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DateFormField from StatelessWidget to FormField + fixing theming

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This commit is contained in:
Gaspard Merten 2020-07-14 16:30:59 +02:00
parent ddc994cdce
commit 2ca0f8d803
5 changed files with 281 additions and 88 deletions
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7
CHANGELOG.md
View file

@ -18,4 +18,9 @@
## 0.1.2
* Fixing an incorrect boolean (iOS picker was inverted with the Android one)
* Fixing an incorrect boolean (iOS picker was inverted with the Android one)
## 2.0.0
* DateFormField now extends FormField. All issues related to this are now fiex
* The style of the DateField (and by extension the one of DateFormField) is now rigorously applying the theme or any customization.

190
analysis_options.yaml Normal file
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@ -0,0 +1,190 @@
# Specify analysis options.
#
# Until there are meta linter rules, each desired lint must be explicitly enabled.
# See: https://github.com/dart-lang/linter/issues/288
#
# For a list of lints, see: http://dart-lang.github.io/linter/lints/
# See the configuration guide for more
# https://github.com/dart-lang/sdk/tree/master/pkg/analyzer#configuring-the-analyzer
#
# There are other similar analysis options files in the flutter repos,
# which should be kept in sync with this file:
#
# - analysis_options.yaml (this file)
# - packages/flutter/lib/analysis_options_user.yaml
# - https://github.com/flutter/plugins/blob/master/analysis_options.yaml
# - https://github.com/flutter/engine/blob/master/analysis_options.yaml
#
# This file contains the analysis options used by Flutter tools, such as IntelliJ,
# Android Studio, and the `flutter analyze` command.
analyzer:
strong-mode:
implicit-dynamic: false
errors:
# treat missing required parameters as a warning (not a hint)
missing_required_param: warning
# treat missing returns as a warning (not a hint)
missing_return: warning
# allow having TODOs in the code
todo: ignore
# Ignore analyzer hints for updating pubspecs when using Future or
# Stream and not importing dart:async
# Please see https://github.com/flutter/flutter/pull/24528 for details.
sdk_version_async_exported_from_core: ignore
exclude:
- "bin/cache/**"
# the following two are relative to the stocks example and the flutter package respectively
# see https://github.com/dart-lang/sdk/issues/28463
- "lib/i18n/stock_messages_*.dart"
- "lib/src/http/**"
linter:
rules:
# these rules are documented on and in the same order as
# the Dart Lint rules page to make maintenance easier
# https://github.com/dart-lang/linter/blob/master/example/all.yaml
- always_declare_return_types
# - always_put_required_named_parameters_first # we prefer having parameters in the same order as fields https://github.com/flutter/flutter/issues/10219
- always_require_non_null_named_parameters
# - always_specify_types
- annotate_overrides
# - avoid_annotating_with_dynamic # conflicts with always_specify_types
- avoid_as
- avoid_bool_literals_in_conditional_expressions
# - avoid_catches_without_on_clauses # we do this commonly
# - avoid_catching_errors # we do this commonly
- avoid_classes_with_only_static_members
# - avoid_double_and_int_checks # only useful when targeting JS runtime
- avoid_empty_else
- avoid_field_initializers_in_const_classes
- avoid_function_literals_in_foreach_calls
# - avoid_implementing_value_types # not yet tested
- avoid_init_to_null
# - avoid_js_rounded_ints # only useful when targeting JS runtime
- avoid_null_checks_in_equality_operators
# - avoid_positional_boolean_parameters # not yet tested
# - avoid_private_typedef_functions # we prefer having typedef (discussion in https://github.com/flutter/flutter/pull/16356)
- avoid_relative_lib_imports
- avoid_renaming_method_parameters
- avoid_return_types_on_setters
# - avoid_returning_null # there are plenty of valid reasons to return null
# - avoid_returning_null_for_future # not yet tested
- avoid_returning_null_for_void
# - avoid_returning_this # there are plenty of valid reasons to return this
# - avoid_setters_without_getters # not yet tested
# - avoid_shadowing_type_parameters # not yet tested
# - avoid_single_cascade_in_expression_statements # not yet tested
- avoid_slow_async_io
- avoid_types_as_parameter_names
# - avoid_types_on_closure_parameters # conflicts with always_specify_types
- avoid_unused_constructor_parameters
