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56 lines
2.0 KiB
JavaScript
56 lines
2.0 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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function promiseBrowserEvent(browser, eventType) {
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return new Promise((resolve) => {
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function handle(event) {
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// Since we'll be redirecting, don't make assumptions about the given URL and the loaded URL
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if (event.target != browser.contentDocument || event.target.location.href == "about:blank") {
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info("Skipping spurious '" + eventType + "' event" + " for " + event.target.location.href);
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return;
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}
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info("Received event " + eventType + " from browser");
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browser.removeEventListener(eventType, handle, true);
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resolve(event);
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}
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browser.addEventListener(eventType, handle, true);
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info("Now waiting for " + eventType + " event from browser");
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});
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}
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function promiseNotification(topic) {
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Cu.import("resource://gre/modules/Services.jsm");
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return new Promise((resolve, reject) => {
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function observe(subject, topic, data) {
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info("Received " + topic + " notification from Gecko");
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Services.obs.removeObserver(observe, topic);
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resolve();
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}
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Services.obs.addObserver(observe, topic, false);
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info("Now waiting for " + topic + " notification from Gecko");
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});
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}
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function promiseLinkVisit(url) {
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Cu.import("resource://gre/modules/Services.jsm");
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var topic = "link-visited";
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return new Promise((resolve, reject) => {
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function observe(subject, topic, data) {
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info("Received " + topic + " notification from Gecko");
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var uri = subject.QueryInterface(Ci.nsIURI);
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if (uri.spec != url) {
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info("Visited URL " + uri.spec + " is not desired URL " + url + "; ignoring.");
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return;
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}
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info("Visited URL " + uri.spec + " is desired URL " + url);
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Services.obs.removeObserver(observe, topic);
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resolve();
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};
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Services.obs.addObserver(observe, topic, false);
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info("Now waiting for " + topic + " notification from Gecko with URL " + url);
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});
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}
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