1 | // Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team |
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2 | // |
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3 | // Permission is hereby granted, free of charge, to any person obtaining a copy of this |
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4 | // software and associated documentation files (the "Software"), to deal in the Software |
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5 | // without restriction, including without limitation the rights to use, copy, modify, merge, |
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6 | // publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons |
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7 | // to whom the Software is furnished to do so, subject to the following conditions: |
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8 | // |
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9 | // The above copyright notice and this permission notice shall be included in all copies or |
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10 | // substantial portions of the Software. |
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11 | // |
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12 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
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13 | // INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
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14 | // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE |
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15 | // FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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16 | // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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17 | // DEALINGS IN THE SOFTWARE. |
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18 | |
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19 | using System; |
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20 | using ICSharpCode.AvalonEdit.Document; |
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21 | using ICSharpCode.NRefactory.Editor; |
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22 | |
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23 | namespace ICSharpCode.AvalonEdit.Snippets |
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24 | { |
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25 | /// <summary> |
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26 | /// Creates a named anchor that can be accessed by other SnippetElements. |
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27 | /// </summary> |
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28 | public sealed class SnippetAnchorElement : SnippetElement |
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29 | { |
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30 | /// <summary> |
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31 | /// Gets or sets the name of the anchor. |
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32 | /// </summary> |
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33 | public string Name { get; private set; } |
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34 | |
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35 | /// <summary> |
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36 | /// Creates a SnippetAnchorElement with the supplied name. |
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37 | /// </summary> |
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38 | public SnippetAnchorElement(string name) |
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39 | { |
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40 | this.Name = name; |
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41 | } |
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42 | |
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43 | /// <inheritdoc /> |
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44 | public override void Insert(InsertionContext context) |
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45 | { |
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46 | TextAnchor start = context.Document.CreateAnchor(context.InsertionPosition); |
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47 | start.MovementType = AnchorMovementType.BeforeInsertion; |
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48 | start.SurviveDeletion = true; |
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49 | AnchorSegment segment = new AnchorSegment(start, start); |
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50 | context.RegisterActiveElement(this, new AnchorElement(segment, Name, context)); |
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51 | } |
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52 | } |
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53 | |
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54 | /// <summary> |
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55 | /// AnchorElement created by SnippetAnchorElement. |
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56 | /// </summary> |
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57 | public sealed class AnchorElement : IActiveElement |
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58 | { |
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59 | /// <inheritdoc /> |
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60 | public bool IsEditable { |
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61 | get { return false; } |
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62 | } |
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63 | |
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64 | AnchorSegment segment; |
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65 | InsertionContext context; |
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66 | |
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67 | /// <inheritdoc /> |
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68 | public ISegment Segment { |
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69 | get { return segment; } |
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70 | } |
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71 | |
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72 | /// <summary> |
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73 | /// Creates a new AnchorElement. |
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74 | /// </summary> |
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75 | public AnchorElement(AnchorSegment segment, string name, InsertionContext context) |
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76 | { |
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77 | this.segment = segment; |
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78 | this.context = context; |
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79 | this.Name = name; |
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80 | } |
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81 | |
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82 | /// <summary> |
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83 | /// Gets or sets the text at the anchor. |
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84 | /// </summary> |
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85 | public string Text { |
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86 | get { return context.Document.GetText(segment); } |
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87 | set { |
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88 | int offset = segment.Offset; |
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89 | int length = segment.Length; |
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90 | context.Document.Replace(offset, length, value); |
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91 | if (length == 0) { |
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92 | // replacing an empty anchor segment with text won't enlarge it, so we have to recreate it |
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93 | segment = new AnchorSegment(context.Document, offset, value.Length); |
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94 | } |
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95 | } |
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96 | } |
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97 | |
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98 | /// <summary> |
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99 | /// Gets or sets the name of the anchor. |
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100 | /// </summary> |
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101 | public string Name { get; private set; } |
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102 | |
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103 | /// <inheritdoc /> |
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104 | public void OnInsertionCompleted() |
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105 | { |
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106 | } |
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107 | |
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108 | /// <inheritdoc /> |
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109 | public void Deactivate(SnippetEventArgs e) |
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110 | { |
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111 | } |
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112 | } |
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113 | } |
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