138 lines
3.4 KiB
TypeScript
138 lines
3.4 KiB
TypeScript
import { ApplicationService } from '@standardnotes/snjs';
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const MILLISECONDS_PER_SECOND = 1000;
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const POLL_INTERVAL = 50;
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const LOCK_INTERVAL_NONE = 0;
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const LOCK_INTERVAL_IMMEDIATE = 1;
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const LOCK_INTERVAL_ONE_MINUTE = 60 * MILLISECONDS_PER_SECOND;
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const LOCK_INTERVAL_FIVE_MINUTES = 300 * MILLISECONDS_PER_SECOND;
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const LOCK_INTERVAL_ONE_HOUR = 3600 * MILLISECONDS_PER_SECOND;
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const STORAGE_KEY_AUTOLOCK_INTERVAL = "AutoLockIntervalKey";
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export class AutolockService extends ApplicationService {
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private pollInterval: any
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private lastFocusState?: 'hidden' | 'visible'
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private lockAfterDate?: Date
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onAppLaunch() {
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this.beginPolling();
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return super.onAppLaunch();
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}
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deinit() {
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this.cancelAutoLockTimer();
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if (this.pollInterval) {
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clearInterval(this.pollInterval);
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}
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}
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private lockApplication() {
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if (!this.application.hasPasscode()) {
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throw Error('Attempting to lock application with no passcode');
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}
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this.application.lock();
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}
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async setAutoLockInterval(interval: number) {
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return this.application!.setValue(
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STORAGE_KEY_AUTOLOCK_INTERVAL,
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interval
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);
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}
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async getAutoLockInterval() {
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const interval = await this.application!.getValue(
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STORAGE_KEY_AUTOLOCK_INTERVAL
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);
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if (interval) {
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return interval;
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} else {
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return LOCK_INTERVAL_NONE;
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}
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}
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async deleteAutolockPreference() {
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await this.application!.removeValue(
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STORAGE_KEY_AUTOLOCK_INTERVAL
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);
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this.cancelAutoLockTimer();
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}
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/**
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* Verify document is in focus every so often as visibilitychange event is
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* not triggered on a typical window blur event but rather on tab changes.
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*/
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beginPolling() {
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this.pollInterval = setInterval(async () => {
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const locked = await this.application.isLocked();
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if (
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!locked &&
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this.lockAfterDate &&
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new Date() > this.lockAfterDate
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) {
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this.lockApplication();
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}
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const hasFocus = document.hasFocus();
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if (hasFocus && this.lastFocusState === 'hidden') {
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this.documentVisibilityChanged(true);
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} else if (!hasFocus && this.lastFocusState === 'visible') {
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this.documentVisibilityChanged(false);
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}
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/* Save this to compare against next time around */
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this.lastFocusState = hasFocus ? 'visible' : 'hidden';
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}, POLL_INTERVAL);
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}
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getAutoLockIntervalOptions() {
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return [
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{
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value: LOCK_INTERVAL_NONE,
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label: "Off"
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},
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{
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value: LOCK_INTERVAL_IMMEDIATE,
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label: "Immediately"
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},
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{
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value: LOCK_INTERVAL_ONE_MINUTE,
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label: "1m"
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},
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{
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value: LOCK_INTERVAL_FIVE_MINUTES,
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label: "5m"
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},
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{
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value: LOCK_INTERVAL_ONE_HOUR,
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label: "1h"
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}
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];
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}
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async documentVisibilityChanged(visible: boolean) {
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if (visible) {
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this.cancelAutoLockTimer();
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} else {
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this.beginAutoLockTimer();
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}
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}
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async beginAutoLockTimer() {
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const interval = await this.getAutoLockInterval();
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if (interval === LOCK_INTERVAL_NONE) {
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return;
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}
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const addToNow = (seconds: number) => {
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const date = new Date();
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date.setSeconds(date.getSeconds() + seconds);
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return date;
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};
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this.lockAfterDate = addToNow(interval / MILLISECONDS_PER_SECOND);
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}
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cancelAutoLockTimer() {
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this.lockAfterDate = undefined;
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}
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}
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