add settings.js

apps/torch/settings.js

@@ -0,0 +1,38 @@
+(function(back) {
+  const SETTINGS_FILE = "torch.json";
+
+  // initialize with default settings...
+  let s = {'bg': '#0f0', 'color': 'Green'}
+
+  // ...and overwrite them with any saved values
+  // This way saved values are preserved if a new version adds more settings
+  const storage = require('Storage')
+  let settings = storage.readJSON(SETTINGS_FILE, 1) || s;
+  const saved = settings || {}
+  for (const key in saved) {
+    s[key] = saved[key]
+  }
+
+  function save() {
+    settings = s
+    storage.write(SETTINGS_FILE, settings)
+  }
+
+  var color_options = ['Green','Orange','Cyan','Purple','Red','Blue','Yellow'];
+  var bg_code = ['#0f0','#ff0','#0ff','#f0f','#f00','#00f','#ffef00'];
+  
+  E.showMenu({
+    '': { 'title': 'Torch' },
+    '< Back': back,
+    'Colour': {
+      value: 0 | color_options.indexOf(s.color),
+      min: 0, max: 5,
+      format: v => color_options[v],
+      onchange: v => {
+        s.color = color_options[v];
+        s.bg = bg_code[v];
+        save();
+      },
+    }
+  });
+})