using System;

 using System.Collections.Generic;

 using System.Text;

 using System.Drawing;

 using System.Windows.Forms;

 using System.Reflection;

 using System.ComponentModel;

 namespace Aga.Controls.Tree.NodeControls

 {

 	public abstract class BaseTextControl : EditableControl

 	{

 		private TextFormatFlags _baseFormatFlags;

         private TextFormatFlags _formatFlags;

         private Pen _focusPen;

 		private StringFormat _format;

 		#region Properties

 		private Font _font = null;

 		public Font Font

 		{

 			get

 			{

 				if (_font == null)

 					return Control.DefaultFont;

 				else

 					return _font;

 			}

 			set

 			{

 				if (value == Control.DefaultFont)

 					_font = null;

 				else

 					_font = value;

 			}

 		}

 		protected bool ShouldSerializeFont()

 		{

 			return (_font != null);

 		}

 		private HorizontalAlignment _textAlign = HorizontalAlignment.Left;

 		[DefaultValue(HorizontalAlignment.Left)]

 		public HorizontalAlignment TextAlign

 		{

 			get { return _textAlign; }

 			set 

 			{ 

 				_textAlign = value;

 				SetFormatFlags();

 			}

 		}

 		private StringTrimming _trimming = StringTrimming.None;

 		[DefaultValue(StringTrimming.None)]

 		public StringTrimming Trimming

 		{

 			get { return _trimming; }

 			set 

 			{ 

 				_trimming = value;

 				SetFormatFlags();

 			}

 		}

 		private bool _displayHiddenContentInToolTip = true;

 		[DefaultValue(true)]

 		public bool DisplayHiddenContentInToolTip

 		{

 			get { return _displayHiddenContentInToolTip; }

 			set { _displayHiddenContentInToolTip = value; }

 		}

 		private bool _useCompatibleTextRendering = false;

 		[DefaultValue(false)]

 		public bool UseCompatibleTextRendering

 		{

 			get { return _useCompatibleTextRendering; }

 			set { _useCompatibleTextRendering = value; }

 		}

 		[DefaultValue(false)]

 		public bool TrimMultiLine

 		{

 			get;

 			set;

 		}

 		#endregion

 		protected BaseTextControl()

 		{

 			IncrementalSearchEnabled = true;

 			_focusPen = new Pen(Color.Black);

 			_focusPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;

 			_format = new StringFormat(StringFormatFlags.LineLimit | StringFormatFlags.NoClip | StringFormatFlags.FitBlackBox | StringFormatFlags.MeasureTrailingSpaces);

 			_baseFormatFlags = TextFormatFlags.PreserveGraphicsClipping |

 						   TextFormatFlags.PreserveGraphicsTranslateTransform;

 			SetFormatFlags();

 			LeftMargin = 3;

 		}

 		private void SetFormatFlags()

 		{

 			_format.Alignment = TextHelper.TranslateAligment(TextAlign);

 			_format.Trimming = Trimming;

 			_formatFlags = _baseFormatFlags | TextHelper.TranslateAligmentToFlag(TextAlign)

 				| TextHelper.TranslateTrimmingToFlag(Trimming);

 		}

 		public override Size MeasureSize(TreeNodeAdv node, DrawContext context)

 		{

 			return GetLabelSize(node, context);

 		}

 		protected Size GetLabelSize(TreeNodeAdv node, DrawContext context)

 		{

 			return GetLabelSize(node, context, GetLabel(node));

 		}

 		protected Size GetLabelSize(TreeNodeAdv node, DrawContext context, string label)

 		{

 			PerformanceAnalyzer.Start("GetLabelSize");

 			CheckThread();

 			Font font = GetDrawingFont(node, context, label);

 			Size s = Size.Empty;

 			if (UseCompatibleTextRendering)

 				s = TextRenderer.MeasureText(label, font);

 			else

 			{

 				SizeF sf = context.Graphics.MeasureString(label, font);

 				s = new Size((int)Math.Ceiling(sf.Width), (int)Math.Ceiling(sf.Height));

 			}

 			PerformanceAnalyzer.Finish("GetLabelSize");

 			if (!s.IsEmpty)

 				return s;

 			else

 				return new Size(10, Font.Height);

 		}

 		protected Font GetDrawingFont(TreeNodeAdv node, DrawContext context, string label)

 		{

 			Font font = context.Font;

 			if (DrawTextMustBeFired(node))

 			{

 				DrawEventArgs args = new DrawEventArgs(node, this, context, label);

 				args.Font = context.Font;

 				OnDrawText(args);

 				font = args.Font;

 			}

 			return font;

 		}

 		protected void SetEditControlProperties(Control control, TreeNodeAdv node)

 		{

 			string label = GetLabel(node);

 			DrawContext context = new DrawContext();

 			context.Font = control.Font;

 			control.Font = GetDrawingFont(node, context, label);