- avoid_void_async
- await_only_futures
- camel_case_types
- cancel_subscriptions
# - cascade_invocations # not yet tested
# - close_sinks # not reliable enough
# - comment_references # blocked on https://github.com/flutter/flutter/issues/20765
# - constant_identifier_names # needs an opt-out https://github.com/dart-lang/linter/issues/204
- control_flow_in_finally
# - curly_braces_in_flow_control_structures # not yet tested
# - diagnostic_describe_all_properties # not yet tested
- directives_ordering
- empty_catches
- empty_constructor_bodies
- empty_statements
# - file_names # not yet tested
- hash_and_equals
- implementation_imports
# - invariant_booleans # too many false positives: https://github.com/dart-lang/linter/issues/811
- iterable_contains_unrelated_type
# - join_return_with_assignment # not yet tested
- library_names
- library_prefixes
# - lines_longer_than_80_chars # not yet tested
- list_remove_unrelated_type
# - literal_only_boolean_expressions # too many false positives: https://github.com/dart-lang/sdk/issues/34181
- no_adjacent_strings_in_list
- no_duplicate_case_values
- non_constant_identifier_names
# - null_closures # not yet tested
# - omit_local_variable_types # opposite of always_specify_types
# - one_member_abstracts # too many false positives
# - only_throw_errors # https://github.com/flutter/flutter/issues/5792
- overridden_fields
- package_api_docs
- package_names
- package_prefixed_library_names
# - parameter_assignments # we do this commonly
- prefer_adjacent_string_concatenation
- prefer_asserts_in_initializer_lists
# - prefer_asserts_with_message # not yet tested
- prefer_collection_literals
- prefer_conditional_assignment
- prefer_const_constructors
- prefer_const_constructors_in_immutables
- prefer_const_declarations
- prefer_const_literals_to_create_immutables
# - prefer_constructors_over_static_methods # not yet tested
- prefer_contains
# - prefer_double_quotes # opposite of prefer_single_quotes
- prefer_equal_for_default_values
# - prefer_expression_function_bodies # conflicts with https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#consider-using--for-short-functions-and-methods
- prefer_final_fields
- prefer_final_in_for_each
- prefer_final_locals
# - prefer_for_elements_to_map_fromIterable # not yet tested
- prefer_foreach
# - prefer_function_declarations_over_variables # not yet tested
# - prefer_generic_function_type_aliases
# - prefer_if_elements_to_conditional_expressions # not yet tested
- prefer_if_null_operators
- prefer_initializing_formals
- prefer_inlined_adds
# - prefer_int_literals # not yet tested
# - prefer_interpolation_to_compose_strings # not yet tested
- prefer_is_empty
- prefer_is_not_empty
- prefer_iterable_whereType
# - prefer_mixin # https://github.com/dart-lang/language/issues/32
# - prefer_null_aware_operators # disable until NNBD, see https://github.com/flutter/flutter/pull/32711#issuecomment-492930932
- prefer_single_quotes
- prefer_spread_collections
- prefer_typing_uninitialized_variables
- prefer_void_to_null
# - provide_deprecation_message # not yet tested
# - public_member_api_docs # enabled on a case-by-case basis; see e.g. packages/analysis_options.yaml
- recursive_getters
- slash_for_doc_comments
# - sort_child_properties_last # not yet tested
- sort_constructors_first
- sort_pub_dependencies
- sort_unnamed_constructors_first
- test_types_in_equals
- throw_in_finally
# - type_annotate_public_apis # subset of always_specify_types
- type_init_formals
# - unawaited_futures # too many false positives
# - unnecessary_await_in_return # not yet tested
- unnecessary_brace_in_string_interps
- unnecessary_const
- unnecessary_getters_setters
# - unnecessary_lambdas # has false positives: https://github.com/dart-lang/linter/issues/498
- unnecessary_new
- unnecessary_null_aware_assignments
- unnecessary_null_in_if_null_operators
- unnecessary_overrides
- unnecessary_parenthesis
- unnecessary_statements
- unnecessary_this
- unrelated_type_equality_checks
# - unsafe_html # not yet tested
- use_full_hex_values_for_flutter_colors
# - use_function_type_syntax_for_parameters # not yet tested
- use_rethrow_when_possible
# - use_setters_to_change_properties # not yet tested
# - use_string_buffers # has false positives: https://github.com/dart-lang/sdk/issues/34182
# - use_to_and_as_if_applicable # has false positives, so we prefer to catch this by code-review
- valid_regexps
# - void_checks # not yet tested

