Example de filtres pour Jonathan

gistfile1.txt

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class Filter {
  String name;
  bool Function(String) condition;

  Filter(this.name, this.condition);
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key}) : super(key: key);

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  List<String> challenges = ["jo", "po", "clem", "chri"];

  List<Filter> filters = [
    Filter(
      "Commence par p",
      (challenge) => challenge[0] == "p",
    ),
    Filter(
      "Puis se suit par o",
      (challenge) => challenge[1] == "w",
    )
  ];

  List<String> filteredChallenges = [];

  void computeFilteredChallenges() {
    filteredChallenges = challenges
        .where((userName) => filters.every(
              (filter) => filter.condition(userName),
            ))
        .toList();
  }

  @override
  Widget build(BuildContext context) => Scaffold(
        body: ListView.builder(
          itemCount: filteredChallenges.length,
          itemBuilder: (context, i) => Text(
            "   " + filteredChallenges[i],
            style: const TextStyle(fontSize: 30),
          ),
        ),
      );



  void validateModal() {
    filters = modal.newFilters;
    computeFilteredChallenges();
  }
}