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Added PositionCursor implementation

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tznind
2020-12-30 18:32:50 +00:00
parent 7d7be9ef48
commit 0222105d7c
1 changed files with 22 additions and 0 deletions
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22
Terminal.Gui/Views/TreeView.cs
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@@ -649,6 +649,28 @@ namespace Terminal.Gui {
return false;
}
/// <summary>
/// Positions the cursor at the start of the selected objects line (if visible)
/// </summary>
public override void PositionCursor()
{
if (CanFocus && HasFocus && Visible && SelectedObject != null)
{
var map = BuildLineMap();
var idx = Array.FindIndex(map,b=>b.Model.Equals(SelectedObject));
// if currently selected line is visible
if(idx - ScrollOffset >= 0 && idx - ScrollOffset < Bounds.Height)
Move(0,idx - ScrollOffset);
else
base.PositionCursor();
} else {
base.PositionCursor();
}
}
/// <summary>
/// Determines systems behaviour when the left arrow key is pressed. Default behaviour is to collapse the current tree node if possible otherwise changes selection to current branches parent
/// </summary>