resize

packages/z-flutter/lib/main.dart

@@ -169,6 +169,47 @@ class _MainAppState extends State<MainApp> {
     });
   }
 
+  void _onEntryResized(
+    TimelineEntry entry,
+    DateTime newStart,
+    DateTime newEnd,
+    int newLane,
+  ) {
+    // Optimistic update -- apply locally before the host round-trips.
+    if (_state case final state?) {
+      final oldItem = state.items[entry.id];
+      if (oldItem != null) {
+        final updatedItems = Map<String, TimelineItemData>.of(state.items);
+        updatedItems[entry.id] = TimelineItemData(
+          id: oldItem.id,
+          groupId: oldItem.groupId,
+          title: oldItem.title,
+          description: oldItem.description,
+          start: newStart.toIso8601String(),
+          end: entry.hasEnd ? newEnd.toIso8601String() : null,
+          lane: newLane,
+        );
+        final updatedState = TimelineState(
+          timeline: state.timeline,
+          groups: state.groups,
+          items: updatedItems,
+          groupOrder: state.groupOrder,
+          selectedItemId: state.selectedItemId,
+          darkMode: state.darkMode,
+        );
+        _applyState(updatedState);
+      }
+    }
+
+    emitEvent('entry_resized', <String, Object?>{
+      'entryId': entry.id,
+      'newStart': newStart.toIso8601String(),
+      'newEnd': entry.hasEnd ? newEnd.toIso8601String() : null,
+      'groupId': entry.groupId,
+      'lane': newLane,
+    });
+  }
+
   void _emitContentHeight() {
     // Start with the fixed chrome heights.
     var totalHeight = _tieredHeaderHeight + _breadcrumbHeight;
@@ -242,6 +283,7 @@ class _MainAppState extends State<MainApp> {
                           colorBuilder: _colorForEntry,
                           enableDrag: true,
                           onEntryMoved: _onEntryMoved,
+                          onEntryResized: _onEntryResized,
                         ),
                       ),
                     ),