examples/hello: Add inputs listing to app

examples/hello/app/simulator.nix

@@ -4,6 +4,7 @@
 , mrbgems
 , mruby
 , mobile-nixos
+, input-utils
 }:
 
 let
@@ -19,6 +20,9 @@ in
 (script-loader.wrap {
   name = "simulator";
   applet = "${applet}/libexec/app.mrb";
+  env = {
+    PATH = "${input-utils}/bin:$PATH";
+  };
 }).overrideAttrs(old: rec {
   pname = "hello-gui-simulator";
   version = "0.0.1";

examples/hello/app/windows/inputs.rb

@@ -0,0 +1,13 @@
+module GUI
+  class InputsWindow < BaseLogWindow
+    COMMAND = "lsinput"
+
+    def initialize()
+      super(explanation: "Output of #{COMMAND}")
+    end
+
+    def on_present()
+      set_text(`#{COMMAND} 2>&1`)
+    end
+  end
+end

examples/hello/app/windows/main.rb

@@ -13,6 +13,7 @@ module GUI
 
       add_buttons([
         ["Display validation", ->() { DisplayValidationWindow.instance.present }],
+        ["Input devices information", ->() { InputsWindow.instance.present }],
         ["Disks information", ->() { DisksWindow.instance.present }],
         ["Logs", ->() { LogsWindow.instance.present }],
         ["About", ->() { AboutWindow.instance.present }],