from guizero import App, TextBox, PushButton, Box, Combo, CheckBox, Slider, MenuBar, Text


def file_function():
    print("File option")

def edit_function():
    print("Edit option")

def open_file():
    with open(file_name.value, "r") as f:
        editor.value = f.read()

def save_file():
    with open(file_name.value, "w") as f:
        f.write(editor.value)
        save_button.disable()

def enable_save():
    save_button.enable()

# A new function that closes the app
def exit_app():
    app.destroy()

# This is where any additional functions needed to run your script go
def change_font():
    editor.font = font.value

def change_text_size():
    editor.text_size = size.value
    editor.resize(1, 1)
    editor.resize("fill", "fill")

def change_text_color():
    editor.text_color = color.value

def change_theme():

    if dark_theme.value:

        app.bg = "black"

        app.text_color = "white"

    else:

        app.bg = None

        app.text_color = None

app = App(title="textzero")

# The new MenuBar
menubar = MenuBar(app,
                  toplevel=["File", "Edit"],
                  options=[
                      [ ["File option 1", file_function], ["File option 2", file_function] ],
                      [ ["Edit option 1", edit_function], ["Edit option 2", edit_function] ]
                  ])

file_controls = Box(app, align="top", width="fill", border=True)
file_name = TextBox(file_controls, text="text_file.txt", width=50, align="left")

save_button = PushButton(file_controls, text="Save", command=save_file, align="right")
open_button = PushButton(file_controls, text="Open", command=open_file, align="right")

editor = TextBox(app, multiline=True, height="fill", width="fill", command=enable_save)

# This is where your additional features go


preferences_controls = Box(app, align="bottom", width="fill", border=True)
font = Combo(preferences_controls, options=["courier", "times new roman", "verdana"], align="left", command=change_font)
size = Slider(preferences_controls,  align="left", start = 8, end = 42, command=change_text_size)
color = Combo(preferences_controls, options=["red", "orange", "navy"],align="left", command=change_text_color)
dark_theme = CheckBox(preferences_controls, text="dark", align="left", command=change_theme)
message = Text(app, text="TextZero Control Panel - Change font, colour, text-size and theme below", size=8, bg ="yellow" )

app.display()