using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data; 
using System.Text; 
using System.Windows.Forms;
using ICSharpCode.TextEditor.Document;
using ICSharpCode.TextEditor;

namespace ICSharpCode.WinFormsUI.Controls
{
 public partial class CodeFormatControl : TextBoxBase
 {
 private bool onfoused = false; 

 private Color borderColor = SystemColors.ControlDark;

 public override string Text
 {
 get
 {
 return this.textEditorControl1.Text;
 }
 set
 {
 this.textEditorControl1.Text = value;
 SetHighlightingFoldingStrategy(this.documentType);
 }
 }
 
 public CodeFormatControl()
 {
 InitializeComponent();
 InitializeControls();
 }

 protected void InitializeControls()
 { 
 textEditorControl1.LineViewerStyle = LineViewerStyle.None; 
 textEditorControl1.GotFocus += textEditorControl1_GotFocus;
 textEditorControl1.LostFocus += textEditorControl1_LostFocus;
 textEditorControl1.TextChanged+=textEditorControl1_TextChanged;
 toolStripComboBoxFontValue.SelectedIndex = 0;
 toolStripComboBoxFontSizeValue.SelectedIndex = 1;
 }

 protected void SetHighlightingFoldingStrategy(DocumentType value)
 { 
 switch (value)
 {
 case WinFormsUI.Controls.DocumentType.TSql:
 textEditorControl1.SetHighlighting("TSQL");
 textEditorControl1.Document.FormattingStrategy = new DefaultFormattingStrategy();
 textEditorControl1.Document.FoldingManager.FoldingStrategy = new TsqlFoldingStrategy(); //new IndentFoldingStrategy();
 textEditorControl1.Document.FoldingManager.UpdateFoldings();
 break;
 case WinFormsUI.Controls.DocumentType.Csharp:
 textEditorControl1.SetHighlighting("C#");
 textEditorControl1.Document.FormattingStrategy = new CSharpFormattingStrategy();
 textEditorControl1.Document.FoldingManager.FoldingStrategy = new CSharpFoldingStrategy(); //new IndentFoldingStrategy();
 textEditorControl1.Document.FoldingManager.UpdateFoldings();
 break;
 case WinFormsUI.Controls.DocumentType.Javascript:
 textEditorControl1.SetHighlighting("JavaScript");
 textEditorControl1.Document.FormattingStrategy = new CSharpFormattingStrategy();
 textEditorControl1.Document.FoldingManager.FoldingStrategy = new CSharpFoldingStrategy(); //new IndentFoldingStrategy();
 textEditorControl1.Document.FoldingManager.UpdateFoldings();
 break;
 case WinFormsUI.Controls.DocumentType.Xml:
 textEditorControl1.SetHighlighting("XML");
 textEditorControl1.Document.FormattingStrategy = new DefaultFormattingStrategy();
 textEditorControl1.Document.FoldingManager.FoldingStrategy = new XmlFoldingStrategy(); //new IndentFoldingStrategy();
 textEditorControl1.Document.FoldingManager.UpdateFoldings();
 break;
 case WinFormsUI.Controls.DocumentType.Python:
 textEditorControl1.SetHighlighting("Python");
 textEditorControl1.Document.FormattingStrategy = new DefaultFormattingStrategy();
 textEditorControl1.Document.FoldingManager.FoldingStrategy = new IndentFoldingStrategy(); //new IndentFoldingStrategy();
 textEditorControl1.Document.FoldingManager.UpdateFoldings();
 break;
 }
 }

 protected void textEditorControl1_TextChanged(object sender, EventArgs e)
 {
 if (textEditorControl1.Document != null && textEditorControl1.Document.FoldingManager != null
 && textEditorControl1.Document.FoldingManager.FoldingStrategy != null)
 textEditorControl1.Document.FoldingManager.UpdateFoldings();
 }

 protected void textEditorControl1_GotFocus(object sender, EventArgs e)
 {
 onfoused = true;
 this.Invalidate();
 }

 protected void textEditorControl1_LostFocus(object sender, EventArgs e)
 {
 onfoused = false;
 this.Invalidate();
 }

 protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
 {
 base.OnPaint(e);

 if (onfoused)
 {
 borderColor = Color.Blue;
 }
 else
 {
 borderColor = SystemColors.ControlDark;
 }

 ControlPaint.DrawBorder(e.Graphics, this.ClientRectangle,
 borderColor, 1, ButtonBorderStyle.Solid, //左边
 borderColor, 1, ButtonBorderStyle.Solid, //上边
 borderColor, 1, ButtonBorderStyle.Solid, //右边
 borderColor, 1, ButtonBorderStyle.Solid);//底边

