/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!_isDisposed)
{
ExportProvider?rootProvider = null;
IDisposable? disposableAncestorExportProvider = null;
IDisposable? disposableLocalExportProvider = null;
IDisposable? disposableRootProvider = null;
ComposablePartExportProvider?partExportProvider = null;
CatalogExportProvider? catalogExportProvider = null;
ImportEngine?importEngine = null;
lock (_lock)
{
if (!_isDisposed)
{
rootProvider = _rootProvider;
_rootProvider = null !;
disposableRootProvider = _disposableRootProvider;
_disposableRootProvider = null;
disposableLocalExportProvider = _disposableLocalExportProvider;
_disposableLocalExportProvider = null;
_localExportProvider = null !;
disposableAncestorExportProvider = _disposableAncestorExportProvider;
_disposableAncestorExportProvider = null;
_ancestorExportProvider = null;
partExportProvider = _partExportProvider;
_partExportProvider = null !;
catalogExportProvider = _catalogExportProvider;
_catalogExportProvider = null;
importEngine = _importEngine;
_importEngine = null;
_isDisposed = true;
}
}
if (rootProvider != null)
{
rootProvider.ExportsChanged -= OnExportsChangedInternal;
rootProvider.ExportsChanging -= OnExportsChangingInternal;
}
disposableRootProvider?.Dispose();
disposableAncestorExportProvider?.Dispose();
disposableLocalExportProvider?.Dispose();
catalogExportProvider?.Dispose();
partExportProvider?.Dispose();
importEngine?.Dispose();
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="CompositionContainer"/> class
/// with the specified catalog and export providers.
/// </summary>
/// <param name="compositionSettings">
/// <see cref="CompositionOptions"/> enumeration with flags controlling the composition.
/// </param>
/// <param name="providers">
/// A <see cref="Array"/> of <see cref="ExportProvider"/> objects which provide
/// the <see cref="CompositionContainer"/> access to <see cref="Export"/> objects,
/// or <see langword="null"/> to set <see cref="Providers"/> to an empty
/// <see cref="ReadOnlyCollection{T}"/>.
/// </param>
/// <exception cref="ArgumentException">
/// <paramref name="providers"/> contains an element that is <see langword="null"/>.
/// </exception>
public CompositionContainer(ComposablePartCatalog catalog, CompositionOptions compositionOptions, params ExportProvider[] providers)
{
if (compositionOptions > (CompositionOptions.DisableSilentRejection | CompositionOptions.IsThreadSafe | CompositionOptions.ExportCompositionService))
{
throw new ArgumentOutOfRangeException("compositionOptions");
}
this._compositionOptions = compositionOptions;
this._partExportProvider = new ComposablePartExportProvider(compositionOptions);
this._partExportProvider.SourceProvider = this;
bool multiProvider = (catalog != null) || providers.Length > 0;
if (multiProvider)
{
if (catalog != null)
{
this._catalogExportProvider = new CatalogExportProvider(catalog, compositionOptions);
this._catalogExportProvider.SourceProvider = this;
this._localExportProvider = new AggregateExportProvider(this._partExportProvider, this._catalogExportProvider);
}
else
{
this._localExportProvider = new AggregateExportProvider(this._partExportProvider);
}
if (providers != null && providers.Length > 0)
{
this._ancestorExportProvider = new AggregateExportProvider(providers);
this._rootProvider = new AggregateExportProvider(this._localExportProvider, this._ancestorExportProvider);
}
else
{
this._rootProvider = this._localExportProvider;
}
}
else
{
this._rootProvider = this._partExportProvider;
}
//Insert Composition Service
if (compositionOptions.HasFlag(CompositionOptions.ExportCompositionService))
{
this.ComposeExportedValue <ICompositionService>(new CompositionServiceShim(this));
}
this._rootProvider.ExportsChanged += this.OnExportsChangedInternal;
this._rootProvider.ExportsChanging += this.OnExportsChangingInternal;
this._providers = (providers != null) ? new ReadOnlyCollection <ExportProvider>((ExportProvider[])providers.Clone()) : EmptyProviders;
}
