[new feature] Toast: add new option onClose & add new slot

fix #1185
fix #1551

pull request 改动点:

- add new option onClose
- add new slot

packages/toast/README.md

@@ -105,3 +105,10 @@ const timer = setInterval(() => {
 | duration | 展示时长(ms)，值为 0 时，toast 不会消失 | `Number` | `3000` |
 | selector | 自定义选择器 | `String` | `van-toast` |
 | context | 选择器的选择范围，可以传入自定义组件的 this 作为上下文 | `Object` | 当前页面 |
+| onClose | 关闭时的回调函数 | `Function` | - |
+
+### Slot
+
+| 名称 | 说明 |
+|-----------|-----------|
+| - | 自定义内容 |

packages/toast/index.ts

@@ -25,12 +25,6 @@ VantComponent({
   },
 
   methods: {
-    clear() {
-      this.set({
-        show: false
-      });
-    },
-
     // for prevent touchmove
     noop() {}
   }

packages/toast/index.wxml

@@ -27,5 +27,7 @@
       <van-icon wx:else class="van-toast__icon" name="{{ type }}" />
       <text wx:if="{{ message }}" class="van-toast__text">{{ message }}</text>
     </block>
+
+    <slot />
   </view>
 </van-transition>

packages/toast/toast.ts

@@ -2,7 +2,7 @@ import { isObj } from '../common/utils';
 
 type ToastMessage = string | number;
 
-export type ToastOptions = {
+interface ToastOptions {
   show?: boolean;
   type?: string;
   mask?: boolean;
@@ -14,16 +14,7 @@ export type ToastOptions = {
   forbidClick?: boolean;
   loadingType?: string;
   message?: ToastMessage;
-}
-
-export interface Toast {
-  (message: ToastOptions | ToastMessage, options?: ToastOptions): Weapp.Component;
-  loading?(options?: ToastOptions | ToastMessage): Weapp.Component;
-  success?(options?: ToastOptions | ToastMessage): Weapp.Component;
-  fail?(options?: ToastOptions | ToastMessage): Weapp.Component;
-  clear?(): void;
-  setDefaultOptions?(options: ToastOptions): void;
-  resetDefaultOptions?(): void;
+  onClose?: () => void;
 }
 
 const defaultOptions = {
@@ -51,10 +42,10 @@ function getContext() {
   return pages[pages.length - 1];
 }
 
-const Toast: Toast = (options = {}) => {
-  options = {
+function Toast(toastOptions: ToastOptions | ToastMessage): Weapp.Component {
+  const options = {
     ...currentOptions,
-    ...parseOptions(options)
+    ...parseOptions(toastOptions)
   } as ToastOptions;
 
   const context = options.context || getContext();
@@ -68,6 +59,14 @@ const Toast: Toast = (options = {}) => {
   delete options.context;
   delete options.selector;
 
+  toast.clear = () => {
+    toast.set({ show: false });
+
+    if (options.onClose) {
+      options.onClose();
+    }
+  };
+
   queue.push(toast);
   toast.set(options);
   clearTimeout(toast.timer);
@@ -80,15 +79,17 @@ const Toast: Toast = (options = {}) => {
   }
 
   return toast;
-};
+}
 
-const createMethod = type => options => Toast({
-  type, ...parseOptions(options)
-});
+const createMethod = type => (options: ToastOptions | ToastMessage) =>
+  Toast({
+    type,
+    ...parseOptions(options)
+  });
 
-['loading', 'success', 'fail'].forEach(method => {
-  Toast[method] = createMethod(method);
-});
+Toast.loading = createMethod('loading');
+Toast.success = createMethod('success');
+Toast.fail = createMethod('fail');
 
 Toast.clear = () => {
   queue.forEach(toast => {
@@ -97,7 +98,7 @@ Toast.clear = () => {
   queue = [];
 };
 
-Toast.setDefaultOptions = options => {
+Toast.setDefaultOptions = (options: ToastOptions) => {
   Object.assign(currentOptions, options);
 };