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55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
# Show how to do switchable panels.
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from tkinter import *
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class App:
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def __init__(self, top=None, master=None):
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if top is None:
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if master is None:
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top = Tk()
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else:
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top = Toplevel(master)
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self.top = top
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self.buttonframe = Frame(top)
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self.buttonframe.pack()
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self.panelframe = Frame(top, borderwidth=2, relief=GROOVE)
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self.panelframe.pack(expand=1, fill=BOTH)
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self.panels = {}
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self.curpanel = None
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def addpanel(self, name, klass):
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button = Button(self.buttonframe, text=name,
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command=lambda self=self, name=name: self.show(name))
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button.pack(side=LEFT)
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frame = Frame(self.panelframe)
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instance = klass(frame)
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self.panels[name] = (button, frame, instance)
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if self.curpanel is None:
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self.show(name)
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def show(self, name):
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(button, frame, instance) = self.panels[name]
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if self.curpanel:
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self.curpanel.pack_forget()
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self.curpanel = frame
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frame.pack(expand=1, fill="both")
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class LabelPanel:
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def __init__(self, frame):
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self.label = Label(frame, text="Hello world")
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self.label.pack()
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class ButtonPanel:
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def __init__(self, frame):
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self.button = Button(frame, text="Press me")
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self.button.pack()
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def main():
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app = App()
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app.addpanel("label", LabelPanel)
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app.addpanel("button", ButtonPanel)
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app.top.mainloop()
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if __name__ == '__main__':
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main()
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