88 lines
3.5 KiB
C#
88 lines
3.5 KiB
C#
namespace System.Web.Mvc {
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Web.Mvc.Resources;
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public class ReflectedControllerDescriptor : ControllerDescriptor {
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private ActionDescriptor[] _canonicalActionsCache;
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private readonly Type _controllerType;
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private readonly ActionMethodSelector _selector;
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public ReflectedControllerDescriptor(Type controllerType) {
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if (controllerType == null) {
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throw new ArgumentNullException("controllerType");
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}
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_controllerType = controllerType;
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_selector = new ActionMethodSelector(_controllerType);
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}
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public sealed override Type ControllerType {
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get {
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return _controllerType;
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}
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}
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public override ActionDescriptor FindAction(ControllerContext controllerContext, string actionName) {
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if (controllerContext == null) {
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throw new ArgumentNullException("controllerContext");
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}
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if (String.IsNullOrEmpty(actionName)) {
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throw new ArgumentException(MvcResources.Common_NullOrEmpty, "actionName");
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}
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MethodInfo matched = _selector.FindActionMethod(controllerContext, actionName);
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if (matched == null) {
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return null;
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}
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return new ReflectedActionDescriptor(matched, actionName, this);
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}
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private MethodInfo[] GetAllActionMethodsFromSelector() {
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List<MethodInfo> allValidMethods = new List<MethodInfo>();
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allValidMethods.AddRange(_selector.AliasedMethods);
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allValidMethods.AddRange(_selector.NonAliasedMethods.SelectMany(g => g));
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return allValidMethods.ToArray();
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}
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public override ActionDescriptor[] GetCanonicalActions() {
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ActionDescriptor[] actions = LazilyFetchCanonicalActionsCollection();
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// need to clone array so that user modifications aren't accidentally stored
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return (ActionDescriptor[])actions.Clone();
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}
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public override object[] GetCustomAttributes(bool inherit) {
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return ControllerType.GetCustomAttributes(inherit);
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}
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public override object[] GetCustomAttributes(Type attributeType, bool inherit) {
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return ControllerType.GetCustomAttributes(attributeType, inherit);
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}
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internal override IEnumerable<FilterAttribute> GetFilterAttributes(bool useCache) {
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if (useCache && GetType() == typeof(ReflectedControllerDescriptor)) {
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// Do not look at cache in types derived from this type because they might incorrectly implement GetCustomAttributes
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return ReflectedAttributeCache.GetTypeFilterAttributes(ControllerType);
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}
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return base.GetFilterAttributes(useCache);
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}
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public override bool IsDefined(Type attributeType, bool inherit) {
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return ControllerType.IsDefined(attributeType, inherit);
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}
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private ActionDescriptor[] LazilyFetchCanonicalActionsCollection() {
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return DescriptorUtil.LazilyFetchOrCreateDescriptors<MethodInfo, ActionDescriptor>(
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ref _canonicalActionsCache /* cacheLocation */,
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GetAllActionMethodsFromSelector /* initializer */,
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methodInfo => ReflectedActionDescriptor.TryCreateDescriptor(methodInfo, methodInfo.Name, this) /* converter */);
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}
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}
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}
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