Initial pass

node_modules/jsdom/lib/jsdom/living/events/UIEvent-impl.js

@@ -0,0 +1,59 @@
+"use strict";
+
+const idlUtils = require("../generated/utils");
+const UIEventInit = require("../generated/UIEventInit");
+const EventImpl = require("./Event-impl").implementation;
+
+// Until webidl2js gains support for checking for Window, this would have to do.
+function isWindow(val) {
+  if (typeof val !== "object") {
+    return false;
+  }
+  const wrapper = idlUtils.wrapperForImpl(val);
+  if (typeof wrapper === "object") {
+    return wrapper === wrapper._globalProxy;
+  }
+
+  // `val` may be either impl or wrapper currently, because webidl2js currently unwraps Window objects (and their global
+  // proxies) to their underlying EventTargetImpl during conversion, which is not what we want. But at the same time,
+  // some internal usage call this constructor with the actual global proxy.
+  return isWindow(idlUtils.implForWrapper(val));
+}
+
+class UIEventImpl extends EventImpl {
+  constructor(args, privateData) {
+    const eventInitDict = args[1];
+
+    // undefined check included so that we can omit the property in internal usage.
+    if (eventInitDict && eventInitDict.view !== null && eventInitDict.view !== undefined) {
+      if (!isWindow(eventInitDict.view)) {
+        throw new TypeError(`Failed to construct '${new.target.name.replace(/Impl$/, "")}': member view is not of ` +
+                            "type Window.");
+      }
+    }
+
+    super(args, privateData);
+  }
+
+  initUIEvent(type, bubbles, cancelable, view, detail) {
+    if (view !== null) {
+      if (!isWindow(view)) {
+        throw new TypeError(`Failed to execute 'initUIEvent' on '${this.constructor.name.replace(/Impl$/, "")}': ` +
+                            "parameter 4 is not of type 'Window'.");
+      }
+    }
+
+    if (this._dispatchFlag) {
+      return;
+    }
+
+    this.initEvent(type, bubbles, cancelable);
+    this.view = view;
+    this.detail = detail;
+  }
+}
+UIEventImpl.defaultInit = UIEventInit.convert(undefined);
+
+module.exports = {
+  implementation: UIEventImpl
+};