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