On Mon, 29 Nov 2004 09:52:04 -0200 Adriano Monteiro
<[EMAIL PROTECTED]> wrote:
> I got it... ;)
> Now it's working...
>
> I'm interested in thoses functions to navegate on the cobo list. Can
> you post then here?
>
> Thanks!
>
> Regards,
here's my full set of combobox convenience functions. I believe I've
talked about/posted these earlier with some discussion of their
limitations. Basically, this is a hack until gtk does what I want
with combos and makes them really easy to use from the keyboard (though
it may never...)
The major limitation is that the typeahead doesn't work once the widget
is popped up (I can't figure out how to get at events once that menu is
displayed from pygtk).
Tom
def cb_get_active_text (combobox):
"""Get the selected/active text of combobox"""
model = combobox.get_model()
active = combobox.get_active()
if active < 0:
return None
return model[active][0]
def cb_set_active_text (combobox, text, col=0):
"""Set the active text of combobox to text. We fail
if the text is not already in the model. Column is the column
of the model from which text is drawn."""
model = combobox.get_model()
n = 0
for rw in model:
if rw[col]==text:
combobox.set_active(n)
return n
n += 1
return None
class setup_typeahead:
"""We setup selection of ComboBox items when the ComboBox
is selected."""
def __init__ (self, cb, col=0):
self.cb = cb
# we try to connect to our children renderers...
if self.cb.get_children():
for c in cb.get_children():
c.set_direction(gtk.DIR_UP)
try:
c.connect('key_press_event',self.key_press_cb)
except:
print "couldn't connect key_press_event for ",c
self.col = col
self.str = ""
self.cb.connect('key_press_event',self.key_press_cb)
self.typeahead_timeout = 1500
self.last_timeout=None
def key_press_cb (self, widget, event):
newstr = event.string
if not newstr: return
self.str += newstr
match=self.match_string_in_combo(self.str)
if type(match) == type(0):
self.cb.set_active(match)
## otherwise, perhaps they didn't mean to combine strings
else:
self.str = ""
match=self.match_string_in_combo(newstr)
if type(match) == type(0):
self.cb.set_active(match)
self.string = newstr
if type(match)==type(0):
if self.last_timeout: gtk.timeout_remove(self.last_timeout)
self.last_timeout=gtk.timeout_add(self.typeahead_timeout,
self.reset_str)
def reset_str (self, *args):
self.string = ""
def match_string_in_combo (self, str):
mod = self.cb.get_model()
n = 0
for r in mod:
modstr = r[self.col]
if modstr.lower().find(str.lower()) == 0:
return n
n += 1
def setup_completion (cbe, col=0):
"""Setup an EntryCompletion on a ComboBoxEntry based on the
items in the ComboBox's model"""
model = cbe.get_model()
entry = cbe.get_children()[0]
cbe.entry = entry # for convenience/backward compatability
def make_completion (entry, model, col=0):
"""Setup completion for an entry based on model."""
completion = gtk.EntryCompletion()
completion.set_model(model)
completion.set_text_column(col)
entry.set_completion(completion)
def on_activate (*args):
txt = entry.get_text().lower()
completion = False
for r in model:
if r[0].lower().startswith(txt):
if completion:
# if there are more than one
# possible completion, we do nothing
return True
completion = r[0]
if completion != txt:
if completion: entry.set_text(completion)
return True
entry.connect('activate',on_activate)
def set_model_from_list (cb, list):
"""Setup a ComboBox based on a list of strings."""
model = gtk.ListStore(str)
for l in list:
model.append([l])
cb.set_model(model)
if type(cb) == gtk.ComboBoxEntry:
cb.set_text_column(0)
setup_completion(cb)
elif type(cb) == gtk.ComboBox:
cell = gtk.CellRendererText()
cb.pack_start(cell, True)
cb.add_attribute(cell, 'text',0)
setup_typeahead(cb, 0)
if __name__ == '__main__':
w = gtk.Window()
vb = gtk.VBox()
hbox = gtk.HBox()
label = gtk.Label()
label.set_text_with_mnemonic('Enter a _fruit: ')
cbe = gtk.ComboBoxEntry()
label.set_mnemonic_widget(cbe)
set_model_from_list(cbe, ['Apples','Oranges','Grapes','Mango',
'Papaya','Plantain','Kiwi','Cherry',
'Bananas'])
hbox.add(label)
hbox.add(cbe)
label2 = gtk.Label()
label2.set_text_with_mnemonic('Mode of _Transportation')
cb = gtk.ComboBox()
label2.set_mnemonic_widget(cb)
set_model_from_list(cb,
['Planes','Trains','Automobiles','Spacecraft','Bicycles'])
setup_typeahead(cb) hb2 = gtk.HBox()
hb2.add(label2)
hb2.add(cb)
hb2.show_all()
vb.add(gtk.Label("""Here's an EntryCompletion widget automatically
in sync with the ComboBoxEntry widget. Hitting return will select
the first item in the EntryCompletion popup window."""))
vb.add(hbox)
vb.add(gtk.Label("""Here's a ComboBox widget. With the widget
selected, you can type e.g. "a" to select "airplane." Once the
cb-popup window is up, however, typing doesn't do anything
(doh!)""")) vb.add(hb2)
vb.show_all()
w.add(vb)
w.show_all()
w.connect('destroy',lambda *args: gtk.main_quit())
gtk.mainloop()
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