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MrbWebLibre/app/lib/features/geckoview/features/browser/presentation/screens/browser.dart
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Dart

/*
* Copyright (c) 2024-2025 Fabian Freund.
*
* This file is part of WebLibre
* (see https://weblibre.eu).
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:go_router/go_router.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:weblibre/core/providers/global_drop.dart';
import 'package:weblibre/core/routing/routes.dart';
import 'package:weblibre/data/models/drag_data.dart';
import 'package:weblibre/extensions/media_query.dart';
import 'package:weblibre/features/geckoview/domain/controllers/bottom_sheet.dart';
import 'package:weblibre/features/geckoview/domain/controllers/overlay.dart';
import 'package:weblibre/features/geckoview/domain/entities/states/tab.dart';
import 'package:weblibre/features/geckoview/domain/providers.dart';
import 'package:weblibre/features/geckoview/domain/providers/selected_tab.dart';
import 'package:weblibre/features/geckoview/domain/providers/tab_list.dart';
import 'package:weblibre/features/geckoview/domain/providers/tab_session.dart';
import 'package:weblibre/features/geckoview/domain/providers/tab_state.dart';
import 'package:weblibre/features/geckoview/domain/repositories/tab.dart';
import 'package:weblibre/features/geckoview/features/browser/domain/entities/sheet.dart';
import 'package:weblibre/features/geckoview/features/browser/presentation/controllers/tree_view.dart';
import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/browser_modules/bottom_app_bar.dart';
import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/browser_modules/browser_view.dart';
import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/sheets/view_tab.dart';
import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/sheets/view_tabs.dart';
import 'package:weblibre/features/geckoview/features/contextmenu/extensions/hit_result.dart';
import 'package:weblibre/features/geckoview/features/find_in_page/presentation/widgets/find_in_page.dart';
import 'package:weblibre/features/geckoview/features/readerview/presentation/controllers/readerable.dart';
import 'package:weblibre/features/geckoview/features/readerview/presentation/widgets/reader_appearance_button.dart';
import 'package:weblibre/features/user/domain/repositories/general_settings.dart';
import 'package:weblibre/utils/ui_helper.dart' as ui_helper;
class BrowserScreen extends HookConsumerWidget {
Duration get _backButtonPressTimeout => const Duration(seconds: 2);
const BrowserScreen({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final eventService = ref.watch(eventServiceProvider);
final displayedSheet = ref.watch(bottomSheetControllerProvider);
final overlayBuilder = ref.watch(overlayControllerProvider);
final tabInFullScreen = ref.watch(
selectedTabStateProvider.select((value) => value?.isFullScreen ?? false),
);
final lastBackButtonPress = useRef<DateTime?>(null);
final overlayController = useOverlayPortalController();
ref.listen(overlayControllerProvider, (previous, next) {
if (next != null) {
overlayController.show();
} else {
overlayController.hide();
}
});
useOnStreamChange(
eventService.longPressEvent,
onData: (event) async {
await ContextMenuRoute(event.hitResult.toJson()).push(context);
},
);
final themeData = useMemoized(
() => Theme.of(context).copyWith(
bottomSheetTheme: BottomSheetThemeData(
constraints: BoxConstraints(
maxWidth:
MediaQuery.of(context).size.width -
math.max(
MediaQuery.of(context).padding.left * 2,
MediaQuery.of(context).padding.right * 2,
),
),
),
),
[],
);
bool dismissOnThreshold(DraggableScrollableNotification notification) {
if (!context.mounted) return false;
if (notification.extent <= 0.1) {
ref.read(bottomSheetControllerProvider.notifier).dismiss();
return true;
} else {
ref.read(bottomSheetExtendProvider.notifier).add(notification.extent);
}
return false;
}
return PopScope(
//We need this for BackButtonListener to work downstream
//No direct pop result will be handled here
canPop: false,
child: Theme(
data: themeData,
child: Scaffold(
extendBodyBehindAppBar: tabInFullScreen,
bottomNavigationBar: HookConsumer(
