info: improved display for XMP

CHANGELOG.md

@@ -10,6 +10,7 @@ All notable changes to this project will be documented in this file.
 - reverse filters to filter out/in
 - Collection: selection edit actions available as quick actions
 - Albums: group by content type
+- Info: improved display for XMP
 - Stats: top albums
 - Stats: open full top listings
 - Slideshow: option for no transition

lib/utils/xmp_utils.dart

@@ -10,6 +10,7 @@ class Namespaces {
   static const container = 'http://ns.google.com/photos/1.0/container/';
   static const creatorAtom = 'http://ns.adobe.com/creatorAtom/1.0/';
   static const crd = 'http://ns.adobe.com/camera-raw-defaults/1.0/';
+  static const crlcp = 'http://ns.adobe.com/camera-raw-embedded-lens-profile/1.0/';
   static const crs = 'http://ns.adobe.com/camera-raw-settings/1.0/';
   static const crss = 'http://ns.adobe.com/camera-raw-saved-settings/1.0/';
   static const darktable = 'http://darktable.sf.net/';
@@ -30,7 +31,8 @@ class Namespaces {
   static const gettyImagesGift = 'http://xmp.gettyimages.com/gift/1.0/';
   static const gFocus = 'http://ns.google.com/photos/1.0/focus/';
   static const gImage = 'http://ns.google.com/photos/1.0/image/';
-  static const gimp = 'http://www.gimp.org/ns/2.10/';
+  static const gimp210 = 'http://www.gimp.org/ns/2.10/';
+  static const gimpXmp = 'http://www.gimp.org/xmp/';
   static const gPano = 'http://ns.google.com/photos/1.0/panorama/';
   static const gSpherical = 'http://ns.google.com/videos/1.0/spherical/';
   static const illustrator = 'http://ns.adobe.com/illustrator/1.0/';
@@ -56,6 +58,7 @@ class Namespaces {
   static const plus = 'http://ns.useplus.org/ldf/xmp/1.0/';
   static const pmtm = 'http://www.hdrsoft.com/photomatix_settings01';
   static const rdf = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
+  static const stCamera = 'http://ns.adobe.com/photoshop/1.0/camera-profile';
   static const stEvt = 'http://ns.adobe.com/xap/1.0/sType/ResourceEvent#';
   static const stRef = 'http://ns.adobe.com/xap/1.0/sType/ResourceRef#';
   static const tiff = 'http://ns.adobe.com/tiff/1.0/';
@@ -96,7 +99,8 @@ class Namespaces {
     gDepth: 'Google Depth',
     gFocus: 'Google Focus',
     gImage: 'Google Image',
-    gimp: 'GIMP',
+    gimp210: 'GIMP 2.10',
+    gimpXmp: 'GIMP',
     gPano: 'Google Panorama',
     gSpherical: 'Google Spherical',
     illustrator: 'Illustrator',
@@ -122,6 +126,7 @@ class Namespaces {
     xmpBJ: 'Basic Job Ticket',
     xmpDM: 'Dynamic Media',
     xmpMM: 'Media Management',
+    xmpNote: 'Note',
     xmpRights: 'Rights Management',
     xmpTPg: 'Paged-Text',
   };

