huifuwu-app/wisdom_cli/lib/new/widgets/theme.dart

/*
 * @Author: XianKaiQun
 * @Date: 2020-09-08 11:18:16
 * @LastEditors: XianKaiQun
 * @LastEditTime: 2020-09-08 16:13:03
 * @Description: 
 */
import 'package:flutter/widgets.dart';
import 'package:wisdom_cli/wisdom_ui.dart';

///主题
class WTheme extends InheritedTheme {
  final WThemeData? data;
  final Widget child;

  WTheme({Key? key, this.data, required this.child}) : super(key: key, child: child);

  static WThemeData of(BuildContext context) {
    final WThemeData themeData =
        _getInheritedWThemeData(context).resolve(context);
    return themeData;
  }

  @override
  bool updateShouldNotify(WTheme oldWidget) {
    return oldWidget.data != data;
  }

  @override
  Widget wrap(BuildContext context, Widget child) {
    final WTheme? theme = context.findAncestorWidgetOfExactType<WTheme>();
    return identical(this, theme) ? child : WTheme(data: data, child: child);
  }

  static WThemeData _getInheritedWThemeData(BuildContext context) {
    final WTheme? theme = context.dependOnInheritedWidgetOfExactType<WTheme>();
    return theme?.data ?? WThemeData.fallback();
  }
}