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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 // Updates document.registerElement so Dart can see when Javascript custom | 5 // Updates document.registerElement so Dart can see when Javascript custom |
6 // elements are created, and wrap them to provide a Dart friendly API. | 6 // elements are created, and wrap them to provide a Dart friendly API. |
7 (function (doc) { | 7 (function (doc) { |
8 if (window._dart_register_element_interop_support) return; | 8 if (window._dart_register_element_interop_support) return; |
9 window._dart_register_element_interop_support = true; | 9 window._dart_register_element_interop_support = true; |
10 | 10 |
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28 var proto, extendsOption; | 28 var proto, extendsOption; |
29 if (options !== undefined) { | 29 if (options !== undefined) { |
30 proto = options.prototype; | 30 proto = options.prototype; |
31 } else { | 31 } else { |
32 proto = Object.create(HTMLElement.prototype); | 32 proto = Object.create(HTMLElement.prototype); |
33 options = {protoptype: proto}; | 33 options = {protoptype: proto}; |
34 } | 34 } |
35 | 35 |
36 var original = proto.createdCallback; | 36 var original = proto.createdCallback; |
37 var newCallback = function() { | 37 var newCallback = function() { |
38 original.call(this); | 38 if (original) original.call(this); |
39 var name = (this.getAttribute('is') || this.localName).toLowerCase(); | 39 var name = (this.getAttribute('is') || this.localName).toLowerCase(); |
40 var upgrader = upgraders[name]; | 40 var upgrader = upgraders[name]; |
41 if (upgrader) { | 41 if (upgrader) { |
42 upgrader(this); | 42 upgrader(this); |
43 } else if (upgradeOldElements) { | 43 } else if (upgradeOldElements) { |
44 // Save this element in case we can upgrade it later when an upgrader is | 44 // Save this element in case we can upgrade it later when an upgrader is |
45 // registered. | 45 // registered. |
46 var list = pendingElements[name]; | 46 var list = pendingElements[name]; |
47 if (!list) { | 47 if (!list) { |
48 list = pendingElements[name] = []; | 48 list = pendingElements[name] = []; |
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117 return originalGetUnknownTag(o, tag); | 117 return originalGetUnknownTag(o, tag); |
118 } | 118 } |
119 }; | 119 }; |
120 }); | 120 }); |
121 } | 121 } |
122 | 122 |
123 doc._registerDartTypeUpgrader = registerDartTypeUpgrader; | 123 doc._registerDartTypeUpgrader = registerDartTypeUpgrader; |
124 doc._onlyUpgradeNewElements = onlyUpgradeNewElements; | 124 doc._onlyUpgradeNewElements = onlyUpgradeNewElements; |
125 doc.registerElement = registerElement; | 125 doc.registerElement = registerElement; |
126 })(document); | 126 })(document); |
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