lib/widgets/viewer/info/metadata/xmp_card.dart

@@ -0,0 +1,157 @@
+import 'dart:math';
+
+import 'package:aves/theme/durations.dart';
+import 'package:aves/theme/icons.dart';
+import 'package:aves/utils/constants.dart';
+import 'package:aves/widgets/common/basic/multi_cross_fader.dart';
+import 'package:aves/widgets/common/extensions/build_context.dart';
+import 'package:aves/widgets/common/identity/highlight_title.dart';
+import 'package:aves/widgets/viewer/info/common.dart';
+import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
+import 'package:collection/collection.dart';
+import 'package:flutter/material.dart';
+import 'package:tuple/tuple.dart';
+
+typedef XmpExtractedCard = Tuple2<Map<String, XmpProp>, List<XmpCardData>?>;
+
+class XmpCard extends StatefulWidget {
+  final String title;
+  late final XmpExtractedCard? directStruct;
+  late final List<XmpExtractedCard>? indexedStructs;
+  final String Function(XmpProp prop) formatValue;
+  final Map<String, InfoValueSpanBuilder> Function(int? index)? spanBuilders;
+
+  XmpCard({
+    super.key,
+    required this.title,
+    required Map<int?, XmpExtractedCard> structByIndex,
+    required this.formatValue,
+    this.spanBuilders,
+  }) {
+    directStruct = structByIndex[null];
+
+    final length = structByIndex.keys.whereNotNull().fold(0, max);
+    indexedStructs = length > 0 ? [for (var i = 0; i < length; i++) structByIndex[i + 1] ?? const Tuple2({}, null)] : null;
+  }
+
+  @override
+  State<XmpCard> createState() => _XmpCardState();
+}
+
+class _XmpCardState extends State<XmpCard> {
+  final ValueNotifier<int> _indexNotifier = ValueNotifier(0);
+
+  List<XmpExtractedCard>? get indexedStructs => widget.indexedStructs;
+
+  bool get isIndexed => indexedStructs != null;
+
+  int get indexedStructCount => indexedStructs?.length ?? 0;
+
+  @override
+  void initState() {
+    super.initState();
+    if (isIndexed) {
+      _indexNotifier.value = indexedStructCount - 1;
+    }
+  }
+
+  @override
+  void didUpdateWidget(covariant XmpCard oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (_indexNotifier.value >= indexedStructCount) {
+      _indexNotifier.value = indexedStructCount - 1;
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final _isIndexed = isIndexed;
+
+    return Container(
+      decoration: BoxDecoration(
+        border: Border.all(
+          color: Theme.of(context).colorScheme.onPrimary.withOpacity(.2),
+        ),
+        borderRadius: const BorderRadius.all(Radius.circular(4)),
+      ),
+      child: ValueListenableBuilder<int>(
+        valueListenable: _indexNotifier,
+        builder: (context, index, child) {
+          final data = _isIndexed ? indexedStructs![index] : widget.directStruct!;
+          final props = data.item1.entries.map((kv) => XmpProp(kv.key, kv.value.value)).toList()..sort();
+          final cards = data.item2;
+
+          return Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Padding(
+                padding: const EdgeInsets.only(left: 8, top: 8, right: 8),
+                child: Row(
+                  crossAxisAlignment: CrossAxisAlignment.center,
+                  children: [
+                    Expanded(
+                      child: HighlightTitle(
+                        title: widget.title,
+                        selectable: true,
+                        showHighlight: false,
+                      ),
+                    ),
+                    if (_isIndexed) ...[
+                      IconButton(
+                        visualDensity: VisualDensity.compact,
+                        icon: const Icon(AIcons.previous),
+                        onPressed: index > 0 ? () => _setIndex(index - 1) : null,
+                        tooltip: context.l10n.previousTooltip,
+                      ),
+                      HighlightTitle(
+                        title: '${index + 1}',
+                        showHighlight: false,
+                      ),
+                      IconButton(
+                        visualDensity: VisualDensity.compact,
+                        icon: const Icon(AIcons.next),
+                        onPressed: index < indexedStructCount - 1 ? () => _setIndex(index + 1) : null,
+                        tooltip: context.l10n.nextTooltip,
+                      ),
+                    ]
+                  ],
+                ),
+              ),
+              MultiCrossFader(
+                duration: Durations.xmpStructArrayCardTransition,
+                sizeCurve: Curves.easeOutBack,
+                alignment: AlignmentDirectional.topStart,
+                child: Padding(
+                  // add padding at this level (instead of the column level)
+                  // so that the crossfader can animate the content size
+                  // without clipping the text
+                  padding: const EdgeInsets.only(left: 8, right: 8, bottom: 8),
+                  child: InfoRowGroup(
+                    info: Map.fromEntries(props.map((prop) => MapEntry(prop.displayKey, widget.formatValue(prop)))),
+                    maxValueLength: Constants.infoGroupMaxValueLength,
+                    spanBuilders: widget.spanBuilders?.call(_isIndexed ? index + 1 : null),
+                  ),
+                ),
+              ),
+              if (cards != null)
+                ...cards.where((v) => !v.isEmpty).map((card) {
+                  final spanBuilders = card.spanBuilders;
+                  return Padding(
+                    padding: const EdgeInsets.symmetric(vertical: 4, horizontal: 8),
+                    child: XmpCard(
+                      title: card.title,
+                      structByIndex: card.data,
+                      formatValue: widget.formatValue,
+                      spanBuilders: spanBuilders != null ? (index) => spanBuilders(index, card.data[index]!.item1) : null,
+                    ),
+                  );
+                }),
+            ],
+          );
+        },
+      ),
+    );
+  }
+
+  void _setIndex(int index) => _indexNotifier.value = index.clamp(0, indexedStructCount - 1);
+}

lib/widgets/viewer/info/metadata/xmp_namespaces.dart

@@ -5,17 +5,12 @@ import 'package:aves/utils/string_utils.dart';
 import 'package:aves/utils/xmp_utils.dart';
 import 'package:aves/widgets/common/identity/highlight_title.dart';
 import 'package:aves/widgets/viewer/info/common.dart';
+import 'package:aves/widgets/viewer/info/metadata/xmp_card.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_ns/crs.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_ns/darktable.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_ns/dwc.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_ns/exif.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_ns/google.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_ns/iptc.dart';
+import 'package:aves/widgets/viewer/info/metadata/xmp_ns/misc.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_ns/iptc4xmpext.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_ns/microsoft.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_ns/mwg.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_ns/photoshop.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_ns/plus.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_ns/tiff.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_ns/xmp.dart';
 import 'package:collection/collection.dart';
@@ -23,6 +18,7 @@ import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:tuple/tuple.dart';
 
 @immutable
 class XmpNamespace extends Equatable {
@@ -70,8 +66,6 @@ class XmpNamespace extends Equatable {
         return XmpBasicNamespace(nsPrefix, rawProps);
       case Namespaces.xmpMM:
         return XmpMMNamespace(nsPrefix, rawProps);
-      case Namespaces.xmpNote:
-        return XmpNoteNamespace(nsPrefix, rawProps);
       default:
         return XmpNamespace(nsUri, nsPrefix, rawProps);
     }
@@ -79,26 +73,37 @@ class XmpNamespace extends Equatable {
 
   String get displayTitle => Namespaces.nsTitles[nsUri] ?? (nsPrefix.isEmpty ? nsUri : '${nsPrefix.substring(0, nsPrefix.length - 1)} ($nsUri)');
 
-  Map<String, String> get buildProps => rawProps;
-
   List<Widget> buildNamespaceSection(BuildContext context) {
-    final props = buildProps.entries
+    final props = rawProps.entries
         .map((kv) {
           final prop = XmpProp(kv.key, kv.value);
-          return extractData(prop) ? null : prop;
+          var extracted = false;
+          cards.forEach((card) => extracted |= card.extract(prop));
+          return extracted ? null : prop;
         })
         .whereNotNull()
         .toList()
-      ..sort((a, b) => compareAsciiUpperCaseNatural(a.displayKey, b.displayKey));
+      ..sort();
 
     final content = [
       if (props.isNotEmpty)
         InfoRowGroup(
-          info: Map.fromEntries(props.map((prop) => MapEntry(prop.displayKey, formatValue(prop)))),
+          info: Map.fromEntries(props.map((v) => MapEntry(v.displayKey, formatValue(v)))),
           maxValueLength: Constants.infoGroupMaxValueLength,
           spanBuilders: linkifyValues(props),
         ),
-      ...buildFromExtractedData(),
+      ...cards.where((v) => !v.isEmpty).map((card) {
+        final spanBuilders = card.spanBuilders;
+        return Padding(
+          padding: const EdgeInsets.only(top: 8),
+          child: XmpCard(
+            title: card.title,
+            structByIndex: card.data,
+            formatValue: formatValue,
+            spanBuilders: spanBuilders != null ? (index) => spanBuilders(index, card.data[index]!.item1) : null,
+          ),
+        );
+      }),
     ];
 
     return content.isNotEmpty
@@ -117,38 +122,14 @@ class XmpNamespace extends Equatable {
         : [];
   }
 
