//Copyright (c) Microsoft Corporation. All rights reserved. using System; using MS.WindowsAPICodePack.Internal; namespace Microsoft.WindowsAPICodePack.Shell.PropertySystem { /// <summary> /// Defines the enumeration values for a property type. /// </summary> public class ShellPropertyEnumType { #region Private Properties private string displayText = null; private PropEnumType? enumType; private object minValue = null, setValue = null, enumerationValue = null; private IPropertyEnumType NativePropertyEnumType { set; get; } #endregion #region Internal Constructor internal ShellPropertyEnumType(IPropertyEnumType nativePropertyEnumType) { NativePropertyEnumType = nativePropertyEnumType; } #endregion #region Public Properties /// <summary> /// Gets display text from an enumeration information structure. /// </summary> public string DisplayText { get { if (displayText == null) { NativePropertyEnumType.GetDisplayText(out displayText); } return displayText; } } /// <summary> /// Gets an enumeration type from an enumeration information structure. /// </summary> public PropEnumType EnumType { get { if (!enumType.HasValue) { PropEnumType tempEnumType; NativePropertyEnumType.GetEnumType(out tempEnumType); enumType = tempEnumType; } return enumType.Value; } } /// <summary> /// Gets a minimum value from an enumeration information structure. /// </summary> public object RangeMinValue { get { if (minValue == null) { PropVariant propVar; NativePropertyEnumType.GetRangeMinValue(out propVar); minValue = propVar.Value; } return minValue; } } /// <summary> /// Gets a set value from an enumeration information structure. /// </summary> public object RangeSetValue { get { if (setValue == null) { PropVariant propVar; NativePropertyEnumType.GetRangeSetValue(out propVar); setValue = propVar.Value; } return setValue; } } /// <summary> /// Gets a value from an enumeration information structure. /// </summary> public object RangeValue { get { if (enumerationValue == null) { PropVariant propVar; NativePropertyEnumType.GetValue(out propVar); enumerationValue = propVar.Value; } return enumerationValue; } } #endregion } }
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