Match-id-a2408d45acbea6bdd1daffdd47a08aa3d09bef3a

libs/horizon/src/event/EventWrapper.ts

@@ -1,5 +1,6 @@
-
 // 兼容IE的event key
+import { AnyNativeEvent } from './Types';
+
 const uniqueKeyMap = new Map([
   ['Esc', 'Escape'],
   ['Spacebar', ' '],
@@ -10,27 +11,58 @@ const uniqueKeyMap = new Map([
   ['Del', 'Delete'],
 ]);
 
-const noop = () => {};
+const noop = (): void => {};
-// 创建普通自定义事件对象实例，和原生事件对应
+
-export function decorateNativeEvent(customEventName, nativeEvtName, nativeEvent) {
+// 兼容IE浏览器，无法修改Event属性
+export class WrappedEvent {
+  customEventName: string;
+  nativeEvent: Event;
+  nativeEventType: string;
+  type: string;
+  key: string;
+  currentTarget: EventTarget | null = null;
+
+  stopPropagation: () => void;
+  preventDefault: () => void;
 
-  nativeEvent.isDefaultPrevented = () => nativeEvent.defaultPrevented;
-  nativeEvent.isPropagationStopped = () => nativeEvent.cancelBubble;
   // 适配老版本事件api
-  nativeEvent.persist = noop;
+  persist = noop;
+
+  constructor(customEventName: string, nativeEvtName: string, nativeEvent: AnyNativeEvent) {
+    for (const name in nativeEvent) {
+      this[name] = nativeEvent[name];
+    }
+    // stopPropagation和preventDefault 必须通过Event实例调用
+    this.stopPropagation = () => nativeEvent.stopPropagation();
+    this.preventDefault = () => nativeEvent.preventDefault();
 
     // custom事件自定义属性
-  nativeEvent.customEventName = customEventName;
+    this.customEventName = customEventName;
-  nativeEvent.nativeEvent = nativeEvent;
+    this.nativeEvent = nativeEvent;
     // 保存原生的事件类型，因为下面会修改
-  nativeEvent.nativeEventType = nativeEvent.type;
+    this.nativeEventType = nativeEvent.type;
 
-  Object.defineProperty(nativeEvent, 'type', { writable: true });
+    this.type = nativeEvtName;
-  nativeEvent.type = nativeEvtName;
 
-  const orgKey = nativeEvent.key;
+    // 兼容IE的event key
-  Object.defineProperty(nativeEvent, 'key', { writable: true });
+    const orgKey = (nativeEvent as any).key;
-  nativeEvent.key = uniqueKeyMap.get(orgKey) || orgKey;
+    this.key = uniqueKeyMap.get(orgKey) || orgKey;
-
+  }
-  return nativeEvent;
+
+  isDefaultPrevented(): boolean {
+    return this.nativeEvent.defaultPrevented;
+  }
+
+  isPropagationStopped(): boolean {
+    return this.nativeEvent.cancelBubble;
+  }
+}
+
+// 创建普通自定义事件对象实例，和原生事件对应
+export function decorateNativeEvent(
+  customEventName: string,
+  nativeEvtName: string,
+  nativeEvent: AnyNativeEvent
+): WrappedEvent {
+  return new WrappedEvent(customEventName, nativeEvtName, nativeEvent);
 }

libs/horizon/src/event/ListenerGetter.ts

@@ -1,6 +1,7 @@
 import { VNode } from '../renderer/Types';
 import { DomComponent } from '../renderer/vnode/VNodeTags';
-import { AnyNativeEvent, ListenerUnitList } from './Types';
+import { WrappedEvent } from './EventWrapper';
+import { ListenerUnitList } from './Types';
 import { EVENT_TYPE_ALL, EVENT_TYPE_BUBBLE, EVENT_TYPE_CAPTURE } from './EventHub';
 
 // 从vnode属性中获取事件listener
@@ -25,7 +26,7 @@ function getListenerFromVNode(vNode: VNode, eventName: string): Function | null
 export function getListenersFromTree(
   targetVNode: VNode | null,
   horizonEvtName: string | null,
-  nativeEvent: AnyNativeEvent,
+  nativeEvent: WrappedEvent,
   eventType: string
 ): ListenerUnitList {
   if (!horizonEvtName) {

libs/horizon/src/event/Types.ts

@@ -1,13 +1,17 @@
-
 import type { VNode } from '../renderer/Types';
+import { WrappedEvent } from './EventWrapper';
 
 export type AnyNativeEvent = KeyboardEvent | MouseEvent | TouchEvent | UIEvent | Event;
 
+export interface HorizonEventListener {
+  (event: WrappedEvent): void;
+}
+
 export type ListenerUnit = {
   vNode: null | VNode;
-  listener: Function;
+  listener: HorizonEventListener;
   currentTarget: EventTarget;
-  event: AnyNativeEvent;
+  event: WrappedEvent;
 };
 
 export type ListenerUnitList = Array<ListenerUnit>;