pathEntityListBackdrop method

@override Widget pathEntityListBackdrop(BuildContext context)

While the picker is switching path, this will displayed. If the user tapped on it, it'll collapse the list widget.

当选择器正在选择路径时，它会出现。用户点击它时，列表会折叠收起。

Implementation

@override
Widget pathEntityListBackdrop(BuildContext context) {
  return ValueListenableBuilder<bool>(
    valueListenable: isSwitchingPath,
    builder: (_, bool isSwitchingPath, __) => Positioned.fill(
      child: IgnorePointer(
        ignoring: !isSwitchingPath,
        ignoringSemantics: true,
        child: GestureDetector(
          onTap: () => this.isSwitchingPath.value = false,
          child: AnimatedOpacity(
            duration: switchingPathDuration,
            opacity: isSwitchingPath ? .75 : 0,
            child: const ColoredBox(color: Colors.black),
          ),
        ),
      ),
    ),
  );
}