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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=783129
-->
<head>
<title>Test for document.registerElement lifecycle callback</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=783129">Bug 783129</a>
<div id="container">
<x-hello id="hello"></x-hello>
<button id="extbutton" is="x-button"></button>
</div>
<script>
var container = document.getElementById("container");
// Tests callbacks after registering element type that is already in the document.
// create element in document -> register -> remove from document
function testRegisterUnresolved() {
var helloElem = document.getElementById("hello");
var createdCallbackCalled = false;
var attachedCallbackCalled = false;
var detachedCallbackCalled = false;
var p = Object.create(HTMLElement.prototype);
p.createdCallback = function() {
is(helloElem.__proto__, p, "Prototype should be adjusted just prior to invoking the created callback.");
is(createdCallbackCalled, false, "Created callback should only be called once in this tests.");
is(this, helloElem, "The 'this' value should be the custom element.");
createdCallbackCalled = true;
};
p.attachedCallback = function() {
is(createdCallbackCalled, true, "Created callback should be called before attached");
is(attachedCallbackCalled, false, "attached callback should only be called once in this test.");
is(this, helloElem, "The 'this' value should be the custom element.");
attachedCallbackCalled = true;
};
p.detachedCallback = function() {
is(attachedCallbackCalled, true, "attached callback should be called before detached");
is(detachedCallbackCalled, false, "detached callback should only be called once in this test.");
detachedCallbackCalled = true;
is(this, helloElem, "The 'this' value should be the custom element.");
runNextTest();
};
p.attributeChangedCallback = function(name, oldValue, newValue) {
ok(false, "attributeChanged callback should never be called in this test.");
};
document.registerElement("x-hello", { prototype: p });
is(createdCallbackCalled, true, "created callback should be called when control returns to script from user agent code");
// Remove element from document to trigger detached callback.
container.removeChild(helloElem);
}
// Tests callbacks after registering an extended element type that is already in the document.
// create element in document -> register -> remove from document
function testRegisterUnresolvedExtended() {
var buttonElem = document.getElementById("extbutton");
var createdCallbackCalled = false;
var attachedCallbackCalled = false;
var detachedCallbackCalled = false;
var p = Object.create(HTMLButtonElement.prototype);
p.createdCallback = function() {
is(buttonElem.__proto__, p, "Prototype should be adjusted just prior to invoking the created callback.");
is(createdCallbackCalled, false, "Created callback should only be called once in this tests.");
is(this, buttonElem, "The 'this' value should be the custom element.");
createdCallbackCalled = true;
};
p.attachedCallback = function() {
is(createdCallbackCalled, true, "Created callback should be called before attached");
is(attachedCallbackCalled, false, "attached callback should only be called once in this test.");
is(this, buttonElem, "The 'this' value should be the custom element.");
attachedCallbackCalled = true;
};
p.detachedCallback = function() {
is(attachedCallbackCalled, true, "attached callback should be called before detached");
is(detachedCallbackCalled, false, "detached callback should only be called once in this test.");
detachedCallbackCalled = true;
is(this, buttonElem, "The 'this' value should be the custom element.");
runNextTest();
};
p.attributeChangedCallback = function(name, oldValue, newValue) {
ok(false, "attributeChanged callback should never be called in this test.");
};
document.registerElement("x-button", { prototype: p, extends: "button" });
is(createdCallbackCalled, true, "created callback should be called when control returns to script from user agent code");
// Remove element from document to trigger detached callback.
