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'use strict';
function waitForEvent(target, type, options) {
return new Promise((resolve, reject) => {
target.addEventListener(type, resolve, options);
});
}
function waitForAnimationFrame(w) {
let targetWindow = w || window;
return new Promise((resolve, reject) => {
targetWindow.requestAnimationFrame(resolve);
});
}
function waitForEvent(target, type, options) {
return new Promise((resolve, reject) => {
target.addEventListener(type, resolve, options);
});
}
function waitForLoad(target) {
return waitForEvent(target, 'load');
}
function timeOut(test, ms) {
return new Promise((resolve, reject) => {
test.step_timeout(resolve, ms);
});
}
// If an element with autofocus is connected to a document and this function
// is called, the autofocus result is deterministic after returning from the
// function.
// Exception: If the document has script-blocking style sheets, this function
// doesn't work well.
async function waitUntilStableAutofocusState(w) {
let targetWindow = w || window;
// Awaiting one animation frame is an easy way to determine autofocus state.
await waitForAnimationFrame(targetWindow);
}
async function waitForIframeLoad(src, w = window) {
const iframe = w.document.createElement("iframe");
let loadPromise = new Promise(resolve => {
iframe.addEventListener("load", () => resolve(iframe));
});
iframe.src = src;
w.document.body.appendChild(iframe);
return loadPromise;
}