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XPCOMUtils.defineLazyModuleGetter(this, "Promise",
"resource://gre/modules/Promise.jsm");
/* exported promiseTabLoadEvent, promiseWaitForCondition, is_element_visible, is_element_hidden */
/**
* Waits for a load (or custom) event to finish in a given tab. If provided
* load an uri into the tab.
*
* @param tab
* The tab to load into.
* @param [optional] url
* The url to load, or the current url.
* @return {Promise} resolved when the event is handled.
* @resolves to the received event
* @rejects if a valid load event is not received within a meaningful interval
*/
function promiseTabLoadEvent(tab, url) {
let deferred = Promise.defer();
info("Wait tab event: load");
function handle(loadedUrl) {
if (loadedUrl === "about:blank" || (url && loadedUrl !== url)) {
info(`Skipping spurious load event for ${loadedUrl}`);
return false;
}
info("Tab event received: load");
return true;
}
// Create two promises: one resolved from the content process when the page
// loads and one that is rejected if we take too long to load the url.
let loaded = BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, handle);
let timeout = setTimeout(() => {
deferred.reject(new Error("Timed out while waiting for a 'load' event"));
}, 30000);
loaded.then(() => {
clearTimeout(timeout);
deferred.resolve();
});
if (url)
BrowserTestUtils.loadURI(tab.linkedBrowser, url);
// Promise.all rejects if either promise rejects (i.e. if we time out) and
// if our loaded promise resolves before the timeout, then we resolve the
// timeout promise as well, causing the all promise to resolve.
return Promise.all([deferred.promise, loaded]);
}
function waitForCondition(condition, nextTest, errorMsg, retryTimes) {
retryTimes = typeof retryTimes !== 'undefined' ? retryTimes : 30;
var tries = 0;
var interval = setInterval(function() {
if (tries >= retryTimes) {
ok(false, errorMsg);
moveOn();
}
var conditionPassed;
try {
conditionPassed = condition();
} catch (e) {
ok(false, e + "\n" + e.stack);
conditionPassed = false;
}
if (conditionPassed) {
moveOn();
}
tries++;
}, 100);
var moveOn = function() {
clearInterval(interval);
nextTest();
};
}
function promiseWaitForCondition(aConditionFn) {
let deferred = Promise.defer();
waitForCondition(aConditionFn, deferred.resolve, "Condition didn't pass.");
return deferred.promise;
}
function is_element_visible(element, msg) {
isnot(element, null, "Element should not be null, when checking visibility");
ok(is_visible(element), msg || "Element should be visible");
}
function is_element_hidden(element, msg) {
isnot(element, null, "Element should not be null, when checking visibility");
ok(is_hidden(element), msg || "Element should be hidden");
}
function is_visible(element) {
var style = element.ownerGlobal.getComputedStyle(element);
if (style.display == "none")
return false;
if (style.visibility != "visible")
return false;
if (style.display == "-moz-popup" && element.state != "open")
return false;
// Hiding a parent element will hide all its children
if (element.parentNode != element.ownerDocument)
return is_visible(element.parentNode);
return true;
}
function is_hidden(element) {
var style = element.ownerGlobal.getComputedStyle(element);
if (style.display == "none")
return true;
if (style.visibility != "visible")
return true;
if (style.display == "-moz-popup")
return ["hiding", "closed"].indexOf(element.state) != -1;
// Hiding a parent element will hide all its children
if (element.parentNode != element.ownerDocument)
return is_hidden(element.parentNode);
return false;
}
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