-  bool extractStruct(XmpProp prop, RegExp pattern, Map<String, String> store) {
+  List<XmpCardData> get cards => [];
-    final matches = pattern.allMatches(prop.path);
-    if (matches.isEmpty) return false;
-
-    final match = matches.first;
-    final field = match.group(1)!;
-    store[field] = formatValue(prop);
-    return true;
-  }
-
-  bool extractIndexedStruct(XmpProp prop, RegExp pattern, Map<int, Map<String, String>> store) {
-    final matches = pattern.allMatches(prop.path);
-    if (matches.isEmpty) return false;
-
-    final match = matches.first;
-    final index = int.parse(match.group(1)!);
-    final field = match.group(2)!;
-    final fields = store.putIfAbsent(index, () => <String, String>{});
-    fields[field] = formatValue(prop);
-    return true;
-  }
-
-  bool extractData(XmpProp prop) => false;
-
-  List<Widget> buildFromExtractedData() => [];
 
   String formatValue(XmpProp prop) => prop.value;
 
   Map<String, InfoValueSpanBuilder> linkifyValues(List<XmpProp> props) => {};
 }
 
-class XmpProp {
+class XmpProp implements Comparable<XmpProp> {
   final String path, value;
   final String displayKey;
 
@@ -165,6 +146,82 @@ class XmpProp {
         });
   }
 
+  @override
+  int compareTo(XmpProp other) => compareAsciiUpperCaseNatural(displayKey, other.displayKey);
+
   @override
   String toString() => '$runtimeType#${shortHash(this)}{path=$path, value=$value}';
 }
+
+class XmpCardData {
+  final String title;
+  final RegExp pattern;
+  final bool indexed;
+  final Map<String, InfoValueSpanBuilder> Function(int?, Map<String, XmpProp> data)? spanBuilders;
+  final List<XmpCardData>? cards;
+  final Map<int?, XmpExtractedCard> data = {};
+
+  bool get isEmpty => data.isEmpty && (cards?.every((card) => card.isEmpty) ?? true);
+
+  static final titlePattern = RegExp(r'(.*?)[\\/]');
+
+  XmpCardData(
+    this.pattern, {
+    String? title,
+    this.spanBuilders,
+    this.cards,
+  })  : indexed = pattern.pattern.contains(r'\[(\d+)\]'),
+        title = title ?? XmpProp.formatKey(titlePattern.firstMatch(pattern.pattern)!.group(1)!);
+
+  XmpCardData cloneEmpty() {
+    return XmpCardData(
+      pattern,
+      title: title,
+      spanBuilders: spanBuilders,
+      cards: cards?.map((v) => v.cloneEmpty()).toList(),
+    );
+  }
+
+  bool extract(XmpProp prop) => indexed ? _extractIndexedStruct(prop) : _extractDirectStruct(prop);
+
+  bool _extractDirectStruct(XmpProp prop) {
+    final matches = pattern.allMatches(prop.path);
+    if (matches.isEmpty) return false;
+
+    final match = matches.first;
+    final field = match.group(1)!;
+
+    final fields = data.putIfAbsent(null, () => Tuple2(<String, XmpProp>{}, cards?.map((v) => v.cloneEmpty()).toList()));
+    final _cards = fields.item2;
+    if (_cards != null) {
+      final fieldProp = XmpProp(field, prop.value);
+      if (_cards.any((v) => v.extract(fieldProp))) {
+        return true;
+      }
+    }
+
+    fields.item1[field] = prop;
+    return true;
+  }
+
+  bool _extractIndexedStruct(XmpProp prop) {
+    final matches = pattern.allMatches(prop.path);
+    if (matches.isEmpty) return false;
+
+    final match = matches.first;
+    final index = int.parse(match.group(1)!);
+    final field = match.group(2)!;
+
+    final fields = data.putIfAbsent(index, () => Tuple2(<String, XmpProp>{}, cards?.map((v) => v.cloneEmpty()).toList()));
+    final _cards = fields.item2;
+    if (_cards != null) {
+      final fieldProp = XmpProp(field, prop.value);
+      if (_cards.any((v) => v.extract(fieldProp))) {
+        return true;
+      }
+    }
+
+    fields.item1[field] = prop;
+    return true;
+  }
+}

lib/widgets/viewer/info/metadata/xmp_ns/crs.dart

@@ -1,75 +1,50 @@
 import 'package:aves/utils/xmp_utils.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/widgets.dart';
 
 class XmpCrsNamespace extends XmpNamespace {
-  late final cgbcPattern = RegExp(nsPrefix + r'CircularGradientBasedCorrections\[(\d+)\]/(.*)');
-  late final gbcPattern = RegExp(nsPrefix + r'GradientBasedCorrections\[(\d+)\]/(.*)');
-  late final mgbcPattern = RegExp(nsPrefix + r'MaskGroupBasedCorrections\[(\d+)\]/(.*)');
-  late final pbcPattern = RegExp(nsPrefix + r'PaintBasedCorrections\[(\d+)\]/(.*)');
-  late final retouchAreasPattern = RegExp(nsPrefix + r'RetouchAreas\[(\d+)\]/(.*)');
-  late final lookPattern = RegExp(nsPrefix + r'Look/(.*)');
-  late final rmmiPattern = RegExp(nsPrefix + r'RangeMaskMapInfo/' + nsPrefix + r'RangeMaskMapInfo/(.*)');
-
-  final cgbc = <int, Map<String, String>>{};
-  final gbc = <int, Map<String, String>>{};
-  final mgbc = <int, Map<String, String>>{};
-  final pbc = <int, Map<String, String>>{};
-  final retouchAreas = <int, Map<String, String>>{};
-  final look = <String, String>{};
-  final rmmi = <String, String>{};
-
   XmpCrsNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.crs, nsPrefix, rawProps);
 