1
example/main.dart
View file

@ -30,6 +30,7 @@ class _HomeWidgetState extends State<HomeWidget> {
Column(
children: <Widget>[
DateField(
selectedDate: selectedDate,
onDateSelected: (DateTime date) {
setState(() {

169
lib/date_field.dart
View file

@ -2,7 +2,6 @@ import 'dart:io';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
/// A [FormField] that contains a [DateField].
@ -14,30 +13,56 @@ import 'package:intl/intl.dart';
/// save, reset, or validate multiple fields at once. To use without a [Form],
/// pass a [GlobalKey] to the constructor and use [GlobalKey.currentState] to
/// save or reset the form field.
class DateFormField extends StatelessWidget {
/// An optional method to call with the final value when the form is saved via
/// [FormState.save].
final FormFieldSetter<DateTime> onSaved;
class DateFormField extends FormField<DateTime> {
/// An optional method that validates an input. Returns an error string to
/// display if the input is invalid, or null otherwise.
final FormFieldValidator<DateTime> validator;
DateFormField({
Key key,
FormFieldSetter<DateTime> onSaved,
FormFieldValidator<DateTime> validator,
DateTime initialValue,
bool autovalidate = false,
bool enabled = true,
this.onDateSelected,
this.firstDate,
this.lastDate,
this.label = 'Select date',
this.dateFormat,
this.decoration,
this.initialDatePickerMode = DatePickerMode.day
}) : super(
key: key,
initialValue: initialValue,
onSaved: onSaved,
validator: validator,
autovalidate: autovalidate,
enabled: enabled,
builder: (FormFieldState<DateTime> field) {
final _DateFormFieldState state = field;
/// An optional value to initialize the form field to, or null otherwise.
final DateTime initialValue;
void onChangedHandler(DateTime value) {
if (onDateSelected != null) {
onDateSelected(value);
}
field.didChange(value);
}
return DateField(
label: label,
firstDate: firstDate,
lastDate: lastDate,
decoration: decoration,
initialDatePickerMode: initialDatePickerMode,
dateFormat: dateFormat,
errorText: state.errorText,
onDateSelected: onChangedHandler,
selectedDate: state.value,
enabled: enabled,
);
},
);
/// If true, this form field will validate and update its error text
/// immediately after every change. Otherwise, you must call
/// [FormFieldState.validate] to validate. If part of a [Form] that
/// auto-validates, this value will be ignored.
final bool autovalidate;
/// Whether the form is able to receive user input.
///
/// Defaults to true. If [autovalidate] is true, the field will be validated.
/// Likewise, if this field is false, the widget will not be validated
/// regardless of [autovalidate].
final bool enabled;
/// (optional) A callback that will be triggered whenever a new
/// DateTime is selected
final ValueChanged<DateTime> onDateSelected;
/// (optional) The first date that the user can select (default is 1900)
final DateTime firstDate;
@ -57,64 +82,31 @@ class DateFormField extends StatelessWidget {
/// (optional) Let you choose the [DatePickerMode] for the date picker! (default is [DatePickerMode.day]
final DatePickerMode initialDatePickerMode;
const DateFormField(
{Key key,
this.onSaved,
this.validator,
this.initialValue,
this.autovalidate = false,
this.enabled = true,
this.firstDate,
this.lastDate,
this.label = 'Select date',
this.dateFormat,
this.decoration,
this.initialDatePickerMode})
: super(key: key);
@override
Widget build(BuildContext context) {
return FormField<DateTime>(
onSaved: onSaved,
autovalidate: autovalidate,
validator: validator,
enabled: enabled,
initialValue: initialValue,
builder: (FormFieldState state) {
return DateField(
label: label,
firstDate: firstDate,
lastDate: lastDate,
decoration: decoration,
initialDatePickerMode: initialDatePickerMode,
dateFormat: dateFormat,
errorText: state.errorText,
onDateSelected: (DateTime value) {
state.didChange(value);
},
selectedDate: state.value,
);
});
}
_DateFormFieldState createState() => _DateFormFieldState();