container.removeChild(buttonElem);
}
function testInnerHTML() {
var createdCallbackCalled = false;
var p = Object.create(HTMLElement.prototype);
p.createdCallback = function() {
is(createdCallbackCalled, false, "created callback should only be called once in this test.");
createdCallbackCalled = true;
};
document.registerElement("x-inner-html", { prototype: p });
var div = document.createElement(div);
div.innerHTML = '<x-inner-html></x-inner-html>';
is(createdCallbackCalled, true, "created callback should be called after setting innerHTML.");
runNextTest();
}
function testInnerHTMLExtended() {
var createdCallbackCalled = false;
var p = Object.create(HTMLButtonElement.prototype);
p.createdCallback = function() {
is(createdCallbackCalled, false, "created callback should only be called once in this test.");
createdCallbackCalled = true;
};
document.registerElement("x-inner-html-extended", { prototype: p, extends: "button" });
var div = document.createElement(div);
div.innerHTML = '<button is="x-inner-html-extended"></button>';
is(createdCallbackCalled, true, "created callback should be called after setting innerHTML.");
runNextTest();
}
function testInnerHTMLUpgrade() {
var createdCallbackCalled = false;
var div = document.createElement(div);
div.innerHTML = '<x-inner-html-upgrade></x-inner-html-upgrade>';
var p = Object.create(HTMLElement.prototype);
p.createdCallback = function() {
is(createdCallbackCalled, false, "created callback should only be called once in this test.");
createdCallbackCalled = true;
};
document.registerElement("x-inner-html-upgrade", { prototype: p });
is(createdCallbackCalled, true, "created callback should be called after registering.");
runNextTest();
}
function testInnerHTMLExtendedUpgrade() {
var createdCallbackCalled = false;
var div = document.createElement(div);
div.innerHTML = '<button is="x-inner-html-extended-upgrade"></button>';
var p = Object.create(HTMLButtonElement.prototype);
p.createdCallback = function() {
is(createdCallbackCalled, false, "created callback should only be called once in this test.");
createdCallbackCalled = true;
};
document.registerElement("x-inner-html-extended-upgrade", { prototype: p, extends: "button" });
is(createdCallbackCalled, true, "created callback should be called after registering.");
runNextTest();
}
// Test callback when creating element after registering an element type.
// register -> create element -> insert into document -> remove from document
function testRegisterResolved() {
var createdCallbackCalled = false;
var attachedCallbackCalled = false;
var detachedCallbackCalled = false;
var createdCallbackThis;
var p = Object.create(HTMLElement.prototype);
p.createdCallback = function() {
is(createdCallbackCalled, false, "Created callback should only be called once in this test.");
createdCallbackThis = this;
createdCallbackCalled = true;
};
p.attachedCallback = function() {
is(createdCallbackCalled, true, "created callback should be called before attached callback.");
is(attachedCallbackCalled, false, "attached callback should only be called on in this test.");
is(this, createdElement, "The 'this' value should be the custom element.");
attachedCallbackCalled = true;
};
p.detachedCallback = function() {
is(attachedCallbackCalled, true, "attached callback should be called before detached");
is(detachedCallbackCalled, false, "detached callback should only be called once in this test.");
is(this, createdElement, "The 'this' value should be the custom element.");
detachedCallbackCalled = true;
runNextTest();
};
p.attributeChangedCallback = function() {
ok(false, "attributeChanged callback should never be called in this test.");
};
document.registerElement("x-resolved", { prototype: p });
is(createdCallbackCalled, false, "Created callback should not be called when custom element instance has not been created.");
var createdElement = document.createElement("x-resolved");
is(createdCallbackThis, createdElement, "The 'this' value in the created callback should be the custom element.");
is(createdElement.__proto__, p, "Prototype of custom element should be the registered prototype.");
// Insert element into document to trigger attached callback.
container.appendChild(createdElement);
// Remove element from document to trigger detached callback.
container.removeChild(createdElement);
}
// Callbacks should always be the same ones when registered.
function testChangingCallback() {
var p = Object.create(HTMLElement.prototype);
var callbackCalled = false;
p.attributeChangedCallback = function(name, oldValue, newValue) {
is(callbackCalled, false, "Callback should only be called once in this test.");
callbackCalled = true;
runNextTest();
};
document.registerElement("x-test-callback", { prototype: p });
p.attributeChangedCallback = function(name, oldValue, newValue) {
ok(false, "Only callbacks at registration should be called.");
};
var elem = document.createElement("x-test-callback");
elem.setAttribute("foo", "bar");
}
function testAttributeChanged() {
var createdCallbackCalled = false;
var createdElement;
var createdCallbackThis;
var p = Object.create(HTMLElement.prototype);
p.createdCallback = function() {
is(createdCallbackCalled, false, "Created callback should only be called once in this test.");
createdCallbackThis = this;
createdCallbackCalled = true;
};
// Sequence of callback arguments that we expect from attribute changed callback
// after changing attributes values in a specific order.
var expectedCallbackArguments = [
// [oldValue, newValue]
[null, "newvalue"], // Setting the attribute value to "newvalue"
["newvalue", "nextvalue"], // Changing the attribute value from "newvalue" to "nextvalue"
["nextvalue", ""], // Changing the attribute value from "nextvalue" to empty string
["", null], // Removing the attribute.
