|
| 1 | +# Show how to do switchable panels. |
| 2 | + |
| 3 | +from Tkinter import * |
| 4 | + |
| 5 | +class App: |
| 6 | + |
| 7 | + def __init__(self, top=None, master=None): |
| 8 | + if top is None: |
| 9 | + if master is None: |
| 10 | + top = Tk() |
| 11 | + else: |
| 12 | + top = Toplevel(master) |
| 13 | + self.top = top |
| 14 | + self.buttonframe = Frame(top) |
| 15 | + self.buttonframe.pack() |
| 16 | + self.panelframe = Frame(top, borderwidth=2, relief=GROOVE) |
| 17 | + self.panelframe.pack(expand=1, fill=BOTH) |
| 18 | + self.panels = {} |
| 19 | + self.curpanel = None |
| 20 | + |
| 21 | + def addpanel(self, name, klass): |
| 22 | + button = Button(self.buttonframe, text=name, |
| 23 | + command=lambda self=self, name=name: self.show(name)) |
| 24 | + button.pack(side=LEFT) |
| 25 | + frame = Frame(self.panelframe) |
| 26 | + instance = klass(frame) |
| 27 | + self.panels[name] = (button, frame, instance) |
| 28 | + if self.curpanel is None: |
| 29 | + self.show(name) |
| 30 | + |
| 31 | + def show(self, name): |
| 32 | + (button, frame, instance) = self.panels[name] |
| 33 | + if self.curpanel: |
| 34 | + self.curpanel.pack_forget() |
| 35 | + self.curpanel = frame |
| 36 | + frame.pack(expand=1, fill="both") |
| 37 | + |
| 38 | +class LabelPanel: |
| 39 | + def __init__(self, frame): |
| 40 | + self.label = Label(frame, text="Hello world") |
| 41 | + self.label.pack() |
| 42 | + |
| 43 | +class ButtonPanel: |
| 44 | + def __init__(self, frame): |
| 45 | + self.button = Button(frame, text="Press me") |
| 46 | + self.button.pack() |
| 47 | + |
| 48 | +def main(): |
| 49 | + app = App() |
| 50 | + app.addpanel("label", LabelPanel) |
| 51 | + app.addpanel("button", ButtonPanel) |
| 52 | + |
| 53 | +if __name__ == '__main__': |
| 54 | + main() |
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