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Ignore:
Timestamp:
03/04/10 04:52:28 (14 years ago)
Author:
swagner
Message:

Operator architecture refactoring (#95)

  • implemented reviewers' comments on version r2917.
File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/sources/HeuristicLab.Parameters/3.3/ConstrainedValueParameter.cs

    r2852 r2924  
    2121
    2222using System;
    23 using HeuristicLab.Common;
     23using System.Linq;
     24using HeuristicLab.Collections;
    2425using HeuristicLab.Core;
    2526using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
    … …  
    2728namespace HeuristicLab.Parameters {
    2829  /// <summary>
    29   /// A parameter whose value has to be chosen from a set of valid values which is defined it the parameter itself.
     30  /// A parameter whose value has to be chosen from a set of valid values.
    3031  /// </summary>
    31   [Item("ConstrainedValueParameter<T>", "A parameter whose value has to be chosen from a set of valid values which is defined it the parameter itself.")]
    32   public sealed class ConstrainedValueParameter<T> : Parameter, IValueParameter<T> where T : class, IItem {
    33     private ItemSet<T> validValues;
    34     [Storable]
    35     public ItemSet<T> ValidValues {
    36       get { return validValues; }
    37       private set {
    38         DeregisterValidValuesEvents();
    39         validValues = value;
    40         RegisterValidValuesEvents();
     32  [Item("ConstrainedValueParameter<T>", "A parameter whose value has to be chosen from a set of valid values.")]
     33  [EmptyStorableClass]
     34  public class ConstrainedValueParameter<T> : OptionalConstrainedValueParameter<T> where T : class, IItem {
     35    public override T Value {
     36      get { return base.Value; }
     37      set {
     38        if ((value == null) && (ValidValues.Count > 0)) throw new ArgumentNullException();
     39        base.Value = value;
    4140      }
    4241    }
    4342
    44     private T value;
    45     [Storable]
    46     public T Value {
    47       get { return this.value; }
    48       set {
    49         if (value != this.value) {
    50           if ((value != null) && !validValues.Contains(value)) throw new ArgumentException("Invalid value.");
    51           this.value = value;
    52           OnValueChanged();
    53         }
    54       }
     43    public ConstrainedValueParameter() : base() { }
     44    public ConstrainedValueParameter(string name) : base(name) { }
     45    public ConstrainedValueParameter(string name, ItemSet<T> validValues) : base(name, validValues) { }
     46    public ConstrainedValueParameter(string name, ItemSet<T> validValues, T value) : base(name, validValues, value) { }
     47    public ConstrainedValueParameter(string name, string description) : base(name, description) { }
     48    public ConstrainedValueParameter(string name, string description, ItemSet<T> validValues) : base(name, description, validValues) { }
     49    public ConstrainedValueParameter(string name, string description, ItemSet<T> validValues, T value) : base(name, description, validValues, value) { }
     50
     51    protected override void validValues_ItemsAdded(object sender, CollectionItemsChangedEventArgs<T> e) {
     52      if (Value == null) Value = ValidValues.First();
    5553    }
    56     IItem IValueParameter.Value {
    57       get { return Value; }
    58       set {
    59         T val = value as T;
    60         if ((value != null) && (val == null))
    61           throw new InvalidOperationException(
    62             string.Format("Type mismatch. Value is not a \"{0}\".",
    63                           typeof(T).GetPrettyName())
    64           );
    65         Value = val;
    66       }
     54    protected override void ValidValues_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<T> e) {
     55      if ((Value != null) && !ValidValues.Contains(Value)) Value = ValidValues.FirstOrDefault();
    6756    }
    68 
    69     public ConstrainedValueParameter()
    70       : base("Anonymous", typeof(T)) {
