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source: branches/3107_LearningALPS/HeuristicLab.ExtLibs/HeuristicLab.AvalonEdit/5.0.1/AvalonEdit-5.0.1/Editing/NoReadOnlySections.cs

Last change on this file was 11700, checked in by jkarder, 10 years ago

#2077: created branch and added first version

File size: 2.3 KB
Line 
1// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
2//
3// Permission is hereby granted, free of charge, to any person obtaining a copy of this
4// software and associated documentation files (the "Software"), to deal in the Software
5// without restriction, including without limitation the rights to use, copy, modify, merge,
6// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
7// to whom the Software is furnished to do so, subject to the following conditions:
8//
9// The above copyright notice and this permission notice shall be included in all copies or
10// substantial portions of the Software.
11//
12// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
13// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
14// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
15// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
16// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
17// DEALINGS IN THE SOFTWARE.
18
19using System;
20using System.Collections.Generic;
21using System.Linq;
22using ICSharpCode.AvalonEdit.Document;
23using ICSharpCode.NRefactory.Editor;
24using ICSharpCode.AvalonEdit.Utils;
25
26namespace ICSharpCode.AvalonEdit.Editing
27{
28  /// <summary>
29  /// <see cref="IReadOnlySectionProvider"/> that has no read-only sections; all text is editable.
30  /// </summary>
31  sealed class NoReadOnlySections : IReadOnlySectionProvider
32  {
33    public static readonly NoReadOnlySections Instance = new NoReadOnlySections();
34   
35    public bool CanInsert(int offset)
36    {
37      return true;
38    }
39   
40    public IEnumerable<ISegment> GetDeletableSegments(ISegment segment)
41    {
42      if (segment == null)
43        throw new ArgumentNullException("segment");
44      // the segment is always deletable
45      return ExtensionMethods.Sequence(segment);
46    }
47  }
48 
49  /// <summary>
50  /// <see cref="IReadOnlySectionProvider"/> that completely disables editing.
51  /// </summary>
52  sealed class ReadOnlySectionDocument : IReadOnlySectionProvider
53  {
54    public static readonly ReadOnlySectionDocument Instance = new ReadOnlySectionDocument();
55   
56    public bool CanInsert(int offset)
57    {
58      return false;
59    }
60   
61    public IEnumerable<ISegment> GetDeletableSegments(ISegment segment)
62    {
63      return Enumerable.Empty<ISegment>();
64    }
65  }
66}
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