HMG_Patient_App_New/lib/widgets/dropdown/dropdown_widget.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart' show Icons, PopupMenuItem, showMenu, Colors;
import 'package:hmg_patient_app_new/core/utils/size_utils.dart';
import 'package:hmg_patient_app_new/core/utils/utils.dart';
import 'package:hmg_patient_app_new/extensions/widget_extensions.dart';

class DropdownWidget extends StatelessWidget {
  final String labelText;
  final String hintText;
  final List<String> dropdownItems;
  final String? selectedValue;
  final Function(String?)? onChange;
  final bool isEnable;
  final bool isBorderAllowed;
  final bool isAllowRadius;
  final EdgeInsetsGeometry? padding;
  final bool hasSelectionCustomIcon;
  final String? selectionCustomIcon;

  const DropdownWidget({
    Key? key,
    required this.labelText,
    required this.hintText,
    required this.dropdownItems,
    this.selectedValue,
    this.onChange,
    this.isEnable = true,
    this.isBorderAllowed = true,
    this.isAllowRadius = true,
    this.padding,
    this.hasSelectionCustomIcon = false,
    this.selectionCustomIcon,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: padding,
      alignment: Alignment.center,
      decoration: RoundedRectangleBorder().toSmoothCornerDecoration(
        color: Colors.white,
        borderRadius: isAllowRadius ? 15.h : null,
        side: isBorderAllowed ? BorderSide(color: const Color(0xffefefef), width: 1) : null,
      ),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          _buildLabelText(),
          _buildDropdown(context),
        ],
      ),
    );
  }

  Widget _buildLabelText() {
    return Text(
      labelText,
      style: TextStyle(
        fontSize: 12.fSize,
        fontWeight: FontWeight.w500,
        color: Color(0xff898A8D),
        letterSpacing: -0.2,
        height: 18 / 12,
      ),
    );
  }

  Widget _buildDropdown(BuildContext context) {
    return GestureDetector(
      onTap: isEnable
          ? () async {
              final renderBox = context.findRenderObject() as RenderBox;
              final offset = renderBox.localToGlobal(Offset.zero);
              final selected = await showMenu<String>(
                context: context,
                position: RelativeRect.fromLTRB(
                  offset.dx,
                  offset.dy + renderBox.size.height,
                  offset.dx + renderBox.size.width,
                  0,
                ),
                items: dropdownItems
                    .map(
                      (e) => PopupMenuItem<String>(
                        value: e,
                        child: Text(
                          e,
                          style: TextStyle(
                            fontSize: 14.fSize,
                            height: 21 / 14,
                            fontWeight: FontWeight.w500,
                            letterSpacing: -0.2,
                          ),
                        ),
                      ),
                    )
                    .toList(),
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(12),
                ),
              );

              if (selected != null && onChange != null) {
                onChange!(selected);
              }
            }
          : null,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          Expanded(
            child: Text(
              (selectedValue == null || selectedValue!.isEmpty) ? hintText : selectedValue!,
              textAlign: TextAlign.left,
              textDirection: TextDirection.ltr,
              style: TextStyle(
                fontSize: 14.fSize,
                height: 21 / 14,
                fontWeight: FontWeight.w500,
                color: (selectedValue != null && selectedValue!.isNotEmpty) ? const Color(0xff2E3039) : const Color(0xffB0B0B0),
                letterSpacing: -0.2,
              ),
            ),
          ),
          if (hasSelectionCustomIcon && selectionCustomIcon != null) Utils.buildSvgWithAssets(icon: selectionCustomIcon!) else const Icon(Icons.keyboard_arrow_down_outlined),
        ],
      ),
    );
  }
}