select 支持选项级别 disabled 配置

scss/components/form/_select.scss

@@ -100,6 +100,14 @@
     &:hover {
       background-color: darken($Form-selectValue-bg, 5%);
     }
+
+    &.is-disabled {
+      pointer-events: none;
+      display: none;
+      cursor: not-allowed;
+      background-color: lighten($Form-selectValue-bg, 5%);
+      background: lighten($Form-selectValue-bg, 5%);
+    }
   }
 
   &-arrow {

src/components/Select.tsx

@@ -542,7 +542,9 @@ export class Select extends React.Component<SelectProps, SelectState> {
       multiple ? (
         <div className={`${ns}Select-value`} key={index}>
           <span
-            className={`${ns}Select-valueIcon ${disabled ? 'is-disabled' : ''}`}
+            className={`${ns}Select-valueIcon ${
+              disabled || item.disabled ? 'is-disabled' : ''
+            }`}
             onClick={this.removeItem.bind(this, index)}
           >
             ×
@@ -694,6 +696,7 @@ export class Select extends React.Component<SelectProps, SelectState> {
                     onChange={() => {
                       this.handleChange(item);
                     }}
+                    disabled={item.disabled}
                   >
                     {item.disabled
                       ? item[labelField]