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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
// When a transition finishes, no "removed" event is sent because it may still
// be used, but when it restarts again (transitions back), then a new
// AnimationPlayerFront should be sent, and the old one should be removed.
add_task(function* () {
let {client, walker, animations} =
yield initAnimationsFrontForUrl(MAIN_DOMAIN + "animation.html");
info("Retrieve the test node");
let node = yield walker.querySelector(walker.rootNode, ".all-transitions");
info("Retrieve the animation players for the node");
let players = yield animations.getAnimationPlayersForNode(node);
is(players.length, 0, "The node has no animation players yet");
info("Play a transition by adding the expand class, wait for mutations");
let onMutations = expectMutationEvents(animations, 2);
let cpow = content.document.querySelector(".all-transitions");
cpow.classList.add("expand");
let reportedMutations = yield onMutations;
is(reportedMutations.length, 2, "2 mutation events were received");
is(reportedMutations[0].type, "added", "The first event was 'added'");
is(reportedMutations[1].type, "added", "The second event was 'added'");
info("Wait for the transitions to be finished");
yield waitForEnd(reportedMutations[0].player);
yield waitForEnd(reportedMutations[1].player);
info("Play the transition back by removing the class, wait for mutations");
onMutations = expectMutationEvents(animations, 4);
cpow.classList.remove("expand");
reportedMutations = yield onMutations;
is(reportedMutations.length, 4, "4 new mutation events were received");
is(reportedMutations.filter(m => m.type === "removed").length, 2,
"2 'removed' events were sent (for the old transitions)");
is(reportedMutations.filter(m => m.type === "added").length, 2,
"2 'added' events were sent (for the new transitions)");
yield client.close();
gBrowser.removeCurrentTab();
});
function expectMutationEvents(animationsFront, nbOfEvents) {
return new Promise(resolve => {
let reportedMutations = [];
function onMutations(mutations) {
reportedMutations = [...reportedMutations, ...mutations];
info("Received " + reportedMutations.length + " mutation events, " +
"expecting " + nbOfEvents);
if (reportedMutations.length === nbOfEvents) {
animationsFront.off("mutations", onMutations);
resolve(reportedMutations);
}
}
info("Start listening for mutation events from the AnimationsFront");
animationsFront.on("mutations", onMutations);
});
}
function* waitForEnd(animationFront) {
let playState;
while (playState !== "finished") {
let state = yield animationFront.getCurrentState();
playState = state.playState;
info("Wait for transition " + animationFront.state.name +
" to finish, playState=" + playState);
}
}
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