Initial commit

lib/core/widgets/coming_soon_placeholder.dart

@@ -0,0 +1,15 @@
+import 'package:flutter/material.dart';
+
+class ComingSoon extends StatelessWidget {
+  const ComingSoon({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: Text(
+        "Coming Soon\u2122",
+        style: Theme.of(context).textTheme.titleLarge,
+      ),
+    );
+  }
+}

lib/core/widgets/confirm_button.dart

@@ -0,0 +1,70 @@
+import 'dart:math' as math;
+import 'dart:ui';
+
+import 'package:flutter/material.dart';
+
+class ElevatedConfirmationButton extends StatefulWidget {
+  factory ElevatedConfirmationButton.icon(BuildContext context,
+      {required void Function() onPressed, required Icon icon, required Widget label}) {
+    final double scale = MediaQuery.maybeOf(context)?.textScaleFactor ?? 1;
+    final double gap = scale <= 1 ? 8 : lerpDouble(8, 4, math.min(scale - 1, 1))!;
+    return ElevatedConfirmationButton(
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: <Widget>[icon, SizedBox(width: gap), Flexible(child: label)],
+      ),
+      onPressed: onPressed,
+    );
+  }
+
+  const ElevatedConfirmationButton({
+    Key? key,
+    this.color,
+    required this.onPressed,
+    required this.child,
+    this.confirmWidget = const Text("Confirm?"),
+  }) : super(key: key);
+
+  final Color? color;
+  final void Function()? onPressed;
+  final Widget child;
+  final Widget confirmWidget;
+  @override
+  State<ElevatedConfirmationButton> createState() => _ElevatedConfirmationButtonState();
+}
+
+class _ElevatedConfirmationButtonState extends State<ElevatedConfirmationButton> {
+  bool _clickedOnce = false;
+  double? _originalWidth;
+  final GlobalKey _originalWidgetKey = GlobalKey();
+  @override
+  Widget build(BuildContext context) {
+    if (!_clickedOnce) {
+      return ElevatedButton(
+        key: _originalWidgetKey,
+        style: ButtonStyle(
+          backgroundColor: MaterialStateProperty.all(widget.color),
+        ),
+        onPressed: () {
+          _originalWidth =
+              (_originalWidgetKey.currentContext?.findRenderObject() as RenderBox).size.width;
+          setState(() => _clickedOnce = true);
+        },
+        child: widget.child,
+      );
+    } else {
+      return Builder(builder: (context) {
+        return SizedBox(
+          width: _originalWidth,
+          child: ElevatedButton(
+            style: ButtonStyle(
+              backgroundColor: MaterialStateProperty.all(widget.color),
+            ),
+            onPressed: widget.onPressed,
+            child: widget.confirmWidget,
+          ),
+        );
+      });
+    }
+  }
+}

