updateOverlay method

Future<void> updateOverlay({ String? query, bool withoutFilter = false, })

Implementation

Future<void> updateOverlay(
    {String? query, bool withoutFilter = false}) async {
  if (!mounted) return;
  $debugPrint(
      "NoFilter $withoutFilter Focus ${focusNode.hasFocus}", "updateOverlay");
  filteredItems = withoutFilter == true
      ? items
      : await getItems(items, itemSorter, itemFilter, itemCount, query);
  if (itemsOverlayEntry == null && mounted) {
    final Size textFieldSize = (context.findRenderObject() as RenderBox).size;
    final width = textFieldSize.width;
    final height = textFieldSize.height;
    itemsOverlayEntry = OverlayEntry(builder: (context) {
      $debugPrint("Focus ${focusNode.hasFocus}", "OverlayEntry");
      if (!focusNode.hasFocus) clearOverlay();
      final listHeight = filteredItems.length > visibleCount
          ? (visibleCount * itemHeight).toDouble() + 6
          : null;
      return Positioned(
        width: width,
        child: CompositedTransformFollower(
          link: _layerLink,
          showWhenUnlinked: false,
          offset: Offset(0.0, (height - 24).abs()),
          child: SizedBox(
            width: width,
            height: listHeight,
            child: Card(
              child: Scrollbar(
                child: ListView.builder(
                  padding: EdgeInsets.zero,
                  shrinkWrap: listHeight == null,
                  itemCount: filteredItems.length,
                  itemBuilder: (context, index) {
                    final item = filteredItems[index];
                    return Row(children: [
                      Expanded(
                        child: itemBuilder(
                          context,
                          item,
                          () => setState(() {
                            if (submitOnItemTap) {
                              String newText = item.toString();
                              controller.text = newText;
                              itemSubmitted(item);
                              focusNode.unfocus();
                              clearOverlay();
                              if (clearOnSubmit) clear();
                            } else {
                              String newText = item.toString();
                              controller.text = newText;
                              textChanged!(newText);
                            }
                            removeError();
                          }),
                        ),
                      )
                    ]);
                  },
                ),
              ),
            ),
          ),
        ),
      );
    });
    Overlay.of(context)!.insert(itemsOverlayEntry!);
  }

  itemsOverlayEntry!.markNeedsBuild();
}