private protected virtual string GetFocusedStringContent(IFocusStringContentFocus textCellFocus)
{
IFocusStringContentFocusableCellView CellView = textCellFocus.CellView;
Node Node = CellView.StateView.State.Node;
string PropertyName = CellView.PropertyName;
return(NodeTreeHelper.GetString(Node, PropertyName));
}
private protected virtual void ExtendSelectionStringContent(IFocusStringContentSelection selection)
{
IFocusStringContentFocus AsStringContentFocus = Focus as IFocusStringContentFocus;
Debug.Assert(AsStringContentFocus != null);
string Text = GetFocusedStringContent(AsStringContentFocus);
Debug.Assert(selection.Start <= selection.End);
int SelectedCount = selection.End - selection.Start;
Debug.Assert(SelectedCount == Text.Length);
SelectNode(selection.StateView.State);
}
/// <summary>
/// Updates the focus chain with cells in the tree.
/// </summary>
/// <param name="focusChain">The list of focusable cell views found in the tree.</param>
/// <param name="focusedNode">The currently focused node.</param>
/// <param name="focusedFrame">The currently focused frame in the template associated to <paramref name="focusedNode"/>.</param>
/// <param name="matchingFocus">The focus in <paramref name="focusChain"/> that match <paramref name="focusedNode"/> and <paramref name="focusedFrame"/> upon return.</param>
public virtual void UpdateFocusChain(FocusFocusList focusChain, Node focusedNode, IFocusFrame focusedFrame, ref IFocusFocus matchingFocus)
{
IFocusStringContentFocus NewFocus = CreateFocus();
focusChain.Add(NewFocus);
if (focusedFrame == Frame)
{
IFocusOptionalNodeState AsOptionalNodeState = StateView.State as IFocusOptionalNodeState;
Debug.Assert(AsOptionalNodeState == null || AsOptionalNodeState.ParentInner.IsAssigned);
if (focusedNode == StateView.State.Node)
{
Debug.Assert(matchingFocus == null);
matchingFocus = NewFocus;
}
}
}
