i am developing a ruby module to draw a rack based on parameters. now the user interface is a excel file where user fills some values in cells, then a json is exported and the ruby reads the json and makes the drawing based on that.

i want to change this excel interface by an htmldialog inside sketchup. but it looks quite complex to do. i dont know much about html, css, javascript, etc...

i just to get something similar to the user interface i get already in excel, with some cells to get input and some cells to show some results (for example a simple calculation of the total length of the rack based in the user inputs).

what it is the best way to replicate that in ruby? i should use a visual editor the html + css, do there and the use that code for the ruby?

thanks