}
///
class _DateFormFieldState extends FormFieldState<DateTime> {}
/// [DateField]
///
/// Shows an [_InputDropdown] that'll trigger [DateField._selectDate] whenever the user
/// clicks on it ! The date picker is **platform responsive** (ios date picker style for ios, ...)
class DateField extends StatelessWidget {
/// Default constructor
DateField({
const DateField({
@required this.onDateSelected,
@required this.selectedDate,
this.firstDate,
this.lastDate,
this.initialDatePickerMode = DatePickerMode.day,
this.decoration,
this.label = 'Select date',
this.errorText,
this.dateFormat,
this.label = 'Select date',
this.enabled = true,
});
/// Callback for whenever the user selects a [DateTime]
@ -144,19 +136,20 @@ class DateField extends StatelessWidget {
/// (optional) How to display the [DateTime] for the user (default is [DateFormat.yMMMD])
final DateFormat dateFormat;
/// (optional) Whether the field is usable. If false the user won't be able to select any date
final bool enabled;
/// Shows a dialog asking the user to pick a date !
Future<void> _selectDate(BuildContext context) async {
TextFormField();
if (Platform.isIOS) {
showModalBottomSheet(
showModalBottomSheet<void>(
context: context,
builder: (BuildContext builder) {
return Container(
height: MediaQuery.of(context).size.height / 4,
child: CupertinoDatePicker(
mode: CupertinoDatePickerMode.date,
onDateTimeChanged: (DateTime dateTime) =>
onDateSelected(dateTime),
onDateTimeChanged: onDateSelected,
initialDateTime: selectedDate ?? lastDate ?? DateTime.now(),
minimumDate: firstDate,
maximumDate: lastDate,
@ -164,8 +157,10 @@ class DateField extends StatelessWidget {
);
},
);
} else {
DateTime _selectedDate = await showDatePicker(
}
else {
final DateTime _selectedDate = await showDatePicker(
context: context,
initialDatePickerMode: initialDatePickerMode,
initialDate: selectedDate ?? lastDate ?? DateTime.now(),
@ -190,9 +185,9 @@ class DateField extends StatelessWidget {
label: text == null ? null : label,
errorText: errorText,
decoration: decoration,
onPressed: () {
onPressed: enabled ? () {
_selectDate(context);
},
} : null,
);
}
}
@ -206,13 +201,15 @@ class DateField extends StatelessWidget {
class _InputDropdown extends StatelessWidget {
const _InputDropdown(
{Key key,
this.label,
this.text,
this.decoration,
this.textStyle,
this.onPressed,
this.errorText})
: super(key: key);
@required this.text,
this.label,
this.decoration,
this.textStyle,
this.onPressed,
this.errorText,
}) :
assert(text != null),
super(key: key);
/// The label to display for the field (default is 'Select date')
final String label;
@ -234,33 +231,33 @@ class _InputDropdown extends StatelessWidget {
@override
Widget build(BuildContext context) {
assert(text != null);
BorderRadius inkwellBorderRadius;
if (decoration?.border?.runtimeType == OutlineInputBorder) {
inkwellBorderRadius = BorderRadius.circular(8);
}
final InputDecoration effectiveDecoration = decoration?.copyWith(
errorText: errorText
) ?? InputDecoration(
labelText: label,
errorText: errorText,
suffixIcon: Icon(Icons.arrow_drop_down),
).applyDefaults(Theme.of(context).inputDecorationTheme);
return Material(
color: Colors.transparent,
child: InkWell(
borderRadius: inkwellBorderRadius,
onTap: onPressed,
child: InputDecorator(
decoration: decoration ??
InputDecoration(
labelText: label,
errorText: errorText,
border: UnderlineInputBorder(borderSide: BorderSide()),
contentPadding: EdgeInsets.only(bottom: 2.0)),
decoration: effectiveDecoration,
baseStyle: textStyle,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text(text, style: textStyle),
Icon(Icons.arrow_drop_down),
],
),
),

2
pubspec.yaml
View file

@ -1,6 +1,6 @@
name: date_field
description: Contains DateField and DateFormField which allows the user to pick a DateTime from an input field!
version: 0.1.2
version: 0.2.0
homepage: 'https://github.com/GaspardMerten/date_field'
environment: