feat(uploader): add preview-file prop support (#5828)

Author: landluck

packages/uploader/README.md

@@ -230,6 +230,7 @@ uploadFilePromise(fileName, chooseResult) {
 | preview-size | 预览图和上传区域的尺寸，默认单位为`px` | _string \| number_ | `80px` |
 | preview-image | 是否在上传完成后展示预览图 | _boolean_ | `true` |
 | preview-full-image | 是否在点击预览图后展示全屏图片预览 | _boolean_ | `true` |
+| preview-file `v1.11.7` | 是否在点击文件预览图后预览文件 | _boolean_ | `true` |
 | multiple | 是否开启图片多选，部分安卓机型不支持 | _boolean_ | `false` |
 | disabled | 是否禁用文件上传 | _boolean_ | `false` |
 | show-upload | 是否展示文件上传按钮 | _boolean_ | `true` |

packages/uploader/index.ts

@@ -218,6 +218,8 @@ VantComponent({
     },
 
     onPreviewFile(event: WechatMiniprogram.TouchEvent) {
+      if (!this.data.previewFile) return;
+
       const { index } = event.currentTarget.dataset;
 
       wx.openDocument({

packages/uploader/shared.ts

@@ -61,4 +61,8 @@ export const mediaProps = {
 // props for file
 export const messageFileProps = {
   extension: null,
+  previewFile: {
+    type: Boolean,
+    value: true,
+  },
 };