C# Document.GetLineIndent方法代码示例

		static void CheckStartPoint (Document doc, InsertionPoint point, bool isEndPoint)
		{
			LineSegment line = doc.GetLine (point.Location.Line);
			if (line == null)
				return;
			if (doc.GetLineIndent (line).Length + 1 == point.Location.Column) {
				int lineNr = point.Location.Line;
				while (lineNr > 1 && doc.GetLineIndent (lineNr - 1).Length == doc.GetLine (lineNr - 1).EditableLength) {
					lineNr--;
				}
				line = doc.GetLine (lineNr);
				point.Location = new DocumentLocation (lineNr, doc.GetLineIndent (line).Length + 1);
			}
			
			if (doc.GetLineIndent (line).Length + 1 < point.Location.Column)
				point.LineBefore = isEndPoint ? NewLineInsertion.Eol : NewLineInsertion.BlankLine;
			if (point.Location.Column < line.EditableLength + 1)
				point.LineAfter = isEndPoint ? NewLineInsertion.Eol : NewLineInsertion.BlankLine;
		}

		static void CheckEndPoint (Document doc, InsertionPoint point, bool isStartPoint)
		{
			LineSegment line = doc.GetLine (point.Location.Line);
			if (line == null)
				return;
			
			if (doc.GetLineIndent (line).Length + 1 < point.Location.Column)
				point.LineBefore = NewLineInsertion.BlankLine;
			if (point.Location.Column < line.EditableLength + 1)
				point.LineAfter = NewLineInsertion.Eol;
		}

		static string GetIndent (string text)
		{
			Mono.TextEditor.Document doc = new Mono.TextEditor.Document ();
			doc.Text = text;
			string result = null;
			for (int i = 1; i < doc.LineCount; i++) {
				string lineIndent = doc.GetLineIndent (i);
				if (doc.GetLine (i).EditableLength == lineIndent.Length)
					continue;
				if (result == null || lineIndent.Length < result.Length)
					result = lineIndent;
			}
			return result ?? "";
		}

		static InsertionPoint GetInsertionPosition (Document doc, int line, int column)
		{
			int bodyEndOffset = doc.LocationToOffset (line, column) + 1;
			
			LineSegment curLine = doc.GetLine (line);
			if (curLine != null) {
				if (bodyEndOffset < curLine.Offset + curLine.EditableLength)
					return new InsertionPoint (new DocumentLocation (line, column + 1), NewLineInsertion.BlankLine, NewLineInsertion.BlankLine);
			}
			
			LineSegment nextLine = doc.GetLine (line + 1);
			
			int endOffset = nextLine != null ? nextLine.Offset : doc.Length;
			for (int i = bodyEndOffset; i < endOffset; i++) {
				char ch = doc.GetCharAt (i);
				if (!char.IsWhiteSpace (ch))
					return new InsertionPoint (doc.OffsetToLocation (i), NewLineInsertion.BlankLine, NewLineInsertion.BlankLine);
			}
			
			if (nextLine == null)
				return new InsertionPoint (doc.OffsetToLocation (bodyEndOffset - 1), NewLineInsertion.BlankLine, NewLineInsertion.BlankLine);
			int oldLine = line;
			while (line < doc.LineCount && doc.GetLineIndent (line + 1).Length == doc.GetLine (line + 1).EditableLength)
				line++;
			NewLineInsertion insertBefore = NewLineInsertion.None;
			NewLineInsertion insertAfter = NewLineInsertion.None;
			int delta = line - oldLine;
			int lineNumber = line + 1;
			
			if (delta == 0) {
				insertBefore = NewLineInsertion.Eol;
				insertAfter = NewLineInsertion.BlankLine;
			} else if (delta == 1) {
				insertAfter = NewLineInsertion.BlankLine;
			} else if (delta == 2) {
				lineNumber--;
				insertAfter = NewLineInsertion.BlankLine;
			} else if (delta >= 3) {
				lineNumber -= 2;
				insertAfter = NewLineInsertion.None;
			}
			
			return new InsertionPoint (new DocumentLocation (lineNumber, doc.GetLineIndent (lineNumber).Length + 1), insertBefore, insertAfter);
		}

		static InsertionPoint GetInsertionPosition (Document doc, int line, int column)
		{
			LineSegment nextLine = doc.GetLine (line + 1);
			int bodyEndOffset = doc.LocationToOffset (line, column) + 1;
			int endOffset = nextLine != null ? nextLine.Offset : doc.Length;
			for (int i = bodyEndOffset; i < endOffset; i++) {
				char ch = doc.GetCharAt (i);
				if (!char.IsWhiteSpace (ch))
					return new InsertionPoint (doc.OffsetToLocation (i), true, true);
			}
			
			if (nextLine == null)
				return new InsertionPoint (doc.OffsetToLocation (bodyEndOffset - 1), true, true);
			int oldLine = line;
			bool curLineEmpty = false;
			if (doc.GetLineIndent (nextLine).Length == nextLine.EditableLength) {
				curLineEmpty = true;
				while (line + 2 < doc.LineCount && doc.GetLineIndent (line + 2).Length == doc.GetLine (line + 2).EditableLength)
					line++;
			}
			bool insertBefore = !curLineEmpty && line - oldLine <= 1;
			bool insertAfter  = line - oldLine == 0;
//			if (curLineEmpty)
//				line++;
			int lineNumber = line + 1;
			return new InsertionPoint (new DocumentLocation (lineNumber, doc.GetLineIndent (lineNumber).Length), insertBefore, insertAfter);
		}

		static void CheckStartPoint (Document doc, InsertionPoint point)
		{
			LineSegment line = doc.GetLine (point.Location.Line);
			if (line == null)
				return;
			if (doc.GetLineIndent (line).Length < point.Location.Column)
				point.ShouldInsertNewLineBefore = true;
			if (point.Location.Column < line.EditableLength)
				point.ShouldInsertNewLineAfter = true;
		}