improve form types and docs (#11932)

components/form/Form.tsx

@@ -74,6 +74,8 @@ export type GetFieldDecoratorOptions = {
   trigger?: string;
   /** 可以把 onChange 的参数转化为控件的值，例如 DatePicker 可设为：(date, dateString) => dateString */
   getValueFromEvent?: (...args: any[]) => any;
+  /** Get the component props according to field value. */
+  getValueProps?: (value: any) => any;
   /** 校验子节点值的时机 */
   validateTrigger?: string | string[];
   /** 校验规则，参见 [async-validator](https://github.com/yiminghe/async-validator) */

components/form/index.en-US.md

@@ -156,6 +156,7 @@ After wrapped by `getFieldDecorator`, `value`(or other property defined by `valu
 | -------- | ----------- | ---- | ------------- |
 | id | The unique identifier is required. support [nested fields format](https://github.com/react-component/form/pull/48). | string |  |
 | options.getValueFromEvent | Specify how to get value from event or other onChange arguments | function(..args) | [reference](https://github.com/react-component/form#option-object) |
+| options.getValueProps | Get the component props according to field value. | function(value): any | [reference](https://github.com/react-component/form#option-object)
 | options.initialValue | You can specify initial value, type, optional value of children node. (Note: Because `Form` will test equality with `===` internaly, we recommend to use vairable as `initialValue`, instead of literal) |  | n/a |
 | options.normalize | Normalize value to form component, [a select-all example](https://codepen.io/afc163/pen/JJVXzG?editors=001) | function(value, prevValue, allValues): any | - |
 | options.rules | Includes validation rules. Please refer to "Validation Rules" part for details. | object\[] | n/a |