builder: (context, ref, child) {
final tabId = ref.watch(selectedTabProvider);
final displayedSheet = ref.watch(bottomSheetControllerProvider);
final tabInFullScreen = ref.watch(
selectedTabStateProvider.select(
(value) => value?.isFullScreen ?? false,
),
);
final autoHideTabBar = ref.watch(
generalSettingsWithDefaultsProvider.select(
(value) => value.autoHideTabBar,
),
);
if (!autoHideTabBar) {
return Visibility(
visible: !tabInFullScreen,
child: BrowserBottomAppBar(displayedSheet: displayedSheet),
);
}
final hidden = useState(false);
final diffAcc = useRef(0.0);
useEffect(() {
hidden.value = false;
diffAcc.value = 0.0;
return null;
}, [tabId]);
ref.listen(
tabStateProvider(tabId).select((value) => value?.isLoading),
(previous, next) {
if (next == true) {
hidden.value = false;
diffAcc.value = 0.0;
}
},
);
ref.listen(
tabStateProvider(tabId).select((value) => value?.historyState),
(previous, next) {
if (next != null && previous != null) {
if (previous != next) {
hidden.value = false;
diffAcc.value = 0.0;
}
}
},
);
ref.listen(
tabScrollYProvider(tabId, const Duration(milliseconds: 50)),
(previous, next) {
if (previous?.valueOrNull != null &&
next.valueOrNull != null) {
final diff = previous!.value! - next.value!;
if (diff < 0) {
diffAcc.value += diff;
if (diffAcc.value.abs() > kToolbarHeight * 2) {
hidden.value = true;
}
} else if (diff > 0) {
diffAcc.value = 0.0;
hidden.value = false;
}
}
},
);
return Visibility(
visible: !tabInFullScreen && !hidden.value,
child: BrowserBottomAppBar(displayedSheet: displayedSheet),
);
},
),
body: DragTarget<TabDragData>(
onMove: (details) {
ref
.read(willAcceptDropProvider.notifier)
.setData(DeleteDropData(details.data.tabId));
},
onLeave: (data) {
ref.read(willAcceptDropProvider.notifier).clear();
},
onAcceptWithDetails: (details) async {
ref.read(willAcceptDropProvider.notifier).clear();
await ref
.read(tabRepositoryProvider.notifier)
.closeTab(details.data.tabId);
},
builder: (context, _, _) {
return OverlayPortal(
controller: overlayController,
overlayChildBuilder: (context) {
return overlayBuilder!.call(context);
},
child: Listener(
onPointerDown: (displayedSheet != null)
? (_) {
ref
.read(bottomSheetControllerProvider.notifier)
.dismiss();
}
: null,
child: BackButtonListener(
onBackButtonPressed: () async {
final tabState = ref.read(selectedTabStateProvider);
final tabCount = ref.read(
tabListProvider.select((tabs) => tabs.value.length),
);
//Don't do anything if a child route is active
if (GoRouterState.of(context).topRoute?.name !=
BrowserRoute.name) {
return false;
}
if (displayedSheet != null) {
ref
.read(bottomSheetControllerProvider.notifier)
.dismiss();
return true;
}
if (overlayBuilder != null) {
ref.read(overlayControllerProvider.notifier).dismiss();
return true;
}
if (tabState?.isFullScreen == true) {
await ref
.read(selectedTabSessionNotifierProvider)
.exitFullscreen();
return true;
}
if (tabState?.isLoading == true) {
lastBackButtonPress.value = null;
final controller = ref.read(
selectedTabSessionNotifierProvider,
);
await controller.stopLoading();
return true;
} else if (tabState?.readerableState.active == true) {
lastBackButtonPress.value = null;
await ref
.read(readerableScreenControllerProvider.notifier)
.toggleReaderView(false);
return true;
} else if (tabState?.historyState.canGoBack == true) {
lastBackButtonPress.value = null;
final controller = ref.read(
selectedTabSessionNotifierProvider,
);
await controller.goBack();
return true;
}
//Go router has routes to go back to
if (context.canPop()) {
return true;
}
if (ref
.read(tabRepositoryProvider.notifier)
.hasLaunchedFromIntent(tabState?.id)) {
//Mark back as unhandled and navigator will pop
await SystemNavigator.pop();
return false;
}
if (lastBackButtonPress.value != null &&
DateTime.now().difference(
lastBackButtonPress.value!,
) <
_backButtonPressTimeout) {
lastBackButtonPress.value = null;
if (tabState != null && tabCount > 1) {
await ref
.read(tabRepositoryProvider.notifier)
.closeTab(tabState.id);
return true;
} else {
//Mark back as unhandled and navigator will pop
await SystemNavigator.pop();
return false;
}
} else {
lastBackButtonPress.value = DateTime.now();
ui_helper.showTabBackButtonMessage(
