//...
protected virtual void Bind(TreeViewColumn column, ColumnDefinition definition)
{
definition.Bind(ColumnDefinition.MaxWidthProperty,
nameof(TreeViewColumn.MaxWidth), column);
definition.Bind(ColumnDefinition.MinWidthProperty,
nameof(TreeViewColumn.MinWidth), column);
}
public static ColumnDefinition BindWidthColumnDefinition(this ColumnDefinition self,
string path,
BindingMode mode = BindingMode.Default,
IValueConverter converter = null,
object converterParameter = null,
string stringFormat = null,
object source = null,
object targetNullValue = null,
object fallbackValue = null)
=> self.Bind(ColumnDefinition.WidthProperty, path, mode, converter, converterParameter, stringFormat, source, targetNullValue, fallbackValue);
protected override ColumnDefinition GetColumnDefinition(ContentPresenter Child, int Index)
{
var Result = base.GetColumnDefinition(Child, Index);
var TreeViewItem = PART_TreeViewItem ?? this.GetParent <TreeViewItem>();
if (TreeViewItem == null)
{
throw new InvalidOperationException("TreeViewRowHeader must be hosted in a control that inherits TreeViewItem.");
}
var TreeView = PART_TreeView ?? TreeViewItem.GetParent <TreeView>();
try
{
if (TreeView is TreeViewExt && TreeView.As <TreeViewExt>().Columns.Count > 0 && Index < TreeView.As <TreeViewExt>().Columns.Count)
{
var Column = TreeView.As <TreeViewExt>().Columns[Index];
Result = new ColumnDefinition();
var NodeDepth = TreeViewItem.GetDepth();
var a = Index == 0 ? new TreeViewColumnGridLengthConverter(ColumnOffset) : null;
var b = Index == 0 ? new TreeViewColumnDoubleConverter(ColumnOffset) : null;
var c = Index == 0 ? new TreeViewColumnDoubleConverter(ColumnOffset) : null;
var n = Index == 0 ? NodeDepth.ToDouble() as object : null;
Result.Bind(ColumnDefinition.WidthProperty, Column, "Width", a, n, BindingMode.OneWay, UpdateSourceTrigger.PropertyChanged);
Result.Bind(ColumnDefinition.MinWidthProperty, Column, "MinWidth", b, n, BindingMode.TwoWay, UpdateSourceTrigger.PropertyChanged);
Result.Bind(ColumnDefinition.MaxWidthProperty, Column, "MaxWidth", c, n, BindingMode.TwoWay, UpdateSourceTrigger.PropertyChanged);
Child.Bind(ContentPresenter.MarginProperty, Column, "ContentMargin");
}
}
catch
{
Result = null;
}
return(Result);
}
//...
protected override void Bind(TreeViewColumn column, ColumnDefinition definition)
{
base.Bind(column, definition);
definition.Bind(ColumnDefinition.WidthProperty, nameof(TreeViewColumn.Width), column, BindingMode.OneWay);
}