   @override
-  bool extractData(XmpProp prop) {
+  late final List<XmpCardData> cards = [
-    var hasStructs = extractStruct(prop, lookPattern, look);
+    XmpCardData(RegExp(nsPrefix + r'CircularGradientBasedCorrections\[(\d+)\]/(.*)')),
-    hasStructs |= extractStruct(prop, rmmiPattern, rmmi);
+    XmpCardData(
-    var hasIndexedStructs = extractIndexedStruct(prop, cgbcPattern, cgbc);
+      RegExp(nsPrefix + r'GradientBasedCorrections\[(\d+)\]/(.*)'),
-    hasIndexedStructs |= extractIndexedStruct(prop, gbcPattern, gbc);
+      cards: [
-    hasIndexedStructs |= extractIndexedStruct(prop, mgbcPattern, mgbc);
+        XmpCardData(RegExp(nsPrefix + r'CorrectionMasks\[(\d+)\]/(.*)')),
-    hasIndexedStructs |= extractIndexedStruct(prop, pbcPattern, pbc);
+        XmpCardData(RegExp(nsPrefix + r'CorrectionRangeMask/(.*)')),
-    hasIndexedStructs |= extractIndexedStruct(prop, retouchAreasPattern, retouchAreas);
+      ],
-    return hasStructs || hasIndexedStructs;
-  }
-
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (cgbc.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Circular Gradient Based Corrections',
-            structByIndex: cgbc,
     ),
-        if (gbc.isNotEmpty)
+    XmpCardData(
-          XmpStructArrayCard(
+      RegExp(nsPrefix + r'Look/(.*)'),
-            title: 'Gradient Based Corrections',
+      cards: [
-            structByIndex: gbc,
+        XmpCardData(RegExp(nsPrefix + r'Parameters/(.*)')),
+      ],
     ),
-        if (look.isNotEmpty)
+    XmpCardData(
-          XmpStructCard(
+      RegExp(nsPrefix + r'MaskGroupBasedCorrections\[(\d+)\]/(.*)'),
-            title: 'Look',
+      cards: [
-            struct: look,
+        XmpCardData(
+          RegExp(nsPrefix + r'CorrectionMasks\[(\d+)\]/(.*)'),
+          cards: [
+            XmpCardData(RegExp(nsPrefix + r'CorrectionRangeMask/(.*)')),
+            XmpCardData(RegExp(nsPrefix + r'Masks\[(\d+)\]/(.*)')),
+          ],
         ),
-        if (mgbc.isNotEmpty)
+      ],
-          XmpStructArrayCard(
-            title: 'Mask Group Based Corrections',
-            structByIndex: mgbc,
     ),
-        if (pbc.isNotEmpty)
+    XmpCardData(
-          XmpStructArrayCard(
+      RegExp(nsPrefix + r'PaintBasedCorrections\[(\d+)\]/(.*)'),
-            title: 'Paint Based Corrections',
+      cards: [
-            structByIndex: pbc,
+        XmpCardData(RegExp(nsPrefix + r'CorrectionMasks\[(\d+)\]/(.*)')),
+        XmpCardData(RegExp(nsPrefix + r'CorrectionRangeMask/(.*)')),
+      ],
     ),
-        if (rmmi.isNotEmpty)
+    XmpCardData(
-          XmpStructCard(
+      RegExp(nsPrefix + r'RetouchAreas\[(\d+)\]/(.*)'),
-            title: 'Range Mask Map Info',
+      cards: [
-            struct: rmmi,
+        XmpCardData(RegExp(nsPrefix + r'Masks\[(\d+)\]/(.*)')),
-          ),
+      ],
-        if (retouchAreas.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Retouch Areas',
-            structByIndex: retouchAreas,
     ),
+    XmpCardData(RegExp(nsPrefix + r'RangeMaskMapInfo/' + nsPrefix + r'RangeMaskMapInfo/(.*)')),
   ];
 }

lib/widgets/viewer/info/metadata/xmp_ns/darktable.dart

@@ -1,24 +0,0 @@
-import 'package:aves/utils/xmp_utils.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/material.dart';
-
-class XmpDarktableNamespace extends XmpNamespace {
-  late final historyPattern = RegExp(nsPrefix + r'history\[(\d+)\]/(.*)');
-
-  final history = <int, Map<String, String>>{};
-
-  XmpDarktableNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.darktable, nsPrefix, rawProps);
-
-  @override
-  bool extractData(XmpProp prop) => extractIndexedStruct(prop, historyPattern, history);
-
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (history.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'History',
-            structByIndex: history,
-          ),
-      ];
-}

