave
_selectedDateTime out of sync with the visible wheel state; remove the early
return in the date assignment path and rely on the widget’s existing
calendarDays enforcement/snapping behavior instead. Keep the update in the code
path that assigns widget._selectedDateTime so the picker always tracks the
displayed date, and use the existing DateTime.weekday mapping directly since it
already matches fullWeek.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 255dceec-e75a-48ca-9f63-b725625e9a32

📥 Commits

Reviewing files that changed from the base of the PR and between 043a1f2 and 1e7ea33.

📒 Files selected for processing (7)

• analysis_options.yaml
• example/lib/example_widget.dart
• example/lib/main.dart
• lib/bottom_picker.dart
• lib/widgets/close_icon.dart
• lib/widgets/year_picker.dart
• test/simple_bottom_picker_test.dart

💤 Files with no reviewable changes (1)

• lib/widgets/close_icon.dart