using System;

namespace Terminal.Gui {
	/// <summary>
	/// Defines rendering options that affect how the tree is displayed
	/// </summary>
	public class TreeStyle {

		/// <summary>
		/// True to render vertical lines under expanded nodes to show which node belongs to which 
		/// parent.  False to use only whitespace
		/// </summary>
		/// <value></value>
		public bool ShowBranchLines { get; set; } = true;

		/// <summary>
		/// Symbol to use for branch nodes that can be expanded to indicate this to the user.  
		/// Defaults to '+'. Set to null to hide
		/// </summary>
		public Rune? ExpandableSymbol { get; set; } = '+';

		/// <summary>
		/// Symbol to use for branch nodes that can be collapsed (are currently expanded).
		/// Defaults to '-'.  Set to null to hide
		/// </summary>
		public Rune? CollapseableSymbol { get; set; } = '-';

		/// <summary>
		/// Set to true to highlight expand/collapse symbols in hot key color
		/// </summary>
		public bool ColorExpandSymbol { get; set; }

		/// <summary>
		/// Invert console colours used to render the expand symbol
		/// </summary>
		public bool InvertExpandSymbolColors { get; set; }

		/// <summary>
		/// True to leave the last row of the control free for overwritting (e.g. by a scrollbar)
		/// When True scrolling will be triggered on the second last row of the control rather than
		/// the last.
		/// </summary>
		/// <value></value>
		public bool LeaveLastRow { get; set; }

	}
}