 }

 private void toolStripButtonLineNumber_Click(object sender, EventArgs e)
 {
 textEditorControl1.ShowLineNumbers = !textEditorControl1.ShowLineNumbers;
 }

 private void toolStripButtonAbout_Click(object sender, EventArgs e)
 {
 ShowAbout();
 }

 private void toolStripButtonAddComment_Click(object sender, EventArgs e)
 {
 TextAreaComment(1);
 }

 private void toolStripButtonRemoveComment_Click(object sender, EventArgs e)
 {
 TextAreaComment(-1);
 }

 private void toolStripComboBoxFontSizeValue_SelectedIndexChanged(object sender, EventArgs e)
 {
 var size = toolStripComboBoxFontSizeValue.SelectedItem + "";
 var font = toolStripComboBoxFontValue.SelectedItem + "";

 if (string.IsNullOrEmpty(size))
 {
 size = "12";
 }
 if (string.IsNullOrEmpty(font) || font == "默认")
 {
 font = "Courier New";
 }

 this.textEditorControl1.Font = new Font(font, float.Parse(size), FontStyle.Regular); 
 }

 private void toolStripComboBoxFontValue_SelectedIndexChanged(object sender, EventArgs e)
 {
 var size = toolStripComboBoxFontSizeValue.SelectedItem + "";
 var font = toolStripComboBoxFontValue.SelectedItem + "";

 if (string.IsNullOrEmpty(size))
 {
 size = "12";
 }
 if (string.IsNullOrEmpty(font) || font == "默认")
 {
 font = "Courier New";
 }

 this.textEditorControl1.Font = new Font(font, float.Parse(size), FontStyle.Regular); 
 }

 public override void ReleaseDispose()
 {
 base.ReleaseDispose();
 }

 public void hightStrategyChanged(object sender, EventArgs e)
 {
 string text = ((ToolStripItem)sender).Text;
 foreach (ToolStripMenuItem item in toolStripButtonLanguage.DropDownItems)
 {
 if (item.Text == text)
 {
 item.Checked = true;
 }
 else
 {
 item.Checked = false;
 }
 }

 var _documentType = DocumentType.None;

 switch (text)
 {
 case "Sql":
 _documentType = DocumentType.TSql;
 break;
 case "Javascript":
 _documentType = DocumentType.Javascript;
 break;
 case "Json":
 _documentType = DocumentType.Javascript;
 break;
 case "Python":
 _documentType = DocumentType.Python;
 break;
 case "Html":
 _documentType = DocumentType.Html;
 break;
 case "Css":
 _documentType = DocumentType.Css;
 break; 
 case "C#":
 _documentType = DocumentType.Csharp;
 break;
 }

 SetHighlightingFoldingStrategy(_documentType);

 }

 private void javascriptToolStripMenuItem_Click(object sender, EventArgs e)
 {
 hightStrategyChanged(sender, e);
 }

 private void pythonToolStripMenuItem_Click(object sender, EventArgs e)
 {
 hightStrategyChanged(sender, e);
 }

 private void cToolStripMenuItem_Click(object sender, EventArgs e)
 {
 hightStrategyChanged(sender, e);
 }

 private void cssToolStripMenuItem_Click(object sender, EventArgs e)
 {
 hightStrategyChanged(sender, e);
 }

 private void htmlToolStripMenuItem_Click(object sender, EventArgs e)
 {
 hightStrategyChanged(sender, e);
 }

 private void sqlToolStripMenuItem_Click(object sender, EventArgs e)
 {
 hightStrategyChanged(sender, e);
 } 

 private void jsonToolStripMenuItem_Click(object sender, EventArgs e)
 {
 hightStrategyChanged(sender, e);
 }

 private void toolStripButtonIndent_Click(object sender, EventArgs e)
 {
 var text = this.textEditorControl1.Text;

 TextAreaIndent(1);
 }

 private void toolStripButtonOutdent_Click(object sender, EventArgs e)
 {
 TextAreaIndent(-1);
 }

 private void toolStripButtonClear_Click(object sender, EventArgs e)
 {
 this.textEditorControl1.Text = "";
 textEditorControl1.ActiveTextAreaControl.TextArea.Invalidate();
 this.textEditorControl1.ActiveTextAreaControl.Invalidate();
 } 

 private void TextAreaIndent(int indents)
 {
 int startOffset = -1, endOffset = -1; 
 var offset = textEditorControl1.ActiveTextAreaControl.Caret.Offset; 
 var list = textEditorControl1.ActiveTextAreaControl.SelectionManager.SelectionCollection;

 if (list.Count > 0)
 {
 foreach (var select in list)
 {
 var start = textEditorControl1.Document.GetLineNumberForOffset(select.Offset);
 var end = textEditorControl1.Document.GetLineNumberForOffset(select.EndOffset);
 for (int index = start; index < end + 1; index++)
 {
 var line = textEditorControl1.Document.GetLineSegment(index);

 if (line.Indent + indents >= 0 && line.Indent + indents < 100)
 {
 for (int i = 0; i < Math.Abs(indents); i++)
 {
 if (indents > 0)
 {
 textEditorControl1.Document.Insert(line.Offset, "\t");
 }
 else
 {
 textEditorControl1.Document.Remove(line.Offset, "\t".Length);
 }
 } 
 }

 if (line.Indent + indents >= 0 && line.Indent + indents < 100)
 line.Indent += indents; 

