102 lines
3.7 KiB
C#
102 lines
3.7 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="WebPartCollection.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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using System.Diagnostics;
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using System.Globalization;
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/// <devdoc>
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/// Read-only collection of WebParts. Collection cannot be modified after contstruction.
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/// </devdoc>
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public sealed class WebPartCollection : ReadOnlyCollectionBase {
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public WebPartCollection() {
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}
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public WebPartCollection(ICollection webParts) {
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if (webParts == null) {
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throw new ArgumentNullException("webParts");
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}
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foreach (object obj in webParts) {
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if (obj == null) {
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throw new ArgumentException(SR.GetString(SR.Collection_CantAddNull), "webParts");
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}
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if (!(obj is WebPart)) {
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throw new ArgumentException(SR.GetString(SR.Collection_InvalidType, "WebPart"), "webParts");
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}
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InnerList.Add(obj);
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}
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}
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internal int Add(WebPart value) {
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Debug.Assert(value != null);
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return InnerList.Add(value);
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}
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public bool Contains(WebPart value) {
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return InnerList.Contains(value);
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}
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public int IndexOf(WebPart value) {
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return InnerList.IndexOf(value);
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}
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public WebPart this[int index] {
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get {
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return (WebPart) InnerList[index];
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}
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}
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/// <devdoc>
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/// Returns the WebPart with the specified id, or the GenericWebPart containing a control with
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/// the specified id, or the ProxyWebPart with OriginalID or GenericWebPartID equal to the
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/// specified id, performing a case-insensitive comparison. Returns null if there are no matches.
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/// </devdoc>
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public WebPart this[string id] {
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// PERF: Use a hashtable for lookup, instead of a linear search
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get {
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foreach (WebPart webPart in InnerList) {
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if (String.Equals(webPart.ID, id, StringComparison.OrdinalIgnoreCase)) {
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return webPart;
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}
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GenericWebPart genericWebPart = webPart as GenericWebPart;
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if (genericWebPart != null) {
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Control control = genericWebPart.ChildControl;
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if (control != null) {
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if (String.Equals(control.ID, id, StringComparison.OrdinalIgnoreCase)) {
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return genericWebPart;
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}
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}
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}
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ProxyWebPart proxyWebPart = webPart as ProxyWebPart;
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if (proxyWebPart != null) {
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if ((String.Equals(proxyWebPart.OriginalID, id, StringComparison.OrdinalIgnoreCase)) ||
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(String.Equals(proxyWebPart.GenericWebPartID, id, StringComparison.OrdinalIgnoreCase))) {
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return proxyWebPart;
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}
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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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/// <devdoc>
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/// <para>Copies contents from the collection to a specified array with a
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/// specified starting index.</para>
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/// </devdoc>
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public void CopyTo(WebPart[] array, int index) {
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InnerList.CopyTo(array, index);
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}
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}
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}
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