/// <summary>
/// Returns context variables to be set for the given workflow state id.
/// </summary>
/// <param name="workflowStateId">Workflow state which determines the root media navigation state.</param>
/// <returns>Mapping of context variable keys to values.</returns>
protected static IDictionary <string, object> PrepareRootState(Guid workflowStateId)
{
IDictionary <string, object> result = new Dictionary <string, object>();
// The initial state ID determines the media model "part" to initialize: Browse local media, browse media library, audio, videos or images.
// The media model part determines the media navigation mode and the view contents to be set.
if (!_initializers.ContainsKey(workflowStateId))
{
return(result);
}
// Use the IMediaNavigationInitializer that is associated with our root workflow state.
IMediaNavigationInitializer initializer = _initializers[workflowStateId];
string mode;
NavigationData navigationData;
initializer.InitMediaNavigation(out mode, out navigationData);
result.Add(Consts.KEY_NAVIGATION_MODE, mode);
result.Add(Consts.KEY_NAVIGATION_DATA, navigationData);
return(result);
}
/// <summary>
/// Registers a new IMediaNavigationInitializer to add a new media navigation root state.
/// </summary>
/// <param name="initializer"></param>
public static void RegisterMediaNavigationInitializer(IMediaNavigationInitializer initializer)
{
_initializers[initializer.MediaNavigationRootState] = initializer;
}
/// <summary>
/// Registers a new IMediaNavigationInitializer to add a new media navigation root state.
/// </summary>
/// <param name="initializer"></param>
public static void RegisterMediaNavigationInitializer(IMediaNavigationInitializer initializer)
{
_initializers[initializer.MediaNavigationRootState] = initializer;
}
/// <summary>
/// Returns context variables to be set for the given workflow state id.
/// </summary>
/// <param name="workflowStateId">Workflow state which determines the root media navigation state.</param>
/// <returns>Mapping of context variable keys to values.</returns>
protected static IDictionary <string, object> PrepareRootState(Guid workflowStateId)
{
IDictionary <string, object> result = new Dictionary <string, object>();
// The initial state ID determines the media model "part" to initialize: Browse local media, browse media library, audio, videos or images.
// The media model part determines the media navigation mode and the view contents to be set.
NavigationData navigationData;
string mode;
if (_initializers.ContainsKey(workflowStateId))
{
// Use the IMediaNavigationInitializer that is associated with our root workflow state.
IMediaNavigationInitializer initializer = _initializers[workflowStateId];
initializer.InitMediaNavigation(out mode, out navigationData);
}
else
{
// If we were called with a supported root state, we should be either in state WF_STATE_ID_LOCAL_MEDIA_NAVIGATION_ROOT
// or WF_STATE_ID_MEDIA_BROWSE_NAVIGATION_ROOT here
if (workflowStateId != Consts.WF_STATE_ID_LOCAL_MEDIA_NAVIGATION_ROOT &&
workflowStateId != Consts.WF_STATE_ID_BROWSE_MEDIA_NAVIGATION_ROOT)
{
// Error case: We cannot handle the given state
ServiceRegistration.Get <ILogger>().Warn("MediaNavigationModel: Unknown root workflow state with ID '{0}', initializing local media navigation", workflowStateId);
// We simply use the local media mode as fallback for this case, so we go on
workflowStateId = Consts.WF_STATE_ID_LOCAL_MEDIA_NAVIGATION_ROOT;
}
mode = workflowStateId == Consts.WF_STATE_ID_LOCAL_MEDIA_NAVIGATION_ROOT ? MediaNavigationMode.BrowseLocalMedia :
MediaNavigationMode.BrowseMediaLibrary;
IEnumerable <Guid> skinDependentOptionalMIATypeIDs = GetMediaSkinOptionalMIATypes(mode);
AbstractItemsScreenData.PlayableItemCreatorDelegate picd = mi =>
{
if (mi.Aspects.ContainsKey(AudioAspect.ASPECT_ID))
{
return new AudioItem(mi)
{
Command = new MethodDelegateCommand(() => PlayItemsModel.CheckQueryPlayAction(mi))
}
}
;
if (mi.Aspects.ContainsKey(VideoAspect.ASPECT_ID))
{
return new VideoItem(mi)
{
Command = new MethodDelegateCommand(() => PlayItemsModel.CheckQueryPlayAction(mi))
}
}
;
if (mi.Aspects.ContainsKey(ImageAspect.ASPECT_ID))
{
return new ImageItem(mi)
{
Command = new MethodDelegateCommand(() => PlayItemsModel.CheckQueryPlayAction(mi))
}
}
;
return(null);
};
IEnumerable <Guid> necessaryMIATypeIDs = new Guid[]
{
ProviderResourceAspect.ASPECT_ID,
MediaAspect.ASPECT_ID,
};
IEnumerable <Guid> optionalMIATypeIDs = new Guid[]
{
AudioAspect.ASPECT_ID,
VideoAspect.ASPECT_ID,
ImageAspect.ASPECT_ID,
}.Union(skinDependentOptionalMIATypeIDs);
string viewName = workflowStateId == Consts.WF_STATE_ID_LOCAL_MEDIA_NAVIGATION_ROOT ?
Consts.RES_LOCAL_MEDIA_ROOT_VIEW_NAME : Consts.RES_BROWSE_MEDIA_ROOT_VIEW_NAME;
ViewSpecification rootViewSpecification = workflowStateId == Consts.WF_STATE_ID_LOCAL_MEDIA_NAVIGATION_ROOT ?
new AddedRemovableMediaViewSpecificationFacade(new LocalMediaRootProxyViewSpecification(viewName, necessaryMIATypeIDs, optionalMIATypeIDs)) :
new AddedRemovableMediaViewSpecificationFacade(new BrowseMediaRootProxyViewSpecification(viewName, necessaryMIATypeIDs, optionalMIATypeIDs));
// Dynamic screens remain null - browse media states don't provide dynamic filters
AbstractScreenData screenData = workflowStateId == Consts.WF_STATE_ID_LOCAL_MEDIA_NAVIGATION_ROOT ?
(AbstractScreenData) new LocalMediaNavigationScreenData(picd) : new BrowseMediaNavigationScreenData(picd);
Sorting.Sorting browseDefaultSorting = new BrowseDefaultSorting();
ICollection <Sorting.Sorting> availableSortings = new List <Sorting.Sorting>
{
browseDefaultSorting,
new SortByTitle(),
new SortByDate(),
// We could offer sortings here which are specific for one media item type but which will cope with all three item types (and sort items of the three types in a defined order)
};
navigationData = new NavigationData(null, viewName, workflowStateId,
workflowStateId, rootViewSpecification, screenData, null, browseDefaultSorting)
{
AvailableSortings = availableSortings
};
}
result.Add(Consts.KEY_NAVIGATION_MODE, mode);
result.Add(Consts.KEY_NAVIGATION_DATA, navigationData);
return(result);
}
