protected ComicNavigationItemGridViewModel(
IMainPageContent parent,
MainViewModel appViewModel,
NavigationTag navigationTag,
ComicCollectionSortSelector initialSort
) : base(parent, appViewModel)
{
// Note: in the future, we may want to store this to remove the event handler
switch (navigationTag)
{
case NavigationTag.Comics:
throw new ProgrammerError("Cannot make of navigation item view model for work items");
case NavigationTag.Playlist:
this.collections = this.MainViewModel.Playlists;
this.collections.SetSort(initialSort);
break;
default:
this.collections = this.MainViewModel.SortedComicCollectionsFor(navigationTag, initialSort);
break;
}
this.collections.CollectionsChanged += this.Collections_CollectionsChanged;
}
public ComicNavigationItemPageNavigationArguments(
MainViewModel mainViewModel,
NavigationTag navigationTag,
ComicNavigationItem comicItem,
ComicItemGridViewModelProperties?properties = null
)
{
this.MainViewModel = mainViewModel;
this.NavigationTag = navigationTag;
this.ComicItem = comicItem;
this.Properties = properties;
}
public static ComicNavigationItemGridViewModel ForViewModel(
IMainPageContent parent,
MainViewModel mainViewModel,
NavigationTag navigationTag,
ComicCollectionSortSelector initialSort,
ComicItemGridState?savedState = null
)
{
var viewModel = new ComicNavigationItemGridViewModel(parent, mainViewModel, navigationTag, initialSort);
if (savedState?.LastModified is { } lastModified&& lastModified == mainViewModel.LastModified)
{
viewModel.SetComicItems(savedState.Items);
}
internal void AddTag(int xx, int yy)
{
var pos = GetPosition(xx, yy);
var task = new Task(async() =>
{
var tag = new NavigationTag(
deviceResources,
loader,
GlobalRotator,
pos);
await tag.CreateDeviceDependentResourcesAsync();
tags.Add(tag);
});
task.Start();
}
public ComicRootPageNavigationArguments(MainViewModel mainViewModel, NavigationTag navigationTag)
{
this.MainViewModel = mainViewModel;
this.NavigationTag = navigationTag;
}