71 lines
2.5 KiB
Plaintext
71 lines
2.5 KiB
Plaintext
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using System;
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using System.ComponentModel;
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using System.Globalization;
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namespace DTS.Common.Classes.DSP
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{
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/// <summary>
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/// this converter is used to display DSPFilterCollection in a property grid
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/// </summary>
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[System.Diagnostics.CodeAnalysis.SuppressMessage("Minor Code Smell", "S101:Types should be named in PascalCase", Justification = "Acronym")]
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public class DSPFilterConverter : ArrayConverter
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{
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private DSPFilterCollection _collection = null;
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private static readonly object MyLock = new object();
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private DSPFilterType[] _values = null;
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private DSPFilterCollection GetCollection()
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{
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lock (MyLock)
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{
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if (null == _collection)
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{
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_collection = DSPFilterCollection.GetDSPFilterCollection();
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}
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return _collection;
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}
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}
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public DSPFilterType [] Values
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{
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get
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{
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lock (MyLock)
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{
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if (null == _values)
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{
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var collection = GetCollection();
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var array = new DSPFilterType[collection.Count];
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collection.CopyTo(array, 0);
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_values = array;
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}
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}
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return _values;
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}
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}
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public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
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{
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if (sourceType == typeof(string)) { return true; }
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return base.CanConvertFrom(context, sourceType);
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}
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public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
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{
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var result = Array.Find(Values, x => x.DisplayString == (string)value);
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if (result != null) { return result; }
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return base.ConvertFrom(context, culture, value);
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}
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public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
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{
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return true;
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}
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public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
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{
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return true;
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}
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public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
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{
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var collection = GetCollection();
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return new StandardValuesCollection(collection);
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}
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}
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}
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