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using System;
using System.Collections.Generic;
using System.Text;
namespace Rssdp.Infrastructure
{
/// <summary>
/// Correclty implements the <see cref="IDisposable"/> interface and pattern for an object containing only managed resources, and adds a few common niceities not on the interface such as an <see cref="IsDisposed"/> property.
/// </summary>
public abstract class DisposableManagedObjectBase : IDisposable
{
#region Public Methods
/// <summary>
/// Override this method and dispose any objects you own the lifetime of if disposing is true;
/// </summary>
/// <param name="disposing">True if managed objects should be disposed, if false, only unmanaged resources should be released.</param>
protected abstract void Dispose(bool disposing);
/// <summary>
/// Throws and <see cref="ObjectDisposedException"/> if the <see cref="IsDisposed"/> property is true.
/// </summary>
/// <seealso cref="IsDisposed"/>
/// <exception cref="ObjectDisposedException">Thrown if the <see cref="IsDisposed"/> property is true.</exception>
/// <seealso cref="Dispose()"/>
protected virtual void ThrowIfDisposed()
{
if (this.IsDisposed) throw new ObjectDisposedException(this.GetType().FullName);
}
#endregion
#region Public Properties
/// <summary>
/// Sets or returns a boolean indicating whether or not this instance has been disposed.
/// </summary>
/// <seealso cref="Dispose()"/>
public bool IsDisposed
{
get;
private set;
}
#endregion
public string BuildMessage(string header, Dictionary<string, string> values)
{
var builder = new StringBuilder();
const string argFormat = "{0}: {1}\r\n";
builder.AppendFormat("{0}\r\n", header);
foreach (var pair in values)
{
builder.AppendFormat(argFormat, pair.Key, pair.Value);
}
builder.Append("\r\n");
return builder.ToString();
}
#region IDisposable Members
/// <summary>
/// Disposes this object instance and all internally managed resources.
/// </summary>
/// <remarks>
/// <para>Sets the <see cref="IsDisposed"/> property to true. Does not explicitly throw an exception if called multiple times, but makes no promises about behaviour of derived classes.</para>
/// </remarks>
/// <seealso cref="IsDisposed"/>
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1063:ImplementIDisposableCorrectly", Justification = "We do exactly as asked, but CA doesn't seem to like us also setting the IsDisposed property. Too bad, it's a good idea and shouldn't cause an exception or anything likely to interfer with the dispose process.")]
public void Dispose()
{
IsDisposed = true;
Dispose(true);
}
#endregion
}
}
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