public async Task ShowCreatePlaylistDialogAsync()
{
var arguments = new TextInputDialogNavigationArguments(
properties: TextInputDialogProperties.ForNewItem("Playlist name"),
initialValue: this.MainViewModel.GetProposedPlaylistName(),
asyncAction: name => this.MainViewModel.CreatePlaylistAsync(name),
validate: ValidatePlaylistName
);
_ = await new PagedContentDialog {
Title = $"Create playlist"
}.NavigateAndShowAsync <
TextInputDialogContent, TextInputDialogNavigationArguments
>(arguments);
ValidateResult ValidatePlaylistName(string name)
{
if (this.MainViewModel.Playlists.ContainsKey(name))
{
return("A playlist with this name already exists.");
}
return(ValidateResult.Ok());
}
}
public TextInputDialogNavigationArguments(
TextInputDialogProperties properties,
string initialValue,
Func <string, Task> asyncAction,
Func <string, ValidateResult>?validate = null
)
{
this.Properties = properties;
this.InitialValue = initialValue;
this.AsyncAction = asyncAction;
this.Validate = validate;
}
public async Task ShowEditNavigationItemDialogAsync(ComicNavigationItem item)
{
if (this.ViewModel is not ComicNavigationItemGridViewModel vm)
{
throw new ProgrammerError($"{nameof(this.ShowEditNavigationItemDialogAsync)} should not be called with a work item view model");
}
var helper = new EditNavigationItemDialogViewModel(vm, item.Title);
_ = await new PagedContentDialog {
Title = $"{vm.NavigationTag.Describe(capitalized: true)}: {item.Title}"
}
.NavigateAndShowAsync <TextInputDialogContent, TextInputDialogNavigationArguments>(
new(
properties: TextInputDialogProperties.ForSavingChanges("Name"),
initialValue: item.Title,
asyncAction: helper.SaveAsync,
validate: helper.GetItemTitleInvalidReason
)
);
}