public CompositionContainer(ComposablePartCatalog catalog, bool isThreadSafe, params ExportProvider[] providers)
{
this._isThreadSafe = isThreadSafe;
this._partExportProvider = new ComposablePartExportProvider(isThreadSafe);
this._partExportProvider.SourceProvider = this;
// the count of all aggregrated providers = 1 (Part EP) + 1 (Catalog EP, if present) + count of given providers;
int reservedProvidersLength = 1 + ((catalog != null) ? 1 : 0);
int aggregatedProvidersLength = reservedProvidersLength + ((providers != null) ? providers.Length : 0);
if (aggregatedProvidersLength > 1)
{
ExportProvider[] aggregatedProviders = new ExportProvider[aggregatedProvidersLength];
// Add the parts provider
aggregatedProviders[0] = this._partExportProvider;
// Add the catalog provider
if (catalog != null)
{
this._catalogExportProvider = new CatalogExportProvider(catalog, isThreadSafe);
this._catalogExportProvider.SourceProvider = this;
aggregatedProviders[1] = this._catalogExportProvider;
}
// Add the rest of providers
if ((providers != null) && (providers.Length > 0))
{
Array.Copy(providers, 0, aggregatedProviders, reservedProvidersLength, providers.Length);
}
// Create the aggregating provider and if any of the aggregatedProviders is null the constructor will throw an ArgumentExeption
this._aggregatingExportProvider = new AggregateExportProvider(aggregatedProviders);
this._rootProvider = this._aggregatingExportProvider;
}
else
{
Assumes.IsTrue(aggregatedProvidersLength == 1);
this._rootProvider = this._partExportProvider;
}
this._rootProvider.ExportsChanged += this.OnExportsChangedInternal;
this._rootProvider.ExportsChanging += this.OnExportsChangingInternal;
this._providers = (providers != null) ? new ReadOnlyCollection <ExportProvider>((ExportProvider[])providers.Clone()) : EmptyProviders;
}
public CompositionContainer(ComposablePartCatalog catalog, bool isThreadSafe, params ExportProvider[] providers)
{
this._importEngine = new ImportEngine(this, isThreadSafe);
this._partExportProvider = new ComposablePartExportProvider(isThreadSafe);
this._partExportProvider.SourceProvider = this;
this._providers = new ReadOnlyCollection <ExportProvider>(providers != null ? (ExportProvider[])providers.Clone() : new ExportProvider[0]);
List <ExportProvider> providerList = new List <ExportProvider>();
providerList.Add(this._partExportProvider);
if (catalog != null)
{
this._catalogExportProvider = new CatalogExportProvider(catalog, isThreadSafe);
this._catalogExportProvider.SourceProvider = this;
providerList.Add(this._catalogExportProvider);
}
foreach (var provider in this._providers)
{
if (provider == null)
{
throw ExceptionBuilder.CreateContainsNullElement("providers");
}
providerList.Add(provider);
}
// we only build the aggregating provider if necessary - that is, if we have more than one provider to aggregate
if (providerList.Count > 1)
{
this._aggregatingExportProvider = new AggregateExportProvider(providerList);
this._rootProvider = this._aggregatingExportProvider;
}
else
{
Assumes.IsTrue(providerList.Count == 1);
this._rootProvider = providerList[0];
}
this._rootProvider.ExportsChanged += this.OnExportsChangedInternal;
this._rootProvider.ExportsChanging += this.OnExportsChangingInternal;
}
/// <summary>
/// Initializes a new instance of the <see cref="CompositionContainer"/> class
/// with the specified catalog and export providers.
/// </summary>
/// <param name="compositionSettings">
/// <see cref="CompositionOptions"/> enumeration with flags controlling the composition.
/// </param>
/// <param name="providers">
/// A <see cref="Array"/> of <see cref="ExportProvider"/> objects which provide
/// the <see cref="CompositionContainer"/> access to <see cref="Export"/> objects,
/// or <see langword="null"/> to set <see cref="Providers"/> to an empty
/// <see cref="ReadOnlyCollection{T}"/>.
/// </param>
/// <exception cref="ArgumentException">
/// <paramref name="providers"/> contains an element that is <see langword="null"/>.
