fix(Form)：修复再次打开页面不能验证的问题

close #919

Author: dpp050700

dist/core/utils/event-bus.js

@@ -1,78 +1,48 @@
-//创建EventBus对象
-let EventBus = function () {};
-//准备数组容器
-var objBus = [], arrBus = [];
-//添加方法
-EventBus.prototype = {
-  obj: {
-    set: function (key, action) {
-      if (key && action) {
-        var map = {};
-        map.k = key;
-        map.v = action;
-        //如果存在，则删除之前添加的事件
-        for (var i = 0, busLength = objBus.length; i < busLength; i++) {
-          var tempMap = objBus[i];
-          if (tempMap.k === key) {
-            objBus.splice(i, 1);
-          }
-        }
-        objBus.push(map);
-      }
-    },
-    get: function (key) {
-      if (key) {
-        for (var i = 0, busLength = objBus.length; i < busLength; i++) {
-          var map = objBus[i];
-          if (map.k === key) {
-            return map.v();
-          }
-        }
+function EventBusClass() {
+  this.msgQueues = {};
+}
+  
+EventBusClass.prototype = {
+  // 将消息保存到当前的消息队列中
+  on: function(msgName, func) {
+    if (Object.prototype.hasOwnProperty.call(this.msgQueues, msgName)) {
+      if (typeof this.msgQueues[msgName] === 'function') {
+        this.msgQueues[msgName] = [this.msgQueues[msgName], func];
+      } else {
+        this.msgQueues[msgName] = [...this.msgQueues[msgName], func];
       }
+    } else {
+      this.msgQueues[msgName] = func;
     }
   },
-  emit: function (key, data) {
-    if (key) {
-      for (var i = 0, busLength = arrBus.length; i < busLength; i++) {
-        var map = arrBus[i];
-        if (map.k === key) {
-          return map.v(data);
-        }
-      }
-    }
-    return new Promise((resolve) => { resolve();});
+  // 消息队列中仅保存一个消息
+  one: function(msgName, func) {
+  // 无需检查msgName是否存在
+    this.msgQueues[msgName] = func;
   },
-  on: function (key, action) {
-    if (key && action) {
-      var map = {};
-      map.k = key;
-      map.v = action;
-      arrBus.push(map);
+  // 发送消息
+  emit: function(msgName, msg) {
+    if (!Object.prototype.hasOwnProperty.call(this.msgQueues, msgName)) {
+      return;
+    }
+    if (typeof this.msgQueues[msgName] === 'function') {
+      this.msgQueues[msgName](msg);
+    } else {
+      this.msgQueues[msgName].map((fn) => {
+        fn(msg);
+      });
     }
   },
-  arr: {
-    push: function (key, action) {
-      if (key && action) {
-        var map = {};
-        map.k = key;
-        map.v = action;
-        arrBus.push(map);
-      }
-    },
-    pop: function (key) {
-      if (key) {
-        for (var i = 0, busLength = arrBus.length; i < busLength; i++) {
-          var map = arrBus[i];
-          if (map.k === key) {
-            map.v();
-          }
-        }
-      }
+  // 移除消息
+  off: function(msgName) {
+    if (!Object.prototype.hasOwnProperty.call(this.msgQueues, msgName)) {
+      return;
     }
+    delete this.msgQueues[msgName];
   }
 };
-var eventBus = new EventBus();
-export default  eventBus;
-// module.exports = {
-//   eventBus: eventBus
-// }
+  
+// 将EventBus放到window对象中
+const EventBus = new EventBusClass();
+  
+export default  EventBus;

dist/form/index.js

@@ -34,6 +34,14 @@ Component({
   attached() {
     this._init();
   },
+  detached() {
+    for(let key in this._keys) {
+      if (Object.prototype.hasOwnProperty.call(this._keys, key)) {
+        eventBus.off(`lin-form-blur-${key}`);
+        eventBus.off(`lin-form-change-${key}`);
+      }
+    }
+  },
 
   /**
      * 组件的初始数据