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Issue 18789002:
Implement Custom Elements' attributeChangedCallback. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk| Index: LayoutTests/fast/dom/custom/attribute-changed-callback.html |
| diff --git a/LayoutTests/fast/dom/custom/attribute-changed-callback.html b/LayoutTests/fast/dom/custom/attribute-changed-callback.html |
| new file mode 100644 |
| index 0000000000000000000000000000000000000000..cba80ae984c9da70d9af37ebbee4e1905baf3a8f |
| --- /dev/null |
| +++ b/LayoutTests/fast/dom/custom/attribute-changed-callback.html |
| @@ -0,0 +1,66 @@ |
| +<!DOCTYPE html> |
| +<script src="../../../resources/testharness.js"></script> |
| +<script src="../../../resources/testharnessreport.js"></script> |
| +<body> |
| +<script> |
| +test(function () { |
| + var attributeChangedInvocations = 0; |
| + function attributeChanged(_, _, _) { |
|
dglazkov
2013/07/06 01:57:45
cute!
|
| + attributeChangedInvocations++; |
| + } |
| + |
| + var getterInvocations = 0; |
| + function getter() { |
| + getterInvocations++; |
| + return attributeChanged; |
| + } |
| + |
| + function failer() { |
| + assert_unreached('the attribute changed callback must not be retrieved after registration'); |
| + } |
| + |
| + var proto = Object.create(HTMLElement.prototype, { |
| + attributeChangedCallback: { |
| + get: getter |
| + } |
| + }); |
| + var ctor = document.register('x-a', {prototype: proto}); |
| + assert_equals(getterInvocations, 1, 'the attribute changed callback must have been retrieved'); |
| + |
| + proto.attributeChangedCallback = failer; |
| + var element = new ctor(); |
| + element.setAttribute('a', 'b'); |
| + assert_equals(attributeChangedInvocations, 1, 'the attribute changed callback retrieved at registration must be invoked'); |
| +}, 'transfer attribute changed callback'); |
| + |
| +test(function () { |
| + var invocations = []; |
| + function created() { |
| + invocations.push('created'); |
| + } |
| + function attributeChanged(name, oldValue, newValue) { |
| + invocations.push(name + ': ' + oldValue + ' => ' + newValue); |
| + } |
| + |
| + var proto = Object.create(HTMLElement.prototype); |
| + proto.createdCallback = created; |
| + proto.attributeChangedCallback = attributeChanged; |
| + var B = document.register('x-b', {prototype: proto}); |
| + |
| + var b = new B(); |
| + b.id = 'x'; |
| + assert_array_equals(invocations, ['created', 'id: null => x'], 'setting a reflected attribute should invoke the attributeChanged callback'); |
| + |
| + invocations = []; |
| + b.removeAttribute('id'); |
| + assert_array_equals(invocations, ['id: x => null'], 'removing an attribute should invoke the attributeChangedCallback'); |
| + |
| + invocations = []; |
| + b.setAttribute('data-x', 'y'); |
| + assert_array_equals(invocations, ['data-x: null => y'], 'setAttribute should invoke the attributeChangedCallback'); |
| + |
| + invocations = []; |
| + b.classList.toggle('z'); |
| + assert_array_equals(invocations, ['class: null => z'], 'changing the class attribute through classList should invoke the attributeChangedCallback'); |
| +}, 'add, change and remove an attribute'); |
| +</script> |