/// </exception>
public CompositionContainer(ComposablePartCatalog catalog, CompositionOptions compositionOptions, params ExportProvider[] providers)
{
if (compositionOptions > (CompositionOptions.DisableSilentRejection | CompositionOptions.IsThreadSafe | CompositionOptions.ExportCompositionService))
{
throw new ArgumentOutOfRangeException("compositionOptions");
}
_compositionOptions = compositionOptions;
// We always create the mutable provider
_partExportProvider = new ComposablePartExportProvider(compositionOptions);
_partExportProvider.SourceProvider = this;
// Create the catalog export provider, only if necessary
if (catalog != null)
{
_catalogExportProvider = new CatalogExportProvider(catalog, compositionOptions);
_catalogExportProvider.SourceProvider = this;
}
// Set the local export provider
if (_catalogExportProvider != null)
{
_localExportProvider = new AggregateExportProvider(_partExportProvider, _catalogExportProvider);
_disposableLocalExportProvider = _localExportProvider as IDisposable;
}
else
{
_localExportProvider = _partExportProvider;
}
// Set the ancestor export provider, if ancestors are supplied
if ((providers != null) && (providers.Length > 0))
{
// Aggregate ancestors if and only if more than one passed
if (providers.Length > 1)
{
_ancestorExportProvider = new AggregateExportProvider(providers);
_disposableAncestorExportProvider = _ancestorExportProvider as IDisposable;
}
else
{
if (providers[0] == null)
{
throw ExceptionBuilder.CreateContainsNullElement("providers");
}
_ancestorExportProvider = providers[0];
}
}
// finally set the root provider
if (_ancestorExportProvider == null)
{
// if no ancestors are passed, the local and the root are the same
_rootProvider = _localExportProvider;
}
else
{
int exportProviderCount = 1 + ((catalog != null) ? 1 : 0) + ((providers != null) ? providers.Length : 0);
ExportProvider[] rootProviders = new ExportProvider[exportProviderCount];
rootProviders[0] = _partExportProvider;
int customProviderStartIndex = 1;
if (catalog != null)
{
rootProviders[1] = _catalogExportProvider;
customProviderStartIndex = 2;
}
if (providers != null)
{
for (int i = 0; i < providers.Length; i++)
{
rootProviders[customProviderStartIndex + i] = providers[i];
}
}
_rootProvider = new AggregateExportProvider(rootProviders);
_disposableRootProvider = _rootProvider as IDisposable;
}
//Insert Composition Service
if (compositionOptions.HasFlag(CompositionOptions.ExportCompositionService))
{
this.ComposeExportedValue <ICompositionService>(new CompositionServiceShim(this));
}
_rootProvider.ExportsChanged += OnExportsChangedInternal;
_rootProvider.ExportsChanging += OnExportsChangingInternal;
_providers = (providers != null) ? new ReadOnlyCollection <ExportProvider>((ExportProvider[])providers.Clone()) : EmptyProviders;
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!this._isDisposed)
{
ExportProvider rootProvider = null;
AggregateExportProvider aggregatingExportProvider = null;
ComposablePartExportProvider partExportProvider = null;
CatalogExportProvider catalogExportProvider = null;
ImportEngine importEngine = null;
lock (this._lock)
{
if (!this._isDisposed)
{
rootProvider = this._rootProvider;
this._rootProvider = null;
aggregatingExportProvider = this._aggregatingExportProvider;
this._aggregatingExportProvider = null;
partExportProvider = this._partExportProvider;
this._partExportProvider = null;
catalogExportProvider = this._catalogExportProvider;
this._catalogExportProvider = null;
importEngine = this._importEngine;
this._importEngine = null;
this._isDisposed = true;
}
}
if (rootProvider != null)
{
rootProvider.ExportsChanged -= this.OnExportsChangedInternal;
rootProvider.ExportsChanging -= this.OnExportsChangingInternal;
}
if (aggregatingExportProvider != null)
{
aggregatingExportProvider.Dispose();
}
if (catalogExportProvider != null)
{
catalogExportProvider.Dispose();
}
if (partExportProvider != null)
{
partExportProvider.Dispose();
}
if (importEngine != null)
{
importEngine.Dispose();
}
}
}
}
