/// <summary>
/// Enters a new media navigation context by modifying the list of available screens. This is used for
/// presenting the result of a filter, where the menu must be changed.
/// </summary>
/// <param name="subViewSpecification">Specification for the sub view to be shown in the new navigation context.</param>
/// <param name="currentMenuItemLabel">Current menu item label needed for distinction of available screens.</param>
/// <param name="navbarDisplayLabel">Display label to be shown in the navigation bar for the new navigation context.</param>
/// <returns>Newly created navigation data.</returns>
public NavigationData StackAutonomousNavigationContext(ViewSpecification subViewSpecification, string currentMenuItemLabel, string navbarDisplayLabel)
{
AbstractScreenData currentScreen = AvailableScreens.FirstOrDefault(screen => screen.MenuItemLabel == currentMenuItemLabel);
ICollection <AbstractScreenData> remainingScreens = new List <AbstractScreenData>(AvailableScreens.Where(screen => screen != currentScreen));
WorkflowState newState = WorkflowState.CreateTransientState(
"View: " + subViewSpecification.ViewDisplayName, subViewSpecification.ViewDisplayName,
false, null, false, WorkflowType.Workflow, null);
string nextScreenName;
AbstractScreenData nextScreen = null;
// Try to load the prefered next screen from settings.
if (LoadScreenHierarchy(CurrentScreenData.GetType().ToString(), out nextScreenName))
{
nextScreen = remainingScreens.FirstOrDefault(s => s.GetType().ToString() == nextScreenName);
}
// Default way: always take the first of the available screens.
if (nextScreen == null)
{
nextScreen = remainingScreens.First(s => s != currentScreen);
}
ScreenConfig nextScreenConfig;
LoadLayoutSettings(nextScreen.GetType().ToString(), out nextScreenConfig);
Sorting.Sorting nextSortingMode = AvailableSortings.FirstOrDefault(
sorting => sorting.GetType().ToString() == nextScreenConfig.Sorting && sorting.IsAvailable(nextScreen)) ?? _currentSorting;
Sorting.Sorting nextGroupingMode = String.IsNullOrEmpty(nextScreenConfig.Grouping) ? null : AvailableGroupings.FirstOrDefault(
grouping => grouping.GetType().ToString() == nextScreenConfig.Grouping && grouping.IsAvailable(nextScreen)) ?? _currentGrouping;
NavigationData newNavigationData = new NavigationData(this, subViewSpecification.ViewDisplayName,
newState.StateId, newState.StateId, subViewSpecification, nextScreen, remainingScreens,
nextSortingMode, nextGroupingMode)
{
LayoutType = nextScreenConfig.LayoutType, LayoutSize = nextScreenConfig.LayoutSize
};
PushNewNavigationWorkflowState(newState, navbarDisplayLabel, newNavigationData);
return(newNavigationData);
}
public virtual void InitMediaNavigation(MediaNavigationConfig config, out string mediaNavigationMode, out NavigationData navigationData)
{
PrepareAsync().Wait();
IFilterTree filterTree = _customFilterTree ?? (_rootRole.HasValue ? new RelationshipFilterTree(_rootRole.Value) : (IFilterTree) new SimpleFilterTree());
if (_filter != null)
{
filterTree.AddFilter(_filter);
}
//Default configuration
string viewName = _viewName;
AbstractScreenData nextScreen = null;
//Apply any custom configuration
if (config != null)
{
if (_availableScreens != null)
{
//Use the configured root screen to load the next screen from the hierarchy
//and remove it from the list of available screens
AbstractScreenData configRoot = config.RootScreenType != null?_availableScreens.FirstOrDefault(s => s.GetType() == config.RootScreenType) : null;
if (configRoot != null)
{
viewName = configRoot.GetType().ToString();
_availableScreens.Remove(configRoot);
}
//Use the configured default screen if there is no saved screen hierarchy
AbstractScreenData configDefault = config.DefaultScreenType != null?_availableScreens.FirstOrDefault(s => s.GetType() == config.DefaultScreenType) : null;
if (configDefault != null)
{
_defaultScreen = configDefault;
// If we want to force the default screen to be shown, set the next screen
// here to avoid loading it from the screen hierarchy below.
if (config.AlwaysUseDefaultScreen)
{
nextScreen = configDefault;
}
}
}
//Apply any additional filters
if (config.LinkedId.HasValue)
{
filterTree.AddLinkedId(config.LinkedId.Value, config.FilterPath);
}
if (config.Filter != null)
{
filterTree.AddFilter(config.Filter, config.FilterPath);
}
}
IEnumerable <Guid> optionalMIATypeIDs = MediaNavigationModel.GetMediaSkinOptionalMIATypes(MediaNavigationMode);
if (_optionalMias != null)
{
optionalMIATypeIDs = optionalMIATypeIDs.Union(_optionalMias).Except(_necessaryMias);
}
// Try to load the prefered next screen from settings if not already set.
if (nextScreen == null && NavigationData.LoadScreenHierarchy(viewName, out string nextScreenName))
{
// Support for browsing mode.
if (nextScreenName == Consts.USE_BROWSE_MODE)
{
SetBrowseMode(optionalMIATypeIDs);
}
if (_availableScreens != null)
{
nextScreen = _availableScreens.FirstOrDefault(s => s.GetType().ToString() == nextScreenName);
}
}
if (_applyUserFilter)
{
var userFilter = UserHelper.GetUserRestrictionFilter(_necessaryMias.ToList());
if (userFilter != null)
{
filterTree.AddFilter(userFilter);
}
}
// Prefer custom view specification.
