edit.cs

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	}
	public class InvertCaseAction : ISdPlugin
	{
		public ISdMessageHandler MessageHandler {
			get {
				return null;
			}
		}
		void Convert(TextAreaControl textarea, Point from, Point to)
		{
			StringBuilder what = new StringBuilder(textarea.Buffer.Delete(from, to));
			for (int i = 0; i < what.Length; ++i) {
				if (Char.IsUpper(what[i]))
					what[i] = Char.ToLower(what[i]);
				else
					what[i] = Char.ToUpper(what[i]);
			}
			textarea.Buffer.Insert(from, what.ToString());
			textarea.UndoStack.UndoLast(2);
			textarea.UpdateLines(from.Y, to.Y);
		}
		
		public void Execute(ISdPluginExecutor executor)
		{
			ContentWindow window = executor.Main.ActiveContentWindow;
			if (window != null && window.HasTextArea) {
				TextAreaControl textarea = window.TextArea;
				textarea.Buffer.BeginUpdate();
				
				if (textarea.Selection.HasSomethingSelected) {
					Convert(textarea, textarea.Selection.RealStart, textarea.Selection.RealEnd);
				} else
					if (textarea.Caret.CaretPos.X < textarea.Buffer[textarea.Caret.CaretPos.Y].Text.Length) // cursor at line end ?
						Convert(textarea, textarea.Caret.CaretPos, new Point(textarea.Caret.CaretPos.X + 1, textarea.Caret.CaretPos.Y));
				textarea.Buffer.EndUpdate();
				
			}
		}
	}
	
	public class CapitalizeAction : ISdPlugin
	{
		public ISdMessageHandler MessageHandler {
			get {
				return null;
			}
		}
		void Convert(TextAreaControl textarea, Point from, Point to)
		{
			StringBuilder what = new StringBuilder(textarea.Buffer.Delete(from, to).ToLower());
			for (int i = 0; i < what.Length; ++i) {
				if (!Char.IsLetter(what[i]) && i < what.Length - 1)
					what[i + 1] = Char.ToUpper(what[i + 1]);
			}
			textarea.Buffer.Insert(from, what.ToString());
			textarea.UndoStack.UndoLast(2);
			textarea.UpdateLines(from.Y, to.Y);
		}
		
		public void Execute(ISdPluginExecutor executor)
		{
			ContentWindow window = executor.Main.ActiveContentWindow;
			if (window != null && window.HasTextArea) {
				TextAreaControl textarea = window.TextArea;
				
				textarea.Buffer.BeginUpdate();
				if (textarea.Selection.HasSomethingSelected) {
					Convert(textarea, textarea.Selection.RealStart, textarea.Selection.RealEnd);
				} else
					if (textarea.Caret.CaretPos.X < textarea.Buffer[textarea.Caret.CaretPos.Y].Text.Length) // cursor at line end ?
						Convert(textarea, textarea.Caret.CaretPos, new Point(textarea.Caret.CaretPos.X + 1, textarea.Caret.CaretPos.Y));
				textarea.Buffer.EndUpdate();
			}
		}
	}
	
	public class ConvertTabsToSpaces : ISdPlugin
	{
		public ISdMessageHandler MessageHandler {
			get {
				return null;
			}
		}
		void Convert(TextAreaControl textarea, int y1, int y2) 
		{
			int           redocounter = 0; // must count how many Delete operations occur
			Point         p1 = new Point();
			Point         p2 = new Point();
			
			string spaces = "";
			for (int i = 0; i < textarea.Buffer.Options.TabIndent; ++i)
				spaces += ' ';
			
			for (int i = y1; i < y2; ++i) {
				p1.Y = p2.Y = i;
				for (int j = 0; j < textarea.Buffer[i].Text.Length; ++j) {
					if (textarea.Buffer[i].Text[j] == '\t') {
						p1.X = j;
						p2.X = j + 1;
						textarea.Buffer.Delete(p1, p2);
						textarea.Buffer.Insert(p1, spaces);
						redocounter += 2;
						j += textarea.Buffer.Options.TabIndent - 1; // skip inserted characters
					}
				}
			}
			textarea.Caret.CheckCaretPos();                  // current cursor position may be invalid
			textarea.Buffer.UndoStack.UndoLast(redocounter); // redo the whole operation (not the single deletes)
			textarea.UpdateLines(y1, y2);
		}
		
		public void Execute(ISdPluginExecutor executor)
		{
			if (executor.Main.ActiveContentWindow == null || !executor.Main.ActiveContentWindow.HasTextArea)
				return;
			
