pkg/polymer/lib/src/loader.dart - Issue 329923002: Remove platform.js from polymer.html, hint in the linter that it should be used

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Issue 329923002: Remove platform.js from polymer.html, hint in the linter that it should be used (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart

Patch Set: Created 6 years, 6 months ago

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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file	1 // Copyright (c) 2013, 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 part of polymer;	5 part of polymer;

6	6

7 /// Annotation used to automatically register polymer elements.	7 /// Annotation used to automatically register polymer elements.

8 class CustomTag {	8 class CustomTag {

9 final String tagName;	9 final String tagName;

10 const CustomTag(this.tagName);	10 const CustomTag(this.tagName);

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79 }	79 }

80	80

81 /// To ensure Dart can interoperate with polymer-element registered by	81 /// To ensure Dart can interoperate with polymer-element registered by

82 /// polymer.js, we need to be able to execute Dart code if we are registering	82 /// polymer.js, we need to be able to execute Dart code if we are registering

83 /// a Dart class for that element. We trigger Dart logic by patching	83 /// a Dart class for that element. We trigger Dart logic by patching

84 /// polymer-element's register function and:	84 /// polymer-element's register function and:

85 ///	85 ///

86 /// * if it has a Dart class, run PolymerDeclaration's register.	86 /// * if it has a Dart class, run PolymerDeclaration's register.

87 /// * otherwise it is a JS prototype, run polymer-element's normal register.	87 /// * otherwise it is a JS prototype, run polymer-element's normal register.

88 void _hookJsPolymer() {	88 void _hookJsPolymer() {

	89 // Note: platform.js is not used directly here, but we check that it is loaded

	90 // to provide a good error message in Dartium if people forgot to include it.

	91 // Otherwise, polymer.js below will fail with a hard to understand error

	92 // message.

	93 var platform = js.context['Platform'];

	94 if (platform == null) {

	95 throw new StateError('platform.js, dart_support.js must be loaded at'

	96 ' the top of your application, before any other scripts or HTML'

	97 ' imports that use polymer. Putting these two script tags at the top of'

	98 ' your <head> element should address this issue:'

	99 ' <script src="packages/web_components/platform.js"></script> and '

	100 ' <script src="packages/web_components/dart_support.js"></script>.');

	101 }

89 var polymerJs = js.context['Polymer'];	102 var polymerJs = js.context['Polymer'];

90 if (polymerJs == null) {	103 if (polymerJs == null) {

91 throw new StateError('polymer.js must be loaded before polymer.dart, please'	104 throw new StateError('polymer.js must be loaded before polymer.dart, please'

92 ' add <link rel="import" href="packages/polymer/polymer.html"> to your'	105 ' add <link rel="import" href="packages/polymer/polymer.html"> to your'

93 ' <head> before any Dart scripts. Alternatively you can get a different'	106 ' <head> before any Dart scripts. Alternatively you can get a different'

94 ' version of polymer.js by following the instructions at'	107 ' version of polymer.js by following the instructions at'

95 ' http://www.polymer-project.org; if you do that be sure to include'	108 ' http://www.polymer-project.org.');

96 ' the platform polyfills.');

97 }	109 }

98	110

99 // TODO(jmesserly): dart:js appears to not callback in the correct zone:	111 // TODO(jmesserly): dart:js appears to not callback in the correct zone:

100 // https://code.google.com/p/dart/issues/detail?id=17301	112 // https://code.google.com/p/dart/issues/detail?id=17301

101 var zone = Zone.current;	113 var zone = Zone.current;

102	114

103 polymerJs.callMethod('whenPolymerReady',	115 polymerJs.callMethod('whenPolymerReady',

104 [zone.bindCallback(() => Polymer._onReady.complete())]);	116 [zone.bindCallback(() => Polymer._onReady.complete())]);

105	117

106 JsFunction originalRegister = _polymerElementProto['register'];	118 JsFunction originalRegister = _polymerElementProto['register'];

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127 }	139 }

128	140

129 // Note: we cache this so we can use it later to look up 'init'.	141 // Note: we cache this so we can use it later to look up 'init'.

130 // See registerSync.	142 // See registerSync.

131 JsObject _polymerElementProto = () {	143 JsObject _polymerElementProto = () {

132 var polyElem = document.createElement('polymer-element');	144 var polyElem = document.createElement('polymer-element');

133 var proto = new JsObject.fromBrowserObject(polyElem)['__proto__'];	145 var proto = new JsObject.fromBrowserObject(polyElem)['__proto__'];

134 if (proto is Node) proto = new JsObject.fromBrowserObject(proto);	146 if (proto is Node) proto = new JsObject.fromBrowserObject(proto);

135 return proto;	147 return proto;

136 }();	148 }();

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