from guizero import App, TextBox, PushButton, Box, Combo, MenuBar, info,CheckBox


# function for reading files
def open_file():
    with open(file_name.value, "r") as f:
        editor.value = f.read()

# function for writing files
def save_file():
    with open(file_name.value, "w") as f:
        f.write(editor.value)
        # Disable the save_button
    save_button.hide()

# A new function that closes the app
def exit_app():
    if save_button.enabled == True:
        app.warn("Warning!", "You have not saved the changes")
    else:
        app.destroy()

# function for change size font
def font_button():
    editor.font=font_combo.value

# function for change align DOES NOT WORK
def align_button():
    editor.align=align_combo.value

# function for change color
def color_button():
    editor.text_color=color_combo.value
    #if color_combo.value=="red":
        #size_combo.disable()
    #else:
        #size_combo.enable()

# function for change font
def size_button():
    editor.text_size=size_combo.value
    editor.resize(1, 1)
    editor.resize("fill", "fill")

def enable_save():
    save_button.show()

def dark_mode():
    if dark_button.value == True:
        editor.bg = "black"
        editor.text_color = "white"
        dark_button.value = False
    else:
        editor.bg = "white"
        editor.text_color = "black"
        dark_button.value = True


app = App(title="texteditor")


# The new MenuBar
menubar = MenuBar(app,
                  toplevel=["File","Edit"],
                  options=[
                    [["open",open_file],["save",save_file],["exit",exit_app]],
                    [["Font",font_button],["Size",size_button],["Align",align_button],["Color",color_button], ]
                    ])


# create a box to house the controls, we want the box to span the entire width of the app
file_controls = Box(app, align="top", width="fill", border=True)
format_controls=Box(app, align="top", width="fill")

# create a TextBox for the file name
file_name = TextBox(file_controls, text="text_file.txt", width=50, align="left")

# create a save button which uses the save_file function
save_button = PushButton(file_controls, text="Save", command=save_file, align="right")

# create an open button which uses the open_file function
open_button = PushButton(file_controls, text="Open", command=open_file,  align="right")

# create an open button which uses the open_file function
dark_button = CheckBox(format_controls, text="Dark", align="right", command=dark_mode)


# create an open button which uses the open_file function
color_combo = Combo(format_controls, options=["red","green","blue","cyan","black"], selected="black", align="right", command=color_button)

# create an open button which uses the open_file function
font_combo = Combo(format_controls, options=["Arial", "Helevetica","Courier"], selected="Courier", align="right", command=font_button)

# create an open button which uses the open_file function
size_combo = Combo(format_controls, options=[6,8,10,12,14,16,18,20], selected="10", align="right", command=size_button)

# create an open button which uses the open_file function
align_combo = Combo(format_controls, options=["left","right","top","bottom"], width=40,selected="left", align="right", command=align_button)



# create a TextBox which is not in the box and fills the rest of the GUI
editor = TextBox(app, multiline=True, height="fill", width="fill", command=enable_save)

app.display()