/// <summary>
/// Initializes the modules, imports all the types that are exported from the plugins and passes them to the <see cref="MainWindowViewModel"/>
/// </summary>
protected override void InitializeModules()
{
try
{
base.InitializeModules();
}
catch (ModularityException e)
{
//Error during initialization of some plugin
//Be verbose so that the user could spot the broken plugin and remove it, for example ..
var dialogService = Container.Resolve <IDialogService>();
var dialogParams = new DialogParameters
{
{ MessageDialogParameterNames.Message, e.Message },
{ MessageDialogParameterNames.Title, "Error" }
};
dialogService.ShowDialog("MessageDialogView", dialogParams, (dialogResult) =>
{
});
}
if (!loadedPlugins.Any(x => x.Assembly.FullName.StartsWith("PaunPacker.Plugins.DefaultImplementationsProviderPlugin,", StringComparison.InvariantCulture)))
{
//The default implementations plugin was not loaded
var dialogService = Container.Resolve <IDialogService>();
var dialogParams = new DialogParameters
{
{ MessageDialogParameterNames.Message, "Critical error was encountered, the PaunPacker could no run without the plugin with default implementations !" },
{ MessageDialogParameterNames.Title, "Error" }
};
dialogService.ShowDialog("MessageDialogView", dialogParams, (dialogResult) =>
{
});
Shutdown(-1);
}
//Assign modules to Shell's ViewModel properly ..
var mainWindowVM = (MainWindowViewModel)MainWindow.DataContext;
//Get All instances from mefContainer
//The reason why only mefContainer is considered here is because unityContainer should be used mainly for
//factoryRegistrations and dependencies used by these factories are not registered yet
//On the other hand, MEF is used for easy&fast way to export dependency-less plugins so it is safe to instantiate them at any moment
var imageSorters = mefContainer.GetExports <IImageSorter>();
var placementAlgorithms = mefContainer.GetExports <IPlacementAlgorithm>();
var minimumBoundingBoxFinders = mefContainer.GetExports <IMinimumBoundingBoxFinder>();
var metadataWriters = mefContainer.GetExports <IMetadataWriter>();
var imageProcessors = mefContainer.GetExports <IImageProcessor>();
//Get All exported types (from both mefContainer & unityContainer)
var imageSorterTypes = imageSorters.Select(x => x.GetType())
.Concat(FilterUnityExportedTypesByTypeAndAttribute <IImageSorter>(UnityContainer));
var placementAlgorithmTypes = placementAlgorithms.Select(x => x.GetType())
.Concat(FilterUnityExportedTypesByTypeAndAttribute <IPlacementAlgorithm>(UnityContainer));
var minimumBoundingBoxFinderTypes = minimumBoundingBoxFinders.Select(x => x.GetType())
.Concat(FilterUnityExportedTypesByTypeAndAttribute <IMinimumBoundingBoxFinder>(UnityContainer));
var metadataWriterTypes = metadataWriters.Select(x => x.GetType())
.Concat(FilterUnityExportedTypesByTypeAndAttribute <IMetadataWriter>(UnityContainer));
var imageProcessorTypes = imageProcessors.Select(x => x.GetType())
.Concat(FilterUnityExportedTypesByTypeAndAttribute <IImageProcessor>(UnityContainer));
mainWindowVM.LoadedPlugins = loadedPlugins
.Concat(mefContainer.GetExports <IMetadataWriter>().Select(x => x.GetType()))
.Concat(mefContainer.GetExports <IImageProcessor>().Select(x => x.GetType()))
.Concat(mefContainer.GetExports <IImageSorter>().Select(x => x.GetType()))
.Concat(mefContainer.GetExports <IPlacementAlgorithm>().Select(x => x.GetType()))
.Concat(mefContainer.GetExports <IMinimumBoundingBoxFinder>().Select(x => x.GetType()))
.Distinct();
//ExportedTypeMetadataAttribute can be either placed directly on the exported type or on the Plugin Entry point type
//Obtain all the ExportedTypeMetadataAttributes that are on the Plugin entry points instead of on the actual class being exported
var exportedMetadataAttributesOnPlugins = mainWindowVM.LoadedPlugins
.Select(x => x.GetCustomAttributes <ExportedTypeMetadataAttribute>());
var exportedTypeNameToExportedTypeAttributeMapping = new Dictionary <string, ExportedTypeMetadataAttribute>();
foreach (var plugin in exportedMetadataAttributesOnPlugins)