context,
tabCount,
_backButtonPressTimeout,
);
return true;
}
},
child: _BrowserView(
sheetDisplayed: displayedSheet != null,
isFullscreen: tabInFullScreen,
),
),
),
);
},
),
floatingActionButton: ReaderAppearanceButton(),
bottomSheet: (displayedSheet != null)
? switch (displayedSheet) {
ViewTabsSheet() =>
NotificationListener<DraggableScrollableNotification>(
key: ValueKey(displayedSheet),
onNotification: dismissOnThreshold,
child: _ViewTabsSheet(
maxChildSize: MediaQuery.of(context).relativeSafeArea(),
),
),
final EditUrlSheet parameter =>
NotificationListener<DraggableScrollableNotification>(
key: ValueKey(parameter),
onNotification: dismissOnThreshold,
child: _ViewUrlSheet(
initialTabState: parameter.tabState,
maxChildSize: MediaQuery.of(context).relativeSafeArea(),
),
),
}
: null,
),
),
);
}
}
class _BrowserView extends StatelessWidget {
final bool sheetDisplayed;
final bool isFullscreen;
const _BrowserView({
required this.sheetDisplayed,
required this.isFullscreen,
});
@override
Widget build(BuildContext context) {
return Stack(
children: [
SafeArea(
top: !isFullscreen,
right: !isFullscreen,
bottom: !isFullscreen,
left: !isFullscreen,
child: Stack(
children: [
const BrowserView(),
Positioned(
bottom: 0,
left: 0,
right: 0,
child: Consumer(
builder: (context, ref, child) {
final value = ref.watch(
selectedTabStateProvider.select((state) {
if (state?.isLoading == true) {
return state?.progress ?? 100;
}
//When not loading we assumed finished
return 100;
}),
);
return Visibility(
visible: value < 100,
child: LinearProgressIndicator(value: value / 100),
);
},
),
),
Positioned(
bottom: 0,
left: 0,
right: 0,
child: Consumer(
builder: (context, ref, child) {
final value = ref.watch(
selectedTabStateProvider.select(
(state) => EdgeInsets.only(
bottom:
(state?.isLoading == true &&
state?.progress != null &&
state!.progress < 100)
? 4.0
: 0.0,
),
),
);
final tabId = ref.watch(selectedTabProvider);
if (tabId == null) {
return const SizedBox.shrink();
}
return FindInPageWidget(tabId: tabId, padding: value);
},
),
),
],
),
),
if (sheetDisplayed)
ModalBarrier(
color: Theme.of(context).dialogTheme.barrierColor ?? Colors.black54,
),
],
);
}
}
class _ViewUrlSheet extends HookConsumerWidget {
final double maxChildSize;
final TabState initialTabState;
const _ViewUrlSheet({required this.initialTabState, this.maxChildSize = 1.0});
@override
Widget build(BuildContext context, WidgetRef ref) {
final draggableScrollableController = useDraggableScrollableController();
final initialHeight = 172.0 / MediaQuery.of(context).size.height;
return DraggableScrollableSheet(
controller: draggableScrollableController,
expand: false,
initialChildSize: initialHeight,
minChildSize: 0.1,
maxChildSize: maxChildSize,
builder: (context, scrollController) {
return ClipRRect(
borderRadius: const BorderRadius.only(
topLeft: Radius.circular(28),
topRight: Radius.circular(28),
),
child: ViewTabSheetWidget(
initialTabState: initialTabState,
sheetScrollController: scrollController,
draggableScrollableController: draggableScrollableController,
onClose: () {
ref.read(bottomSheetControllerProvider.notifier).dismiss();
},
initialHeight: initialHeight,
),
);
},
);
}
}
class _ViewTabsSheet extends HookConsumerWidget {
final double maxChildSize;
const _ViewTabsSheet({this.maxChildSize = 1.0});
@override
Widget build(BuildContext context, WidgetRef ref) {
final draggableScrollableController = useDraggableScrollableController();
final treeModeEnabled = ref.watch(treeViewControllerProvider);
return DraggableScrollableSheet(
controller: draggableScrollableController,
expand: false,
minChildSize: 0.1,
maxChildSize: maxChildSize,
builder: (context, scrollController) {
return ClipRRect(
borderRadius: const BorderRadius.only(
topLeft: Radius.circular(28),
topRight: Radius.circular(28),
),
child: treeModeEnabled
? ViewTabTreesSheetWidget(
sheetScrollController: scrollController,
onClose: () {
ref.read(bottomSheetControllerProvider.notifier).dismiss();
},
)
: ViewTabsSheetWidget(
sheetScrollController: scrollController,
draggableScrollableController: draggableScrollableController,
onClose: () {
ref.read(bottomSheetControllerProvider.notifier).dismiss();
},
),
);
},
);
}
}