//...
protected override void Subscribe()
{
if (treeView != null)
{
if (TreeViewExtensions.GetMode(treeView) == TreeViewModes.Grid)
{
TreeViewExtensions.GetColumns(treeView)?.ForEach(i => i.VisibilityChanged += OnColumnVisibilityChanged);
}
}
}
protected override ColumnDefinition OnDefinitionCreated(ContentPresenter child, int index)
{
var result = base.OnDefinitionCreated(child, index);
switch (TreeViewExtensions.GetMode(treeView))
{
case TreeViewModes.Default:
result.Width = new(1, GridUnitType.Star);
break;
case TreeViewModes.Grid:
Bind(TreeViewExtensions.GetColumns(treeView)[index], result);
break;
}
return(result);
}
protected override void OnItemsSourceChanged(OldNew <IEnumerable> input)
{
base.OnItemsSourceChanged(input);
if (TreeViewExtensions.GetMode(treeView) == TreeViewModes.Grid)
{
var columns = TreeViewExtensions.GetColumns(treeView);
if (columns?.Count > 0)
{
columns.ForEach(i =>
{
if (!DependencyObjectExtensions.GetIsVisible(i))
{
Hide(i);
}
});
}
}
}
void Load()
{
if (treeView is not null && treeViewItem is not null)
{
treeViewItem.Visibility = Visibility.Collapsed;
ObjectCollection result = new();
switch (TreeViewExtensions.GetMode(treeView))
{
case TreeViewModes.Default:
result.Add(new ContentPresenter()
{
Content
= treeViewItem.Header,
ContentStringFormat
= treeViewItem.HeaderStringFormat,
ContentTemplate
= treeViewItem.HeaderTemplate,
ContentTemplateSelector
= treeViewItem.HeaderTemplateSelector,
});
break;
case TreeViewModes.Grid:
var columns = TreeViewExtensions.GetColumns(treeView);
if (columns?.Count > 0)
{
columns.For(0, columns.Count, (a, b) => result.Add(GetCell(a[b], treeViewItem)));
break;
}
goto case TreeViewModes.Default;
}
ItemsSource = result;
treeViewItem.Visibility = Visibility.Visible;
}
}
