def __init__(self, master, pdb):
self.pdb = pdb
headings = tuple(pdb.fields)
Tree.__init__(self, master, columns = headings, show = "headings", displaycolumns = headings)
for i in range(len(headings)):
self.heading("#%d" % (i+1), text = headings[i], command = lambda arg = headings[i]: self.fill(arg))
self.menu = Menu(self, tearoff = False)
self.menu.add("command", compound = "left", ulabel = "_Add record", command = self.add, accelerator = "Insert")
self.menu.add("command", compound = "left", ulabel = "E_dit record", command = self.edit, accelerator = "Alt-Insert")
self.menu.add("command", compound = "left", ulabel = "_Delete record", command = self.delete, accelerator = "Delete")
self.bind("<Button-3>", self.pop_menu)
self.bind("<Key-App>", self.pop_menu)
self.bind("<Key-Insert>", self.add)
self.bind("<Key-Delete>", self.delete)
self.bind("<Alt-Insert>", self.edit)
self.editor = Frame(self, padding = 0, relief = "flat")
self.editor.rowconfigure(0, weight = 1)
i = 0
for name in self._columns():
w = TreeEntry(self.editor, name = name, padding = (3, 0), width = -1)
w.grid(row = 0, column = i, sticky = "nesw")
i += 1
for widget in self.editor.children.values():
widget.bind("<KeyPress-Return>", lambda event: self._hide_editor(True), add = "+")
widget.bind("<KeyPress-Escape>", lambda event: self._hide_editor(), add = "+")
self.fill(headings[0])
self.autosize()
def _hide_editor(self, save = False):
self.unbind("<<TreeviewSelect>>")
self.focus_displayof().update()
item = getattr(self, "ITEM")
if save:
result = dict((name, widget.get()) for (name, widget) in self.editor.children.items())
record = self._2pdb(item)
if record:
self.pdb.update(record, **result)
self.item(item, values = self._2tree(result))
else:
id_ = self.pdb.insert(**result)
self.pdb.update(self.pdb[id_])
self.item(item, tags = id_, values = self._2tree(result))
self.pdb.commit()
if self.item(item, "tags") == "": Tree.delete(self, item)
for widget in tuple(w for w in self.editor.children.values()): widget.clear()
self.editor.place_forget()
self.focus()
delattr(self, "ITEM")
delattr(self, "BBOX")
self.unbind("<Configure>", getattr(self, "CNFEDIT"))
delattr(self, "CNFEDIT")
def xview(self, *args):
Tree.xview(self, *args)
if self.editor.place_info() != {}:
if args[0] == "scroll":
self.update()
self._adjust_editor()
else:
w = getattr(self, "BBOX")[2]
x = max(0, float(args[-1])*w)
dif = abs(w - self.winfo_width())
self.editor.place_configure(x = -(x if x <= dif else dif))
def yview(self, *args):
if self.editor.place_info() == {}:
Tree.yview(self, *args)
def delete(self, event = None): selection = self.selection() self.pdb.delete(self._2pdb(item) for item in selection) self.pdb.commit() Tree.delete(self, *selection)