 		}

 		public override void Draw(TreeNodeAdv node, DrawContext context)

 		{

 			if (context.CurrentEditorOwner == this && node == Parent.CurrentNode)

 				return;

 			PerformanceAnalyzer.Start("BaseTextControl.Draw");

 			string label = GetLabel(node);

 			Rectangle bounds = GetBounds(node, context);

 			Rectangle focusRect = new Rectangle(bounds.X, context.Bounds.Y,	

 				bounds.Width, context.Bounds.Height);

 			Brush backgroundBrush;

 			Color textColor;

 			Font font;

 			CreateBrushes(node, context, label, out backgroundBrush, out textColor, out font, ref label);

 			if (backgroundBrush != null)

 				context.Graphics.FillRectangle(backgroundBrush, focusRect);

 			if (context.DrawFocus)

 			{

 				focusRect.Width--;

 				focusRect.Height--;

 				if (context.DrawSelection == DrawSelectionMode.None)

 					_focusPen.Color = SystemColors.ControlText;

 				else

 					_focusPen.Color = SystemColors.InactiveCaption;

 				context.Graphics.DrawRectangle(_focusPen, focusRect);

 			}

 			PerformanceAnalyzer.Start("BaseTextControl.DrawText");

 			if (UseCompatibleTextRendering)

 				TextRenderer.DrawText(context.Graphics, label, font, bounds, textColor, _formatFlags);

 			else

 				context.Graphics.DrawString(label, font, GetFrush(textColor), bounds, _format);

 			PerformanceAnalyzer.Finish("BaseTextControl.DrawText");

 			PerformanceAnalyzer.Finish("BaseTextControl.Draw");

 		}

 		private static Dictionary<Color, Brush> _brushes = new Dictionary<Color,Brush>();

 		private static Brush GetFrush(Color color)

 		{

 			Brush br;

 			if (_brushes.ContainsKey(color))

 				br = _brushes[color];

 			else

 			{

 				br = new SolidBrush(color);

 				_brushes.Add(color, br);

 			}

 			return br;

 		}

 		private void CreateBrushes(TreeNodeAdv node, DrawContext context, string text, out Brush backgroundBrush, out Color textColor, out Font font, ref string label)

 		{

 			textColor = SystemColors.ControlText;

 			backgroundBrush = null;

 			font = context.Font;

 			if (context.DrawSelection == DrawSelectionMode.Active)

 			{

 				textColor = SystemColors.HighlightText;

                 backgroundBrush = SystemBrushes.Highlight;

 			}

 			else if (context.DrawSelection == DrawSelectionMode.Inactive)

 			{

 				textColor = SystemColors.ControlText;

                 backgroundBrush = SystemBrushes.InactiveBorder;

 			}

 			else if (context.DrawSelection == DrawSelectionMode.FullRowSelect)

 				textColor = SystemColors.ControlText;

 			if (!context.Enabled)

 				textColor = SystemColors.GrayText;

 			if (DrawTextMustBeFired(node))

 			{

 				DrawEventArgs args = new DrawEventArgs(node, this, context, text);

 				args.Text = label;

 				args.TextColor = textColor;

 				args.BackgroundBrush = backgroundBrush;

 				args.Font = font;

 				OnDrawText(args);

 				textColor = args.TextColor;

 				backgroundBrush = args.BackgroundBrush;

 				font = args.Font;

 				label = args.Text;

 			}

 		}

 		public string GetLabel(TreeNodeAdv node)

 		{

 			if (node != null && node.Tag != null)

 			{

 				object obj = GetValue(node);

 				if (obj != null)

 					return FormatLabel(obj);

 			}

 			return string.Empty;

 		}

 		protected virtual string FormatLabel(object obj)

 		{

 			var res = obj.ToString();

 			if (TrimMultiLine && res != null)

 			{

 				string[] parts = res.Split('\n');

 				if (parts.Length > 1)

 					return parts[0] + "...";

 			}

 			return res;

 		}

 		public void SetLabel(TreeNodeAdv node, string value)

 		{

 			SetValue(node, value);

 		}

 		protected override void Dispose(bool disposing)

 		{

 			base.Dispose(disposing);

 			if (disposing)

 			{

 				_focusPen.Dispose();

 				_format.Dispose();

 			}

 		}

 		/// <summary>

 		/// Fires when control is going to draw a text. Can be used to change text or back color

 		/// </summary>

 		public event EventHandler<DrawEventArgs> DrawText;

 		protected virtual void OnDrawText(DrawEventArgs args)

 		{

 			TreeViewAdv tree = args.Node.Tree;

 			if (tree != null)

 				tree.FireDrawControl(args);

 			if (DrawText != null)

 				DrawText(this, args);

 		}

 		protected virtual bool DrawTextMustBeFired(TreeNodeAdv node)

 		{

 			return DrawText != null || (node.Tree != null && node.Tree.DrawControlMustBeFired());

 		}

 	}

 }