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//------------------------------------------------------------------------------
// <copyright file="TransformerInfoCollection.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.Configuration {
using System;
using System.Configuration;
using System.Collections;
using System.Collections.Specialized;
using System.Security.Principal;
using System.Web;
using System.Web.Compilation;
using System.Web.Configuration;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.Util;
using System.Xml;
using System.Security.Permissions;
[ConfigurationCollection(typeof(TransformerInfo))]
public sealed class TransformerInfoCollection : ConfigurationElementCollection {
private static ConfigurationPropertyCollection _properties;
private Hashtable _transformerEntries;
static TransformerInfoCollection() {
_properties = new ConfigurationPropertyCollection();
}
/// <internalonly />
protected override ConfigurationPropertyCollection Properties {
get {
return _properties;
}
}
public TransformerInfo this[int index] {
get {
return (TransformerInfo)BaseGet(index);
}
set {
if (BaseGet(index) != null) {
BaseRemoveAt(index);
}
BaseAdd(index, value);
}
}
public void Add(TransformerInfo transformerInfo) {
BaseAdd(transformerInfo);
}
public void Clear() {
BaseClear();
}
/// <internalonly />
protected override ConfigurationElement CreateNewElement() {
return new TransformerInfo();
}
public void Remove(string s) {
BaseRemove(s);
}
public void RemoveAt(int index) {
BaseRemoveAt(index);
}
/// <internalonly />
protected override object GetElementKey(ConfigurationElement element) {
return ((TransformerInfo)element).Name;
}
internal Hashtable GetTransformerEntries() {
if (_transformerEntries == null) {
lock (this) {
if (_transformerEntries == null) {
_transformerEntries = new Hashtable(StringComparer.OrdinalIgnoreCase);
foreach (TransformerInfo ti in this) {
Type transformerType = ConfigUtil.GetType(ti.Type, "type", ti);
if (transformerType.IsSubclassOf(typeof(WebPartTransformer)) == false) {
throw new ConfigurationErrorsException(
SR.GetString(SR.Type_doesnt_inherit_from_type,
ti.Type,
typeof(WebPartTransformer).FullName),
ti.ElementInformation.Properties["type"].Source,
ti.ElementInformation.Properties["type"].LineNumber);
}
Type consumerType;
Type providerType;
try {
consumerType = WebPartTransformerAttribute.GetConsumerType(transformerType);
providerType = WebPartTransformerAttribute.GetProviderType(transformerType);
}
catch (Exception e) {
throw new ConfigurationErrorsException(
SR.GetString(SR.Transformer_attribute_error, e.Message),
e,
ti.ElementInformation.Properties["type"].Source,
ti.ElementInformation.Properties["type"].LineNumber);
}
if (_transformerEntries.Count != 0) {
foreach (DictionaryEntry entry in _transformerEntries) {
Type existingTransformerType = (Type)entry.Value;
// We know these methods will not throw, because for the type to be in the transformers
// collection, we must have successfully gotten the types previously without an exception.
Type existingConsumerType =
WebPartTransformerAttribute.GetConsumerType(existingTransformerType);
Type existingProviderType =
WebPartTransformerAttribute.GetProviderType(existingTransformerType);
if ((consumerType == existingConsumerType) && (providerType == existingProviderType)) {
throw new ConfigurationErrorsException(
SR.GetString(SR.Transformer_types_already_added,
(string)entry.Key,
ti.Name),
ti.ElementInformation.Properties["type"].Source,
ti.ElementInformation.Properties["type"].LineNumber);
}
}
}
_transformerEntries[ti.Name] = transformerType;
}
}
}
}
//
return _transformerEntries;
}
}
}
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