51 lines
1.4 KiB
C#
51 lines
1.4 KiB
C#
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// 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.Linq;
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using System.Collections.Generic;
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using ICSharpCode.AvalonEdit.Document;
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using ICSharpCode.AvalonEdit.Utils;
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namespace ICSharpCode.AvalonEdit.Editing
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{
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/// <summary>
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/// <see cref="IReadOnlySectionProvider"/> that has no read-only sections; all text is editable.
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/// </summary>
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sealed class NoReadOnlySections : IReadOnlySectionProvider
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{
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public static readonly NoReadOnlySections Instance = new NoReadOnlySections();
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public bool CanInsert(int offset)
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{
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return true;
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}
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public IEnumerable<ISegment> GetDeletableSegments(ISegment segment)
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{
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if (segment == null)
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throw new ArgumentNullException("segment");
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// the segment is always deletable
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return ExtensionMethods.Sequence(segment);
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}
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}
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/// <summary>
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/// <see cref="IReadOnlySectionProvider"/> that completely disables editing.
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/// </summary>
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sealed class ReadOnlyDocument : IReadOnlySectionProvider
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{
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public static readonly ReadOnlyDocument Instance = new ReadOnlyDocument();
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public bool CanInsert(int offset)
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{
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return false;
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}
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public IEnumerable<ISegment> GetDeletableSegments(ISegment segment)
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{
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return Enumerable.Empty<ISegment>();
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}
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}
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}
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