pathEntityListWidget method

@override Widget pathEntityListWidget(BuildContext context)

List widget for path entities. 路径选择列表组件

Implementation

@override
Widget pathEntityListWidget(BuildContext context) {
  appBarPreferredSize ??= appBar(context).preferredSize;
  return Positioned.fill(
    top: isAppleOS(context)
        ? context.topPadding + appBarPreferredSize!.height
        : 0,
    bottom: null,
    child: ValueListenableBuilder<bool>(
      valueListenable: isSwitchingPath,
      builder: (_, bool isSwitchingPath, Widget? child) => Semantics(
        hidden: isSwitchingPath ? null : true,
        child: AnimatedAlign(
          duration: switchingPathDuration,
          curve: switchingPathCurve,
          alignment: Alignment.bottomCenter,
          heightFactor: isSwitchingPath ? 1 : 0,
          child: AnimatedOpacity(
            duration: switchingPathDuration,
            curve: switchingPathCurve,
            opacity: !isAppleOS(context) || isSwitchingPath ? 1 : 0,
            child: ClipRRect(
              borderRadius: const BorderRadius.vertical(
                bottom: Radius.circular(10),
              ),
              child: Container(
                constraints: BoxConstraints(
                  maxHeight: MediaQuery.sizeOf(context).height *
                      (isAppleOS(context) ? .6 : .8),
                ),
                color: theme.colorScheme.background,
                child: child,
              ),
            ),
          ),
        ),
      ),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          ValueListenableBuilder<PermissionState>(
            valueListenable: permission,
            builder: (_, PermissionState ps, Widget? child) => Semantics(
              label: '${semanticsTextDelegate.viewingLimitedAssetsTip}, '
                  '${semanticsTextDelegate.changeAccessibleLimitedAssets}',
              button: true,
              onTap: PhotoManager.presentLimited,
              hidden: !isPermissionLimited,
              focusable: isPermissionLimited,
              excludeSemantics: true,
              child: isPermissionLimited ? child : const SizedBox.shrink(),
            ),
            child: Padding(
              padding: const EdgeInsets.symmetric(
                horizontal: 20,
                vertical: 12,
              ),
              child: Text.rich(
                TextSpan(
                  children: <TextSpan>[
                    TextSpan(
                      text: textDelegate.viewingLimitedAssetsTip,
                    ),
                    TextSpan(
                      text: ' '
                          '${textDelegate.changeAccessibleLimitedAssets}',
                      style: TextStyle(color: interactiveTextColor(context)),
                      recognizer: TapGestureRecognizer()
                        ..onTap = PhotoManager.presentLimited,
                    ),
                  ],
                ),
                style: context.textTheme.bodySmall?.copyWith(fontSize: 14),
              ),
            ),
          ),
          Flexible(
            child: Selector<DefaultAssetPickerProvider,
                List<PathWrapper<AssetPathEntity>>>(
              selector: (_, DefaultAssetPickerProvider p) => p.paths,
              builder: (_, List<PathWrapper<AssetPathEntity>> paths, __) {
                final List<PathWrapper<AssetPathEntity>> filtered = paths
                    .where(
                      (PathWrapper<AssetPathEntity> p) => p.assetCount != 0,
                    )
                    .toList();
                return ListView.separated(
                  padding: const EdgeInsetsDirectional.only(top: 1),
                  shrinkWrap: true,
                  itemCount: filtered.length,
                  itemBuilder: (BuildContext c, int i) => pathEntityWidget(
                    context: c,
                    list: filtered,
                    index: i,
                  ),
                  separatorBuilder: (_, __) => Container(
                    margin: const EdgeInsetsDirectional.only(start: 60),
                    height: 1,
                    color: theme.canvasColor,
                  ),
                );
              },
            ),
          ),
        ],
      ),
    ),
  );
}