lib/widgets/viewer/info/metadata/xmp_ns/dwc.dart

@@ -1,91 +0,0 @@
-import 'package:aves/utils/xmp_utils.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/widgets.dart';
-
-class XmpDwcNamespace extends XmpNamespace {
-  late final dcTermsLocationPattern = RegExp(nsPrefix + r'dctermsLocation/(.*)');
-  late final eventPattern = RegExp(nsPrefix + r'Event/(.*)');
-  late final geologicalContextPattern = RegExp(nsPrefix + r'GeologicalContext/(.*)');
-  late final identificationPattern = RegExp(nsPrefix + r'Identification/(.*)');
-  late final measurementOrFactPattern = RegExp(nsPrefix + r'MeasurementOrFact/(.*)');
-  late final occurrencePattern = RegExp(nsPrefix + r'Occurrence/(.*)');
-  late final recordPattern = RegExp(nsPrefix + r'Record/(.*)');
-  late final resourceRelationshipPattern = RegExp(nsPrefix + r'ResourceRelationship/(.*)');
-  late final taxonPattern = RegExp(nsPrefix + r'Taxon/(.*)');
-
-  final dcTermsLocation = <String, String>{};
-  final event = <String, String>{};
-  final identification = <String, String>{};
-  final geologicalContext = <String, String>{};
-  final measurementOrFact = <String, String>{};
-  final occurrence = <String, String>{};
-  final record = <String, String>{};
-  final resourceRelationship = <String, String>{};
-  final taxon = <String, String>{};
-
-  XmpDwcNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.dwc, nsPrefix, rawProps);
-
-  @override
-  bool extractData(XmpProp prop) {
-    var hasStructs = extractStruct(prop, dcTermsLocationPattern, dcTermsLocation);
-    hasStructs |= extractStruct(prop, eventPattern, event);
-    hasStructs |= extractStruct(prop, geologicalContextPattern, geologicalContext);
-    hasStructs |= extractStruct(prop, measurementOrFactPattern, measurementOrFact);
-    hasStructs |= extractStruct(prop, identificationPattern, identification);
-    hasStructs |= extractStruct(prop, occurrencePattern, occurrence);
-    hasStructs |= extractStruct(prop, recordPattern, record);
-    hasStructs |= extractStruct(prop, resourceRelationshipPattern, resourceRelationship);
-    hasStructs |= extractStruct(prop, taxonPattern, taxon);
-    return hasStructs;
-  }
-
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (dcTermsLocation.isNotEmpty)
-          XmpStructCard(
-            title: 'DC Terms Location',
-            struct: dcTermsLocation,
-          ),
-        if (event.isNotEmpty)
-          XmpStructCard(
-            title: 'Event',
-            struct: event,
-          ),
-        if (geologicalContext.isNotEmpty)
-          XmpStructCard(
-            title: 'Geological Context',
-            struct: geologicalContext,
-          ),
-        if (identification.isNotEmpty)
-          XmpStructCard(
-            title: 'Identification',
-            struct: identification,
-          ),
-        if (measurementOrFact.isNotEmpty)
-          XmpStructCard(
-            title: 'Measurement Or Fact',
-            struct: measurementOrFact,
-          ),
-        if (occurrence.isNotEmpty)
-          XmpStructCard(
-            title: 'Occurrence',
-            struct: occurrence,
-          ),
-        if (record.isNotEmpty)
-          XmpStructCard(
-            title: 'Record',
-            struct: record,
-          ),
-        if (resourceRelationship.isNotEmpty)
-          XmpStructCard(
-            title: 'Resource Relationship',
-            struct: resourceRelationship,
-          ),
-        if (taxon.isNotEmpty)
-          XmpStructCard(
-            title: 'Taxon',
-            struct: taxon,
-          ),
-      ];
-}

lib/widgets/viewer/info/metadata/xmp_ns/google.dart

@@ -3,9 +3,7 @@ import 'package:aves/widgets/common/extensions/build_context.dart';
 import 'package:aves/widgets/viewer/embedded/notifications.dart';
 import 'package:aves/widgets/viewer/info/common.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
 import 'package:collection/collection.dart';
-import 'package:flutter/widgets.dart';
 import 'package:tuple/tuple.dart';
 
 abstract class XmpGoogleNamespace extends XmpNamespace {
@@ -79,21 +77,10 @@ class XmpGImageNamespace extends XmpGoogleNamespace {
 }
 
 class XmpContainer extends XmpNamespace {
-  late final directoryPattern = RegExp('${nsPrefix}Directory\\[(\\d+)\\]/${nsPrefix}Item/(.*)');
-
-  final directories = <int, Map<String, String>>{};
-
   XmpContainer(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.container, nsPrefix, rawProps);
 
   @override
-  bool extractData(XmpProp prop) => extractIndexedStruct(prop, directoryPattern, directories);
+  late final List<XmpCardData> cards = [
-
+    XmpCardData(RegExp('${nsPrefix}Directory\\[(\\d+)\\]/${nsPrefix}Item/(.*)'), title: 'Directory Item'),
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (directories.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Directory Item',
-            structByIndex: directories,
-          ),
   ];
 }

lib/widgets/viewer/info/metadata/xmp_ns/iptc.dart

@@ -1,24 +0,0 @@
-import 'package:aves/utils/xmp_utils.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/material.dart';
-
-class XmpIptcCoreNamespace extends XmpNamespace {
-  late final creatorContactInfoPattern = RegExp(nsPrefix + r'CreatorContactInfo/(.*)');
-
-  final creatorContactInfo = <String, String>{};
-
-  XmpIptcCoreNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.iptc4xmpCore, nsPrefix, rawProps);
-
-  @override
-  bool extractData(XmpProp prop) => extractStruct(prop, creatorContactInfoPattern, creatorContactInfo);
-
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (creatorContactInfo.isNotEmpty)
-          XmpStructCard(
-            title: 'Creator Contact Info',
-            struct: creatorContactInfo,
-          ),
-      ];
-}

lib/widgets/viewer/info/metadata/xmp_ns/iptc4xmpext.dart

@@ -1,24 +0,0 @@
-import 'package:aves/utils/xmp_utils.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/material.dart';
-
-class XmpIptc4xmpExtNamespace extends XmpNamespace {
-  late final aooPattern = RegExp(nsPrefix + r'ArtworkOrObject\[(\d+)\]/(.*)');
-
-  final aoo = <int, Map<String, String>>{};
-
-  XmpIptc4xmpExtNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.iptc4xmpExt, nsPrefix, rawProps);
-
-  @override
-  bool extractData(XmpProp prop) => extractIndexedStruct(prop, aooPattern, aoo);
-
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (aoo.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Artwork or Object',
-            structByIndex: aoo,
-          ),
-      ];
-}

