feat(Uploader): make upload botton selectable (#2868)

example/pages/uploader/index.wxml

@@ -29,6 +29,18 @@
   />
 </demo-block>
 
+<demo-block title="隐藏上传按钮" padding>
+  <van-uploader
+    name="2"
+    file-list="{{ fileList2 }}"
+    multiple
+    show-upload="{{ false }}"
+    bind:after-read="afterRead"
+    bind:delete="delete"
+    bind:click-preview="clickPreview"
+  />
+</demo-block>
+
 <demo-block title="限制上传数量" padding>
   <van-uploader
     name="3"

packages/uploader/README.md

@@ -169,6 +169,7 @@ uploadFilePromise(fileName, chooseResult) {
 | preview-full-image | 是否在点击预览图后展示全屏图片预览                                                             | _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`                     | -    |
 | deletable          | 是否展示删除按钮                                                                               | _boolean_            | `true`                      | -    |
 | capture            | 图片或者视频选取模式，当`accept`为`image`类型时设置`capture`可选值为`camera`可以直接调起摄像头 | _string \| string[]_ | `['album', 'camera']`       | -    |
 | disabled           | 是否禁用文件上传                                                                               | _boolean_            | `false`                     | -    |

packages/uploader/index.ts

@@ -44,6 +44,10 @@ VantComponent({
       type: Boolean,
       value: true
     },
+    showUpload: {
+      type: Boolean,
+      value: true
+    },
     previewImage: {
       type: Boolean,
       value: true

packages/uploader/index.wxml

@@ -44,6 +44,7 @@
 
       <!-- 默认上传样式 -->
       <view
+        wx:if="{{ showUpload }}"
         class="van-uploader__upload {{ disabled ? 'van-uploader__upload--disabled': ''}}"
         style="width: {{ utils.addUnit(previewSize) }}; height: {{ utils.addUnit(previewSize) }};"
         bind:tap="startUpload"