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pythontkinterttk

Tkinter Notebook widget

I am trying to create multiple tabs using ttk.Notebook widget. I am creating a simple multi-tab notepad. but I don't know how to deal with the NoteBook widget. but when I click on save button it overrides all tabs text area that because of I declared there self.tx.get("1.0","end-1c").all written file change their text according to last text. Thanks for helping me 


    #-*- coding: utf-8 -*-

    import tkinter.ttk as ttks
    from tkinter import LEFT,RIGHT,X,Y,BOTH
    class MainUI:
        def __init__(self,master):
            self.master = master

            self.nb = ttks.Notebook(self.master)
            self.nb.pack(fill='both',expand=1)

            self.name = ttks.Entry(self.master)
            self.name.pack()
            self.save_tab = ttks.Button(self.master,text="save",command=lambda:self.save_file()).pack()
            #tab1
            self.page1 = ttks.Frame(self.nb)
            self.txt = ttks.tkinter.Text(self.page1)
            self.txt.pack(fill='both',expand=1)
            self.nb.add(self.page1,text="tab1")

            self.page2 = ttks.Frame(self.nb)
            self.nb.add(self.page2,text="tab2")
            self.master.bind('',self.add_tabs)

        def add_tabs(self,event):
            self.page_name = ttks.Frame(self.nb)
            self.tx = ttks.tkinter.Text(self.page_name)
            self.tx.pack(fill=BOTH,expand=1)
            self.nb.add(self.page_name,text="pagename")

        def save_file(self):
            self.fname = self.name.get()
            self.txtinput = self.tx.get("1.0","end-1c")
            with open(self.fname,'w') as f:
                f.write(self.txtinput)

    if __name__ == "__main__":
        root = ttks.tkinter.Tk()
        root.title('Tabs>>')
        root.geometry('500x500')
        MainUI(root)
    root.mainloop()

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after Implementing below code got following Exception enter image description here

Solution

  • In add_tabs, you are replacing the value of self.tx each time that a new tab is added. I.e. you only remember the last created text widget. You need to:

    • store all the text widgets you create (i.e. using a list)
    • have some means to find the text widget in foreground, e.g. by looking at the active tab or the focused widget.

    In __init__, add:

    self.txs = [] # "s" suffix to discern list and elements

    in add_tabs, use:

    tx = ttks.tkinter.Text(self.page_name)
self.txs.append(tx) # append to list
tx.pack(...)

    in save_file, use:

    tab_index = self.nb.index(self.nb.select())
tx = self.txs[tab_index + 1] # may need to adjust depending on how much "static" tabs are in front
txtinput = self.tx.get("1.0", "end-1c")
# ...