[improvement] ImagePreview: add showIndicators prop (#1992)

packages/image-preview/ImagePreview.vue

@@ -10,7 +10,7 @@
     <swipe
       ref="swipe"
       :initial-swipe="startPosition"
-      :show-indicators="false"
+      :show-indicators="showIndicators"
       @change="onChange"
     >
       <swipe-item v-for="(item, index) in images" :key="index">
@@ -50,6 +50,7 @@ export default create({
   },
 
   props: {
+    showIndicators: Boolean,
     images: {
       type: Array,
       default: () => []

packages/image-preview/en-US.md

@@ -52,4 +52,5 @@ setTimeout(() => {
 | images | Images URL list | `Array` | `[]` |
 | startPosition | Start position | `Number` | `0` |
 | showIndex | Whether to show index | `Boolean` | `true` |
+| showIndicators | Whether to show indicators | `Boolean` | `false` |
 | onClose | Close callback | `Function` | - |

packages/image-preview/index.js

@@ -4,6 +4,14 @@ import { isServer } from '../utils';
 
 let instance;
 
+const defaultConfig = {
+  value: true,
+  images: [],
+  showIndex: true,
+  showIndicators: false,
+  startPosition: 0
+};
+
 const initInstance = () => {
   instance = new (Vue.extend(VueImagePreview))({
     el: document.createElement('div')
@@ -21,17 +29,18 @@ const ImagePreview = (images, startPosition) => {
     initInstance();
   }
 
-  const config = Array.isArray(images) ? { images, startPosition } : images;
+  const options = Array.isArray(images) ? { images, startPosition } : images;
+
+  Object.assign(instance, {
+    ...defaultConfig,
+    ...options
+  });
 
-  instance.value = true;
-  instance.images = config.images;
-  instance.showIndex = config.showIndex || true;
-  instance.startPosition = config.startPosition || 0;
   instance.$on('input', show => {
     instance.value = show;
     if (!show) {
       instance.$off('input');
-      config.onClose && config.onClose();
+      options.onClose && options.onClose();
     }
   });
 

packages/image-preview/zh-CN.md

@@ -60,4 +60,5 @@ setTimeout(() => {
 | images | 需要预览的图片 URL 数组 | `Array` | `[]` | 1.1.16 |
 | startPosition | 图片预览起始位置索引 | `Number` | `0` | 1.1.16 |
 | showIndex | 是否显示页码 | `Boolean` | `true` | 1.3.4 |
+| showIndicators | 是否显示轮播指示器 | `Boolean` | `false` | 1.3.10 |
 | onClose | 关闭时的回调函数 | `Function` | - | 1.1.16 |

types/image-preview.d.ts

@@ -4,6 +4,7 @@ export type ImagePreviewOptions = string[] | {
   images: string[];
   startPosition?: number;
   showIndex?: boolean;
+  showIndicators?: boolean;
   onClose?: () => any;
 };