feat(Calendar): add scrollToDate method (#7847)

src/calendar/README.md

@@ -314,9 +314,10 @@ Following props are supported when the type is multiple
 
 Use [ref](https://vuejs.org/v2/api/#ref) to get Calendar instance and call instance methods.
 
-| Name  | Description                         | Attribute | Return value |
-| ----- | ----------------------------------- | --------- | ------------ |
-| reset | Reset selected date to default date | -         | -            |
+| Name | Description | Attribute | Return value |
+| --- | --- | --- | --- |
+| reset | Reset selected date to default date | - | - |
+| scrollToDate `v2.12.2` | Scroll to date | _date: Date_ | - |
 
 ### Less Variables
 

src/calendar/README.zh-CN.md

@@ -320,9 +320,10 @@ export default {
 
 通过 ref 可以获取到 Calendar 实例并调用实例方法，详见[组件实例方法](#/zh-CN/advanced-usage#zu-jian-shi-li-fang-fa)。
 
-| 方法名 | 说明                   | 参数 | 返回值 |
-| ------ | ---------------------- | ---- | ------ |
-| reset  | 重置选中的日期到默认值 | -    | -      |
+| 方法名                 | 说明                   | 参数         | 返回值 |
+| ---------------------- | ---------------------- | ------------ | ------ |
+| reset                  | 重置选中的日期到默认值 | -            | -      |
+| scrollToDate `v2.12.2` | 滚动到某个日期         | _date: Date_ | -      |
 
 ### 样式变量
 

src/calendar/index.js

@@ -192,17 +192,9 @@ export default createComponent({
       });
     },
 
-    // scroll to current month
-    scrollIntoView() {
+    // @exposed-api
+    scrollToDate(targetDate) {
       raf(() => {
-        const { currentDate } = this;
-
-        if (!currentDate) {
-          return;
-        }
-
-        const targetDate =
-          this.type === 'single' ? currentDate : currentDate[0];
         const displayed = this.value || !this.poppable;
 
         /* istanbul ignore if */
@@ -222,6 +214,17 @@ export default createComponent({
       });
     },
 
+    // scroll to current month
+    scrollIntoView() {
+      const { currentDate } = this;
+
+      if (currentDate) {
+        const targetDate =
+          this.type === 'single' ? currentDate : currentDate[0];
+        this.scrollToDate(targetDate);
+      }
+    },
+
     getInitialDate() {
       const { type, minDate, maxDate, defaultDate } = this;
 

types/calendar.d.ts

@@ -2,4 +2,6 @@ import { VanComponent } from './component';
 
 export class Calendar extends VanComponent {
   reset(): void;
+
+  scrollToDate(date: Date): void;
 }