Dup

aidedejeu_flutter/lib/main.dart

@@ -1,111 +1,173 @@
+import 'dart:io';
+
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_markdown/flutter_markdown.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+import 'package:path/path.dart';
+import 'package:sqflite/sqflite.dart';
 
 void main() => runApp(MyApp());
 
+class Item {
+  String Id;
+  String Markdown;
+
+  Item({this.Id, this.Markdown});
+
+  factory Item.fromMap(Map<String, dynamic> json) => new Item(
+    Id: json["Id"],
+    Markdown: json["Markdown"],
+  );
+
+  Map<String, dynamic> toMap() => {
+    "Id": Id,
+    "Markdown": Markdown,
+  };
+}
+
+Database _database;
+
+Future<Database> get database async {
+  if (_database != null) return _database;
+  _database = await getDatabaseInstance();
+  return _database;
+}
+
+Future<Database> getDatabaseInstance() async {
+  var databasesPath = await getDatabasesPath();
+  var path = join(databasesPath, "library.db");
+
+  var exists = await databaseExists(path);
+  if (!exists) {
+    print("Creating new copy from asset");
+
+    try {
+      await Directory(dirname(path)).create(recursive: true);
+    } catch (_) {}
+
+    ByteData data = await rootBundle.load(join("assets", "library.db"));
+    List<int> bytes =
+    data.buffer.asUint8List(data.offsetInBytes, data.lengthInBytes);
+
+    await File(path).writeAsBytes(bytes, flush: true);
+  } else {
+    print("Opening existing database");
+  }
+
+  return await openDatabase(path, readOnly: true);
+}
+
+Future<Item> getItemWithId(String id) async {
+  print("getItemWithId " + id);
+  final db = await database;
+  var response = await db
+      .query("Items", where: "Id = ? OR RootId = ?", whereArgs: [id, id]);
+  if (response.isEmpty) {
+    print("Id not found");
+  }
+  return response.isNotEmpty ? Item.fromMap(response.first) : null;
+}
+
 class MyApp extends StatelessWidget {
-  // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
       title: 'Flutter Demo',
       theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // Try running your application with "flutter run". You'll see the
-        // application has a blue toolbar. Then, without quitting the app, try
-        // changing the primarySwatch below to Colors.green and then invoke
-        // "hot reload" (press "r" in the console where you ran "flutter run",
-        // or simply save your changes to "hot reload" in a Flutter IDE).
-        // Notice that the counter didn't reset back to zero; the application
-        // is not restarted.
-        primarySwatch: Colors.blue,
+        primarySwatch: Colors.red,
       ),
-      home: MyHomePage(title: 'Flutter Demo Home Page'),
+      home: MyHomePage(id: 'index.md'),
     );
   }
 }
 
 class MyHomePage extends StatefulWidget {
-  MyHomePage({Key key, this.title}) : super(key: key);
+  MyHomePage({Key key, @required this.id}) : super(key: key);
 
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
-  final String title;
+  final String id;
 
   @override
-  _MyHomePageState createState() => _MyHomePageState();
+  _MyHomePageState createState() => _MyHomePageState(id: this.id);
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
+  _MyHomePageState({@required this.id});
 
-  void _incrementCounter() {
+  final String id;
+
+  void setMarkdown(String md) {
     setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
+      markdown = md.replaceAllMapped(RegExp(r'<!--.*?-->'), (match) {
+        return '';
+      });
     });
   }
 
+  String markdown = "";
+  MarkdownStyleSheet styleSheet;
+
+  @override
+  void initState() {
+    super.initState();
+
+    ThemeData theme = ThemeData(
+      brightness: Brightness.light,
+      primaryColor: Colors.lightBlue[800],
+      accentColor: Colors.cyan[600],
+      fontFamily: 'LinuxLibertine',
+      textTheme: TextTheme(
+        headline: TextStyle(fontSize: 20.0, fontWeight: FontWeight.bold),
+        title: TextStyle(fontSize: 18.0, fontStyle: FontStyle.italic),
+        body1: TextStyle(fontSize: 14.0, fontFamily: 'Hind'),
+      ),
+    );
+
+    //styleSheet = MarkdownStyleSheet.fromTheme(theme);
+    styleSheet = MarkdownStyleSheet(
+        tableColumnWidth: IntrinsicColumnWidth(),
+        tableCellsPadding: EdgeInsets.all(0.2));
+
+    getItemWithId(this.id)
+        .then((item) => setMarkdown(item.Markdown))
+        .catchError((error) => print(error));
+  }
+
+  final Widget svg = SvgPicture.asset("assets/crystal-ball.svg",
+    height: 20.0,
+    width: 20.0,
+    allowDrawingOutsideViewBox: true,
+  );
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
+
     return Scaffold(
       appBar: AppBar(
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
-        title: Text(widget.title),
+        title: Text(widget.id),
       ),
-      body: Center(
-        // Center is a layout widget. It takes a single child and positions it
-        // in the middle of the parent.
-        child: Column(
-          // Column is also a layout widget. It takes a list of children and
-          // arranges them vertically. By default, it sizes itself to fit its
-          // children horizontally, and tries to be as tall as its parent.
-          //
-          // Invoke "debug painting" (press "p" in the console, choose the
-          // "Toggle Debug Paint" action from the Flutter Inspector in Android
-          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
-          // to see the wireframe for each widget.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.display1,
-            ),
-          ],
-        ),
+      body: Markdown(
+          data: markdown,
+          styleSheet: styleSheet,
+          onTapLink: (link) => Navigator.push(context,
+              MaterialPageRoute(builder: (context) => MyHomePage(id: link)))),
+      bottomNavigationBar: BottomNavigationBar(
+        items: const <BottomNavigationBarItem>[
+          BottomNavigationBarItem(
+            icon: Icon(Icons.home),
+            title: Text('Home'),
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.business),
+            title: Text('Business'),
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.business),
+            //icon: svg,
+            title: Text('School'),
+            //activeIcon: Icon(Icons.category, color: Color(0xFFEF5123)),
+          ),
+        ],
       ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
     );
   }
 }