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78 lines
2.1 KiB
78 lines
2.1 KiB
import 'package:flutter/material.dart';
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@immutable
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class CustomTitleBar extends StatelessWidget with PreferredSizeWidget {
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const CustomTitleBar({
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Key? key,
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required this.title,
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required this.showBack,
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this.rightHandButton,
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this.backgroundColor,
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this.beforeBack,
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}) : super(key: key);
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final Text title;
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final bool showBack;
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final IconButton? rightHandButton;
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final Color? backgroundColor;
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final Future<void> Function()? beforeBack;
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@override
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Size get preferredSize => const Size.fromHeight(kToolbarHeight);
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@override
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Widget build(BuildContext context) {
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return AppBar(
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elevation: 0,
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automaticallyImplyLeading: false,
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backgroundColor:
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backgroundColor != null ?
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backgroundColor! :
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Theme.of(context).appBarTheme.backgroundColor,
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flexibleSpace: SafeArea(
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child: Container(
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padding: const EdgeInsets.only(right: 16),
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child: Row(
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children: <Widget>[
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showBack ?
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_backButton(context) :
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const SizedBox.shrink(),
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showBack ?
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const SizedBox(width: 2,) :
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const SizedBox(width: 15),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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title,
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],
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),
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),
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rightHandButton != null ?
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rightHandButton! :
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const SizedBox.shrink(),
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],
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),
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),
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),
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);
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}
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Widget _backButton(BuildContext context) {
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return IconButton(
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onPressed: () {
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if (beforeBack != null) {
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beforeBack!().then((dynamic) => Navigator.pop(context));
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return;
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}
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Navigator.pop(context);
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},
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icon: Icon(
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Icons.arrow_back,
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color: Theme.of(context).appBarTheme.iconTheme?.color,
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),
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);
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}
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}
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