08-27-周三_17-09-29

node_modules/faye-websocket/lib/faye/websocket/api/event_target.js

@@ -0,0 +1,47 @@
+var Event = require('./event');
+
+var EventTarget = {
+  onopen:     null,
+  onmessage:  null,
+  onerror:    null,
+  onclose:    null,
+
+  addEventListener: function(eventType, listener, useCapture) {
+    this._listeners = this._listeners || {};
+    var list = this._listeners[eventType] = this._listeners[eventType] || [];
+    list.push(listener);
+  },
+
+  removeEventListener: function(eventType, listener, useCapture) {
+    if (!this._listeners || !this._listeners[eventType]) return;
+
+    if (!listener) {
+      delete this._listeners[eventType];
+      return;
+    }
+    var list = this._listeners[eventType],
+        i    = list.length;
+
+    while (i--) {
+      if (listener !== list[i]) continue;
+      list.splice(i,1);
+    }
+  },
+
+  dispatchEvent: function(event) {
+    event.target = event.currentTarget = this;
+    event.eventPhase = Event.AT_TARGET;
+
+    if (this['on' + event.type])
+      this['on' + event.type](event);
+
+    if (!this._listeners || !this._listeners[event.type]) return;
+
+    this._listeners[event.type].forEach(function(listener) {
+      listener(event);
+    }, this);
+  }
+};
+
+module.exports = EventTarget;
+