mozilla-central/dom/events/test/test_mouse_enterleave_iframe.html

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Test Info: Errors

<!doctype html>
<meta charset="utf-8">
<title>Test mouseenter and mouseleave for iframe.</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<script src="/tests/gfx/layers/apz/test/mochitest/apz_test_utils.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
<style>
#start {
width: 300px;
height: 30px;
}
#target, #target2 {
width: 150px;
height: 150px;
background-color: #fcc;
display: inline-block;
}
#frame, #frame2 {
height: 100%;
width: 100%;
}
#reflow, #div {
width: 300px;
height: 10px;
background-color: lightgreen;
}
</style>
<div id="start">Start from here!!</div>
<div id="div"></div>
<div id="target">
<iframe id="frame" frameborder="0" scrolling="no"></iframe>
</div>
<div id="target2">
<iframe id="frame2" frameborder="0" scrolling="no"></iframe>
</div>
<div id="reflow"></div>
<script>
function reflow() {
let div = document.getElementById("reflow");
div.style.display = "none";
div.getBoundingClientRect();
div.style.display = "block";
div.getBoundingClientRect();
}
function waitForMessage(aRemoteTarget, aEventType, aTargetName, aLastExpectedElement) {
return new Promise(function (aResolve, aReject) {
const data = `waiting for "${aEventType}" on <${aTargetName}> in <iframe id="${aRemoteTarget.id}">`;
let expectedMessageReceived = false;
window.addEventListener("message", function listener(aEvent) {
if (aEvent.source != aRemoteTarget.contentWindow) {
return;
}
if (aEvent.data.eventType == "reflowed") {
if (expectedMessageReceived) {
window.removeEventListener("message", listener);
aResolve();
ok(true, `Message listener ${data} is correctly removed`);
}
return;
}
if (aEvent.data.eventType !== aEventType) {
window.removeEventListener("message", listener);
is(
aEvent.data.eventType,
aEventType,
`receive unexpected message ${JSON.stringify(aEvent.data)} at ${data}`
);
aReject(new Error(`receive unexpected message ${JSON.stringify(aEvent.data)} at ${data}`));
return;
}
if (aEvent.data.targetName !== aTargetName) {
return;
}
if (expectedMessageReceived) {
window.removeEventListener("message", listener);
ok(false, `receive redundant message at ${data}`);
aReject(new Error(`receive redundant message at ${data}`));
return;
}
expectedMessageReceived = true;
ok(true, `receive message at ${data}`);
if (aLastExpectedElement) {
// Trigger a reflow which will generate synthesized mouse move event.
aRemoteTarget.contentWindow.postMessage("reflow", "*");
}
});
});
}
/**
* Wait for "mouseenter" events in a child document.
*
* @param aRemoteTarget An <iframe> element which has the child document.
* @param aTargetNames An array of `mouseenter` targets which you want to
* listen to. The order should be ancestor to descendant.
*/
function waitForMouseEnterMessages(aRemoteTarget, aTargetNames) {
let promises = [];
let targetName;
while ((targetName = aTargetNames.shift())) {
promises.push(
waitForMessage(aRemoteTarget, "mouseenter", targetName, !aTargetNames.length)
);
}
return Promise.all(promises);
}
/**
* Wait for "mouseleave" events in a child document.
*
* @param aRemoteTarget An <iframe> element which has the child document.
* @param aTargetNames An array of `mouseleave` targets which you want to
* listen to. The order should be ancestor to descendant.
*/
function waitForMouseLeaveMessages(aRemoteTarget, aTargetNames) {
let promises = [];
let targetName;
while ((targetName = aTargetNames.pop())) {
promises.push(
waitForMessage(aRemoteTarget, "mouseleave", targetName, !aTargetNames.length)
);
}
return Promise.all(promises);
}
function waitForLeaveEvent(aTarget) {
return new Promise(function(aResolve) {
aTarget.addEventListener("mouseleave", function(aEvent) {
ok(true, `receive ${aEvent.type}`);
aResolve();
}, { once: true });
});
}
function waitForEnterLeaveEvents(aEnterTarget, aLeaveTarget) {
let expectedEvents = [{target: aEnterTarget, eventName: "mouseenter"}];
if (aLeaveTarget) {
expectedEvents.push({target: aLeaveTarget, eventName: "mouseleave"})
}
return new Promise(function(aResolve, aReject) {
function cleanup() {
aEnterTarget.removeEventListener("mouseenter", listener);
aEnterTarget.removeEventListener("mouseleave", unexpectedEvent);
if (aLeaveTarget) {
aLeaveTarget.removeEventListener("mouseenter", unexpectedEvent);
aLeaveTarget.removeEventListener("mouseleave", listener);
}
}
function unexpectedEvent(aEvent) {
cleanup();
ok(false, `receive unexpected ${aEvent.type}`);
aReject(new Error(`receive unexpected ${aEvent.type}`));
}
async function listener(aEvent) {
if (expectedEvents.length <= 0) {
unexpectedEvent(aEvent);
return;
}
let expectedEvent = expectedEvents.pop();
if (expectedEvent.target == aEvent.target &&
expectedEvent.eventName == aEvent.type) {
ok(true, `receive ${aEvent.type}`);
} else {
unexpectedEvent(aEvent);
return;
}
if (!expectedEvents.length) {
// Trigger a reflow which will generate synthesized mouse move event.