lib/widgets/viewer/info/metadata/xmp_ns/microsoft.dart

@@ -1,24 +0,0 @@
-import 'package:aves/utils/xmp_utils.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/widgets.dart';
-
-class XmpMPNamespace extends XmpNamespace {
-  late final regionListPattern = RegExp(nsPrefix + r'RegionInfo/MPRI:Regions\[(\d+)\]/(.*)');
-
-  final regionList = <int, Map<String, String>>{};
-
-  XmpMPNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.mp, nsPrefix, rawProps);
-
-  @override
-  bool extractData(XmpProp prop) => extractIndexedStruct(prop, regionListPattern, regionList);
-
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (regionList.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Regions',
-            structByIndex: regionList,
-          ),
-      ];
-}

lib/widgets/viewer/info/metadata/xmp_ns/misc.dart

@@ -0,0 +1,87 @@
+import 'package:aves/utils/xmp_utils.dart';
+import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
+
+class XmpDarktableNamespace extends XmpNamespace {
+  XmpDarktableNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.darktable, nsPrefix, rawProps);
+
+  @override
+  late final List<XmpCardData> cards = [
+    XmpCardData(RegExp(nsPrefix + r'history\[(\d+)\]/(.*)')),
+  ];
+}
+
+class XmpDwcNamespace extends XmpNamespace {
+  XmpDwcNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.dwc, nsPrefix, rawProps);
+
+  @override
+  late final List<XmpCardData> cards = [
+    XmpCardData(RegExp(nsPrefix + r'dctermsLocation/(.*)'), title: 'DC Terms Location'),
+    XmpCardData(RegExp(nsPrefix + r'Event/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'GeologicalContext/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'Identification/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'MeasurementOrFact/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'Occurrence/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'Record/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'ResourceRelationship/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'Taxon/(.*)')),
+  ];
+}
+
+class XmpIptcCoreNamespace extends XmpNamespace {
+  XmpIptcCoreNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.iptc4xmpCore, nsPrefix, rawProps);
+
+  @override
+  late final List<XmpCardData> cards = [
+    XmpCardData(RegExp(nsPrefix + r'CreatorContactInfo/(.*)')),
+  ];
+}
+
+class XmpIptc4xmpExtNamespace extends XmpNamespace {
+  XmpIptc4xmpExtNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.iptc4xmpExt, nsPrefix, rawProps);
+
+  @override
+  late final List<XmpCardData> cards = [
+    XmpCardData(RegExp(nsPrefix + r'ArtworkOrObject\[(\d+)\]/(.*)')),
+  ];
+}
+
+class XmpMPNamespace extends XmpNamespace {
+  XmpMPNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.mp, nsPrefix, rawProps);
+
+  @override
+  late final List<XmpCardData> cards = [
+    XmpCardData(RegExp(nsPrefix + r'RegionInfo/MPRI:Regions\[(\d+)\]/(.*)'), title: 'Regions'),
+  ];
+}
+
+// cf www.metadataworkinggroup.org/pdf/mwg_guidance.pdf (down, as of 2021/02/15)
+class XmpMgwRegionsNamespace extends XmpNamespace {
+  XmpMgwRegionsNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.mwgrs, nsPrefix, rawProps);
+
+  @override
+  late final List<XmpCardData> cards = [
+    XmpCardData(RegExp(nsPrefix + r'Regions/mwg-rs:AppliedToDimensions/(.*)'), title: 'Applied to Dimensions'),
+    XmpCardData(RegExp(nsPrefix + r'Regions/mwg-rs:RegionList\[(\d+)\]/(.*)'), title: 'Region List'),
+  ];
+}
+
+class XmpPlusNamespace extends XmpNamespace {
+  XmpPlusNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.plus, nsPrefix, rawProps);
+
+  @override
+  late final List<XmpCardData> cards = [
+    XmpCardData(RegExp(nsPrefix + r'Licensor\[(\d+)\]/(.*)')),
+  ];
+}
+
+class XmpMMNamespace extends XmpNamespace {
+  XmpMMNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.xmpMM, nsPrefix, rawProps);
+
+  @override
+  late final List<XmpCardData> cards = [
+    XmpCardData(RegExp(nsPrefix + r'DerivedFrom/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'History\[(\d+)\]/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'Ingredients\[(\d+)\]/(.*)')),
+    XmpCardData(RegExp(nsPrefix + r'Pantry\[(\d+)\]/(.*)')),
+  ];
+}

lib/widgets/viewer/info/metadata/xmp_ns/mwg.dart

@@ -1,36 +0,0 @@
-import 'package:aves/utils/xmp_utils.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/widgets.dart';
-
-// cf www.metadataworkinggroup.org/pdf/mwg_guidance.pdf (down, as of 2021/02/15)
-class XmpMgwRegionsNamespace extends XmpNamespace {
-  late final dimensionsPattern = RegExp(nsPrefix + r'Regions/mwg-rs:AppliedToDimensions/(.*)');
-  late final regionListPattern = RegExp(nsPrefix + r'Regions/mwg-rs:RegionList\[(\d+)\]/(.*)');
-
-  final dimensions = <String, String>{};
-  final regionList = <int, Map<String, String>>{};
-
-  XmpMgwRegionsNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.mwgrs, nsPrefix, rawProps);
-
-  @override
-  bool extractData(XmpProp prop) {
-    final hasStructs = extractStruct(prop, dimensionsPattern, dimensions);
-    final hasIndexedStructs = extractIndexedStruct(prop, regionListPattern, regionList);
-    return hasStructs || hasIndexedStructs;
-  }
-
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (dimensions.isNotEmpty)
-          XmpStructCard(
-            title: 'Applied To Dimensions',
-            struct: dimensions,
-          ),
-        if (regionList.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Region',
-            structByIndex: regionList,
-          ),
-      ];
-}

lib/widgets/viewer/info/metadata/xmp_ns/photoshop.dart

@@ -1,37 +1,19 @@
 import 'package:aves/utils/xmp_utils.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/widgets.dart';
 