    71       ValidValues = new ItemSet<T>();
    72     }
    73     public ConstrainedValueParameter(string name)
    74       : base(name, typeof(T)) {
    75       ValidValues = new ItemSet<T>();
    76     }
    77     public ConstrainedValueParameter(string name, ItemSet<T> validValues)
    78       : base(name, typeof(T)) {
    79       ValidValues = validValues;
    80     }
    81     public ConstrainedValueParameter(string name, ItemSet<T> validValues, T value)
    82       : base(name, typeof(T)) {
    83       ValidValues = validValues;
    84       Value = value;
    85     }
    86     public ConstrainedValueParameter(string name, string description)
    87       : base(name, description, typeof(T)) {
    88       ValidValues = new ItemSet<T>();
    89     }
    90     public ConstrainedValueParameter(string name, string description, ItemSet<T> validValues)
    91       : base(name, description, typeof(T)) {
    92       ValidValues = validValues;
    93     }
    94     public ConstrainedValueParameter(string name, string description, ItemSet<T> validValues, T value)
    95       : base(name, description, typeof(T)) {
    96       ValidValues = validValues;
    97       Value = value;
    98     }
    99 
    100     public override IDeepCloneable Clone(Cloner cloner) {
    101       ConstrainedValueParameter<T> clone = (ConstrainedValueParameter<T>)base.Clone(cloner);
    102       clone.ValidValues = (ItemSet<T>)cloner.Clone(validValues);
    103       clone.Value = (T)cloner.Clone(value);
    104       return clone;
    105     }
    106 
    107     public override string ToString() {
    108       return string.Format("{0}: {1} ({2})", Name, Value != null ? Value.ToString() : "null", DataType.GetPrettyName());
    109     }
    110 
    111     protected override IItem GetActualValue() {
    112       return Value;
    113     }
    114     protected override void SetActualValue(IItem value) {
    115       ((IValueParameter)this).Value = value;
    116     }
    117 
    118     public event EventHandler ValueChanged;
    119     private void OnValueChanged() {
    120       if (ValueChanged != null)
    121         ValueChanged(this, EventArgs.Empty);
    122       OnChanged();
    123     }
    124 
    125     private void RegisterValidValuesEvents() {
    126       if (validValues != null) {
    127         validValues.ItemsRemoved += new HeuristicLab.Collections.CollectionItemsChangedEventHandler<T>(ValidValues_ItemsRemoved);
    128         validValues.CollectionReset += new HeuristicLab.Collections.CollectionItemsChangedEventHandler<T>(ValidValues_CollectionReset);
    129         validValues.Changed += new ChangedEventHandler(ValidValues_Changed);
    130       }
    131     }
    132     private void DeregisterValidValuesEvents() {
    133       if (validValues != null) {
    134         validValues.ItemsRemoved -= new HeuristicLab.Collections.CollectionItemsChangedEventHandler<T>(ValidValues_ItemsRemoved);
    135         validValues.CollectionReset -= new HeuristicLab.Collections.CollectionItemsChangedEventHandler<T>(ValidValues_CollectionReset);
    136         validValues.Changed -= new ChangedEventHandler(ValidValues_Changed);
    137       }
    138     }
    139 
    140     private void ValidValues_ItemsRemoved(object sender, HeuristicLab.Collections.CollectionItemsChangedEventArgs<T> e) {
    141       if ((Value != null) && !validValues.Contains(Value)) Value = null;
    142     }
    143     private void ValidValues_CollectionReset(object sender, HeuristicLab.Collections.CollectionItemsChangedEventArgs<T> e) {
    144       if ((Value != null) && !validValues.Contains(Value)) Value = null;
    145     }
    146     private void ValidValues_Changed(object sender, ChangedEventArgs e) {
    147       OnChanged(e);
     57    protected override void ValidValues_CollectionReset(object sender, CollectionItemsChangedEventArgs<T> e) {
     58      if ((Value != null) && !ValidValues.Contains(Value)) Value = ValidValues.FirstOrDefault();
    14859    }
    14960  }
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