reflow();
// Now wait a bit to see if there is any unexpected event fired.
setTimeout(function() {
cleanup();
aResolve();
}, 0);
}
}
aEnterTarget.addEventListener("mouseenter", listener);
aEnterTarget.addEventListener("mouseleave", unexpectedEvent);
if (aLeaveTarget) {
aLeaveTarget.addEventListener("mouseenter", unexpectedEvent);
aLeaveTarget.addEventListener("mouseleave", listener);
}
});
}
function moveMouseToInitialPosition() {
info("Mouse moves to initial position");
return promiseNativeMouseEvent({
type: "mousemove",
target: document.getElementById("start"),
atCenter: true,
});
}
add_setup(async function() {
// Wait for focus before starting tests.
await SimpleTest.promiseFocus();
// Wait for apz getting stable.
await waitUntilApzStable();
// Move mouse to initial position.
await moveMouseToInitialPosition();
// After initializing the mouse cursor position, we should load <iframe>s.
// This avoids the case that the cursor is over one of them.
info("Load child documents into the iframes");
let promiseLoadingIFrames = [];
for (const iframe of document.querySelectorAll("iframe")) {
promiseLoadingIFrames.push(
new Promise(resolve => { iframe.addEventListener("load", resolve, {once: true}); })
);
}
await Promise.all(promiseLoadingIFrames);
});
add_task(async function testMouseEnterLeave() {
let div = document.getElementById("div");
let target = document.getElementById("target");
let iframe = document.getElementById("frame");
info("Mouse moves to the div above iframe");
let promise = waitForEnterLeaveEvents(div);
synthesizeNativeMouseEvent({
type: "mousemove",
target: div,
atCenter: true,
});
await promise;
info("Mouse moves into iframe");
promise = Promise.all([waitForEnterLeaveEvents(target, div),
waitForMouseEnterMessages(iframe, ["html", "div"])]);
synthesizeNativeMouseEvent({
type: "mousemove",
target,
atCenter: true,
});
await promise;
info("Mouse moves out from iframe to the div above iframe");
promise = Promise.all([waitForEnterLeaveEvents(div, target),
waitForMouseLeaveMessages(iframe, ["html", "div"])]);
synthesizeNativeMouseEvent({
type: "mousemove",
target: div,
atCenter: true,
});
await promise;
// Move mouse back to initial position. This is to prevent unexpected
// mouseleave event in initial steps for test-verify which runs same test
// multiple times.
await moveMouseToInitialPosition();
});
add_task(async function testMouseEnterLeaveBetweenIframe() {
let target = document.getElementById("target");
let iframe = document.getElementById("frame");
info("Mouse moves into the first iframe");
let promise = Promise.all([waitForEnterLeaveEvents(target),
waitForMouseEnterMessages(iframe, ["html", "div"])]);
synthesizeNativeMouseEvent({
type: "mousemove",
target,
atCenter: true,
});
await promise;
let target2 = document.getElementById("target2");
let iframe2 = document.getElementById("frame2");
info("Mouse moves out from the first iframe to the second iframe");
promise = Promise.all([waitForEnterLeaveEvents(target2, target),
waitForMouseLeaveMessages(iframe, ["html", "div"]),
waitForMouseEnterMessages(iframe2, ["html", "div"])]);
synthesizeNativeMouseEvent({
type: "mousemove",
target: target2,
atCenter: true,
})
await promise;
info("Mouse moves out from the second iframe to the first iframe");
promise = Promise.all([waitForEnterLeaveEvents(target, target2),
waitForMouseLeaveMessages(iframe2, ["html", "div"]),
waitForMouseEnterMessages(iframe, ["html", "div"])]);
synthesizeNativeMouseEvent({
type: "mousemove",
target,
atCenter: true,
});
await promise;
// Move mouse back to initial position.
await Promise.all([waitForLeaveEvent(target),
waitForMouseLeaveMessages(iframe, ["html", "div"]),
moveMouseToInitialPosition()]);
});
add_task(async function testMouseEnterLeaveSwitchWindow() {
let target = document.getElementById("target");
let iframe = document.getElementById("frame");
info("Mouse moves into iframe");
let promise = Promise.all([waitForEnterLeaveEvents(target),
waitForMouseEnterMessages(iframe, ["html", "div"])]);
synthesizeNativeMouseEvent({
type: "mousemove",
target,
atCenter: true,
});
await promise;
info("Open and switch to new window");
promise = Promise.all([waitForLeaveEvent(target),
waitForMouseLeaveMessages(iframe, ["html", "div"])]);
// Trigger a reflow which will generate synthesized mouse move event.
win.postMessage("reflow", "*");
await promise;
info("Switch back to test window");
promise = Promise.all([waitForEnterLeaveEvents(target),
waitForMouseEnterMessages(iframe, ["html", "div"])]);
win.close();
// Trigger a reflow which will generate synthesized mouse move event.
reflow();
// Wait for apz getting stable.
await waitUntilApzStable();
synthesizeNativeMouseEvent({
type: "mousemove",
target,
atCenter: true,
});
await promise;
// Move mouse back to initial position.
await Promise.all([waitForLeaveEvent(target),
moveMouseToInitialPosition()]);
});
</script>