 // cf https://github.com/adobe/xmp-docs/blob/master/XMPNamespaces/photoshop.md
 class XmpPhotoshopNamespace extends XmpNamespace {
-  late final cameraProfilesPattern = RegExp(nsPrefix + r'CameraProfiles\[(\d+)\]/(.*)');
-  late final textLayersPattern = RegExp(nsPrefix + r'TextLayers\[(\d+)\]/(.*)');
-
-  final cameraProfiles = <int, Map<String, String>>{};
-  final textLayers = <int, Map<String, String>>{};
-
   XmpPhotoshopNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.photoshop, nsPrefix, rawProps);
 
   @override
-  bool extractData(XmpProp prop) {
+  late final List<XmpCardData> cards = [
-    var hasIndexedStructs = extractIndexedStruct(prop, cameraProfilesPattern, cameraProfiles);
+    XmpCardData(
-    hasIndexedStructs |= extractIndexedStruct(prop, textLayersPattern, textLayers);
+      RegExp(nsPrefix + r'CameraProfiles\[(\d+)\]/(.*)'),
-    return hasIndexedStructs;
+      cards: [
-  }
+        XmpCardData(RegExp(r'crlcp:PerspectiveModel/(.*)')),
-
+      ],
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (cameraProfiles.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Camera Profiles',
-            structByIndex: cameraProfiles,
-          ),
-        if (textLayers.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Text Layers',
-            structByIndex: textLayers,
     ),
+    XmpCardData(RegExp(nsPrefix + r'TextLayers\[(\d+)\]/(.*)')),
   ];
 
   @override

lib/widgets/viewer/info/metadata/xmp_ns/plus.dart

@@ -1,24 +0,0 @@
-import 'package:aves/utils/xmp_utils.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/material.dart';
-
-class XmpPlusNamespace extends XmpNamespace {
-  late final licensorPattern = RegExp(nsPrefix + r'Licensor\[(\d+)\]/(.*)');
-
-  final licensor = <int, Map<String, String>>{};
-
-  XmpPlusNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.plus, nsPrefix, rawProps);
-
-  @override
-  bool extractData(XmpProp prop) => extractIndexedStruct(prop, licensorPattern, licensor);
-
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (licensor.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Licensor',
-            structByIndex: licensor,
-          ),
-      ];
-}

lib/widgets/viewer/info/metadata/xmp_ns/xmp.dart

@@ -4,31 +4,18 @@ import 'package:aves/widgets/common/extensions/build_context.dart';
 import 'package:aves/widgets/viewer/embedded/notifications.dart';
 import 'package:aves/widgets/viewer/info/common.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_structs.dart';
-import 'package:flutter/material.dart';
 
 class XmpBasicNamespace extends XmpNamespace {
-  late final thumbnailsPattern = RegExp(nsPrefix + r'Thumbnails\[(\d+)\]/(.*)');
-  static const thumbnailDataDisplayKey = 'Image';
-
-  final thumbnails = <int, Map<String, String>>{};
-
   XmpBasicNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.xmp, nsPrefix, rawProps);
 
   @override
-  bool extractData(XmpProp prop) => extractIndexedStruct(prop, thumbnailsPattern, thumbnails);
+  late final List<XmpCardData> cards = [
-
+    XmpCardData(
-  @override
+      RegExp(nsPrefix + r'Thumbnails\[(\d+)\]/(.*)'),
-  List<Widget> buildFromExtractedData() => [
+      spanBuilders: (index, struct) {
-        if (thumbnails.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Thumbnail',
-            structByIndex: thumbnails,
-            linkifier: (index) {
-              final struct = thumbnails[index]!;
         return {
-                if (struct.containsKey(thumbnailDataDisplayKey))
+          if (struct.containsKey('xmpGImg:image'))
-                  thumbnailDataDisplayKey: InfoRowGroup.linkSpanBuilder(
+            'Image': InfoRowGroup.linkSpanBuilder(
               linkText: (context) => context.l10n.viewerInfoOpenLinkText,
               onTap: (context) => OpenEmbeddedDataNotification.xmp(
                 props: [
@@ -41,65 +28,6 @@ class XmpBasicNamespace extends XmpNamespace {
             ),
         };
       },
-          )
-      ];
-}
-
-class XmpMMNamespace extends XmpNamespace {
-  late final derivedFromPattern = RegExp(nsPrefix + r'DerivedFrom/(.*)');
-  late final historyPattern = RegExp(nsPrefix + r'History\[(\d+)\]/(.*)');
-  late final ingredientsPattern = RegExp(nsPrefix + r'Ingredients\[(\d+)\]/(.*)');
-  late final pantryPattern = RegExp(nsPrefix + r'Pantry\[(\d+)\]/(.*)');
-
-  final derivedFrom = <String, String>{};
-  final history = <int, Map<String, String>>{};
-  final ingredients = <int, Map<String, String>>{};
-  final pantry = <int, Map<String, String>>{};
-
-  XmpMMNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.xmpMM, nsPrefix, rawProps);
-
-  @override
-  bool extractData(XmpProp prop) {
-    final hasStructs = extractStruct(prop, derivedFromPattern, derivedFrom);
-    var hasIndexedStructs = extractIndexedStruct(prop, historyPattern, history);
-    hasIndexedStructs |= extractIndexedStruct(prop, ingredientsPattern, ingredients);
-    hasIndexedStructs |= extractIndexedStruct(prop, pantryPattern, pantry);
-    return hasStructs || hasIndexedStructs;
-  }
-
-  @override
-  List<Widget> buildFromExtractedData() => [
-        if (derivedFrom.isNotEmpty)
-          XmpStructCard(
-            title: 'Derived From',
-            struct: derivedFrom,
-          ),
-        if (history.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'History',
-            structByIndex: history,
-          ),
-        if (ingredients.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Ingredients',
-            structByIndex: ingredients,
-          ),
-        if (pantry.isNotEmpty)
-          XmpStructArrayCard(
-            title: 'Pantry',
-            structByIndex: pantry,
     ),
   ];
 }
-
-class XmpNoteNamespace extends XmpNamespace {
-  // `xmpNote:HasExtendedXMP` is structural and should not be displayed to users
-  late final hasExtendedXmp = '${nsPrefix}HasExtendedXMP';
-
-  XmpNoteNamespace(String nsPrefix, Map<String, String> rawProps) : super(Namespaces.xmpNote, nsPrefix, rawProps);
-
-  @override
-  bool extractData(XmpProp prop) {
-    return prop.path == hasExtendedXmp;
-  }
-}

