def insert(self, index, item):
self.native.BeginUpdate()
item._impl = WinForms.ListViewItem([
str(getattr(item, attr)) for attr in self.interface._accessors
])
self.native.Items.Insert(index, item._impl)
self.native.EndUpdate()
def winforms_retrieve_virtual_item(self, sender, e):
# Because ListView is in VirtualMode, it's necessary implement
# VirtualItemsSelectionRangeChanged event to create ListViewItem when it's needed
if self._cache and e.ItemIndex >= self._first_item and \
e.ItemIndex < self._first_item + len(self._cache):
e.Item = self._cache[e.ItemIndex - self._first_item]
else:
e.Item = WinForms.ListViewItem(self.row_data(self.interface.data[e.ItemIndex]))
def update_data(self):
self.native.BeginUpdate()
self.native.Items.Clear()
items = []
for item in self.interface.data:
item._impl = WinForms.ListViewItem(self.row_data(item))
items.append(item._impl)
self.native.Items.AddRange(items)
self.native.EndUpdate()
def winforms_cache_virtual_items(self, sender, e):
if self._cache and e.StartIndex >= self._first_item and \
e.EndIndex <= self._first_item + len(self._cache):
# If the newly requested cache is a subset of the old cache,
# no need to rebuild everything, so do nothing
return
# Now we need to rebuild the cache.
self._first_item = e.StartIndex
new_length = e.EndIndex - e.StartIndex + 1
self._cache = []
# Fill the cache with the appropriate ListViewItems.
for i in range(new_length):
self._cache.append(WinForms.ListViewItem(self.row_data(self.interface.data[i])))
def insert(self, index, item):
item._impl = WinForms.ListViewItem(
[getattr(item, attr) for attr in self.interface._accessors])
self.native.Items.Insert(index, item._impl)
def update_data(self):
self.native.Items.Clear()
for index, row in enumerate(self.interface.data):
row._impl = WinForms.ListViewItem(
[getattr(row, attr) for attr in self.interface._accessors])
self.native.Items.Insert(index, row._impl)
def change_source(self, source):
for index, row in enumerate(self.interface.data):
row._impl = WinForms.ListViewItem(
[getattr(row, attr) for attr in self.interface._accessors])
self.native.Items.Insert(index, row._impl)
def insert(self, index, item):
self.native.BeginUpdate()
item._impl = WinForms.ListViewItem(self.row_data(item))
self.native.Items.Insert(index, item._impl)
self.native.EndUpdate()
