Improve entries page and latest changes panel, units on events and timeline

lib/components/pages/loco_timeline/event_editor.dart

@@ -184,7 +184,9 @@ class _FieldList extends StatelessWidget {
               value: null,
               onChanged: (field) {
                 if (field == null) return;
-                draft.fields.add(_FieldEntry(field: field));
+                draft.fields.add(
+                  _FieldEntry(field: field)..unit = _defaultUnitForField(field),
+                );
                 onChange();
               },
               items: availableFields
@@ -224,10 +226,10 @@ class _FieldList extends StatelessWidget {
                           ),
                           const SizedBox(height: 4),
                           _FieldInput(
-                            field: field.field,
-                            value: field.value,
-                            onChanged: (val) {
+                            entry: field,
+                            onChanged: (val, {String? unit}) {
                               field.value = val;
+                              if (unit != null) field.unit = unit;
                               onChange();
                             },
                           ),
@@ -253,17 +255,18 @@ class _FieldList extends StatelessWidget {
 
 class _FieldInput extends StatelessWidget {
   const _FieldInput({
-    required this.field,
-    required this.value,
+    required this.entry,
     required this.onChanged,
   });
 
-  final EventField field;
-  final dynamic value;
-  final ValueChanged<dynamic> onChanged;
+  final _FieldEntry entry;
+  final void Function(dynamic value, {String? unit}) onChanged;
 
   @override
   Widget build(BuildContext context) {
+    final field = entry.field;
+    final value = entry.value;
+
     if (field.enumValues != null && field.enumValues!.isNotEmpty) {
       final options = field.enumValues!;
       return DropdownButtonFormField<String>(
@@ -293,6 +296,119 @@ class _FieldInput extends StatelessWidget {
       );
     }
 
+    final name = field.name.toLowerCase();
+    if (name == 'max_speed') {
+      final unit = entry.unit ?? 'kph';
+      final isNumber = true;
+      return Row(
+        children: [
+          Expanded(
+            child: TextFormField(
+              initialValue: value?.toString(),
+              onChanged: (val) {
+                final parsed = double.tryParse(val);
+                onChanged(isNumber ? parsed : val, unit: unit);
+              },
+              decoration: const InputDecoration(
+                border: OutlineInputBorder(),
+                hintText: 'Enter value',
+                suffixText: 'kph/mph',
+              ),
+              keyboardType: TextInputType.number,
+            ),
+          ),
+          const SizedBox(width: 8),
+          SizedBox(
+            width: 88,
+            child: DropdownButtonFormField<String>(
+              value: unit,
+              items: const [
+                DropdownMenuItem(value: 'kph', child: Text('kph')),
+                DropdownMenuItem(value: 'mph', child: Text('mph')),
+              ],
+              onChanged: (val) {
+                if (val == null) return;
+                onChanged(value, unit: val);
+              },
+              decoration: const InputDecoration(
+                border: OutlineInputBorder(),
+                labelText: 'Unit',
+              ),
+            ),
+          ),
+        ],
+      );
+    }
+
+    if ({
+      'height',
+      'length',
+      'width',
+      'track_gauge',
+    }.contains(name)) {
+      return TextFormField(
+        initialValue: value?.toString(),
+        onChanged: (val) {
+          final parsed = double.tryParse(val);
+          onChanged(parsed ?? val);
+        },
+        decoration: const InputDecoration(
+          border: OutlineInputBorder(),
+          hintText: 'Enter value',
+          suffixText: 'mm',
+        ),
+        keyboardType: TextInputType.number,
+      );
+    }
+
+    if (name == 'weight') {
+      return TextFormField(
+        initialValue: value?.toString(),
+        onChanged: (val) {
+          final parsed = double.tryParse(val);
+          onChanged(parsed ?? val);
+        },
+        decoration: const InputDecoration(
+          border: OutlineInputBorder(),
+          hintText: 'Enter value',
+          suffixText: 'tonnes',
+        ),
+        keyboardType: TextInputType.number,
+      );
+    }
+
+    if (name == 'power') {
+      return TextFormField(
+        initialValue: value?.toString(),
+        onChanged: (val) {
+          final parsed = double.tryParse(val);
+          onChanged(parsed ?? val);
+        },
+        decoration: const InputDecoration(
+          border: OutlineInputBorder(),
+          hintText: 'Enter value',
+          suffixText: 'kW',
+        ),
+        keyboardType: TextInputType.number,
+      );
+    }
+
+    if (name == 'tractive_effort') {
+      return TextFormField(
+        initialValue: value?.toString(),
+        onChanged: (val) {
+          final parsed = double.tryParse(val);
+          onChanged(parsed ?? val);
+        },
+        decoration: const InputDecoration(
+          border: OutlineInputBorder(),
+          hintText: 'Enter value',
+          suffixText: 'kN',
+        ),
+        keyboardType: TextInputType.number,
+      );
+    }
+
     final isNumber = type == 'int' || type == 'integer';
     return TextFormField(
       initialValue: value?.toString(),
@@ -326,6 +442,13 @@ class _EventDraft {
 class _FieldEntry {
   final EventField field;
   dynamic value;
+  String? unit;
 
