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