confirmButton method

@override Widget confirmButton(BuildContext context)

It'll pop with AssetPickerProvider.selectedAssets when there are any assets were chosen. 当有资源已选时，点击按钮将把已选资源通过路由返回。

Implementation

@override
Widget confirmButton(BuildContext context) {
  return Consumer<DefaultAssetPickerProvider>(
    builder: (_, DefaultAssetPickerProvider p, __) {
      final bool isSelectedNotEmpty = p.isSelectedNotEmpty;
      final bool shouldAllowConfirm =
          isSelectedNotEmpty || p.previousSelectedAssets.isNotEmpty;
      return MaterialButton(
        minWidth: shouldAllowConfirm ? 48 : 20,
        height: appBarItemHeight,
        padding: const EdgeInsets.symmetric(horizontal: 12),
        color: theme.colorScheme.secondary,
        disabledColor: theme.splashColor,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(3),
        ),
        onPressed: shouldAllowConfirm
            ? () {
                Navigator.maybeOf(context)?.maybePop(p.selectedAssets);
              }
            : null,
        materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
        child: ScaleText(
          isSelectedNotEmpty && !isSingleAssetMode
              ? '${textDelegate.confirm}'
                  ' (${p.selectedAssets.length}/${p.maxAssets})'
              : textDelegate.confirm,
          style: TextStyle(
            color: shouldAllowConfirm
                ? theme.textTheme.bodyLarge?.color
                : theme.textTheme.bodySmall?.color,
            fontSize: 17,
            fontWeight: FontWeight.normal,
          ),
          semanticsLabel: isSelectedNotEmpty && !isSingleAssetMode
              ? '${semanticsTextDelegate.confirm}'
                  ' (${p.selectedAssets.length}/${p.maxAssets})'
              : semanticsTextDelegate.confirm,
        ),
      );
    },
  );
}