Initial work launcher (self) updater

lib/states/dialogs/launcher_updater_dialog.rb

@@ -0,0 +1,62 @@
+class W3DHub
+  class States
+    class LauncherUpdaterDialog < Dialog
+      BUTTON_STYLE = { text_size: 18, padding_top: 3, padding_bottom: 3, padding_left: 3, padding_right: 3, height: 18 }
+      LIST_ITEM_THEME = Marshal.load(Marshal.dump(THEME))
+      BUTTON_STYLE.each do |key, value|
+        LIST_ITEM_THEME[:Button][key] = value
+      end
+
+      def setup
+        window.show_cursor = true
+
+        theme(THEME)
+
+        background 0xaa_525252
+
+        stack(width: 1.0, max_width: 760, height: 1.0, max_height: 640, v_align: :center, h_align: :center, background: 0xee_222222, border_thickness: 2, border_color: 0xee_222222, padding: 16) do
+          flow(width: 1.0, height: 36, padding: 8) do
+            background 0xff_0052c0
+
+            title @options[:title] || "Launcher Update Available", fill: true, text_align: :center, font: BOLD_FONT
+          end
+
+          stack(width: 1.0, fill: true, margin_top: 14) do
+            subtitle "Release Notes - #{@options[:available_version]}"
+
+            # case launcher_release_type
+            # when :git
+            # when :tebako
+            # end
+
+            pp @options[:release_data]
+            
+            stack(width: 1.0, fill: true, scroll: true, padding: 8, border_thickness: 1, border_color: 0x44_ffffff) do
+              # para @options[:release_data][:body], width: 1.0
+              # FIXME: Finish this bit
+              @options[:release_data][:body].lines.each do |line|
+                line.strip
+              end
+            end
+          end
+
+          flow(width: 1.0, height: 46, margin_top: 16) do
+            background 0xff_ffffff
+
+            button "Cancel", width: 0.25 do
+              pop_state
+              @options[:cancel_callback]&.call
+            end
+
+            flow(fill: true)
+
+            button "Update", width: 0.25 do
+              pop_state
+              @options[:accept_callback]&.call
+            end
+          end
+        end
+      end
+    end
+  end
+end