108 lines
2.4 KiB
C#
108 lines
2.4 KiB
C#
// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
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using System;
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using System.Collections.Generic;
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using System.IO;
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using ICSharpCode.AvalonEdit.Document;
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namespace ICSharpCode.AvalonEdit.Indentation.CSharp
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{
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/// <summary>
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/// Interface used for the indentation class to access the document.
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/// </summary>
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public interface IDocumentAccessor
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{
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/// <summary>Gets if the current line is read only (because it is not in the
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/// selected text region)</summary>
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bool IsReadOnly { get; }
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/// <summary>Gets the number of the current line.</summary>
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int LineNumber { get; }
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/// <summary>Gets/Sets the text of the current line.</summary>
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string Text { get; set; }
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/// <summary>Advances to the next line.</summary>
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bool MoveNext();
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}
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#region TextDocumentAccessor
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/// <summary>
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/// Adapter IDocumentAccessor -> TextDocument
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/// </summary>
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public sealed class TextDocumentAccessor : IDocumentAccessor
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{
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readonly TextDocument doc;
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readonly int minLine;
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readonly int maxLine;
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/// <summary>
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/// Creates a new TextDocumentAccessor.
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/// </summary>
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public TextDocumentAccessor(TextDocument document)
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{
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if (document == null)
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throw new ArgumentNullException("document");
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doc = document;
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this.minLine = 1;
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this.maxLine = doc.LineCount;
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}
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/// <summary>
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/// Creates a new TextDocumentAccessor that indents only a part of the document.
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/// </summary>
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public TextDocumentAccessor(TextDocument document, int minLine, int maxLine)
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{
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if (document == null)
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throw new ArgumentNullException("document");
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doc = document;
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this.minLine = minLine;
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this.maxLine = maxLine;
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}
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int num;
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string text;
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DocumentLine line;
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/// <inheritdoc/>
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public bool IsReadOnly {
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get {
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return num < minLine;
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}
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}
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/// <inheritdoc/>
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public int LineNumber {
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get {
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return num;
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}
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}
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bool lineDirty;
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/// <inheritdoc/>
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public string Text {
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get { return text; }
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set {
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if (num < minLine) return;
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text = value;
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lineDirty = true;
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}
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}
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/// <inheritdoc/>
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public bool MoveNext()
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{
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if (lineDirty) {
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doc.Replace(line, text);
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lineDirty = false;
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}
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++num;
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if (num > maxLine) return false;
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line = doc.GetLineByNumber(num);
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text = doc.GetText(line);
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return true;
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}
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}
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#endregion
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}
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