];
p.attributeChangedCallback = function(name, oldValue, newValue) {
is(createdCallbackCalled, true, "created callback should be called before attribute changed.");
is(this, createdElement, "The 'this' value should be the custom element.");
ok(expectedCallbackArguments.length > 0, "Attribute changed callback should not be called more than expected.");
is(name, "changeme", "name arugment in attribute changed callback should be the name of the changed attribute.");
var expectedArgs = expectedCallbackArguments.shift();
is(oldValue, expectedArgs[0], "The old value argument should match the expected value.");
is(newValue, expectedArgs[1], "The new value argument should match the expected value.");
if (expectedCallbackArguments.length === 0) {
// Done with the attribute changed callback test.
runNextTest();
}
};
document.registerElement("x-attrchange", { prototype: p });
var createdElement = document.createElement("x-attrchange");
is(createdCallbackThis, createdElement, "The 'this' value in the created callback should be the custom element.");
createdElement.setAttribute("changeme", "newvalue");
createdElement.setAttribute("changeme", "nextvalue");
createdElement.setAttribute("changeme", "");
createdElement.removeAttribute("changeme");
}
function testAttributeChangedExtended() {
var p = Object.create(HTMLButtonElement.prototype);
var callbackCalled = false;
p.attributeChangedCallback = function(name, oldValue, newValue) {
is(callbackCalled, false, "Callback should only be called once in this test.");
callbackCalled = true;
runNextTest();
};
document.registerElement("x-extended-attribute-change", { prototype: p, extends: "button" });
var elem = document.createElement("button", {is: "x-extended-attribute-change"});
elem.setAttribute("foo", "bar");
}
// Creates a custom element that is an upgrade candidate (no registration)
// and mutate the element in ways that would call callbacks for registered
// elements.
function testUpgradeCandidate() {
var createdElement = document.createElement("x-upgrade-candidate");
container.appendChild(createdElement);
createdElement.setAttribute("foo", "bar");
container.removeChild(createdElement);
ok(true, "Nothing bad should happen when trying to mutating upgrade candidates.");
runNextTest();
}
function testNotInDocEnterLeave() {
var p = Object.create(HTMLElement.prototype);
p.attached = function() {
ok(false, "attached should not be called when not entering the document.");
};
p.detached = function() {
ok(false, "leaveView should not be called when not leaving the document.");
};
var createdElement = document.createElement("x-destined-for-fragment");
document.registerElement("x-destined-for-fragment", { prototype: p });
var fragment = new DocumentFragment();
fragment.appendChild(createdElement);
fragment.removeChild(createdElement);
var divNotInDoc = document.createElement("div");
divNotInDoc.appendChild(createdElement);
divNotInDoc.removeChild(createdElement);
runNextTest();
}
function testEnterLeaveView() {
var attachedCallbackCalled = false;
var detachedCallbackCalled = false;
var p = Object.create(HTMLElement.prototype);
p.attachedCallback = function() {
is(attachedCallbackCalled, false, "attached callback should only be called on in this test.");
attachedCallbackCalled = true;
};
p.detachedCallback = function() {
is(attachedCallbackCalled, true, "attached callback should be called before detached");
is(detachedCallbackCalled, false, "detached callback should only be called once in this test.");
detachedCallbackCalled = true;
runNextTest();
};
var div = document.createElement("div");
document.registerElement("x-element-in-div", { prototype: p });
var customElement = document.createElement("x-element-in-div");
div.appendChild(customElement);
is(attachedCallbackCalled, false, "Appending a custom element to a node that is not in the document should not call the attached callback.");
container.appendChild(div);
container.removeChild(div);
}
var testFunctions = [
testRegisterUnresolved,
testRegisterUnresolvedExtended,
testInnerHTML,
testInnerHTMLExtended,
testInnerHTMLUpgrade,
testInnerHTMLExtendedUpgrade,
testRegisterResolved,
testAttributeChanged,
testAttributeChangedExtended,
testUpgradeCandidate,
testChangingCallback,
testNotInDocEnterLeave,
testEnterLeaveView,
SimpleTest.finish
];
function runNextTest() {
if (testFunctions.length > 0) {
var nextTestFunction = testFunctions.shift();
nextTestFunction();
}
}
SimpleTest.waitForExplicitFinish();
runNextTest();
</script>
</body>
</html>
|
