128 lines
4.3 KiB
C#
128 lines
4.3 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="WebPartDisplayModeCollection.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.UI.WebControls.WebParts {
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using System;
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using System.Collections;
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public sealed class WebPartDisplayModeCollection : CollectionBase {
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private bool _readOnly;
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private string _readOnlyExceptionMessage;
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// Prevent instantiation outside of our assembly. We want third-part code to use the collection
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// returned by the base method, not create a new collection.
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internal WebPartDisplayModeCollection() {
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}
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public bool IsReadOnly {
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get {
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return _readOnly;
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}
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}
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public WebPartDisplayMode this[int index] {
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get {
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return (WebPartDisplayMode)List[index];
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}
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}
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public WebPartDisplayMode this[string modeName] {
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get {
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foreach (WebPartDisplayMode displayMode in List) {
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if (String.Equals(displayMode.Name, modeName, StringComparison.OrdinalIgnoreCase)) {
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return displayMode;
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}
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}
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return null;
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}
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}
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public int Add(WebPartDisplayMode value) {
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return List.Add(value);
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}
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internal int AddInternal(WebPartDisplayMode value) {
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bool isReadOnly = _readOnly;
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_readOnly = false;
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// Extra try-catch block to prevent elevation of privilege attack via exception filter
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try {
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try {
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return List.Add(value);
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}
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finally {
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_readOnly = isReadOnly;
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}
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}
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catch {
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throw;
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}
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}
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private void CheckReadOnly() {
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if (_readOnly) {
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throw new InvalidOperationException(SR.GetString(_readOnlyExceptionMessage));
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}
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}
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public bool Contains(WebPartDisplayMode value) {
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return List.Contains(value);
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}
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public void CopyTo(WebPartDisplayMode[] array, int index) {
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List.CopyTo(array, index);
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}
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public int IndexOf(WebPartDisplayMode value) {
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return List.IndexOf(value);
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}
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public void Insert(int index, WebPartDisplayMode value) {
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List.Insert(index, value);
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}
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protected override void OnClear() {
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throw new InvalidOperationException(SR.GetString(SR.WebPartDisplayModeCollection_CantRemove));
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}
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protected override void OnInsert(int index, object value) {
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CheckReadOnly();
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WebPartDisplayMode displayMode = (WebPartDisplayMode)value;
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foreach (WebPartDisplayMode existingDisplayMode in List) {
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if (displayMode.Name == existingDisplayMode.Name) {
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throw new ArgumentException(SR.GetString(SR.WebPartDisplayModeCollection_DuplicateName, displayMode.Name));
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}
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}
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base.OnInsert(index, value);
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}
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protected override void OnRemove(int index, object value) {
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throw new InvalidOperationException(SR.GetString(SR.WebPartDisplayModeCollection_CantRemove));
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}
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protected override void OnSet(int index, object oldValue, object newValue) {
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throw new InvalidOperationException(SR.GetString(SR.WebPartDisplayModeCollection_CantSet));
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}
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protected override void OnValidate(object value) {
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base.OnValidate(value);
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if (value == null) {
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throw new ArgumentNullException("value", SR.GetString(SR.Collection_CantAddNull));
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}
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if (!(value is WebPartDisplayMode)) {
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throw new ArgumentException(SR.GetString(SR.Collection_InvalidType, "WebPartDisplayMode"), "value");
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}
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}
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internal void SetReadOnly(string exceptionMessage) {
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_readOnlyExceptionMessage = exceptionMessage;
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_readOnly = true;
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}
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}
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}
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