Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

external/referencesource/System.Configuration/System/Configuration/PropertyInformation.cs

@@ -0,0 +1,212 @@
+//------------------------------------------------------------------------------
+// <copyright file="PropertyInformation.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Configuration;
+using System.Collections.Specialized;
+using System.ComponentModel;
+using System.Collections;
+using System.Runtime.Serialization;
+
+namespace System.Configuration {
+
+    // PropertyInformation
+    //
+    // Contains information about a property
+    //
+    public sealed class PropertyInformation {
+        
+        private ConfigurationElement ThisElement = null;
+        private string PropertyName;
+        private ConfigurationProperty _Prop = null;
+        private const string LockAll = "*";
+        
+        private ConfigurationProperty Prop {
+            get {
+                if (_Prop == null) {
+                    _Prop = ThisElement.Properties[PropertyName];
+                }
+                return _Prop;
+            }
+        }
+
+        internal PropertyInformation(ConfigurationElement thisElement, string propertyName) {
+            PropertyName = propertyName;
+            ThisElement = thisElement;
+        }
+
+        
+        public string Name {
+            get {
+                return PropertyName;
+            }
+        }
+
+
+        internal string ProvidedName {
+            get {
+                return Prop.ProvidedName;
+            }
+        }
+
+
+        public object Value {
+            get {
+                return ThisElement[PropertyName];
+            }
+            set {
+                ThisElement[PropertyName] = value;
+            }
+        }
+
+        // DefaultValue
+        //
+        // What is the default value for this property
+        //
+        public object DefaultValue {
+            get {
+                return Prop.DefaultValue;
+            }
+        }
+
+        // ValueOrigin
+        //
+        // Where was the property retrieved from
+        //
+        public PropertyValueOrigin ValueOrigin {
+            get {
+                if (ThisElement.Values[PropertyName] == null) {
+                    return PropertyValueOrigin.Default;
+                }
+                if (ThisElement.Values.IsInherited(PropertyName)) {
+                    return PropertyValueOrigin.Inherited;
+                }
+                return PropertyValueOrigin.SetHere;
+            }
+        }
+
+        // IsModified
+        //
+        // Was the property Modified
+        //
+        public bool IsModified {
+            get {
+                if (ThisElement.Values[PropertyName] == null) {
+                    return false;
+                }
+                if (ThisElement.Values.IsModified(PropertyName)) {
+                    return true;
+                }
+                return false;
+            }
+        }
+        // IsKey
+        //
+        // Is this property a key?
+        //
+        public bool IsKey {
+            get {
+                return Prop.IsKey;
+            }
+        }
+
+        // IsRequired
+        //
+        // Is this property required?
+        //
+        public bool IsRequired {
+            get {
+                return Prop.IsRequired;
+            }
+        }
+
+        // IsLocked
+        //
+        // Is this property locked?
+        //
+        public bool IsLocked {
+            get {
+                return ((ThisElement.LockedAllExceptAttributesList != null && !ThisElement.LockedAllExceptAttributesList.DefinedInParent(PropertyName)) ||
+                    (ThisElement.LockedAttributesList != null && 
+                        (ThisElement.LockedAttributesList.DefinedInParent(PropertyName) || 
+                         ThisElement.LockedAttributesList.DefinedInParent(LockAll))) ||
+                        (((ThisElement.ItemLocked & ConfigurationValueFlags.Locked)    != 0) &&
+                         ((ThisElement.ItemLocked & ConfigurationValueFlags.Inherited) != 0)));
+            }
+        }
+
+        // Source
+        //
+        // What is the source file where this data came from
+        //
+        public string Source {
+            get {
+                PropertySourceInfo psi = ThisElement.Values.GetSourceInfo(PropertyName);
+                if (psi == null) {
+                    psi = ThisElement.Values.GetSourceInfo(String.Empty);
+                }
+                if (psi == null) {
+                    return String.Empty;
+                }
+                return psi.FileName;
+            }
+        }
+
+        // LineNumber
+        //
+        // What is the line number associated with the source
+        //
+        // Note:
+        //   1 is the first line in the file.  0 is returned when there is no 
+        //   source
+        //
+        public int LineNumber {
+            get {
+                PropertySourceInfo psi = ThisElement.Values.GetSourceInfo(PropertyName);
+                if (psi == null) {
+                    psi = ThisElement.Values.GetSourceInfo(String.Empty);
+                }
+                if (psi == null) {
+                    return 0;
+                }
+                return psi.LineNumber;
+            }
+        }
+
+        // Type
+        //
+        // What is the type for the property
+        //
+        public Type Type {
+            get {
+                return Prop.Type;
+            }
+        }
+
+        // Validator
+        //
+        public ConfigurationValidatorBase Validator {
+            get {
+                return Prop.Validator;
+            }
+        }
+
+        // Converter
+        //
+        public TypeConverter Converter {
+            get {
+                return Prop.Converter;
+            }
+        }
+
+        // Property description ( comments etc )
+        public string Description {
+            get {
+                return Prop.Description;
+            }
+        }
+    }
+}