   _FieldEntry({required this.field});
 }
+
+String? _defaultUnitForField(EventField field) {
+  final name = field.name.toLowerCase();
+  if (name == 'max_speed') return 'kph';
+  return null;
+}

lib/components/pages/loco_timeline/timeline_grid.dart

@@ -577,7 +577,7 @@ class _TimelineModel {
           _ValueSegment(
             start: start,
             end: end,
-            value: entry.valueLabel,
+            value: _formatValueWithUnits(entry),
             entry: entry,
           ),
         );
@@ -680,6 +680,53 @@ class _TimelineModel {
   }
 }
 
+String _formatValueWithUnits(LocoAttrVersion entry) {
+  final raw = entry.valueLabel;
+  final code = entry.attrCode.toLowerCase();
+  final lowerRaw = raw.toLowerCase();
+  // Avoid double-appending if units already present.
+  final hasUnits = lowerRaw.contains('mm') ||
+      lowerRaw.contains('tonne') ||
+      lowerRaw.contains('kph') ||
+      lowerRaw.contains('mph');
+
+  double? asNumber = double.tryParse(raw);
+  String formatNumber(double value) {
+    if (value % 1 == 0) return value.toStringAsFixed(0);
+    return value.toStringAsFixed(2);
+  }
+
+  switch (code) {
+    case 'height':
+    case 'length':
+    case 'width':
+    case 'track_gauge':
+      if (hasUnits) return raw;
+      return asNumber != null ? '${formatNumber(asNumber)} mm' : '$raw mm';
+    case 'weight':
+      if (hasUnits) return raw;
+      return asNumber != null ? '${formatNumber(asNumber)} tonnes' : '$raw tonnes';
+    case 'power':
+      if (hasUnits) return raw;
+      return asNumber != null ? '${formatNumber(asNumber)} kW' : '$raw kW';
+    case 'tractive_effort':
+      if (hasUnits) return raw;
+      return asNumber != null ? '${formatNumber(asNumber)} kN' : '$raw kN';
+    case 'max_speed':
+      if (hasUnits) return raw;
+      if (asNumber != null) {
+        // Stored as kph.
+        final formatted = asNumber % 1 == 0
+            ? asNumber.toStringAsFixed(0)
+            : asNumber.toStringAsFixed(1);
+        return '$formatted kph';
+      }
+      return '$raw kph';
+    default:
+      return raw;
+  }
+}
+
 class _AxisSegment {
   final DateTime start;
   final DateTime end;
@@ -742,7 +789,15 @@ class _RowCell {
         color: Colors.transparent,
       );
     }
-    final displayStart = _formatDate(seg.start) ?? '';
+    final entry = seg.entry;
+    String displayStart = '';
+    if (entry != null) {
+      if ((entry.maskedValidFrom ?? '').trim().isNotEmpty) {
+        displayStart = entry.maskedValidFrom!.trim();
+      } else if (entry.validFrom != null) {
+        displayStart = _formatDate(entry.validFrom) ?? '';
+      }
+    }
     return _RowCell(
       value: seg.value,
       rangeLabel: displayStart,