 }
 }

 startOffset = list[0].Offset;

 endOffset = list[list.Count - 1].EndOffset;

 var line3 = textEditorControl1.Document.GetLineSegmentForOffset(list[list.Count - 1].Offset);

 int d = indents;
 if (d <= 0) d += 1;

 textEditorControl1.ActiveTextAreaControl.Caret.Position = textEditorControl1.Document.OffsetToPosition(endOffset + d);

 textEditorControl1.ActiveTextAreaControl
 .SelectionManager.SetSelection(textEditorControl1.Document.OffsetToPosition(startOffset),
 textEditorControl1.Document.OffsetToPosition(endOffset + d)); 
 
 }
 else
 {
 var line2 = textEditorControl1.Document.GetLineSegmentForOffset(textEditorControl1.ActiveTextAreaControl.Caret.Offset);
 if (line2 != null)
 {
 if (line2.Indent + indents >= 0 && line2.Indent + indents < 100)
 {
 if (indents > 0)
 {
 textEditorControl1.Document.Insert(line2.Offset, "\t");
 textEditorControl1.ActiveTextAreaControl.Caret.Position = textEditorControl1.Document.OffsetToPosition(offset + "\t".Length);
 }
 else
 {
 textEditorControl1.Document.Remove(line2.Offset, "\t".Length);
 textEditorControl1.ActiveTextAreaControl.Caret.Position = textEditorControl1.Document.OffsetToPosition(offset - "\t".Length);
 }
 }

 if (line2.Indent + indents >= 0 && line2.Indent + indents < 100)
 line2.Indent += indents;
 }
 }
 
 textEditorControl1.ActiveTextAreaControl.TextArea.Invalidate();
 textEditorControl1.ActiveTextAreaControl.Invalidate();

 }

 private void TextAreaComment(int comments)
 {
 int startOffset = -1, endOffset = -1;
 var offset = textEditorControl1.ActiveTextAreaControl.Caret.Offset;
 var list = textEditorControl1.ActiveTextAreaControl.SelectionManager.SelectionCollection;

 if (list.Count > 0)
 {
 string note = "/**/";
 foreach (var select in list)
 {
 var start = textEditorControl1.Document.GetLineNumberForOffset(select.Offset);
 var end = textEditorControl1.Document.GetLineNumberForOffset(select.EndOffset);

 Caret textCaret = new Caret(textEditorControl1.ActiveTextAreaControl.TextArea);
 textCaret.Position = select.StartPosition;

 ///
 ///Get Not Empty Char Column
 ///
 int startPox = select.StartPosition.Column;
 for (int i = select.StartPosition.Column; i <= select.EndPosition.Column; i++)
 {
 textCaret.Position = new TextLocation(i, start);
 char chr = textEditorControl1.Document.GetCharAt(textCaret.Offset);
 if (chr != ' ')
 {
 startPox = i;
 break;
 }
 } 

 for (int index = start; index < end + 1; index++)
 {
 var line = textEditorControl1.Document.GetLineSegment(index);

 textCaret.Position = new TextLocation(textCaret.Column, line.LineNumber);

 if (line.Comment + comments >= 0 && line.Comment + comments < 100)
 {
 for (int i = 0; i < Math.Abs(comments); i++)
 {
 if (comments > 0)
 {
 textEditorControl1.Document.Insert(textCaret.Offset, "//");
 }
 else
 {
 textEditorControl1.Document.Remove(textCaret.Offset, "//".Length);
 }
 }
 }

 if (line.Comment + comments >= 0 && line.Comment + comments < 100)
 line.Comment += comments;

 }
 }

 startOffset = list[0].Offset;

 endOffset = list[list.Count - 1].EndOffset;

 var line3 = textEditorControl1.Document.GetLineSegmentForOffset(list[list.Count - 1].Offset);

 int d = 2 * comments;
 if (d <= 0) d += 2 * (-comments);

 textEditorControl1.ActiveTextAreaControl.Caret.Position = textEditorControl1.Document.OffsetToPosition(endOffset + d);

 textEditorControl1.ActiveTextAreaControl
 .SelectionManager.SetSelection(textEditorControl1.Document.OffsetToPosition(startOffset),
 textEditorControl1.Document.OffsetToPosition(endOffset + d));

 }
 else
 {
 string note = "//";
 var line2 = textEditorControl1.Document.GetLineSegmentForOffset(textEditorControl1.ActiveTextAreaControl.Caret.Offset);
 if (line2 != null)
 {
 if (line2.Comment + comments >= 0 && line2.Comment + comments < 100)
 {
 if (comments > 0)
 {
 textEditorControl1.Document.Insert(offset, "//");
 textEditorControl1.ActiveTextAreaControl.Caret.Position = textEditorControl1.Document.OffsetToPosition(offset + "//".Length);
 }
 else
 {
 textEditorControl1.Document.Remove(offset - "//".Length, "//".Length);
 textEditorControl1.ActiveTextAreaControl.Caret.Position = textEditorControl1.Document.OffsetToPosition(offset - "//".Length);
 }
 }

 if (line2.Comment + comments >= 0 && line2.Comment + comments < 100)
 line2.Comment += comments;
 }
 }

 textEditorControl1.ActiveTextAreaControl.TextArea.Invalidate();
 textEditorControl1.ActiveTextAreaControl.Invalidate();
 } 

 }
}