add dart client to packages

2021-01-07 12:09:26 -04:00
parent e7eb0a27f6
commit f28cc91301
160 changed files with 26368 additions and 0 deletions
@@ -0,0 +1,100 @@
+import 'package:flutter/material.dart';
+
+class ConnectionIndicator extends StatefulWidget {
+  final IndicatorController indicatorController;
+
+  const ConnectionIndicator({
+    Key key,
+    this.indicatorController,
+  }) : super(key: key);
+
+  @override
+  _ConnectionIndicatorState createState() => _ConnectionIndicatorState();
+}
+
+class _ConnectionIndicatorState extends State<ConnectionIndicator> {
+  double _height = 0;
+  String _text;
+  Color _color;
+  VoidCallback _listener;
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedContainer(
+      duration: Duration(milliseconds: 300),
+      height: _height,
+      child: Container(
+        width: double.infinity,
+        child: Material(
+          color: _color ?? Theme.of(context).snackBarTheme.backgroundColor,
+          child: Center(
+            child: Text(_text ?? ''),
+          ),
+        ),
+      ),
+    );
+  }
+
+  @override
+  void initState() {
+    super.initState();
+
+    _listener = () {
+      final values = widget.indicatorController.indicatorValues.value;
+      if (mounted) {
+        setState(() {
+          _height = 30;
+          _text = values.text;
+          _color = values.color;
+        });
+      }
+
+      if (values.duration != null) {
+        Future.delayed(values.duration, () {
+          if (mounted) {
+            setState(() {
+              _height = 0;
+              _text = '';
+            });
+          }
+        });
+      }
+    };
+
+    widget.indicatorController.indicatorValues.addListener(_listener);
+  }
+
+  @override
+  void dispose() {
+    widget.indicatorController.indicatorValues.removeListener(_listener);
+    super.dispose();
+  }
+}
+
+class IndicatorValues {
+  final String text;
+  final Color color;
+  final Duration duration;
+
+  IndicatorValues({
+    this.duration,
+    this.text,
+    this.color,
+  });
+}
+
+class IndicatorController {
+  ValueNotifier<IndicatorValues> indicatorValues = ValueNotifier(null);
+
+  void showIndicator({
+    Duration duration,
+    Color color,
+    String text,
+  }) {
+    indicatorValues.value = IndicatorValues(
+      text: text,
+      color: color,
+      duration: duration,
+    );
+  }
+}