/// <summary>
/// Creates a view for the specified extension point and GUI toolkit.
/// </summary>
/// <param name="extensionPoint">The view extension point.</param>
/// <param name="toolkitId">The identifier of the desired GUI toolkit.</param>
/// <returns>A new instance of a view extension for the specified extension point.</returns>
/// <exception cref="NotSupportedException">Thrown if a view extension matching the specified GUI toolkit does not exist.</exception>
public static IView CreateView(IExtensionPoint extensionPoint, string toolkitId)
{
// create an attribute representing the GUI toolkitID
GuiToolkitAttribute toolkitAttr = new GuiToolkitAttribute(toolkitId);
// create an extension that is tagged with the same toolkit
return((IView)extensionPoint.CreateExtension(new AttributeExtensionFilter(toolkitAttr)));
}
/// <summary>
/// Creates a view for the specified extension point and GUI toolkit.
/// </summary>
/// <param name="extensionPoint">The view extension point.</param>
/// <param name="toolkitID">The desired GUI toolkit.</param>
/// <returns>The view object that was created.</returns>
/// <exception cref="NotSupportedException">A view extension matching the specified GUI toolkit does not exist.</exception>
public static IView CreateView(IExtensionPoint extensionPoint, string toolkitID)
{
// create an attribute representing the GUI toolkitID
GuiToolkitAttribute toolkitAttr = new GuiToolkitAttribute(toolkitID);
// create an extension that is tagged with the same toolkit
return (IView)extensionPoint.CreateExtension(new AttributeExtensionFilter(toolkitAttr));
}
/// <summary>
/// Obtains an instance of the service that implements the specified contract.
/// </summary>
/// <returns></returns>
public object GetService(Type serviceContract)
{
lock (_syncLock)
{
// instantiate service object
object service = _serviceExtensionPoint.CreateExtension(new TypeExtensionFilter(serviceContract));
// note: _proxyGenerator does internal caching based on service contract
// so subsequent calls based on the same contract will be fast
var aopChain = new AopInterceptorChain(_interceptors);
return(_proxyGenerator.CreateInterfaceProxyWithTarget(serviceContract, service, aopChain));
}
}