lib/core/widgets/documents_list_loading_widget.dart

@@ -0,0 +1,86 @@
+import 'dart:math';
+
+import 'package:flutter/material.dart';
+import 'package:shimmer/shimmer.dart';
+
+class DocumentsListLoadingWidget extends StatelessWidget {
+  static const tags = ["    ", "            ", "      "];
+  static const titleLengths = <double>[double.infinity, 150.0, 200.0];
+  static const correspondentLengths = <double>[200.0, 300.0, 150.0];
+  static const fontSize = 16.0;
+
+  const DocumentsListLoadingWidget({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return SizedBox(
+      height: MediaQuery.of(context).size.height,
+      width: double.infinity,
+      child: Column(
+        mainAxisSize: MainAxisSize.max,
+        children: <Widget>[
+          Expanded(
+            child: Shimmer.fromColors(
+              baseColor: Theme.of(context).brightness == Brightness.light
+                  ? Colors.grey[300]!
+                  : Colors.grey[900]!,
+              highlightColor: Theme.of(context).brightness == Brightness.light
+                  ? Colors.grey[100]!
+                  : Colors.grey[600]!,
+              child: ListView.builder(
+                physics: const NeverScrollableScrollPhysics(),
+                itemBuilder: (context, index) {
+                  final r = Random(index);
+                  final tagCount = r.nextInt(tags.length + 1);
+                  final correspondentLength = correspondentLengths[
+                      r.nextInt(correspondentLengths.length - 1)];
+                  final titleLength =
+                      titleLengths[r.nextInt(titleLengths.length - 1)];
+                  return ListTile(
+                    isThreeLine: true,
+                    leading: Container(
+                      color: Colors.white,
+                      height: 50,
+                      width: 50,
+                    ),
+                    title: Container(
+                      padding: const EdgeInsets.symmetric(vertical: 2.0),
+                      width: correspondentLength,
+                      height: fontSize,
+                      color: Colors.white,
+                    ),
+                    subtitle: Padding(
+                      padding: const EdgeInsets.symmetric(vertical: 2.0),
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        mainAxisAlignment: MainAxisAlignment.spaceAround,
+                        children: [
+                          Container(
+                            padding: const EdgeInsets.symmetric(vertical: 2.0),
+                            height: fontSize,
+                            width: titleLength,
+                            color: Colors.white,
+                          ),
+                          Wrap(
+                            spacing: 2.0,
+                            children: List.generate(
+                              tagCount,
+                              (index) => Chip(
+                                label: Text(tags[r.nextInt(tags.length)]),
+                              ),
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  );
+                },
+                itemCount: 25,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/core/widgets/empty_state.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+
+class EmptyState extends StatelessWidget {
+  final String title;
+  final String subtitle;
+  final Widget? bottomChild;
+
+  const EmptyState({
+    Key? key,
+    required this.title,
+    required this.subtitle,
+    this.bottomChild,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    final size = MediaQuery.of(context).size;
+    return Column(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        SizedBox(
+          height: size.height / 3,
+          width: size.width / 3,
+          child: SvgPicture.asset("assets/images/empty-state.svg"),
+        ),
+        Column(
+          children: [
+            Text(
+              title,
+              style: Theme.of(context).textTheme.titleLarge?.copyWith(
+                    fontWeight: FontWeight.bold,
+                  ),
+            ),
+            Text(
+              subtitle,
+              style: Theme.of(context).textTheme.titleMedium,
+            ),
+          ],
+        ),
+        if (bottomChild != null) ...[bottomChild!] else ...[]
+      ],
+    );
+  }
+}

