7ea4008daa
This implements a dream of one day being able to listen for changes in a settings to react to them, regardless of which device actually changed the setting. The use case for this kind of thing is extremely limited, but when it is needed it should be more than powerful enough.
95 lines
3.1 KiB
JavaScript
95 lines
3.1 KiB
JavaScript
/*
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Copyright 2017 Travis Ralston
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Copyright 2019 New Vector Ltd.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import Promise from 'bluebird';
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import SettingsHandler from "./SettingsHandler";
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import {WatchManager} from "../WatchManager";
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/**
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* Gets and sets settings at the "room-device" level for the current device in a particular
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* room.
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*/
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export default class RoomDeviceSettingsHandler extends SettingsHandler {
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constructor() {
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super();
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this._watchers = new WatchManager();
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}
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getValue(settingName, roomId) {
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// Special case blacklist setting to use legacy values
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if (settingName === "blacklistUnverifiedDevices") {
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const value = this._read("mx_local_settings");
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if (value && value['blacklistUnverifiedDevicesPerRoom']) {
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return value['blacklistUnverifiedDevicesPerRoom'][roomId];
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}
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}
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const value = this._read(this._getKey(settingName, roomId));
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if (value) return value.value;
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return null;
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}
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setValue(settingName, roomId, newValue) {
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// Special case blacklist setting for legacy structure
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if (settingName === "blacklistUnverifiedDevices") {
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let value = this._read("mx_local_settings");
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if (!value) value = {};
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if (!value["blacklistUnverifiedDevicesPerRoom"]) value["blacklistUnverifiedDevicesPerRoom"] = {};
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value["blacklistUnverifiedDevicesPerRoom"][roomId] = newValue;
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localStorage.setItem("mx_local_settings", JSON.stringify(value));
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this._watchers.notifyUpdate(settingName, roomId, newValue);
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return Promise.resolve();
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}
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if (newValue === null) {
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localStorage.removeItem(this._getKey(settingName, roomId));
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} else {
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newValue = JSON.stringify({value: newValue});
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localStorage.setItem(this._getKey(settingName, roomId), newValue);
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}
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this._watchers.notifyUpdate(settingName, roomId, newValue);
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return Promise.resolve();
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}
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canSetValue(settingName, roomId) {
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return true; // It's their device, so they should be able to
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}
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isSupported() {
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return localStorage !== undefined && localStorage !== null;
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}
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watchSetting(settingName, roomId, cb) {
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this._watchers.watchSetting(settingName, roomId, cb);
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}
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unwatchSetting(cb) {
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this._watchers.unwatchSetting(cb);
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}
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_read(key) {
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const rawValue = localStorage.getItem(key);
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if (!rawValue) return null;
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return JSON.parse(rawValue);
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}
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_getKey(settingName, roomId) {
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return "mx_setting_" + settingName + "_" + roomId;
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}
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}
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