flutter-sport/lib/widgets/dialog/alert_dialog.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:sport/widgets/button_cancel.dart';
import 'package:sport/widgets/button_primary.dart';
import 'package:sport/widgets/misc.dart';

class CustomAlertDialog extends StatelessWidget {
  final String title;
  final Widget? child;
  final String textCancel;
  final String textOk;
  final Function ok;
  final bool addClose;
  final bool isLine;
  final ValueNotifier? onChanged;
  final bool cancelable;

  final Key? okKey;
  final Key? cancelKey;

  CustomAlertDialog({
    this.title = "",
    this.child,
    this.textCancel = "取消",
    this.textOk = "确定",
    required this.ok,
    this.addClose = false,
    this.isLine = false,
    this.onChanged,
    this.cancelable = true,
    this.okKey,
    this.cancelKey,
  });

  @override
  Widget build(BuildContext context) {
    var _width = MediaQuery.of(context).size.shortestSide * (child != null ? 0.70 : 0.66);
    return Material(
      type: MaterialType.transparency,
      child: Scaffold(
        backgroundColor: Colors.transparent,
        body: Center(
          child: Container(
            width: _width,
            decoration: BoxDecoration(
              borderRadius: BorderRadius.all(Radius.circular(10.0)),
              color: Colors.white,
            ),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
                if (addClose)
                  Align(
                      alignment: Alignment.topRight,
                      child: IconButton(
                        icon: Image.asset("lib/assets/img/btn_close_big.png"),
                        onPressed: () => Navigator.pop(context, false),
                      )),
                if (title.isNotEmpty == true)
                  Stack(
                    children: <Widget>[
                      Padding(
                          padding: EdgeInsets.fromLTRB(
                              0,
                              child != null
                                  ? addClose
                                      ? 0
                                      : 16.0
                                  : 32.0,
                              0,
                              isLine ? 15.0 : 20),
                          child: Column(
                            children: <Widget>[
                              isLine
                                  ? Padding(
                                      child: Text(
                                        title,
                                        style: Theme.of(context).textTheme.headline3,
                                      ),
                                      padding: EdgeInsets.only(top: 5.0, bottom: 8.0, left: 16.0, right: 16.0),
                                    )
                                  : Padding(
                                      padding: const EdgeInsets.symmetric(horizontal: 16.0),
                                      child: Text(
                                        title,
                                        style: Theme.of(context).textTheme.headline3,
                                      ),
                                    ),
                              if (isLine)
                                Divider(
                                  endIndent: 20.0,
                                  indent: 20.0,
                                )
                            ],
                          ))
                    ],
                  ),
//
                if (child != null)
                  ConstrainedBox(
                      constraints: BoxConstraints(maxHeight: MediaQuery.of(context).size.height - 250),
                      child: SingleChildScrollView(
                        child: child,
                      )),
                Padding(
                  padding: const EdgeInsets.fromLTRB(16.0, 20.0, 16.0, 20.0),
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      if (cancelable == true)
                        Expanded(
                          child: CancelButton(
                              key: cancelKey,
                              height: 35,
                              callback: () {
                                Navigator.of(context).pop(false);
                              },
                              content: textCancel),
                        ),
                      if (cancelable == true)
                        const SizedBox(
                          width: 20.0,
                        ),
                      Expanded(
                          child: PrimaryButton(
                              key: okKey,
                              height: 35,
                              callback: () {
                                ok();
                              },
                              content: textOk))
                    ],
                  ),
                )
              ],
            ),
          ),
        ),
      ),
    );
  }
}