show<T> static method

Implementation

static Future<T?> show<T>({
  required context,
  required Widget Function(BuildContext) builder,
  bool isDismissible = true,
  BoxConstraints? constraints,
  bool isExpanded = true,
  bool? useSafeArea,
  double? contentPadding,
  Widget? confirm,
  Widget? cancel,
  Widget? title,
  Widget? action,
  String? titleText,
  bool? showConfirm = false,
  bool? showCancel = false,
  void Function()? onConfirm,
  void Function()? onCancel,
  AlignmentGeometry? contentAlignment,
  double? height,
}) async {
  UtilInternal.unfocus();
  return showModalBottomSheet<T>(
    isDismissible: isDismissible,
    isScrollControlled: true,
    context: context,
    useSafeArea: useSafeArea ?? true,
    constraints: constraints ?? const BoxConstraints(),
    builder: (BuildContext context) {
      assert(title == null || titleText == null, '不能同时指定 title 和 titleText');
      assert(
        action == null ||
            (showConfirm == null &&
                showCancel == null &&
                onConfirm == null &&
                onCancel == null &&
                confirm == null &&
                cancel == null),
        '不能同时指定 action 和其他参数',
      );
      assert(confirm == null || onConfirm == null, '不能同时指定 confirm 和 onConfirm');
      assert(cancel == null || onCancel == null, '不能同时指定 cancel 和 onCancel');
      ThemeData ctx = Theme.of(context);
      ColorScheme colorScheme = ctx.colorScheme;
      TextTheme textScheme = ctx.textTheme;
      return GestureDetector(
        onTap: () => UtilInternal.unfocus(),
        child: KeyboardVisibilityBuilder(
          builder: (context, isKeyboardVisible) {
            return CustomAnnotatedRegion(
              child: Padding(
                padding: EdgeInsets.only(bottom: isKeyboardVisible ? context.keyboardHeight : 0),
                child: SizedBox(
                  height: height ?? context.height * ConfigStore.to.config.app.bottomSheetHeight,
                  child: Column(
                    children: [
                      const CustomDragIndicator(),
                      const CustomSpaceHeightMini(),
                      // 标题栏
                      Padding(
                        padding: EdgeInsets.symmetric(horizontal: AppTheme.padding),
                        child:
                            action ??
                            Row(
                              mainAxisAlignment: MainAxisAlignment.spaceBetween,
                              children: [
                                showCancel == true
                                    ? cancel ??
                                          CustomTextButton(
                                            style: TextButton.styleFrom(foregroundColor: colorScheme.outline),
                                            onPressed: onCancel ?? () => RouterService.instance.pop(),
                                            child: Text('cancel'.tr(), style: textScheme.titleMedium),
                                          )
                                    : const SizedBox.shrink(),
                                ?title,
                                if (titleText != null)
                                  Align(
                                    child: Text(titleText, style: textScheme.titleLarge),
                                  ),
                                showConfirm == true
                                    ? confirm ??
                                          CustomTextButton(
                                            onPressed: onConfirm,
                                            child: Text(
                                              'confirm'.tr(),
                                              style: textScheme.titleMedium?.copyWith(color: colorScheme.primary),
                                            ),
                                          )
                                    : const SizedBox.shrink(),
                              ],
                            ),
                      ),
                      if (title != null || titleText != null) const CustomSpaceHeightMini(),
                      // 内容
                      isExpanded
                          ? Expanded(child: builder(context))
                          : Container(
                              margin: EdgeInsets.only(top: AppTheme.margin),
                              padding: EdgeInsets.symmetric(horizontal: contentPadding ?? AppTheme.padding),
                              child: builder(context),
                            ),
                      const CustomSpaceHeightSmall(),
                    ],
                  ),
                ),
              ),
            );
          },
        ),
      );
    },
  );
}