91 lines
2.7 KiB
JavaScript
91 lines
2.7 KiB
JavaScript
"use strict";
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XPCOMUtils.defineLazyServiceGetter(this, "idleService",
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"@mozilla.org/widget/idleservice;1",
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"nsIIdleService");
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// WeakMap[Extension -> Object]
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let observersMap = new WeakMap();
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const getIdleObserverInfo = (extension, context) => {
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let observerInfo = observersMap.get(extension);
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if (!observerInfo) {
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observerInfo = {
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observer: null,
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detectionInterval: 60,
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};
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observersMap.set(extension, observerInfo);
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context.callOnClose({
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close: () => {
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let {observer, detectionInterval} = observersMap.get(extension);
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if (observer) {
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idleService.removeIdleObserver(observer, detectionInterval);
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}
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observersMap.delete(extension);
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},
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});
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}
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return observerInfo;
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};
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const getIdleObserver = (extension, context) => {
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let observerInfo = getIdleObserverInfo(extension, context);
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let {observer, detectionInterval} = observerInfo;
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if (!observer) {
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observer = new class extends ExtensionCommon.EventEmitter {
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observe(subject, topic, data) {
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if (topic == "idle" || topic == "active") {
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this.emit("stateChanged", topic);
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}
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}
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}();
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idleService.addIdleObserver(observer, detectionInterval);
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observerInfo.observer = observer;
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observerInfo.detectionInterval = detectionInterval;
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}
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return observer;
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};
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const setDetectionInterval = (extension, context, newInterval) => {
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let observerInfo = getIdleObserverInfo(extension, context);
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let {observer, detectionInterval} = observerInfo;
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if (observer) {
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idleService.removeIdleObserver(observer, detectionInterval);
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idleService.addIdleObserver(observer, newInterval);
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}
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observerInfo.detectionInterval = newInterval;
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};
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this.idle = class extends ExtensionAPI {
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getAPI(context) {
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let {extension} = context;
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return {
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idle: {
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queryState: function(detectionIntervalInSeconds) {
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if (idleService.idleTime < detectionIntervalInSeconds * 1000) {
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return Promise.resolve("active");
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}
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return Promise.resolve("idle");
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},
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setDetectionInterval: function(detectionIntervalInSeconds) {
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setDetectionInterval(extension, context, detectionIntervalInSeconds);
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},
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onStateChanged: new EventManager({
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context,
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name: "idle.onStateChanged",
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register: fire => {
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let listener = (event, data) => {
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fire.sync(data);
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};
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getIdleObserver(extension, context).on("stateChanged", listener);
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return () => {
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getIdleObserver(extension, context).off("stateChanged", listener);
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};
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},
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}).api(),
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},
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};
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}
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};
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