fix(checkbox): disabled checkbox could be checked (#2001)

src/checkbox/_example/group.vue

@@ -13,7 +13,7 @@
       <t-checkbox-group v-model="value2" @change="onChange2">
         <t-checkbox :checkAll="true" label="全选" />
         <t-checkbox value="选项一">选项一</t-checkbox>
-        <t-checkbox label="选项二" value="选项二" />
+        <t-checkbox label="选项二" value="选项二" :disabled="true" />
         <t-checkbox label="选项三" value="选项三" />
       </t-checkbox-group>
     </t-space>

src/checkbox/group.tsx

@@ -74,22 +74,25 @@ export default mixins(classPrefixMixins).extend({
       }
       return '';
     },
+    canCheckedCheckbox(): Array<CheckboxOptionObj> {
+      return this.optionList.filter((item) => item.disabled !== true);
+    },
     intersectionLen(): number {
-      const values = this.optionList.map((item) => item.value);
+      const values = this.canCheckedCheckbox.map((item) => item.value);
       if (this.value instanceof Array) {
         const n = intersection(this.value, values);
         return n.length;
       }
       return 0;
     },
     isCheckAll(): boolean {
-      if (this.value instanceof Array && this.value.length !== this.optionList.length - 1) {
+      if (this.value instanceof Array && this.value.length !== this.canCheckedCheckbox.length - 1) {
         return false;
       }
-      return this.intersectionLen === this.optionList.length - 1;
+      return this.intersectionLen === this.canCheckedCheckbox.length - 1;
     },
     indeterminate(): boolean {
-      return !this.isCheckAll && this.intersectionLen < this.optionList.length && this.intersectionLen !== 0;
+      return !this.isCheckAll && this.intersectionLen < this.canCheckedCheckbox.length && this.intersectionLen !== 0;
     },
     maxExceeded(): boolean {
       return this.max !== undefined && this.value.length === this.max;
@@ -177,7 +180,7 @@ export default mixins(classPrefixMixins).extend({
       const val = new Set<TdCheckboxProps['value']>();
       for (let i = 0, len = this.optionList.length; i < len; i++) {
         const item = this.optionList[i];
-        if (item.checkAll) continue;
+        if (item.checkAll || item.disabled) continue;
         val.add(item.value);
         if (this.maxExceeded) break;
       }