Commit f73b679

@@ -0,0 +1,137 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+class ColorPicker extends StatefulWidget {
+  const ColorPicker({super.key,
+    this.availableColors,
+    this.initialColor,
+    required this.onColorSelected,
+    this.showNullColor = true,
+    this.circleSize = 50
+  });
+
+  /// Colors to choose from.
+  ///
+  /// Defaults to [ColorPicker.allColors].
+  final List<Color>? availableColors;
+
+  /// Color that starts out highlighted.
+  ///
+  /// When [initialColor] is null and [showNullColor] is false no color is selected.
+  final Color? initialColor;
+
+  /// Called after a click on a color.
+  final FutureOr<void> Function(Color? color) onColorSelected;
+
+  /// Controls whether a option for selecting no color is displayed.
+  final bool showNullColor;
+
+  /// List of all material colors and black/white
+  static final List<Color> allColors = [
+    const Color(0xFFFFFFFF),
+    const Color(0xFF000000),
+    Colors.red,
+    Colors.redAccent,
+    Colors.pink,
+    Colors.pinkAccent,
+    Colors.purple,
+    Colors.purpleAccent,
+    Colors.deepPurple,
+    Colors.deepPurpleAccent,
+    Colors.indigo,
+    Colors.indigoAccent,
+    Colors.blue,
+    Colors.blueAccent,
+    Colors.lightBlue,
+    Colors.lightBlueAccent,
+    Colors.cyan,
+    Colors.cyanAccent,
+    Colors.teal,
+    Colors.tealAccent,
+    Colors.green,
+    Colors.greenAccent,
+    Colors.lightGreen,
+    Colors.lightGreenAccent,
+    Colors.lime,
+    Colors.limeAccent,
+    Colors.yellow,
+    Colors.yellowAccent,
+    Colors.amber,
+    Colors.amberAccent,
+    Colors.orange,
+    Colors.orangeAccent,
+    Colors.deepOrange,
+    Colors.deepOrangeAccent,
+    Colors.brown,
+    Colors.grey,
+    Colors.blueGrey
+  ];
+
+  /// Size of the color circles.
+  final double circleSize;
+
+  @override
+  State<ColorPicker> createState() => _ColorPickerState();
+}
+
+class _ColorPickerState extends State<ColorPicker> {
+  /// Currently selected color.
+  Color? _selected;
+
+  @override
+  void initState() {
+    super.initState();
+    _selected = widget.initialColor;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final availableColors = widget.availableColors ?? ColorPicker.allColors;
+    return Wrap(
+      children: [
+        for (final color in availableColors)
+            InkWell(
+              onTap: () {
+                setState(() {
+                  _selected = color;
+                });
+                widget.onColorSelected(color);
+              },
+              child: Container(
+                decoration: BoxDecoration(
+                  color: _selected == color ? Theme.of(context).disabledColor : Colors.transparent,
+                  shape: BoxShape.circle,),
+                padding: const EdgeInsets.all(5),
+                child: Container(
+                  height: widget.circleSize,
+                  width: widget.circleSize,
+                  decoration: BoxDecoration(color: color, shape: BoxShape.circle,),
+                ),
+              ),
+            ),
+        if (widget.showNullColor)
+          InkWell(
+            onTap: () {
+              setState(() {
+                _selected = null;
+              });
+              widget.onColorSelected(null);
+            },
+            child: Container(
+              padding: const EdgeInsets.all(5),
+              decoration: BoxDecoration(
+                color: _selected == null ? Theme.of(context).disabledColor : Colors.transparent,
+                shape: BoxShape.circle,),
+              child: Container(
+                height: widget.circleSize,
+                width: widget.circleSize,
+                decoration: const BoxDecoration(color: Colors.transparent, shape: BoxShape.circle,),
+                child: const Icon(Icons.block),
+              ),
+            ),
+          ),
+      ],
+    );
+  }
+}
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