Add settings to configure prompt

apps/poweroff/ChangeLog

@@ -1,2 +1,3 @@
 0.01: New app!
 0.02: Add prompt before shutdown
+0.03: Add settings to configure prompt

apps/poweroff/app.js

@@ -1,14 +1,19 @@
 g.clear();
 
-E.showPrompt('Are you sure?', {
+let settings = require('Storage').readJSON("poweroff.json", true) || {};
+let showPrompt;
+showPrompt = def(settings.showPrompt, true);
+
+if (showPrompt) {
+ E.showPrompt('Are you sure?', {
   title: 'Power off',
   buttons: { Yes: true, No: false },
-}).then((confirm) => {
+ }).then((confirm) => {
   if (!confirm) {
     setTimeout(load, 100);
     return;
   }
-
+}
   g.setFont("6x8",2).setFontAlign(0,0);
   var x = g.getWidth()/2;
   var y = g.getHeight()/2 + 10;

apps/poweroff/metadata.json

@@ -1,7 +1,7 @@
 { "id": "poweroff",
 "name": "Poweroff",
 "shortName":"Poweroff",
-"version":"0.02",
+"version":"0.03",
 "description": "Simple app to power off your Bangle.js",
 "icon": "app.png",
 "tags": "tool, poweroff, shutdown",
@@ -10,6 +10,10 @@
 "allow_emulator": true,
 "storage": [
   {"name":"poweroff.app.js","url":"app.js"},
-  {"name":"poweroff.img","url":"app-icon.js","evaluate":true}
+  {"name":"poweroff.img","url":"app-icon.js","evaluate":true},
-]
+  {"name":"poweroff.settings.js","url":"settings.js"}
+],
+"data": [
+  {"name":"poweroff.json"}
+  ]
 }

apps/poweroff/settings.js

@@ -0,0 +1,46 @@
+(function(back) {
+  var FILE = "poweroff.json";
+  var settings = Object.assign({
+    secondsOnUnlock: false,
+  }, require('Storage').readJSON(FILE, true) || {});
+
+  function writeSettings() {
+    require('Storage').writeJSON(FILE, settings);
+  }
+
+  // Helper method which uses int-based menu item for set of string values
+  function stringItems(startvalue, writer, values) {
+    return {
+      value: (startvalue === undefined ? 0 : values.indexOf(startvalue)),
+      format: v => values[v],
+      min: 0,
+      max: values.length - 1,
+      wrap: true,
+      step: 1,
+      onchange: v => {
+        writer(values[v]);
+        writeSettings();
+      }
+    };
+  }
+
+  // Helper method which breaks string set settings down to local settings object
+  function stringInSettings(name, values) {
+    return stringItems(settings[name], v => settings[name] = v, values);
+  }
+
+  var mainmenu = {
+    "": {
+      "title": "Poweroff"
+    },
+    "< Back": () => back(),
+    "Show prompt": {
+    value: (settings.showPrompt !== undefined ? settings.showPrompt : true),
+    onchange: v => {
+      settings.showPrompt = v;
+      writeSettings();
+    }
+  }
+  };
+  E.showMenu(mainmenu);
+});