Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Xaml.Hosting/System/Xaml/Hosting/Configuration/HandlerElement.cs

@@ -0,0 +1,117 @@
+//------------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+namespace System.Xaml.Hosting.Configuration
+{
+    using System;
+    using System.Web;
+    using System.Configuration;
+    using System.Diagnostics.CodeAnalysis;
+    using System.Runtime;
+
+    public sealed class HandlerElement : ConfigurationElement
+    {
+        static ConfigurationPropertyCollection properties = InitializeProperties(); 
+
+        Type httpHandlerCLRType;
+
+        Type xamlRootElementClrType;
+
+        static ConfigurationPropertyCollection InitializeProperties()
+        {
+            ConfigurationProperty handler = new ConfigurationProperty(XamlHostingConfiguration.HttpHandlerType, typeof(string), " ", null, new StringValidator(1), ConfigurationPropertyOptions.IsRequired);
+            ConfigurationProperty xamlRoot = new ConfigurationProperty(XamlHostingConfiguration.XamlRootElementType, typeof(string), " ", null, new StringValidator(1), ConfigurationPropertyOptions.IsKey | ConfigurationPropertyOptions.IsRequired);
+            ConfigurationPropertyCollection tempProperties = new ConfigurationPropertyCollection(); 
+            tempProperties.Add(xamlRoot);
+            tempProperties.Add(handler);
+            return tempProperties;
+        }
+
+        public HandlerElement()
+        {
+        }
+
+        [SuppressMessage(FxCop.Category.Usage, FxCop.Rule.DoNotCallOverridableMethodsInConstructors,
+            Justification = "This is enforced by configuration classes in framework library")]
+        public HandlerElement(string xamlType, string handlerType)
+        {
+            XamlRootElementType = xamlType;
+            HttpHandlerType = handlerType;
+        }
+
+        [ConfigurationProperty(XamlHostingConfiguration.HttpHandlerType, DefaultValue = " ",
+            Options = ConfigurationPropertyOptions.IsRequired)]
+        [StringValidator(MinLength = 1)]
+        public string HttpHandlerType
+        {
+            get
+            {
+                return (string)base[XamlHostingConfiguration.HttpHandlerType];
+            }
+            set
+            {
+                if (string.IsNullOrEmpty(value))
+                {
+                    value = string.Empty;
+                }
+                base[XamlHostingConfiguration.HttpHandlerType] = value;
+            }
+        }
+
+        [ConfigurationProperty(XamlHostingConfiguration.XamlRootElementType, DefaultValue = " ",
+            Options = ConfigurationPropertyOptions.IsKey | ConfigurationPropertyOptions.IsRequired)]
+        [StringValidator(MinLength = 1)]
+        public string XamlRootElementType
+        {
+            get
+            {
+                return (string)base[XamlHostingConfiguration.XamlRootElementType];
+            }
+            set
+            {
+                if (string.IsNullOrEmpty(value))
+                {
+                    value = string.Empty;
+                }
+                base[XamlHostingConfiguration.XamlRootElementType] = value;
+            }
+        }
+
+        internal string Key
+        {
+            get
+            {
+                return XamlRootElementType;
+            }
+        }
+
+        protected override ConfigurationPropertyCollection Properties
+        {
+            get
+            {
+                return properties;
+            }
+        }
+
+        internal Type LoadHttpHandlerType()
+        {
+            if (this.httpHandlerCLRType == null)
+            {
+                this.httpHandlerCLRType = Type.GetType(HttpHandlerType, true);
+            }
+            return this.httpHandlerCLRType;
+        }
+
+
+        internal Type LoadXamlRootElementType()
+        {
+            if (this.xamlRootElementClrType == null)
+            {
+                this.xamlRootElementClrType = Type.GetType(XamlRootElementType, true);
+            }
+            return this.xamlRootElementClrType;
+        }
+    }
+}
+