Cache settings in local storage

js/configurator_main.js

@@ -24,6 +24,7 @@ const update = require('./globalUpdates');
 const appUpdater = require('./appUpdater');
 const CliAutoComplete = require('./CliAutoComplete');
 const { SITLProcess } = require('./sitl');
+const settingsCache = require('./settingsCache');
 
 process.on('uncaughtException', function (error) {   
     if (process.env.NODE_ENV !== 'development') {
@@ -385,6 +386,9 @@ $(function() {
                     $('#demoModeReset').on('click', function () {
                         SITLProcess.deleteEepromFile('demo.bin');
                     });
+                    $('#maintenanceFlushSettingsCache').on('click', function () {
+                        settingsCache.flush();
+                    });
                     function close_and_cleanup(e) {
                         if (e.type == 'click' && !$.contains($('div#options-window')[0], e.target) || e.type == 'keyup' && e.keyCode == 27) {
                             $(document).unbind('click keyup', close_and_cleanup);

js/fc.js

@@ -78,7 +78,6 @@ var FC = {
     MIXER_CONFIG: null,
     BATTERY_CONFIG: null,
     OUTPUT_MAPPING: null,
-    SETTINGS: null,
     BRAKING_CONFIG: null,
     SAFEHOMES: null,
     BOARD_ALIGNMENT: null,
@@ -570,8 +569,6 @@ var FC = {
 
         this.OUTPUT_MAPPING = new OutputMappingCollection();
 
-        this.SETTINGS = {};
-
         this.SAFEHOMES = new SafehomeCollection();
 
         this.RATE_DYNAMICS = {

js/msp/MSPHelper.js

@@ -20,6 +20,7 @@ const { FwApproach } = require('./../fwApproach');
 const Waypoint = require('./../waypoint');
 const mspDeduplicationQueue = require('./mspDeduplicationQueue');
 const mspStatistics = require('./mspStatistics');
+const settingsCache = require('./../settingsCache');
 
 var mspHelper = (function () {
     var self = {};
@@ -3060,9 +3061,12 @@ var mspHelper = (function () {
     };
 
     self._getSetting = function (name) {
-        if (FC.SETTINGS[name]) {
-            return Promise.resolve(FC.SETTINGS[name]);
+
+        const storedSetting = settingsCache.get(name);
+        if (typeof storedSetting !== 'undefined') {
+            return Promise.resolve(storedSetting);
         }
+
         var data = [];
         self._encodeSettingReference(name, null, data);
         return MSP.promise(MSPCodes.MSP2_COMMON_SETTING_INFO, data).then(function (result) {
@@ -3109,7 +3113,7 @@ var mspHelper = (function () {
                 }
                 setting.table = { values: values };
             }
-            FC.SETTINGS[name] = setting;
+            settingsCache.set(name, setting);
             return setting;
         });
     }

js/settingsCache.js

@@ -0,0 +1,47 @@
+'use strict';
+
+const Store = require('electron-store');
+const store = new Store();
+const FC = require('./fc');
+
+var settingsCache = (function() {
+
+    let publicScope = {};
+    let privateScope = {};
+
+    const SETTINGS_KEY = 'settings';
+
+    privateScope.getSetingKey = function(settingName) {
+        return FC.CONFIG.target + '_' + FC.CONFIG.flightControllerVersion + '_' + settingName;
+    }
+
+    publicScope.flush = function() {
+        store.delete(SETTINGS_KEY);
+        console.log('Settings cache flushed');
+    };
+
+    publicScope.get = function(settingName) {
+        let settings = store.get(SETTINGS_KEY, null);
+
+        if (settings === null) {
+            return undefined;
+        }
+        let setting = settings[privateScope.getSetingKey(settingName)];
+        return setting;
+    };
+
+    publicScope.set = function(settingName, value) {
+        let settings = store.get(SETTINGS_KEY, null);
+
+        if (settings === null) {
+            settings = {};
+        }
+
+        settings[privateScope.getSetingKey(settingName)] = value;
+        store.set(SETTINGS_KEY, settings);
+    };
+
+    return publicScope;
+}());
+
+module.exports = settingsCache;

locale/en/messages.json

@@ -5812,5 +5812,11 @@
     },
     "gsTelemetrySpeed": {
         "message": "Speed"
+    },
+    "maintenance": {
+        "message": "Maintenance"
+    },
+    "maintenanceFlushSettingsCache": {
+        "message": "Flush settings cache"
     }
 }

tabs/options.html

@@ -87,5 +87,15 @@
                 </div>
             </div>
         </div>
+        <div class="options-section gui_box grey">
+            <div class="gui_box_titlebar">
+                <div class="spacer_box_title" data-i18n="maintenance"></div>
+            </div>
+            <div class="spacer_box settings">
+                <div class="default_btn" style="float: none; width: 200px;">
+                    <a id="maintenanceFlushSettingsCache" href="#" i18n="maintenanceFlushSettingsCache"></a>
+                </div>
+            </div>
+        </div>
     </div>
 </div>