showMaterialPalettePicker function

Future<Color?> showMaterialPalettePicker({ required BuildContext context, String title = "Pick a color", required Color selectedColor, Color? headerColor, Color? headerTextColor, Color? backgroundColor, Color? buttonTextColor, String? confirmText, bool cancellable = true, String? cancelText, double? maxLongSide, double? maxShortSide, ValueChanged<Color>? onChanged, VoidCallback? onConfirmed, VoidCallback? onCancelled, })

Allows Material palette selection of a color

Implementation

Future<Color?> showMaterialPalettePicker({
  required BuildContext context,

  /// The title for the dialog box
  String title = "Pick a color",

  /// The color that is initially selected
  required Color selectedColor,

  /// The dialog header color (overrides theme)
  Color? headerColor,

  /// The dialog header text color (overrides theme)
  Color? headerTextColor,

  /// The dialog background color (overrides theme)
  Color? backgroundColor,

  /// The button text color (overrides theme)
  Color? buttonTextColor,

  /// Text to display in the confirm button
  String? confirmText,

  /// Whether to display a cancel button
  bool cancellable = true,

  /// Text to display in the cancel button
  String? cancelText,

  /// Used to restrict how tall the dialog can be.
  double? maxLongSide,

  /// Used to restrict how wide the dialog can be.
  double? maxShortSide,

  /// Function that gets called when the value is changed
  ValueChanged<Color>? onChanged,

  /// Function that gets called when the confirm button is pressed
  VoidCallback? onConfirmed,

  /// Function that gets called when the cancel button is pressed
  VoidCallback? onCancelled,
}) {
  return showDialog<Color>(
    context: context,
    barrierDismissible: cancellable,
    builder: (BuildContext context) {
      return OrientationBuilder(
        builder: (context, orientation) {
          return ResponsiveDialog(
            context: context,
            title: title,
            headerColor: headerColor,
            headerTextColor: headerTextColor,
            backgroundColor: backgroundColor,
            buttonTextColor: buttonTextColor,
            confirmText: confirmText,
            cancelText: cancelText,
            maxLongSide: maxLongSide,
            maxShortSide: maxLongSide,
            child: MaterialPicker(
              pickerColor: selectedColor,
              onColorChanged: (color) => selectedColor = color,
              enableLabel: true, // only on portrait mode
            ),
            okPressed: () => Navigator.of(context).pop(selectedColor),
          );
        },
      );
    },
  ).then((selection) {
    if (selection != null) {
      onChanged?.call(selection);
      onConfirmed?.call();
    } else {
      onCancelled?.call();
    }
    return selection;
  });
}