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Editing: scrolledtext.py
"""A ScrolledText widget feels like a text widget but also has a vertical scroll bar on its right. (Later, options may be added to add a horizontal bar as well, to make the bars disappear automatically when not needed, to move them to the other side of the window, etc.) Configuration options are passed to the Text widget. A Frame widget is inserted between the master and the text, to hold the Scrollbar widget. Most methods calls are inherited from the Text widget; Pack, Grid and Place methods are redirected to the Frame widget however. """ from tkinter import Frame, Text, Scrollbar, Pack, Grid, Place from tkinter.constants import RIGHT, LEFT, Y, BOTH __all__ = ['ScrolledText'] class ScrolledText(Text): def __init__(self, master=None, **kw): self.frame = Frame(master) self.vbar = Scrollbar(self.frame) self.vbar.pack(side=RIGHT, fill=Y) kw.update({'yscrollcommand': self.vbar.set}) Text.__init__(self, self.frame, **kw) self.pack(side=LEFT, fill=BOTH, expand=True) self.vbar['command'] = self.yview # Copy geometry methods of self.frame without overriding Text # methods -- hack! text_meths = vars(Text).keys() methods = vars(Pack).keys() | vars(Grid).keys() | vars(Place).keys() methods = methods.difference(text_meths) for m in methods: if m[0] != '_' and m != 'config' and m != 'configure': setattr(self, m, getattr(self.frame, m)) def __str__(self): return str(self.frame) def example(): from tkinter.constants import END stext = ScrolledText(bg='white', height=10) stext.insert(END, __doc__) stext.pack(fill=BOTH, side=LEFT, expand=True) stext.focus_set() stext.mainloop() if __name__ == "__main__": example()
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