a nice editor in 100 lines

[Abdur-Rahmaan Janhangeer]

great ! maybe the next step is a syntax coloriser ^^_

Abdur-Rahmaan Janhangeer,
Mauritius
abdurrahmaanjanhangeer.wordpress.com

On 31 Dec 2017 02:05, "Wu Xi" <news at luegenpresse.edu> wrote:

> class writerKl(object):
>     def __init__(self):
>             import  tkinter
>             from    tkinter import messagebox
>             from    tkinter import filedialog
>             from    tkinter import Tk
>             from    tkinter import Menu
>             from    tkinter import END
>
>             self.fileName = None
>             self.saved    = True
>             self.app      = tkinter.Tk()
>             self.app.title("FenInst is another instance of the writerKl
> class")
>
>             self.menuBar  = tkinter.Menu(self.app)
>             self.fileMenu = tkinter.Menu(self.menuBar, tearoff=0)
>             self.fileMenu.add_command(label="New",
>  command=self.newFile)
>             self.fileMenu.add_command(label="Open",
> command=self.openFile)
>             self.fileMenu.add_command(label="Save",
> command=self.saveFile)
>             self.fileMenu.add_command(label="Save As",
> command=self.saveFileAs)
>             self.fileMenu.add_separator() ;  self.About = "A selfish
> tkinter text editor in 100 lines of python3 code.\n\n In fact this very
> ''About window'' also was modded using the selfish editor himself.\n\n Open
> the source ''writer.py'' to find out why this editor is seen as so 105x
> self-obsessed."
>             self.fileMenu.add_command(label=     "About", command=lambda:
> tkinter.messagebox.showinfo("About", self.About))
>             self.fileMenu.add_separator()
>             self.fileMenu.add_command(label="Exit", command=self.onExit)
>             self.menuBar.add_cascade( label="File", menu   =self.fileMenu)
>             self.app.config(menu=self.menuBar)
>
>             self.app.bind('<Control-n>', self.newFile )           # key
> Bindings
>             self.app.bind('<Control-o>', self.openFile)
>             self.app.bind('<Control-s>', self.saveFile)
>             self.app.bind('<Key>',       self.setsavedFalse )
>             self.app.protocol("WM_DELETE_WINDOW", self.onExit)    # save
> before exit?
>
>             self.textf  = tkinter.Text(self.app)                  #
> initializing text container
>             self.textf.pack(expand=True, fill='both')             #
> deploying text container
>             self.textf.focus()
>             self.app.mainloop()
>
>     def newFile(self):
>         import  tkinter
>         if not self.saved:
>             save = self.promptToSave()
>             if save:   self.saveFile()
>             elif self.save is None:    return
>         self.fileName = None
>         self.textf.delete(0.0, tkinter.END)
>         self.saved = True
>
>     def openFile(self):
>         import  tkinter
>         if not self.saved:
>             self.save = self.promptToSave()
>             if self.save:
>                 self.saveFile()
>             elif self.save is None:
>                 return
>         try:
>             self.f = tkinter.filedialog.askopenfile( filetypes=[  ('all
> files', '*') , ('py files', '.py')  ] )
>             if self.f:
>                 self.fileName = self.f.name
>                 self.t = self.f.read()
>                 self.textf.delete(0.0, tkinter.END)
>                 self.textf.insert(tkinter.END, self.t)
>                 self.saved = True
>         except:         tkinter.messagebox.showerror("Error", "Unable to
> open file.")
>
>     def saveFile(self):
>         import  tkinter
>         self.t = self.textf.get(0.0, tkinter.END)
>         if  self.fileName:
>             self.f = open(self.fileName, "w")
>             self.f.write(self.t)
>             self.f.close()
>             self.saved = True
>         else:            self.saveFileAs()
>
>     def saveFileAs(self):
>         import  tkinter
>         self.f = tkinter.filedialog.asksaveasfile(defaultextension=".txt",
> filetypes=[ ('all files', '*'),('py files', '.py')  ])
>         self.t = self.textf.get(0.0, tkinter.END)
>         if self.f:
>             try:
>                 self.f.write(self.t)
>                 self.f.close(      )
>                 self.saved = True
>                 self.fileName=self.f.name
>             except: tkinter.messagebox.showwarning("Error", "Unable to
> save file.")
>
>     def onExit(self):
>         import  tkinter
>         if not                self.saved:
>             self.save =       self.promptToSave()
>             if self.save:     self.saveFile()
>             elif self.save is None:    return
>         self.app.destroy()
>
>     def setsavedFalse(self, key):
>         import  tkinter
>         if (key.keysym.isalpha() or key.keysym.isdigit() or key.keysym in
> ["Return", "Tab", "Backspace", "Delete"]):   self.saved = False  # any key
> that changes text
>
>     def promptToSave(self):
>         import  tkinter
>         return tkinter.messagebox.askyesnocancel(     "Save file?", "Do
> you want to save the current file?")
>
>
> if __name__ == '__main__' :
>     import tkinter
>     FenInst  =writerKl()
> --
> https://mail.python.org/mailman/listinfo/python-list
>