46 lines
1.4 KiB
Python
46 lines
1.4 KiB
Python
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import tkinter
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class EntryWithHistory(tkinter.Entry):
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def __init__(self, master, submithook, *args, **kwargs):
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super(EntryWithHistory, self).__init__(master, *args, **kwargs)
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self.previousinputs = []
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self.previousinputstep = 0
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self.submithook = submithook
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self.bind('<Return>', self.submit)
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self.bind('<Escape>', lambda b: self.delete(0, 'end'))
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self.bind('<Up>', self.previous_back)
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self.bind('<Down>', self.previous_forward)
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def submit(self, *b):
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x = self.get()
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x = x.lower()
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noskip = '!' in x
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if 2 < len(x) < 21:
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if len(self.previousinputs) == 0 or self.previousinputs[-1] != x:
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self.previousinputs.append(x)
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self.previousinputstep = 0
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self.submithook(x)
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self.delete(0, 'end')
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def previous_back(self, *b):
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self.previous_step(-1)
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def previous_forward(self, *b):
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self.previous_step(1)
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def previous_step(self, direction):
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self.previousinputstep += direction
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if abs(self.previousinputstep) > len(self.previousinputs):
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self.previousinputstep -= direction
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return
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self.delete(0, 'end')
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if self.previousinputstep >= 0:
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self.previousinputstep = 0
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return
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self.insert(0, self.previousinputs[self.previousinputstep])
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t = tkinter.Tk()
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e=EntryWithHistory(t, print)
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e.pack()
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t.mainloop()
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