lib/core/widgets/expandable_floating_action_button.dart

@@ -0,0 +1,215 @@
+import 'dart:math' as math;
+
+import 'package:flutter/material.dart';
+
+@immutable
+class ExpandableFloatingActionButton extends StatefulWidget {
+  const ExpandableFloatingActionButton({
+    super.key,
+    this.initialOpen,
+    required this.distance,
+    required this.children,
+  });
+
+  final bool? initialOpen;
+  final double distance;
+  final List<Widget> children;
+
+  @override
+  State<ExpandableFloatingActionButton> createState() =>
+      _ExpandableFloatingActionButtonState();
+}
+
+class _ExpandableFloatingActionButtonState
+    extends State<ExpandableFloatingActionButton>
+    with SingleTickerProviderStateMixin {
+  late final AnimationController _controller;
+  late final Animation<double> _expandAnimation;
+  bool _open = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _open = widget.initialOpen ?? false;
+    _controller = AnimationController(
+      value: _open ? 1.0 : 0.0,
+      duration: const Duration(milliseconds: 250),
+      vsync: this,
+    );
+    _expandAnimation = CurvedAnimation(
+      curve: Curves.fastOutSlowIn,
+      reverseCurve: Curves.easeOutQuad,
+      parent: _controller,
+    );
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  void _toggle() {
+    setState(() {
+      _open = !_open;
+      if (_open) {
+        _controller.forward();
+      } else {
+        _controller.reverse();
+      }
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return SizedBox.expand(
+      child: Stack(
+        alignment: Alignment.bottomRight,
+        clipBehavior: Clip.none,
+        children: [
+          _buildTapToCloseFab(),
+          ..._buildExpandingActionButtons(),
+          _buildTapToOpenFab(),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildTapToCloseFab() {
+    return SizedBox(
+      width: 56.0,
+      height: 56.0,
+      child: Center(
+        child: Material(
+          shape: const CircleBorder(),
+          clipBehavior: Clip.antiAlias,
+          elevation: 4.0,
+          child: InkWell(
+            onTap: _toggle,
+            child: Padding(
+              padding: const EdgeInsets.all(8.0),
+              child: Icon(
+                Icons.close,
+                color: Theme.of(context).primaryColor,
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  List<Widget> _buildExpandingActionButtons() {
+    final children = <Widget>[];
+    final count = widget.children.length;
+    final step = 90.0 / (count - 1);
+    for (var i = 0, angleInDegrees = 0.0;
+        i < count;
+        i++, angleInDegrees += step) {
+      children.add(
+        _ExpandingActionButton(
+          directionInDegrees: angleInDegrees,
+          maxDistance: widget.distance,
+          progress: _expandAnimation,
+          child: widget.children[i],
+        ),
+      );
+    }
+    return children;
+  }
+
+  Widget _buildTapToOpenFab() {
+    return IgnorePointer(
+      ignoring: _open,
+      child: AnimatedContainer(
+        transformAlignment: Alignment.center,
+        transform: Matrix4.diagonal3Values(
+          _open ? 0.7 : 1.0,
+          _open ? 0.7 : 1.0,
+          1.0,
+        ),
+        duration: const Duration(milliseconds: 250),
+        curve: const Interval(0.0, 0.5, curve: Curves.easeOut),
+        child: AnimatedOpacity(
+          opacity: _open ? 0.0 : 1.0,
+          curve: const Interval(0.25, 1.0, curve: Curves.easeInOut),
+          duration: const Duration(milliseconds: 250),
+          child: FloatingActionButton(
+            onPressed: _toggle,
+            child: const Icon(Icons.create),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+@immutable
+class _ExpandingActionButton extends StatelessWidget {
+  const _ExpandingActionButton({
+    required this.directionInDegrees,
+    required this.maxDistance,
+    required this.progress,
+    required this.child,
+  });
+
+  final double directionInDegrees;
+  final double maxDistance;
+  final Animation<double> progress;
+  final Widget child;
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedBuilder(
+      animation: progress,
+      builder: (context, child) {
+        final offset = Offset.fromDirection(
+          directionInDegrees * (math.pi / 180.0),
+          progress.value * maxDistance,
+        );
+        return Positioned(
+          right: 4.0 + offset.dx,
+          bottom: 4.0 + offset.dy,
+          child: Transform.rotate(
+            angle: (1.0 - progress.value) * math.pi / 2,
+            child: child!,
+          ),
+        );
+      },
+      child: FadeTransition(
+        opacity: progress,
+        child: child,
+      ),
+    );
+  }
+}
+
+@immutable
+class ExpandableActionButton extends StatelessWidget {
+  const ExpandableActionButton({
+    super.key,
+    this.color,
+    this.onPressed,
+    required this.icon,
+  });
+
+  final VoidCallback? onPressed;
+  final Widget icon;
+  final Color? color;
+
+  @override
+  Widget build(BuildContext context) {
+    return SizedBox(
+      height: 48,
+      width: 48,
+      child: ElevatedButton(
+        onPressed: onPressed,
+        child: icon,
+        style: ButtonStyle(
+          padding: MaterialStateProperty.all(EdgeInsets.zero),
+          backgroundColor: MaterialStateProperty.all(color),
+        ),
+      ),
+    );
+  }
+}

