// In PageManager we track selection by keeping track of the package unique ids (hence it's not affected by reordering)
// In ListView, the selection is tracked by indices. As a result, when we update the itemsSource, we want to sync selection index if needed
// Because there might be some sort of reordering
private void SyncPageManagerSelectionToListView(PageSelection selection = null)
{
var visualStates = itemsSource as List <VisualState>;
if (visualStates == null)
{
return;
}
var page = m_PageManager.GetCurrentPage();
if (page.tab != PackageFilterTab.AssetStore)
{
return;
}
selection ??= page.GetSelection();
var oldSelectedVisualStates = selectedItems.Select(item => item as VisualState).ToArray();
if (oldSelectedVisualStates.Length == selection.Count && oldSelectedVisualStates.All(v => selection.Contains(v.packageUniqueId)))
{
return;
}
var newSelectionIndices = new List <int>();
for (var i = 0; i < visualStates.Count; i++)
{
if (selection.Contains(visualStates[i].packageUniqueId))
{
newSelectionIndices.Add(i);
}
}
SetSelection(newSelectionIndices);
}
private void OnSelectionChanged(PageSelection selection)
{
var currentView = this.currentView;
foreach (var item in selection.previousSelections.Where(s => !selection.Contains(s.packageUniqueId)).Concat(selection))
{
currentView.GetPackageItem(item.packageUniqueId)?.RefreshSelection();
}
}
