Settings for disabling specific apps

apps/backswipe/boot.js

@@ -1,4 +1,6 @@
 (function () {
+  var settings = require("Storage").readJSON("backswipe.json", 1) || {};
+
   // Overrride the default setUI method, so we can save the back button callback
   var setUI = Bangle.setUI;
   Bangle.setUI = function (mode, cb) {
@@ -7,9 +9,11 @@
       options = mode;
     }
 
+    var currentFile = global.__FILE__ || "";
+
     print("Setting UI");
     if(global.BACK) delete global.BACK;
-    if (options && options.back) {
+    if (options && options.back && enabledForApp(currentFile)) {
       print("Saving back callback");
       global.BACK = options.back;
     }
@@ -28,6 +32,17 @@
     }
   }
 
+  function enabledForApp(app) {
+    if (!settings) return true;
+    if (settings.mode === "blacklist") {
+      return !settings.apps.includes(app);
+    } else if (settings.mode === "whitelist") {
+      return settings.apps.includes(app);
+    } else {
+      return settings.mode === "on" ? true : false;
+    }
+  }
+  
   // Listen to left to right swipe
   Bangle.on("swipe", goBack);
 })();

apps/backswipe/metadata.json

@@ -8,6 +8,10 @@
   "supports" : ["BANGLEJS2"],
   "type": "bootloader",
   "storage": [
-    {"name":"backswipe.boot.js","url":"boot.js"}
+    {"name":"backswipe.boot.js","url":"boot.js"},
+    {"name":"backswipe.settings.js","url":"settings.js"}
+  ],
+  "data": [
+    {"name":"backswipe.json"}
   ]
 }

apps/backswipe/settings.js

@@ -0,0 +1,103 @@
+(function() {
+    var FILE = 'backswipe.json';
+    // Mode can be 'blacklist', 'whitelist', 'on' or 'disabled'
+    // Apps is an array of app names, where all the apps that are there are either blocked or allowed, depending on the mode
+    var DEFAULTS = {
+        'mode': 'blacklist',
+        'apps': []
+    };
+
+    var settings = {};
+    
+    var loadSettings = function() {
+        var settings = require('Storage').readJSON(FILE, 1) || DEFAULTS;
+        return settings;
+    }
+
+    var saveSettings = function(settings) {
+        require('Storage').write(FILE, settings);
+    }
+
+    var getApps = function() {
+        var apps = require('Storage').list(/\.info$/).map(app => {
+            return app.replace('.info', '');
+        });
+        return apps;
+    }
+
+    var getSettings = function() {
+        var settings = loadSettings();
+        return {
+            mode: settings.mode,
+            apps: settings.apps,
+        };
+    }
+
+    var showMenu = function() {
+        var settings = getSettings();
+        var menu = {
+            '': { 'title': 'Backswipe' },
+            '< Back': () => {
+                load();
+                E.showMenu();
+            },
+            'Mode': {
+                value: settings.mode,
+                format: v => v,
+                onchange: v => {
+                    settings.mode = v;
+                },
+                options: ['blacklist', 'whitelist', 'on', 'disabled']
+            },
+            'App List': {
+                value: '',
+                format: v => v,
+                onchange: v => {
+                    showAppSubMenu();
+                }
+            }
+        };
+        
+        E.showMenu(menu);
+    }
+
+    var showAppSubMenu = function() {
+        var menu = {
+            '': { 'title': 'Backswipe' },
+            '< Back': () => {
+                showMenu();
+            },
+            'Add App': () => {
+                showAppList();
+            }
+        };
+        settings.apps.forEach(app => {
+            menu[app.app] = () => {
+                settings.apps.splice(settings.apps.indexOf(app), 1);
+            }
+            saveSettings(settings);
+        });
+        E.showMenu(menu);
+    }
+
+    var showAppList = function() {
+        var apps = getApps();
+        var menu = {
+            '': { 'title': 'Backswipe' },
+            '< Back': () => {
+                showMenu();
+            }
+        };
+        apps.forEach(app => {
+            menu[app] = () => {
+                settings.apps.push(app);
+                saveSettings(settings);
+                showAppSubMenu();
+            }
+        });
+        E.showMenu(menu);
+    }
+
+    loadSettings();
+    showMenu();
+})