68 lines
2.2 KiB
C#
68 lines
2.2 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="WebPartTracker.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.ComponentModel;
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using System.Diagnostics;
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using System.Drawing.Design;
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using System.Web;
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using System.Web.UI;
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public sealed class WebPartTracker : IDisposable {
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private bool _disposed;
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private WebPart _webPart;
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private ProviderConnectionPoint _providerConnectionPoint;
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public WebPartTracker(WebPart webPart, ProviderConnectionPoint providerConnectionPoint) {
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if (webPart == null) {
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throw new ArgumentNullException("webPart");
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}
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if (providerConnectionPoint == null) {
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throw new ArgumentNullException("providerConnectionPoint");
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}
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if (providerConnectionPoint.ControlType != webPart.GetType()) {
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throw new ArgumentException(SR.GetString(SR.WebPartManager_InvalidConnectionPoint), "providerConnectionPoint");
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}
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_webPart = webPart;
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_providerConnectionPoint = providerConnectionPoint;
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if (++Count > 1) {
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webPart.SetConnectErrorMessage(SR.GetString(SR.WebPartTracker_CircularConnection, _providerConnectionPoint.DisplayName));
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}
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}
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public bool IsCircularConnection {
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get {
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return (Count > 1);
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}
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}
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private int Count {
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get {
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int count;
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_webPart.TrackerCounter.TryGetValue(_providerConnectionPoint, out count);
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return count;
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}
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set {
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_webPart.TrackerCounter[_providerConnectionPoint] = value;
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}
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}
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void IDisposable.Dispose() {
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if (!_disposed) {
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Debug.Assert(Count >= 1);
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Count--;
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_disposed = true;
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}
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}
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}
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}
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