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//
// System.ComponentModel.Design.ServiceContainer.cs
//
// Authors:
// Martin Willemoes Hansen (mwh@sysrq.dk)
// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
// Ivan N. Zlatev (contact i-nZ.net)
//
// (C) 2003 Martin Willemoes Hansen
// (C) 2003 Andreas Nahr
// (C) 2006 Ivan N. Zlatev
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
namespace System.ComponentModel.Design
{
#if NET_2_0
public class ServiceContainer : IServiceContainer, IServiceProvider, IDisposable
#else
public sealed class ServiceContainer : IServiceContainer, IServiceProvider
#endif
{
private IServiceProvider parentProvider;
private Hashtable services = new Hashtable ();
#if NET_2_0
private bool _disposed = false;
#endif
public ServiceContainer()
: this (null)
{
}
public ServiceContainer (IServiceProvider parentProvider)
{
this.parentProvider = parentProvider;
}
public void AddService (Type serviceType, object serviceInstance)
{
AddService (serviceType, serviceInstance, false);
}
public void AddService (Type serviceType, ServiceCreatorCallback callback)
{
AddService (serviceType, callback, false);
}
public void AddService (Type serviceType,
object serviceInstance,
bool promote)
{
if (serviceType == null)
throw new ArgumentNullException ("serviceType", "Cannot be null");
if (promote)
if (parentProvider != null)
((IServiceContainer)parentProvider.GetService(typeof(IServiceContainer))).AddService (serviceType, serviceInstance, promote);
if (services.Contains (serviceType)) {
throw new ArgumentException (string.Format ("The service {0} already exists in the service container.", serviceType.ToString()));
}
services.Add (serviceType, serviceInstance);
}
public void AddService (Type serviceType,
ServiceCreatorCallback callback,
bool promote)
{
if (serviceType == null)
throw new ArgumentNullException ("serviceType", "Cannot be null");
if (promote)
if (parentProvider != null)
((IServiceContainer)parentProvider.GetService(typeof(IServiceContainer))).AddService (serviceType, callback, promote);
if (services.Contains (serviceType)) {
throw new ArgumentException (string.Format ("The service {0} already exists in the service container.", serviceType.ToString()));
}
services.Add (serviceType, callback);
}
public void RemoveService (Type serviceType)
{
RemoveService (serviceType, false);
}
#if NET_2_0
public virtual void RemoveService (Type serviceType, bool promote)
#else
public void RemoveService (Type serviceType, bool promote)
#endif
{
if (serviceType == null)
throw new ArgumentNullException ("serviceType", "Cannot be null");
if (promote)
if (parentProvider != null)
((IServiceContainer)parentProvider.GetService(typeof(IServiceContainer))).RemoveService (serviceType, promote);
else
services.Remove (serviceType);
}
public object GetService (Type serviceType)
{
object result = services[serviceType];
if (result == null && parentProvider != null){
result = parentProvider.GetService (serviceType);
}
if (result != null) {
ServiceCreatorCallback cb = result as ServiceCreatorCallback;
if (cb != null) {
result = cb (this, serviceType);
services[serviceType] = result;
}
}
return result;
}
#if NET_2_0
public void Dispose ()
{
this.Dispose (true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose (bool disposing)
{
if (!_disposed) {
if (disposing) {
if (this.services != null) {
foreach (object obj in this.services) {
if (obj is IDisposable) {
((IDisposable) obj).Dispose ();
}
}
this.services = null;
}
}
_disposed = true;
}
}
~ServiceContainer ()
{
Dispose (false);
}
#endif
}
}
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