			TextAreaControl textarea = executor.Main.ActiveContentWindow.TextArea;
			textarea.Buffer.BeginUpdate();
			if (textarea.Selection.HasSomethingSelected) {
				int y = textarea.Selection.RealEnd.Y + 1;
				if (textarea.Selection.RealEnd.X == 0)
					--y;
				Convert(textarea, textarea.Selection.RealStart.Y, y);
			} else
				Convert(textarea, 0, textarea.Buffer.Length);
			textarea.Buffer.EndUpdate();
		}
	}
	
	public class ConvertSpacesToTabs : ISdPlugin
	{
		public ISdMessageHandler MessageHandler {
			get {
				return null;
			}
		}
		void Convert(TextAreaControl textarea, int y1, int y2) 
		{
			int   redocounter = 0; // must count how many Delete operations occur
			Point p1 = new Point();
			Point p2 = new Point();
			
			int indent = textarea.Buffer.Options.TabIndent;

			for (int i = y1; i < y2; ++i) {
				p1.Y = p2.Y = i;
				int spacecounter = 0;
				for (int j = 0; j < textarea.Buffer[i].Text.Length; ++j) {
					if (textarea.Buffer[i].Text[j] == ' ')
						++spacecounter;
					else
						spacecounter = 0;
					if (spacecounter >= indent) {
						p1.X = 1 + j - spacecounter;
						p2.X = j + 1;
						textarea.Buffer.Delete(p1, p2);
						textarea.Buffer.Insert(p1, "\t");
						redocounter+=2;
						spacecounter = 0;
						j -= indent - 1;
					}							
				}
			}
			textarea.Caret.CheckCaretPos();                  // current cursor position may be invalid
			textarea.Buffer.UndoStack.UndoLast(redocounter); // redo the whole operation (not the single deletes)
			textarea.UpdateLines(y1, y2);
		}
		
		public void Execute(ISdPluginExecutor executor)
		{
			if (executor.Main.ActiveContentWindow == null || !executor.Main.ActiveContentWindow.HasTextArea)
				return;
			
			TextAreaControl textarea = executor.Main.ActiveContentWindow.TextArea;
			textarea.Buffer.BeginUpdate();
			if (textarea.Selection.HasSomethingSelected) {
				int y = textarea.Selection.RealEnd.Y + 1;
				if (textarea.Selection.RealEnd.X == 0)
					--y;
				Convert(textarea, textarea.Selection.RealStart.Y, y);
			} else
				Convert(textarea, 0, textarea.Buffer.Length);
			textarea.Buffer.EndUpdate();
		}
	}
	
	public class ConvertLeadingTabsToSpaces : ISdPlugin
	{
		public ISdMessageHandler MessageHandler {
			get {
				return null;
			}
		}
		void Convert(TextAreaControl textarea, int y1, int y2) 
		{
			int           redocounter = 0; // must count how many Delete operations occur
			Point         p1 = new Point();
			Point         p2 = new Point();
			
			string spaces = "";
			for (int i = 0; i < textarea.Buffer.Options.TabIndent; ++i)
				spaces += ' ';
			
			for (int i = y1; i < y2; ++i) {
				p1.Y = p2.Y = i;
				for (int j = 0; j < textarea.Buffer[i].Text.Length; ++j) {
					if (textarea.Buffer[i].Text[j] == '\t') {
						p1.X = j;
						p2.X = j + 1;
						textarea.Buffer.Delete(p1, p2);
						textarea.Buffer.Insert(p1, spaces);
						redocounter += 2;
						j += textarea.Buffer.Options.TabIndent - 1; // skip inserted characters
					} else
						break;
				}
			}
			textarea.Caret.CheckCaretPos();                  // current cursor position may be invalid
			if (redocounter > 0)
				textarea.Buffer.UndoStack.UndoLast(redocounter); // redo the whole operation (not the single deletes)
			textarea.UpdateLines(y1, y2);
		}
		
		public void Execute(ISdPluginExecutor executor)
		{
			if (executor.Main.ActiveContentWindow == null || !executor.Main.ActiveContentWindow.HasTextArea)
				return;
			