ViewSpecification rootViewSpecification = _customRootViewSpecification ??
// Always use the default view name for the root view specification, not any custom name that may
// have been specified in a navigation config, otherwise toggling browse mode won't work correctly.
// To switch to browse mode we update the root screen hierarchy to point to the browse screen and
// then navigate to the root wf state. The name of the root screen hierarchy is determined by the
// name specified here so it should always point to the actual root view name.
new MediaLibraryQueryViewSpecification(_viewName, filterTree, _necessaryMias, optionalMIATypeIDs, true)
{
MaxNumItems = Consts.MAX_NUM_ITEMS_VISIBLE,
};
if (nextScreen == null)
{
nextScreen = _defaultScreen;
}
ScreenConfig nextScreenConfig;
NavigationData.LoadLayoutSettings(nextScreen.GetType().ToString(), out nextScreenConfig);
Sorting.Sorting nextSortingMode = _availableSortings.FirstOrDefault(sorting => sorting.GetType().ToString() == nextScreenConfig.Sorting) ?? _defaultSorting;
Sorting.Sorting nextGroupingMode = _availableGroupings == null || String.IsNullOrEmpty(nextScreenConfig.Grouping) ? null : _availableGroupings.FirstOrDefault(grouping => grouping.GetType().ToString() == nextScreenConfig.Grouping) ?? _defaultGrouping;
navigationData = new NavigationData(null, viewName, MediaNavigationRootState,
MediaNavigationRootState, rootViewSpecification, nextScreen, _availableScreens, nextSortingMode, nextGroupingMode)
{
AvailableSortings = _availableSortings,
AvailableGroupings = _availableGroupings,
LayoutType = nextScreenConfig.LayoutType,
LayoutSize = nextScreenConfig.LayoutSize
};
mediaNavigationMode = MediaNavigationMode;
}
public virtual void InitMediaNavigation(out string mediaNavigationMode, out NavigationData navigationData)
{
Prepare();
string nextScreenName;
AbstractScreenData nextScreen = null;
// Try to load the prefered next screen from settings.
if (NavigationData.LoadScreenHierarchy(_viewName, out nextScreenName))
{
// Support for browsing mode.
if (nextScreenName == Consts.USE_BROWSE_MODE)
{
SetBrowseMode();
}
if (_availableScreens != null)
{
nextScreen = _availableScreens.FirstOrDefault(s => s.GetType().ToString() == nextScreenName);
}
}
IEnumerable <Guid> optionalMIATypeIDs = MediaNavigationModel.GetMediaSkinOptionalMIATypes(MediaNavigationMode);
if (_optionalMias != null)
{
optionalMIATypeIDs = optionalMIATypeIDs.Union(_optionalMias);
optionalMIATypeIDs = optionalMIATypeIDs.Except(_necessaryMias);
}
IFilterTree filterTree = _rootRole.HasValue ? new RelationshipFilterTree(_rootRole.Value) : (IFilterTree) new SimpleFilterTree();
filterTree.AddFilter(_filter);
// Prefer custom view specification.
ViewSpecification rootViewSpecification = _customRootViewSpecification ??
new MediaLibraryQueryViewSpecification(_viewName, filterTree, _necessaryMias, optionalMIATypeIDs, true)
{
MaxNumItems = Consts.MAX_NUM_ITEMS_VISIBLE
};
if (nextScreen == null)
{
nextScreen = _defaultScreen;
}
ScreenConfig nextScreenConfig;
NavigationData.LoadLayoutSettings(nextScreen.GetType().ToString(), out nextScreenConfig);
Sorting.Sorting nextSortingMode = _availableSortings.FirstOrDefault(sorting => sorting.GetType().ToString() == nextScreenConfig.Sorting) ?? _defaultSorting;
Sorting.Sorting nextGroupingMode = _availableGroupings == null || String.IsNullOrEmpty(nextScreenConfig.Grouping) ? null : _availableGroupings.FirstOrDefault(grouping => grouping.GetType().ToString() == nextScreenConfig.Grouping) ?? _defaultGrouping;
navigationData = new NavigationData(null, _viewName, MediaNavigationRootState,
MediaNavigationRootState, rootViewSpecification, nextScreen, _availableScreens, nextSortingMode, nextGroupingMode)
{
AvailableSortings = _availableSortings,
AvailableGroupings = _availableGroupings,
LayoutType = nextScreenConfig.LayoutType,
LayoutSize = nextScreenConfig.LayoutSize
};
mediaNavigationMode = MediaNavigationMode;
}