initThemeConfig method

@override void initThemeConfig(String configId, { BaseCommonConfig? currentLevelCommonConfig, })

部分代码示意如下：

cardTitleConfig.detailTextStyle.merge(
  BrnTextStyle(
    color: commonConfig.colorTextBase,
    fontSize: commonConfig.fontSizeBase,
  ).merge(detailTextStyle),
);

- 以 `commonConfig` 字段为基础 merge `detailTextStyle`。
  `detailTextStyle` 字段优先级高，当detailTextStyle中字段（如 color）为 null 时
  会使用 `commonConfig.colorTextBase`。
- 以默认上一级配置为基础 merge 第一步的结果，当第一步中字段（如 color）为空时，
  使用上一层级配置的 color (`cardTitleConfig.detailTextStyle.color`)。

Implementation

@override
void initThemeConfig(
  String configId, {
  BaseCommonConfig? currentLevelCommonConfig,
}) {
  super.initThemeConfig(
    configId,
    currentLevelCommonConfig: currentLevelCommonConfig,
  );

  /// 用户全局组件配置
  ActionSheetConfig actionSheetConfig = BaseThemeConfig.instance
      .getConfig(configId: configId)
      .actionSheetConfig;

  _titlePadding ??= actionSheetConfig.titlePadding;
  _contentPadding ??= actionSheetConfig.contentPadding;
  _titleStyle = actionSheetConfig.titleStyle.merge(
    BaseTextStyle(
      color: commonConfig.colorTextSecondary,
      fontSize: commonConfig.fontSizeBase,
    ).merge(_titleStyle),
  );
  _itemTitleStyle = actionSheetConfig.itemTitleStyle.merge(
    BaseTextStyle(
      color: commonConfig.colorTextBase,
      fontSize: commonConfig.fontSizeSubHead,
    ).merge(_itemTitleStyle),
  );
  _itemTitleStyleLink = actionSheetConfig.itemTitleStyleLink.merge(
    BaseTextStyle(
      color: commonConfig.colorLink,
      fontSize: commonConfig.fontSizeSubHead,
    ).merge(_itemTitleStyleLink),
  );
  _itemTitleStyleAlert = actionSheetConfig.itemTitleStyleAlert.merge(
    BaseTextStyle(
      color: commonConfig.brandError,
      fontSize: commonConfig.fontSizeBase,
    ).merge(_itemTitleStyleAlert),
  );
  _itemDescStyle = actionSheetConfig.itemDescStyle.merge(
    BaseTextStyle(
      color: commonConfig.colorTextBase,
      fontSize: commonConfig.fontSizeCaption,
    ).merge(_itemDescStyle),
  );
  _itemDescStyleLink = actionSheetConfig.itemDescStyleLink.merge(
    BaseTextStyle(
      color: commonConfig.colorLink,
      fontSize: commonConfig.fontSizeCaption,
    ).merge(_itemDescStyleLink),
  );
  _itemDescStyleAlert = actionSheetConfig.itemDescStyleAlert.merge(
    BaseTextStyle(
      color: commonConfig.brandError,
      fontSize: commonConfig.fontSizeCaption,
    ).merge(_itemDescStyleAlert),
  );
  _cancelStyle = actionSheetConfig.cancelStyle.merge(
    BaseTextStyle(
      color: commonConfig.colorTextBase,
      fontSize: commonConfig.fontSizeSubHead,
    ).merge(_cancelStyle),
  );
  _topRadius ??= commonConfig.radiusLg;
}