lib/core/widgets/highlighted_text.dart

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+import 'dart:math';
+
+import 'package:flutter/material.dart';
+
+class HighlightedText extends StatelessWidget {
+  final String text;
+  final List<String> highlights;
+  final Color? color;
+  final TextStyle? style;
+  final bool caseSensitive;
+
+  final TextAlign textAlign;
+  final TextDirection? textDirection;
+  final TextOverflow overflow;
+  final double textScaleFactor;
+  final int? maxLines;
+  final StrutStyle? strutStyle;
+  final TextWidthBasis textWidthBasis;
+  final TextHeightBehavior? textHeightBehavior;
+
+  const HighlightedText({
+    super.key,
+    required this.text,
+    required this.highlights,
+    this.style,
+    this.color = Colors.yellowAccent,
+    this.caseSensitive = true,
+    this.textAlign = TextAlign.start,
+    this.textDirection = TextDirection.ltr,
+    this.overflow = TextOverflow.clip,
+    this.textScaleFactor = 1.0,
+    this.maxLines,
+    this.strutStyle,
+    this.textWidthBasis = TextWidthBasis.parent,
+    this.textHeightBehavior,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    if (text.isEmpty || highlights.isEmpty || highlights.contains('')) {
+      return SelectableText.rich(
+        _normalSpan(text, context),
+        key: key,
+        textAlign: textAlign,
+        textDirection: textDirection,
+        textScaleFactor: textScaleFactor,
+        maxLines: maxLines,
+        strutStyle: strutStyle,
+        textWidthBasis: textWidthBasis,
+        textHeightBehavior: textHeightBehavior,
+        style: TextStyle(overflow: overflow),
+      );
+    }
+
+    return SelectableText.rich(
+      TextSpan(children: _buildChildren(context)),
+      key: key,
+      textAlign: textAlign,
+      textDirection: textDirection,
+      textScaleFactor: textScaleFactor,
+      maxLines: maxLines,
+      strutStyle: strutStyle,
+      textWidthBasis: textWidthBasis,
+      textHeightBehavior: textHeightBehavior,
+      style: TextStyle(overflow: overflow),
+    );
+  }
+
+  List<TextSpan> _buildChildren(BuildContext context) {
+    List<TextSpan> _spans = [];
+    int _start = 0;
+
+    String _text = caseSensitive ? text : text.toLowerCase();
+    List<String> _highlights =
+        caseSensitive ? highlights : highlights.map((e) => e.toLowerCase()).toList();
+
+    while (true) {
+      Map<int, String> _highlightsMap = {}; //key (index), value (highlight).
+
+      for (final h in _highlights) {
+        final idx = _text.indexOf(h, _start);
+        if (idx >= 0) {
+          _highlightsMap.putIfAbsent(_text.indexOf(h, _start), () => h);
+        }
+      }
+
+      if (_highlightsMap.isNotEmpty) {
+        int _currentIndex = _highlightsMap.keys.reduce(min);
+        String _currentHighlight = text.substring(
+          _currentIndex,
+          _currentIndex + _highlightsMap[_currentIndex]!.length,
+        );
+
+        if (_currentIndex == _start) {
+          _spans.add(_highlightSpan(_currentHighlight));
+          _start += _currentHighlight.length;
+        } else {
+          _spans.add(_normalSpan(text.substring(_start, _currentIndex), context));
+          _spans.add(_highlightSpan(_currentHighlight));
+          _start = _currentIndex + _currentHighlight.length;
+        }
+      } else {
+        _spans.add(_normalSpan(text.substring(_start, text.length), context));
+        break;
+      }
+    }
+    return _spans;
+  }
+
+  TextSpan _highlightSpan(String value) {
+    return TextSpan(
+      text: value,
+      style: style?.copyWith(
+        backgroundColor: color,
+      ),
+    );
+  }
+
+  TextSpan _normalSpan(String value, BuildContext context) {
+    return TextSpan(
+      text: value,
+      style: style ?? Theme.of(context).textTheme.bodyText2,
+    );
+  }
+}

lib/core/widgets/offline_banner.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_paperless_mobile/generated/l10n.dart';
+
+class OfflineBanner extends StatelessWidget with PreferredSizeWidget {
+  const OfflineBanner({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      color: Theme.of(context).disabledColor,
+      child: Row(
+        mainAxisAlignment: MainAxisAlignment.center,
+        crossAxisAlignment: CrossAxisAlignment.center,
+        children: [
+          const Padding(
+            padding: EdgeInsets.symmetric(horizontal: 8.0),
+            child: Icon(
+              Icons.cloud_off,
+              size: 24,
+            ),
+          ),
+          Text(S.of(context).genericMessageOfflineText),
+        ],
+      ),
+    );
+  }
+
+  @override
+  Size get preferredSize => const Size.fromHeight(24);
+}

lib/core/widgets/offline_widget.dart

@@ -0,0 +1,23 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_paperless_mobile/generated/l10n.dart';
+
+class OfflineWidget extends StatelessWidget {
+  const OfflineWidget({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.all(16.0),
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(Icons.mood_bad, size: (Theme.of(context).iconTheme.size ?? 24) * 3),
+          Text(
+            S.of(context).offlineWidgetText,
+            textAlign: TextAlign.center,
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/core/widgets/paperless_logo.dart

@@ -0,0 +1,23 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+
+class PaperlessLogo extends StatelessWidget {
+  final double? height;
+  final double? width;
+  const PaperlessLogo({Key? key, this.height, this.width}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      constraints: BoxConstraints(
+        maxHeight: height ?? Theme.of(context).iconTheme.size ?? 32,
+        maxWidth: width ?? Theme.of(context).iconTheme.size ?? 32,
+      ),
+      padding: const EdgeInsets.only(right: 8),
+      child: SvgPicture.asset(
+        "assets/logo/paperless_ng_logo_light.svg",
+        color: Theme.of(context).primaryColor,
+      ),
+    );
+  }
+}