145 lines
4.4 KiB
Dart
145 lines
4.4 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:stream_chat_flutter/src/attachment_actions_modal.dart';
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import 'package:stream_chat_flutter/src/stream_chat_theme.dart';
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import 'package:stream_chat_flutter/src/stream_svg_icon.dart';
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import 'package:stream_chat_flutter/src/theme/themes.dart';
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import 'package:stream_chat_flutter_core/stream_chat_flutter_core.dart';
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/// Header/AppBar widget for media display screen
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class GalleryHeader extends StatelessWidget implements PreferredSizeWidget {
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/// Creates a channel header
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const GalleryHeader({
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Key? key,
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required this.message,
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this.currentIndex = 0,
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this.showBackButton = true,
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this.onBackPressed,
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this.onShowMessage,
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this.onTitleTap,
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this.onImageTap,
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this.userName = '',
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this.sentAt = '',
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this.backgroundColor,
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}) : preferredSize = const Size.fromHeight(kToolbarHeight),
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super(key: key);
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/// True if this header shows the leading back button
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final bool showBackButton;
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/// Callback to call when pressing the back button.
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/// By default it calls [Navigator.pop]
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final VoidCallback? onBackPressed;
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/// Callback to call when pressing the show message button.
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final VoidCallback? onShowMessage;
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/// Callback to call when the header is tapped.
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final VoidCallback? onTitleTap;
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/// Callback to call when the image is tapped.
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final VoidCallback? onImageTap;
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/// Message which attachments are attached to
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final Message message;
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/// Username of sender
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final String userName;
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/// Text which connotes the time the message was sent
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final String sentAt;
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/// Stores the current index of media shown
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final int currentIndex;
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/// The background color of this [GalleryHeader].
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final Color? backgroundColor;
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@override
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Widget build(BuildContext context) {
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final galleryHeaderThemeData = GalleryHeaderTheme.of(context);
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final theme = Theme.of(context);
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return AppBar(
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toolbarTextStyle: theme.textTheme.bodyText2,
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titleTextStyle: theme.textTheme.headline6,
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systemOverlayStyle: theme.brightness == Brightness.dark
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? SystemUiOverlayStyle.light
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: SystemUiOverlayStyle.dark,
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elevation: 1,
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leading: showBackButton
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? IconButton(
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icon: StreamSvgIcon.close(
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color: galleryHeaderThemeData.closeButtonColor,
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size: 24,
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),
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onPressed: onBackPressed,
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)
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: const SizedBox(),
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backgroundColor:
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backgroundColor ?? galleryHeaderThemeData.backgroundColor,
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actions: <Widget>[
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if (!message.isEphemeral)
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IconButton(
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icon: StreamSvgIcon.iconMenuPoint(
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color: galleryHeaderThemeData.iconMenuPointColor,
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),
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onPressed: () {
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_showMessageActionModalBottomSheet(context);
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},
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),
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],
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centerTitle: true,
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title: !message.isEphemeral
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? InkWell(
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onTap: onTitleTap,
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child: SizedBox(
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height: preferredSize.height,
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width: preferredSize.width,
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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mainAxisSize: MainAxisSize.min,
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children: <Widget>[
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Text(
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userName,
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style: galleryHeaderThemeData.titleTextStyle,
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),
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Text(
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sentAt,
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style: galleryHeaderThemeData.subtitleTextStyle,
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),
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],
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),
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),
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)
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: const SizedBox(),
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);
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}
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@override
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final Size preferredSize;
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void _showMessageActionModalBottomSheet(BuildContext context) async {
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final channel = StreamChannel.of(context).channel;
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final galleryHeaderThemeData =
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StreamChatTheme.of(context).galleryHeaderTheme;
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final result = await showDialog(
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useRootNavigator: false,
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context: context,
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barrierColor: galleryHeaderThemeData.bottomSheetBarrierColor,
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builder: (context) => StreamChannel(
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channel: channel,
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child: AttachmentActionsModal(
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message: message,
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currentIndex: currentIndex,
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onShowMessage: onShowMessage,
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),
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),
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);
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if (result != null) {
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Navigator.pop(context, result);
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}
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}
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}
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