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1 using System;
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2 using BLToolkit.Common;
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3 using BLToolkit.TypeBuilder.Builders;
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4
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5 namespace BLToolkit.TypeBuilder
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6 {
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7 /// <summary>
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8 /// This attribute allows to control generation of PropertyChanged notification at class level
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9 /// </summary>
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10 [AttributeUsage(AttributeTargets.Interface | AttributeTargets.Class)]
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11 public sealed class PropertyChangedAttribute : AbstractTypeBuilderAttribute
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12 {
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13 /// <summary>
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14 /// Specifies default generation options should be used for PropertyChanged notification
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15 /// </summary>
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16 public PropertyChangedAttribute()
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17 :this(Common.Configuration.NotifyOnEqualSet)
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18 {
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19 }
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20
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21 /// <summary>
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22 /// This constructor allows control of PropertyChanged code generation
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23 /// </summary>
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24 /// <param name="notifyOnEqualSet">See <see cref="NotifyOnEqualSet"/></param>
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25 public PropertyChangedAttribute(bool notifyOnEqualSet)
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26 :this(notifyOnEqualSet, true)
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27 {
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28 }
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29
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30 /// <summary>
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31 /// This constructor allows control of PropertyChanged code generation
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32 /// </summary>
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33 /// <param name="notifyOnEqualSet">See <see cref="NotifyOnEqualSet"/></param>
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34 /// <param name="useReferenceEquals">See <see cref="UseReferenceEquals"/></param>
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35 public PropertyChangedAttribute(bool notifyOnEqualSet, bool useReferenceEquals)
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36 :this(notifyOnEqualSet, useReferenceEquals, true)
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37 {
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38 }
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39
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40 /// <summary>
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41 /// This constructor allows control of PropertyChanged code generation
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42 /// </summary>
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43 /// <param name="notifyOnEqualSet">See <see cref="NotifyOnEqualSet"/></param>
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44 /// <param name="useReferenceEquals">See <see cref="UseReferenceEquals"/></param>
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45 /// <param name="skipSetterOnNoChange">See <see cref="SkipSetterOnNoChange"/></param>
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46 public PropertyChangedAttribute(bool notifyOnEqualSet, bool useReferenceEquals, bool skipSetterOnNoChange)
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47 {
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48 _notifyOnEqualSet = notifyOnEqualSet;
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49 _useReferenceEquals = useReferenceEquals;
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50 _skipSetterOnNoChange = skipSetterOnNoChange;
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51 }
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52
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53 private bool _notifyOnEqualSet;
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54 /// <summary>
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55 /// Controls whether OnPropertyChanged notifications are sent when current value is same as new one.
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56 ///
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57 /// Default value controlled via <see cref="Configuration.NotifyOnEqualSet"/> and by default is set to false
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58 /// </summary>
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59 public bool NotifyOnEqualSet
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60 {
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61 get { return _notifyOnEqualSet; }
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62 set { _notifyOnEqualSet = value; }
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63 }
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64
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65 private bool _useReferenceEquals;
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66 /// <summary>
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67 /// Specifies if <see cref="Object.ReferenceEquals">Object.ReferenceEquals</see> should be used for equality comparison of current and new value
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68 /// for reference types. If value type implements op_Inequality, UseReferenceEquals is ignored.
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69 /// </summary>
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70 public bool UseReferenceEquals
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71 {
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72 get { return _useReferenceEquals; }
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73 set { _useReferenceEquals = value; }
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74 }
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75
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76 private bool _skipSetterOnNoChange;
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77 /// <summary>
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78 /// Specifies whether call to setter is made when current value is same as new one
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79 /// </summary>
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80 public bool SkipSetterOnNoChange
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81 {
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82 get { return _skipSetterOnNoChange; }
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83 set { _skipSetterOnNoChange = value; }
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84 }
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85
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86 public override IAbstractTypeBuilder TypeBuilder
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87 {
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88 get { return new PropertyChangedBuilder(_notifyOnEqualSet, _useReferenceEquals, _skipSetterOnNoChange); }
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89 }
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90 }
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91 }
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