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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/* exported initAccService, shutdownAccService, waitForEvent, setE10sPrefs,
unsetE10sPrefs, accConsumersChanged */
// Load the shared-head file first.
Services.scriptloader.loadSubScript(
"chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
this
);
const { CommonUtils } = ChromeUtils.importESModule(
"chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"
);
/**
* Set e10s related preferences in the test environment.
* @return {Promise} promise that resolves when preferences are set.
*/
function setE10sPrefs() {
return new Promise(resolve =>
SpecialPowers.pushPrefEnv(
{
set: [["browser.tabs.remote.autostart", true]],
},
resolve
)
);
}
/**
* Unset e10s related preferences in the test environment.
* @return {Promise} promise that resolves when preferences are unset.
*/
function unsetE10sPrefs() {
return new Promise(resolve => {
SpecialPowers.popPrefEnv(resolve);
});
}
/**
* Capture when 'a11y-consumers-changed' event is fired.
*
* @param {?Object} target
* [optional] browser object that indicates that accessibility service
* is in content process.
* @return {Array}
* List of promises where first one is the promise for when the event
* observer is added and the second one for when the event is observed.
*/
function accConsumersChanged(target) {
return target
? [
SpecialPowers.spawn(target, [], () =>
content.CommonUtils.addAccConsumersChangedObserver()
),
SpecialPowers.spawn(target, [], () =>
content.CommonUtils.observeAccConsumersChanged()
),
]
: [
CommonUtils.addAccConsumersChangedObserver(),
CommonUtils.observeAccConsumersChanged(),
];
}
/**
* Capture when accessibility service is initialized.
*
* @param {?Object} target
* [optional] browser object that indicates that accessibility service
* is expected to be initialized in content process.
* @return {Array}
* List of promises where first one is the promise for when the event
* observer is added and the second one for when the event is observed.
*/
function initAccService(target) {
return target
? [
SpecialPowers.spawn(target, [], () =>
content.CommonUtils.addAccServiceInitializedObserver()
),
SpecialPowers.spawn(target, [], () =>
content.CommonUtils.observeAccServiceInitialized()
),
]
: [
CommonUtils.addAccServiceInitializedObserver(),
CommonUtils.observeAccServiceInitialized(),
];
}
/**
* Capture when accessibility service is shutdown.
*
* @param {?Object} target
* [optional] browser object that indicates that accessibility service
* is expected to be shutdown in content process.
* @return {Array}
* List of promises where first one is the promise for when the event
* observer is added and the second one for when the event is observed.
*/
function shutdownAccService(target) {
return target
? [
SpecialPowers.spawn(target, [], () =>
content.CommonUtils.addAccServiceShutdownObserver()
),
SpecialPowers.spawn(target, [], () =>
content.CommonUtils.observeAccServiceShutdown()
),
]
: [
CommonUtils.addAccServiceShutdownObserver(),
CommonUtils.observeAccServiceShutdown(),
];
}
/**
* Simpler verions of waitForEvent defined in
* accessible/tests/browser/events.js
*/
function waitForEvent(eventType, expectedId) {
return new Promise(resolve => {
let eventObserver = {
observe(subject) {
let event = subject.QueryInterface(Ci.nsIAccessibleEvent);
let id;
try {
id = event.accessible.id;
} catch (e) {
// This can throw NS_ERROR_FAILURE.
}
if (event.eventType === eventType && id === expectedId) {
Services.obs.removeObserver(this, "accessible-event");
resolve(event);
}
},
};
Services.obs.addObserver(eventObserver, "accessible-event");
});
}
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