[Improvement] Popup: add click-overlay event (#647)

docs/markdown/en-US/popup.md

@@ -49,3 +49,9 @@ Use `position` prop to set popup display position
 | transition | Transition | `String` | `popup-slide` | - |
 | prevent-scroll | Prevent background scroll | `Boolean` | `false` | - |
 | get-container | Return the mount node for Popup | `Function` | - | `() => HTMLElement` |
+
+### Event
+
+| Event | Description | Arguments |
+|-----------|-----------|-----------|
+| click-overlay | Triggered when click overlay | - |

docs/markdown/zh-CN/popup.md

@@ -49,3 +49,9 @@ export default {
 | transition | transition 名称 | `String` | `popup-slide` | - |
 | prevent-scroll | 是否防止滚动穿透 | `Boolean` | `false` | - |
 | get-container | 指定弹出层挂载的 HTML 节点 | `Function` | - | `() => HTMLElement` |
+
+### Event
+
+| 事件名 | 说明 | 参数 |
+|-----------|-----------|-----------|
+| click-overlay | 点击蒙层时触发 | - |

packages/mixins/popup/index.js

@@ -113,7 +113,7 @@ export default {
       }
 
       if (this.overlay) {
-        manager.openModal(this, {
+        manager.open(this, {
           id: this._popupId,
           dom: this.$el,
           zIndex: context.plusKey('zIndex'),
@@ -146,7 +146,7 @@ export default {
     },
 
     doAfterClose() {
-      manager.closeModal(this._popupId);
+      manager.close(this._popupId);
 
       if (this.lockOnScroll) {
         document.body.classList.remove('van-overflow-hidden');

packages/mixins/popup/manager.js

@@ -2,68 +2,48 @@ import Vue from 'vue';
 import Modal from './Modal';
 import context from './context';
 
-const modalDefaultConfig = {
+const defaultConfig = {
   className: '',
   customStyle: {}
 };
 
-const manager = {
-  getModal() {
-    let { modal } = context;
-
-    if (!modal) {
-      const ModalConstructor = Vue.extend(Modal);
-      modal = new ModalConstructor({
-        el: document.createElement('div')
-      });
-      modal.$on('click', () => {
-        manager.onClickOverlay();
-      });
-
-      context.modal = modal;
-    }
-
-    return modal;
-  },
-
-  // close popup when click modal && closeOnClickOverlay is true
-  onClickOverlay() {
-    const { top } = context;
-    if (top) {
-      const { instance } = top;
-      if (instance && instance.closeOnClickOverlay) {
-        instance.close();
-      }
-    }
-  },
-
-  openModal(instance, config) {
+export default {
+  open(vm, config) {
     const { id, dom } = config;
     const exist = context.stack.some(item => item.id === id);
 
     /* istanbul ignore next */
     if (!exist) {
       const targetNode = dom && dom.parentNode && dom.parentNode.nodeType !== 11 ? dom.parentNode : document.body;
-      context.stack.push({ instance, id, config, targetNode });
-      this.updateModal();
+      context.stack.push({ vm, id, config, targetNode });
+      this.update();
     };
   },
 
-  closeModal(id) {
+  close(id) {
     const { stack } = context;
 
     if (stack.length) {
       if (context.top.id === id) {
         stack.pop();
-        this.updateModal();
+        this.update();
       } else {
         context.stack = stack.filter(item => item.id !== id);
       }
     }
   },
 
-  updateModal() {
-    const modal = this.getModal();
+  update() {
+    let { modal } = context;
+
+    if (!modal) {
+      modal = new (Vue.extend(Modal))({
+        el: document.createElement('div')
+      });
+      modal.$on('click', this.onClick);
+
+      context.modal = modal;
+    }
 
     if (modal.$el.parentNode) {
       modal.visible = false;
@@ -74,12 +54,21 @@ const manager = {
 
       targetNode.appendChild(modal.$el);
       Object.assign(modal, {
-        ...modalDefaultConfig,
+        ...defaultConfig,
         ...config,
         visible: true
       });
     }
+  },
+
+  // close popup when click modal && closeOnClickOverlay is true
+  onClick() {
+    if (context.top) {
+      const { vm } = context.top;
+      if (vm) {
+        vm.$emit('click-overlay');
+        vm.closeOnClickOverlay && vm.close();
+      }
+    }
   }
 };
-
-export default manager;

test/specs/popup.spec.js

@@ -100,9 +100,8 @@ describe('Popup', () => {
 
     expect(wrapper.hasClass('van-popup')).to.be.true;
 
-    const modal = document.querySelector('.van-modal');
-
     setTimeout(() => {
+      const modal = document.querySelector('.van-modal');
       triggerTouch(modal, 'touchstart', 0, 0);
       triggerTouch(modal, 'touchmove', 0, 10);
       triggerTouch(modal, 'touchmove', 0, 30);