languages/dart-sdk
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Polyfill only once

Browse source 
Avoid dcall on polyfill.

R=jmesserly@google.com

Review-Url: https://codereview.chromium.org/2983903002 .
This commit is contained in:
Vijay Menon 2017-07-19 13:42:19 -07:00
parent c98989f0d7
commit 87ee6cc0d6
11 changed files with 304 additions and 279 deletions
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123
pkg/dev_compiler/lib/js/amd/dart_sdk.js
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pkg/dev_compiler/lib/js/amd/dart_sdk.js.map
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pkg/dev_compiler/lib/js/common/dart_sdk.js
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pkg/dev_compiler/lib/js/es6/dart_sdk.js
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pkg/dev_compiler/lib/js/es6/dart_sdk.js.map
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pkg/dev_compiler/lib/js/legacy/dart_sdk.js
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pkg/dev_compiler/lib/js/legacy/dart_sdk.js.map
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pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/runtime.dart
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@ -36,66 +36,70 @@ part 'utils.dart';
// TODO(vsm): Move polyfill code to dart:html.
// Note, native extensions are registered onto types in dart.global.
// This polyfill needs to run before the corresponding dart:html code is run.
final polyfill = JS(
final _polyfilled = JS('', 'Symbol("_polyfilled")');
bool polyfill(window) => JS(
'',
'''
function (window) {
if (typeof window.NodeList !== "undefined") {
'''(() => {
if ($window[$_polyfilled]) return false;
$window[$_polyfilled] = true;
if (typeof $window.NodeList !== "undefined") {
// TODO(vsm): Do we still need these?
window.NodeList.prototype.get = function(i) { return this[i]; };
window.NamedNodeMap.prototype.get = function(i) { return this[i]; };
window.DOMTokenList.prototype.get = function(i) { return this[i]; };
window.HTMLCollection.prototype.get = function(i) { return this[i]; };
$window.NodeList.prototype.get = function(i) { return this[i]; };
$window.NamedNodeMap.prototype.get = function(i) { return this[i]; };
$window.DOMTokenList.prototype.get = function(i) { return this[i]; };
$window.HTMLCollection.prototype.get = function(i) { return this[i]; };
// Expose constructors for DOM types dart:html needs to assume are
// available on window.
if (typeof window.PannerNode == "undefined") {
if (typeof $window.PannerNode == "undefined") {
let audioContext;
if (typeof window.AudioContext == "undefined" &&
(typeof window.webkitAudioContext != "undefined")) {
audioContext = new window.webkitAudioContext();
if (typeof $window.AudioContext == "undefined" &&
(typeof $window.webkitAudioContext != "undefined")) {
audioContext = new $window.webkitAudioContext();
} else {
audioContext = new window.AudioContext();
window.StereoPannerNode =
audioContext = new $window.AudioContext();
$window.StereoPannerNode =
audioContext.createStereoPanner().constructor;
}
window.PannerNode = audioContext.createPanner().constructor;
$window.PannerNode = audioContext.createPanner().constructor;
}
if (typeof window.AudioSourceNode == "undefined") {
window.AudioSourceNode = MediaElementAudioSourceNode.__proto__;
if (typeof $window.AudioSourceNode == "undefined") {
$window.AudioSourceNode = MediaElementAudioSourceNode.__proto__;
}
if (typeof window.FontFaceSet == "undefined") {
if (typeof $window.FontFaceSet == "undefined") {
// CSS Font Loading is not supported on Edge.
if (typeof window.document.fonts != "undefined") {
window.FontFaceSet = window.document.fonts.__proto__.constructor;
if (typeof $window.document.fonts != "undefined") {
$window.FontFaceSet = $window.document.fonts.__proto__.constructor;
}
}
if (typeof window.MemoryInfo == "undefined") {
if (typeof window.performance.memory != "undefined") {
window.MemoryInfo = window.performance.memory.constructor;
if (typeof $window.MemoryInfo == "undefined") {
if (typeof $window.performance.memory != "undefined") {
$window.MemoryInfo = $window.performance.memory.constructor;
}
}
if (typeof window.Geolocation == "undefined") {
window.Geolocation == window.navigator.geolocation.constructor;
if (typeof $window.Geolocation == "undefined") {
$window.Geolocation == $window.navigator.geolocation.constructor;
}
if (typeof window.Animation == "undefined") {
let d = window.document.createElement('div');
if (typeof $window.Animation == "undefined") {
let d = $window.document.createElement('div');
if (typeof d.animate != "undefined") {
window.Animation = d.animate(d).constructor;
$window.Animation = d.animate(d).constructor;
}
}
if (typeof window.SourceBufferList == "undefined") {
window.SourceBufferList =
new window.MediaSource().sourceBuffers.constructor;
if (typeof $window.SourceBufferList == "undefined") {
$window.SourceBufferList =
new $window.MediaSource().sourceBuffers.constructor;
}
if (typeof window.SpeechRecognition == "undefined") {
window.SpeechRecognition = window.webkitSpeechRecognition;
window.SpeechRecognitionError = window.webkitSpeechRecognitionError;
window.SpeechRecognitionEvent = window.webkitSpeechRecognitionEvent;
if (typeof $window.SpeechRecognition == "undefined") {
$window.SpeechRecognition = $window.webkitSpeechRecognition;
$window.SpeechRecognitionError = $window.webkitSpeechRecognitionError;
$window.SpeechRecognitionEvent = $window.webkitSpeechRecognitionEvent;
}
}
}
''');
return true;
})()''');
@JSExportName('global')
final global_ = JS(

5
pkg/dev_compiler/tool/input_sdk/private/js_helper.dart
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@ -910,6 +910,7 @@ class BooleanConversionAssertionError extends AssertionError {
// Hook to register new global object. This is invoked from dart:html
// whenever a new window is accessed for the first time.
void registerGlobalObject(object) {
dart.polyfill(object);
dart.applyAllExtensions(object);
if (dart.polyfill(object)) {
dart.applyAllExtensions(object);
}
}