fix(webcomponents): fix #782, fix conflicts with shadydom of webcomponents (#784)

* fix(webcomponents): fix #782, fix conflicts with shadydom of webcomponents

* add doc

* use new private api method

Author: JiaLiPassion

Diff for: NON-STANDARD-APIS.md

@@ -11,6 +11,18 @@ But there are still a lot of non standard APIs are not patched by default, such
 * MediaQuery
 * Notification 
 
+## Currently supported polyfills
+
+* webcomponents
+
+Usage:
+
+```
+<script src="webcomponents-lite.js"></script>
+<script src="node_modules/zone.js/dist/zone.js"></script>
+<script src="node_modules/zone.js/dist/webapis-shadydom.js"></script>
+```
+
 ## Currently supported non standard node APIs
 
 ## Currently supported non standard common APIs

Diff for: dist/webapis-shadydom.js

@@ -0,0 +1,40 @@
+/**
+* @license
+* Copyright Google Inc. All Rights Reserved.
+*
+* Use of this source code is governed by an MIT-style license that can be
+* found in the LICENSE file at https://angular.io/license
+*/
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? factory() :
+	typeof define === 'function' && define.amd ? define(factory) :
+	(factory());
+}(this, (function () { 'use strict';
+
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+Zone.__load_patch('shadydom', function (global, Zone, api) {
+    var patchEventTargetMethods = Zone[Zone.__symbol__('patchEventTargetMethods')];
+    // https://github.com/angular/zone.js/issues/782
+    // in web components, shadydom will patch addEventListener/removeEventListener of
+    // Node.prototype and WindowPrototype, this will have conflict with zone.js
+    // so zone.js need to patch them again.
+    var windowPrototype = Object.getPrototypeOf(window);
+    if (windowPrototype && windowPrototype.hasOwnProperty('addEventListener')) {
+        windowPrototype[Zone.__symbol__('addEventListener')] = null;
+        windowPrototype[Zone.__symbol__('removeEventListener')] = null;
+        patchEventTargetMethods(windowPrototype);
+    }
+    if (Node.prototype.hasOwnProperty('addEventListener')) {
+        Node.prototype[Zone.__symbol__('addEventListener')] = null;
+        Node.prototype[Zone.__symbol__('removeEventListener')] = null;
+        patchEventTargetMethods(Node.prototype);
+    }
+});
+
+})));

Diff for: dist/webapis-shadydom.min.js

@@ -115,6 +115,14 @@ gulp.task('build/webapis-notification.min.js', ['compile-esm'], function(cb) {
     return generateScript('./lib/browser/webapis-notification.ts', 'webapis-notification.min.js', true, cb);
 });
 
+gulp.task('build/webapis-shadydom.js', ['compile-esm'], function(cb) {
+    return generateScript('./lib/browser/shadydom.ts', 'webapis-shadydom.js', false, cb);
+});
+
+gulp.task('build/webapis-shadydom.min.js', ['compile-esm'], function(cb) {
+    return generateScript('./lib/browser/shadydom.ts', 'webapis-shadydom.min.js', true, cb);
+});
+
 gulp.task('build/bluebird.js', ['compile-esm'], function(cb) {
     return generateScript('./lib/extra/bluebird.ts', 'zone-bluebird.js', false, cb);
 });
@@ -194,6 +202,8 @@ gulp.task('build', [
   'build/webapis-media-query.min.js',
   'build/webapis-notification.js',
   'build/webapis-notification.min.js',
+  'build/webapis-shadydom.js',
+  'build/webapis-shadydom.min.js',
   'build/zone-mix.js',
   'build/bluebird.js',
   'build/bluebird.min.js',

Diff for: gulpfile.js

@@ -0,0 +1,24 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+Zone.__load_patch('shadydom', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
+  // https://github.com/angular/zone.js/issues/782
+  // in web components, shadydom will patch addEventListener/removeEventListener of
+  // Node.prototype and WindowPrototype, this will have conflict with zone.js
+  // so zone.js need to patch them again.
+  const windowPrototype = Object.getPrototypeOf(window);
+  if (windowPrototype && windowPrototype.hasOwnProperty('addEventListener')) {
+    (windowPrototype as any)[Zone.__symbol__('addEventListener')] = null;
+    (windowPrototype as any)[Zone.__symbol__('removeEventListener')] = null;
+    api.patchEventTargetMethods(windowPrototype);
+  }
+  if (Node.prototype.hasOwnProperty('addEventListener')) {
+    (Node.prototype as any)[Zone.__symbol__('addEventListener')] = null;
+    (Node.prototype as any)[Zone.__symbol__('removeEventListener')] = null;
+    api.patchEventTargetMethods(Node.prototype);
+  }
+});