lib/widgets/viewer/info/metadata/xmp_structs.dart

@@ -1,148 +0,0 @@
-import 'dart:math';
-
-import 'package:aves/theme/durations.dart';
-import 'package:aves/theme/icons.dart';
-import 'package:aves/theme/themes.dart';
-import 'package:aves/utils/constants.dart';
-import 'package:aves/widgets/common/basic/multi_cross_fader.dart';
-import 'package:aves/widgets/common/extensions/build_context.dart';
-import 'package:aves/widgets/common/identity/highlight_title.dart';
-import 'package:aves/widgets/viewer/info/common.dart';
-import 'package:aves/widgets/viewer/info/metadata/xmp_namespaces.dart';
-import 'package:flutter/material.dart';
-
-class XmpStructArrayCard extends StatefulWidget {
-  final String title;
-  late final List<Map<String, String>> structs;
-  final Map<String, InfoValueSpanBuilder> Function(int index)? linkifier;
-
-  XmpStructArrayCard({
-    super.key,
-    required this.title,
-    required Map<int, Map<String, String>> structByIndex,
-    this.linkifier,
-  }) {
-    final length = structByIndex.keys.fold(0, max);
-    structs = [for (var i = 0; i < length; i++) structByIndex[i + 1] ?? {}];
-  }
-
-  @override
-  State<XmpStructArrayCard> createState() => _XmpStructArrayCardState();
-}
-
-class _XmpStructArrayCardState extends State<XmpStructArrayCard> {
-  late int _index;
-
-  List<Map<String, String>> get structs => widget.structs;
-
-  @override
-  void initState() {
-    super.initState();
-    _index = structs.length - 1;
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    void setIndex(int index) {
-      index = index.clamp(0, structs.length - 1);
-      if (_index != index) {
-        _index = index;
-        setState(() {});
-      }
-    }
-
-    return Card(
-      color: Themes.thirdLayerColor(context),
-      margin: XmpStructCard.cardMargin,
-      child: Column(
-        crossAxisAlignment: CrossAxisAlignment.start,
-        children: [
-          Padding(
-            padding: const EdgeInsets.only(left: 8, top: 8, right: 8),
-            child: Row(
-              crossAxisAlignment: CrossAxisAlignment.center,
-              children: [
-                Expanded(
-                  child: HighlightTitle(
-                    title: '${widget.title} ${_index + 1}',
-                    selectable: true,
-                    showHighlight: false,
-                  ),
-                ),
-                IconButton(
-                  visualDensity: VisualDensity.compact,
-                  icon: const Icon(AIcons.previous),
-                  onPressed: _index > 0 ? () => setIndex(_index - 1) : null,
-                  tooltip: context.l10n.previousTooltip,
-                ),
-                IconButton(
-                  visualDensity: VisualDensity.compact,
-                  icon: const Icon(AIcons.next),
-                  onPressed: _index < structs.length - 1 ? () => setIndex(_index + 1) : null,
-                  tooltip: context.l10n.nextTooltip,
-                ),
-              ],
-            ),
-          ),
-          MultiCrossFader(
-            duration: Durations.xmpStructArrayCardTransition,
-            sizeCurve: Curves.easeOutBack,
-            alignment: AlignmentDirectional.topStart,
-            child: Padding(
-              // add padding at this level (instead of the column level)
-              // so that the crossfader can animate the content size
-              // without clipping the text
-              padding: const EdgeInsets.only(left: 8, right: 8, bottom: 8),
-              child: InfoRowGroup(
-                info: structs[_index].map((key, value) => MapEntry(XmpProp.formatKey(key), value)),
-                maxValueLength: Constants.infoGroupMaxValueLength,
-                spanBuilders: widget.linkifier?.call(_index + 1),
-              ),
-            ),
-          ),
-        ],
-      ),
-    );
-  }
-}
-
-class XmpStructCard extends StatelessWidget {
-  final String title;
-  final Map<String, String> struct;
-  final Map<String, InfoValueSpanBuilder> Function()? linkifier;
-
-  static const cardMargin = EdgeInsets.symmetric(vertical: 8, horizontal: 0);
-
-  const XmpStructCard({
-    super.key,
-    required this.title,
-    required this.struct,
-    this.linkifier,
-  });
-
-  @override
-  Widget build(BuildContext context) {
-    return Card(
-      color: Themes.thirdLayerColor(context),
-      margin: cardMargin,
-      child: Padding(
-        padding: const EdgeInsets.all(8),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            HighlightTitle(
-              title: title,
-              selectable: true,
-              showHighlight: false,
-            ),
-            InfoRowGroup(
-              info: struct.map((key, value) => MapEntry(XmpProp.formatKey(key), value)),
-              maxValueLength: Constants.infoGroupMaxValueLength,
-              spanBuilders: linkifier?.call(),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-}