139 lines
3.8 KiB
Python
139 lines
3.8 KiB
Python
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# One or more ScrolledLists with HSeparators between them.
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# There is a hierarchical relationship between them:
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# the right list displays the substructure of the selected item
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# in the left list.
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import string
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from Tkinter import *
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from WindowList import ListedToplevel
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from Separator import HSeparator
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from ScrolledList import ScrolledList
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class MultiScrolledLists:
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def __init__(self, root, nlists=2):
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assert nlists >= 1
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self.root = root
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self.nlists = nlists
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self.path = []
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# create top
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self.top = top = ListedToplevel(root)
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top.protocol("WM_DELETE_WINDOW", self.close)
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top.bind("<Escape>", self.close)
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self.settitle()
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# create frames and separators in between
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self.frames = []
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self.separators = []
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last = top
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for i in range(nlists-1):
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sepa = HSeparator(last)
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self.separators.append(sepa)
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frame, last = sepa.parts()
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self.frames.append(frame)
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self.frames.append(last)
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# create labels and lists
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self.labels = []
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self.lists = []
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for i in range(nlists):
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frame = self.frames[i]
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label = Label(frame, text=self.subtitle(i),
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relief="groove", borderwidth=2)
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label.pack(fill="x")
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self.labels.append(label)
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list = ScrolledList(frame, width=self.width(i),
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height=self.height(i))
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self.lists.append(list)
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list.on_select = \
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lambda index, i=i, self=self: self.on_select(index, i)
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list.on_double = \
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lambda index, i=i, self=self: self.on_double(index, i)
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# fill leftmost list (rest get filled on demand)
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self.fill(0)
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# XXX one after_idle isn't enough; two are...
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top.after_idle(self.call_pack_propagate_1)
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def call_pack_propagate_1(self):
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self.top.after_idle(self.call_pack_propagate)
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def call_pack_propagate(self):
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for frame in self.frames:
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frame.pack_propagate(0)
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def close(self, event=None):
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self.top.destroy()
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def settitle(self):
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short = self.shorttitle()
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long = self.longtitle()
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if short and long:
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title = short + " - " + long
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elif short:
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title = short
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elif long:
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title = long
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else:
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title = "Untitled"
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icon = short or long or title
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self.top.wm_title(title)
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self.top.wm_iconname(icon)
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def longtitle(self):
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# override this
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return "Multi Scrolled Lists"
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def shorttitle(self):
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# override this
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return None
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def width(self, i):
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# override this
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return 20
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def height(self, i):
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# override this
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return 10
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def subtitle(self, i):
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# override this
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return "Column %d" % i
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def fill(self, i):
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for k in range(i, self.nlists):
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self.lists[k].clear()
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self.labels[k].configure(text=self.subtitle(k))
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list = self.lists[i]
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l = self.items(i)
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for s in l:
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list.append(s)
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def on_select(self, index, i):
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item = self.lists[i].get(index)
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del self.path[i:]
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self.path.append(item)
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if i+1 < self.nlists:
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self.fill(i+1)
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def items(self, i):
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# override this
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l = []
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for k in range(10):
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s = str(k)
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if i > 0:
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s = self.path[i-1] + "." + s
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l.append(s)
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return l
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def on_double(self, index, i):
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pass
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def main():
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root = Tk()
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quit = Button(root, text="Exit", command=root.destroy)
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quit.pack()
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MultiScrolledLists(root, 4)
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root.mainloop()
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if __name__ == "__main__":
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main()
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