			TextAreaControl textarea = executor.Main.ActiveContentWindow.TextArea;
			textarea.Buffer.BeginUpdate();
			if (textarea.Selection.HasSomethingSelected) {
				int y = textarea.Selection.RealEnd.Y + 1;
				if (textarea.Selection.RealEnd.X == 0)
					--y;
				Convert(textarea, textarea.Selection.RealStart.Y, y);
			} else
				Convert(textarea, 0, textarea.Buffer.Length);
			textarea.Buffer.EndUpdate();
		}
	}
	
	public class ConvertLeadingSpacesToTabs : ISdPlugin
	{
		public ISdMessageHandler MessageHandler {
			get {
				return null;
			}
		}
		void Convert(TextAreaControl textarea, int y1, int y2) 
		{
			int   redocounter = 0; // must count how many Delete operations occur
			Point p1 = new Point();
			Point p2 = new Point();
			
			int indent = textarea.Buffer.Options.TabIndent;

			for (int i = y1; i < y2; ++i) {
				p1.Y = p2.Y = i;
				int spacecounter = 0;
				for (int j = 0; j < textarea.Buffer[i].Text.Length; ++j) {
					if (textarea.Buffer[i].Text[j] == ' ')
						++spacecounter;
					else
						break;
					if (spacecounter >= indent) {
						p1.X = 1 + j - spacecounter;
						p2.X = j + 1;
						textarea.Buffer.Delete(p1, p2);
						textarea.Buffer.Insert(p1, "\t");
						redocounter+=2;
						spacecounter = 0;
						j -= indent - 1;
					}							
				}
			}
			textarea.Caret.CheckCaretPos();                  // current cursor position may be invalid
			if (redocounter > 0)
				textarea.Buffer.UndoStack.UndoLast(redocounter); // redo the whole operation (not the single deletes)
			textarea.UpdateLines(y1, y2);
		}
		
		public void Execute(ISdPluginExecutor executor)
		{
			if (executor.Main.ActiveContentWindow == null || !executor.Main.ActiveContentWindow.HasTextArea)
				return;
			
			TextAreaControl textarea = executor.Main.ActiveContentWindow.TextArea;
			textarea.Buffer.BeginUpdate();
			if (textarea.Selection.HasSomethingSelected) {
				int y = textarea.Selection.RealEnd.Y + 1;
				if (textarea.Selection.RealEnd.X == 0)
					--y;
				Convert(textarea, textarea.Selection.RealStart.Y, y);
			} else
				Convert(textarea, 0, textarea.Buffer.Length);
			textarea.Buffer.EndUpdate();
		}
	}
	
	/// <summary>
	/// This is a sample editaction plugin, it indents the selected area.
	/// </summary>
	public class IndentSelection : ISdPlugin
	{
		public ISdMessageHandler MessageHandler {
			get {
				return null;
			}
		}
		public void Execute(ISdPluginExecutor executor)
		{
			if (executor.Main.ActiveContentWindow == null || !executor.Main.ActiveContentWindow.HasTextArea)
				return;
			
			TextAreaControl textarea = executor.Main.ActiveContentWindow.TextArea;
			if (textarea.Buffer.ReadOnly) 
				return;
			if (textarea.Selection.HasSomethingSelected) {
				int y1 = textarea.Selection.RealStart.Y;
				int y2 = textarea.Selection.RealEnd.Y;
				Indent.IndentLines(textarea.Buffer, y1, y2, textarea.Options.IndentStyle);
			} else {
				Indent.IndentLines(textarea.Buffer, 0, textarea.Buffer.Length - 1, textarea.Options.IndentStyle);
				
			}
			textarea.Refresh();
		}
	}
}