{
foreach (var exportedType in plugin)
{
exportedTypeNameToExportedTypeAttributeMapping[exportedType.ExportedType.FullName] = exportedType;
}
}
mainWindowVM.ImageSorterVMs = imageSorterTypes
.Distinct()
.Select(x => CreateExportedTypeViewModel(x, exportedTypeNameToExportedTypeAttributeMapping));
mainWindowVM.PlacementAlgorithmVMs = placementAlgorithmTypes
.Distinct()
.Select(x => CreateExportedTypeViewModel(x, exportedTypeNameToExportedTypeAttributeMapping));
mainWindowVM.MinimumBoundingBoxFinderVMs = minimumBoundingBoxFinderTypes
.Distinct()
.Select(x => CreateExportedTypeViewModel(x, exportedTypeNameToExportedTypeAttributeMapping));
mainWindowVM.MetadataWriterVMs = metadataWriterTypes
.Distinct()
.Select(x => CreateExportedTypeViewModel(x, exportedTypeNameToExportedTypeAttributeMapping));
mainWindowVM.ImageProcessorVMs = imageProcessorTypes
.Distinct()
.Select(x => CreateExportedTypeViewModel(x, exportedTypeNameToExportedTypeAttributeMapping));
//The event about modules being loaded is published before view manipulation (because modules could register view in event handler of the modules loaded event)
var eventAggregator = UnityContainer.Resolve <IEventAggregator>();
eventAggregator.GetEvent <ModulesLoadedEvent>().Publish(new ModulesLoadedPayload(
imageSorterTypes
.Concat(placementAlgorithmTypes)
.Concat(minimumBoundingBoxFinderTypes)
.Concat(metadataWriterTypes)
.Concat(imageProcessorTypes)
));
var regionManager = Container.Resolve <IRegionManager>();
//Get views for ImageSorters
var collection = regionManager.Regions[RegionNames.ImageSortersRegion];
foreach (var imageSorter in mainWindowVM.ImageSorterVMs)
{
var view = UnityContainer.Resolve <System.Windows.Controls.UserControl>(PluginViewWiring.GetViewName(imageSorter.ExportedType));
if (view != null)
{
regionManager.Regions[RegionNames.ImageSortersRegion].Add(view, PluginViewWiring.GetViewName(imageSorter.ExportedType));
collection.Deactivate(view);
}
}
//Get views for PlacementAlgorithms, register them and hide all of them
collection = regionManager.Regions[RegionNames.PlacementAlgorithmsRegion];
foreach (var placementAlgorithm in mainWindowVM.PlacementAlgorithmVMs)
{
var view = UnityContainer.Resolve <System.Windows.Controls.UserControl>(PluginViewWiring.GetViewName(placementAlgorithm.ExportedType));
if (view != null)
{
regionManager.Regions[RegionNames.PlacementAlgorithmsRegion].Add(view, PluginViewWiring.GetViewName(placementAlgorithm.ExportedType));
collection.Deactivate(view);
}
}
//Get views for MinimumBoundingBoxFinders
collection = regionManager.Regions[RegionNames.MinimumBoundingBoxFinderRegion];
foreach (var minBoundingBoxFinder in mainWindowVM.MinimumBoundingBoxFinderVMs)
{
var view = UnityContainer.Resolve <System.Windows.Controls.UserControl>(PluginViewWiring.GetViewName(minBoundingBoxFinder.ExportedType));
if (view != null)
{
regionManager.Regions[RegionNames.MinimumBoundingBoxFinderRegion].Add(view, PluginViewWiring.GetViewName(minBoundingBoxFinder.ExportedType));
collection.Deactivate(view);
}
}
//Get views for MetadataWriters
collection = regionManager.Regions[RegionNames.MetadataWritersRegion];
foreach (var metadataWriter in mainWindowVM.MetadataWriterVMs)
{
var view = UnityContainer.Resolve <System.Windows.Controls.UserControl>(PluginViewWiring.GetViewName(metadataWriter.ExportedType));
if (view != null)
{
regionManager.Regions[RegionNames.MetadataWritersRegion].Add(view, PluginViewWiring.GetViewName(metadataWriter.ExportedType));
collection.Deactivate(view);
}
}
//Get views for ImageProcessors
collection = regionManager.Regions[RegionNames.ImageProcessorsRegion];
foreach (var imageProcessor in mainWindowVM.ImageProcessorVMs)
{
var view = UnityContainer.Resolve <System.Windows.Controls.UserControl>(PluginViewWiring.GetViewName(imageProcessor.ExportedType));
if (view != null)
{
regionManager.Regions[RegionNames.ImageProcessorsRegion].Add(view, PluginViewWiring.GetViewName(imageProcessor.ExportedType));
collection.Deactivate(view);
}
}
mainWindowVM.Initialize();
}
