private void CurrentChanging(ItemPreviewModel oldValue)
{
if (oldValue == null)
{
return;
}
oldValue.GeometryInfo.ValueChanged -= CurrentGeoChanged;
}
private void CurrentChanged(ItemPreviewModel newValue)
{
if (newValue != null)
{
newValue.GeometryInfo.ValueChanged += CurrentGeoChanged;
}
if (Mode == SelectionMode.Current)
{
UpdateFromCurrent();
}
}
public void Receive(SearchChangedMessage message)
{
if (message.SearchTags.SequenceEqual(_currentSearchTags))
{
return;
}
_currentSearchTags = message.SearchTags ?? Enumerable.Empty <string>();
var data = _library.GetItemPreviewMetadata(message.SearchTags);
_items.SetSource(data);
_lastToggled = null;
}
public void Receive(SelectionChangedMessage message)
{
var sender = message.Sender;
if (SelectRange)
{
// Block subsequent select handler calls ...
SelectRange = false;
var lastPos = _lastToggled != null ? -1 : 0;
var newPos = -1;
for (var i = 0; i < _items.Count; i++)
{
if (lastPos != -1 && newPos != -1)
{
break;
}
if (_items[i] == sender)
{
newPos = i;
}
if (_items[i] == _lastToggled)
{
lastPos = i;
}
}
if (lastPos != -1)
{
var start = Mathf.Min(lastPos, newPos);
var end = Mathf.Max(lastPos, newPos);
if (lastPos > newPos)
{
end++;
}
using (NotifyMassSelection())
{
for (var i = start; i < end; i++)
{
// ... from here
_items[i].Selected.Value = sender.Selected;
}
}
}
}
_lastToggled = sender;
}
private void CurrentChanged(ItemPreviewModel current)
{
if (Mode != Current)
{
return;
}
if (current == null)
{
Tags.Clear();
return;
}
var filtered = Filter(current.Tags);
Tags.ChangeTo(filtered.Select(text => new TagModel(text, RemoveTag)));
}