Migrate BrnStateTag、BrnTagCustom、BrnSelectTag、BrnDeleteTag to null-safe

example/lib/sample/components/tag/select_tag_example.dart

@@ -152,8 +152,7 @@ class SelectTagExamplePageState extends State<SelectTagExamplePage> {
   double _getTagWidth(context, {int rowCount: 4}) {
     double leftRightPadding = 40;
     double rowSpace = 12;
-    return MediaQuery.of(context).size.width -
-        leftRightPadding -
-        rowSpace * (rowCount - 1) / rowCount;
+    return (MediaQuery.of(context).size.width - leftRightPadding - rowSpace * (rowCount - 1)) /
+        rowCount;
   }
 }

lib/src/components/tag/brn_state_tag.dart

@@ -1,5 +1,3 @@
-// @dart=2.9
-
 import 'package:bruno/src/components/tag/brn_tag_custom.dart';
 import 'package:flutter/material.dart';
 
@@ -17,17 +15,17 @@ import 'package:flutter/material.dart';
 ///
 class BrnStateTag extends StatelessWidget {
   final String tagText;
-  final Color backgroundColor;
-  final Color textColor;
   final TagState tagState;
+  final Color? backgroundColor;
+  final Color? textColor;
 
   //默认为等待状态,黄色
   const BrnStateTag(
-      {Key key,
-      this.tagText,
+      {Key? key,
+      required this.tagText,
+      this.tagState = TagState.waiting,
       this.backgroundColor,
-      this.textColor,
-      this.tagState = TagState.waiting})
+      this.textColor,})
       : super(key: key);
 
   @override

lib/src/components/tag/brn_tag_custom.dart

@@ -1,5 +1,3 @@
-// @dart=2.9
-
 import 'package:bruno/src/theme/brn_theme_configurator.dart';
 import 'package:flutter/material.dart';
 
@@ -22,10 +20,10 @@ class BrnTagCustom extends StatelessWidget {
   final String tagText;
 
   /// 标签的背景颜色 默认主题色
-  final Color backgroundColor;
+  final Color? backgroundColor;
 
   /// 标签的文本颜色 默认F4的反白颜色
-  final Color textColor;
+  final Color? textColor;
 
   /// 标签的圆角 默认为2
   /// 如果同时设置了borderRadius、tagBorderRadius字段，优先使用tagBorderRadius字段设置圆角
@@ -44,15 +42,15 @@ class BrnTagCustom extends StatelessWidget {
   final double maxWidth;
 
   /// 标签边框
-  final Border border;
+  final Border? border;
 
   BrnTagCustom({
-    Key key,
-    this.tagText,
+    Key? key,
+    required this.tagText,
     this.textColor,
     this.backgroundColor,
-    this.tagBorderRadius,
-    this.textPadding,
+    this.tagBorderRadius = const BorderRadius.all(Radius.circular(2)),
+    this.textPadding = const EdgeInsets.only(bottom: 0.5, left: 3, right: 3, top: 0),
     this.border,
     this.fontSize = 11,
     this.fontWeight = FontWeight.normal,
@@ -61,61 +59,46 @@ class BrnTagCustom extends StatelessWidget {
 
   ///快捷方式生成边框标签
   BrnTagCustom.buildBorderTag({
-    Key key,
+    Key? key,
+    required this.tagText,
     this.backgroundColor = Colors.transparent,
-    this.tagText = "",
-    this.textPadding =
-        const EdgeInsets.only(bottom: 3, left: 3, right: 3, top: 0),
+    this.textPadding = const EdgeInsets.only(bottom: 3, left: 3, right: 3, top: 0),
     this.fontSize = 11,
     this.fontWeight = FontWeight.normal,
-    this.tagBorderRadius,
-    Color textColor,
-    Color borderColor,
+    this.tagBorderRadius = const BorderRadius.all(Radius.circular(2)),
+    Color? textColor,
+    Color? borderColor,
     double borderWidth = 1,
-    double borderRadius = 3,
   })  : this.maxWidth = double.infinity,
         this.border = Border.all(
-          color: borderColor ??
-              BrnThemeConfigurator.instance
-                  .getConfig()
-                  .commonConfig
-                  .brandPrimary,
-          width: borderWidth ?? 1,
+          color: borderColor ?? BrnThemeConfigurator.instance.getConfig().commonConfig.brandPrimary,
+          width: borderWidth,
         ),
-        this.textColor = textColor ??
-            BrnThemeConfigurator.instance.getConfig().commonConfig.brandPrimary,
+        this.textColor =
+            textColor ?? BrnThemeConfigurator.instance.getConfig().commonConfig.brandPrimary,
         super(key: key);
 
   @override
   Widget build(BuildContext context) {
-    BorderRadius bRadius =
-        tagBorderRadius ?? BorderRadius.all(Radius.circular(2));
     return Container(
         constraints: BoxConstraints(
           maxWidth: maxWidth,
         ),
         decoration: BoxDecoration(
             color: backgroundColor ??
-                BrnThemeConfigurator.instance
-                    .getConfig()
-                    .commonConfig
-                    .brandPrimary,
+                BrnThemeConfigurator.instance.getConfig().commonConfig.brandPrimary,
             shape: BoxShape.rectangle,
-            borderRadius: bRadius,
+            borderRadius: tagBorderRadius,
             border: border),
-        padding: textPadding ??
-            EdgeInsets.only(bottom: 0.5, left: 3, right: 3, top: 0),
+        padding: textPadding,
         child: Text(
-          tagText ?? "",
+          tagText,
           textAlign: TextAlign.center,
           overflow: TextOverflow.ellipsis,
           style: TextStyle(
-            fontSize: fontSize ?? 11,
+            fontSize: fontSize,
             color: textColor ??
-                BrnThemeConfigurator.instance
-                    .getConfig()
-                    .commonConfig
-                    .colorTextBaseInverse,
+                BrnThemeConfigurator.instance.getConfig().commonConfig.colorTextBaseInverse,
             fontWeight: fontWeight,
           ),
         ));