/// <summary> Returns an enumerable of all registered view references. </summary>
/// <returns>Enumerable of all registered view references</returns>
/// <seealso cref="IViewReference"/>
public IEnumerable <IViewReference> GetViewReferences()
{
for (int i = -1; ++i != iRegisteredDataViews.Count;)
{
DataViewContribution dataViewContribution = iRegisteredDataViews[i];
yield return(new ViewReferenceImpl(dataViewContribution.DataViewId, dataViewContribution.DataViewLabel));
}
}
/// <inheritdoc />
protected override void OnInitialize()
{
IConfigurationElement[] configurationElements = ExtensionService.Instance.GetConfigurationElements(DataViewExtensionPointId);
if (configurationElements.Length == 0)
{
_log.Warning("No data view has been contributed by any extension point!");
return;
}
_log.Debug($"{configurationElements.Length} data view contributions has been found");
for (int i = -1; ++i != configurationElements.Length;)
{
IConfigurationElement configurationElement = configurationElements[i];
string id = configurationElement["id"];
string cls = configurationElement["class"];
string label = configurationElement["label"];
if (string.IsNullOrEmpty(label))
{
label = id;
}
_log.Debug($"Registering contribution {{id: '{id}', cls: '{cls}', label: '{label}'}}");
if (string.IsNullOrWhiteSpace(id))
{
_log.Error("Id attribute of data view extension contribution is null or empty!");
continue;
}
if (string.IsNullOrWhiteSpace(cls))
{
_log.Error($"Class attribute of data view extension contribution is null or empty!. Contribution id: '{id}'");
continue;
}
IBundle providingBundle = ExtensionService.Instance.GetProvidingBundle(configurationElement);
try {
Type dataViewType = TypeLoader.TypeForName(providingBundle, cls);
// NLS support
label = NLS.Localize(label, dataViewType);
DataViewContribution dataViewContribution = new DataViewContribution {
DataViewId = id,
DataViewType = dataViewType,
DataViewLabel = label
};
iRegisteredDataViews.Add(dataViewContribution);
_log.Info($"Data view contribution '{id}' registered.");
} catch (Exception ex) {
_log.Error($"Error loading type '{cls}'.", ex);
}
}
}
/// <summary>
/// Returns the instance of <see cref="IDataView"/> that matches the given <typeparamref name="TDataView"/> type.
/// If the type is not known by the registry, NULL is returned. If an instance of the data view has already been created, the existing one is
/// returned. There won't be more than one instance of a data view.
/// </summary>
/// <typeparam name="TDataView">Type of data view to get</typeparam>
/// <returns>Instance of <see cref="IDataView"/> or NULL</returns>
public TDataView GetDataView <TDataView>() where TDataView : class, IDataView
{
Type dataViewType = typeof(TDataView);
DataViewContribution dataViewContribution = iRegisteredDataViews.FirstOrDefault(entry => entry.DataViewType == dataViewType);
if (dataViewContribution == null)
{
return(null);
}
return(GetOrCreateDataView <TDataView>(dataViewType));
}
/// <summary>
/// Returns the instance of <see cref="IDataView"/> with the given <paramref name="dataViewId"/> from the registry.
/// If the id is not known by the registry, NULL is returned. If an instance of the data view has already been created, the existing one is
/// returned. There won't be more than one instance of a data view.
/// </summary>
/// <param name="dataViewId">Id of the data view to get</param>
/// <returns>Instance of <see cref="IDataView"/> or NULL</returns>
public IDataView GetDataView(string dataViewId)
{
DataViewContribution dataViewContribution = iRegisteredDataViews.FirstOrDefault(entry => entry.DataViewId == dataViewId);
if (dataViewContribution == null)
{
return(null);
}
Type dataViewType = dataViewContribution.DataViewType;
return(GetOrCreateDataView <IDataView>(dataViewType));
}
