/// <summary>
/// Decides whether given part satisfies a filter.
/// </summary>
/// <param name="part"><see cref="ComposablePartDefinition"/> being filtered.</param>
/// <returns>True if a given <see cref="ComposablePartDefinition"/> satisfies the filter.
/// False otherwise.</returns>
public bool Filter(ComposablePartDefinition part)
{
// Fetch all metadata
Dictionary <string, object> metadata = new Dictionary <string, object>(StringComparer.InvariantCultureIgnoreCase);
foreach (var md in part.Metadata)
{
metadata.Add(md.Key, md.Value);
}
var additionalMetadata = from ed in part.ExportDefinitions
from md in ed.Metadata
select md;
foreach (var md in additionalMetadata)
{
if (!metadata.ContainsKey(md.Key))
{
metadata.Add(md.Key, md.Value);
}
}
// Fetch "Scope"
var key = "Scope";
if (metadata.ContainsKey(key))
{
PartCreationScope scope = PartCreationScope.Default;
Enum.TryParse(metadata[key].ToString(), out scope);
return(scope == _partCreationScope);
}
else if (_partCreationScope == PartCreationScope.Default)
{
return(true);
}
return(false);
}
/// <summary>
/// Initializes a new instance of the <see cref="PartCreationScopeAttribute"/> class.
/// </summary>
/// <param name="scope">The part's scope.</param>
public PartCreationScopeAttribute(PartCreationScope scope)
{
Scope = scope;
}
/// <summary>
/// Initializes a new instance of the <see cref="HasPartCreationScope"/> class.
/// </summary>
/// <param name="_partCreationScope">The part creation scope.</param>
public HasPartCreationScope(PartCreationScope _partCreationScope)
{
this._partCreationScope = _partCreationScope;
}
/// <summary>
/// Initializes a new instance of the <see cref="PartCreationScopeAttribute"/> class.
/// </summary>
/// <param name="scope">The part's scope.</param>
public PartCreationScopeAttribute(PartCreationScope scope)
{
Scope = scope;
}
/// <summary>
/// Initializes a new instance of the <see cref="HasPartCreationScope"/> class.
/// </summary>
/// <param name="partCreationScope">The part creation scope.</param>
public HasPartCreationScope(PartCreationScope partCreationScope)
{
this.partCreationScope = partCreationScope;
}
/// <summary>
/// Initializes a new instance of the <see cref="HasPartCreationScope"/> class.
/// </summary>
/// <param name="partCreationScope">The part creation scope.</param>
public WebFiltering(PartCreationScope partCreationScope)
{
_partCreationScope = partCreationScope;
}
/// <summary>
/// Initializes a new instance of the <see cref="HasPartCreationScope"/> class.
/// </summary>
/// <param name="_partCreationScope">The part creation scope.</param>
public HasPartCreationScope(PartCreationScope _partCreationScope)
{
this._partCreationScope = _partCreationScope;
}