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from gi.repository import Gio, GObject
class Person(GObject.Object):
__gtype_name__ = "Person"
name = GObject.Property(type=str)
def __init__(self, name):
super().__init__()
self.name = name
class PersonsModel(GObject.GObject, Gio.ListModel):
__gtype_name__ = "PersonsModel"
def __init__(self):
super().__init__()
# Private list to store the persons
self._persons = []
"""
Interface Methods
"""
def do_get_item(self, position):
return self._persons[position]
def do_get_item_type(self):
return Person
def do_get_n_items(self):
return len(self._persons)
"""
Our Helper Methods
"""
def add(self, person):
self._persons.append(person)
"""
We must call Gio.ListModel.items_changed() every time we change the list.
It's a helper to emit the "items-changed" signal, so consumer can know
that the list changed at some point. We pass the position of the change,
the number of removed items and the number of added items.
"""
self.items_changed(len(self._persons) - 1, 0, 1)
def remove(self, position):
del self._persons[position]
self.items_changed(position, 1, 0)
def get_index_by_name(self, name):
for i, person in enumerate(self._persons):
if person.name == name:
return i
return None
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