public async void Save(TodoItemViewModel editItem)
{
if (Elements.Contains(editItem) == false)
{
Elements.Add(editItem);
}
await Navigation.ReturnToMain();
}
public TodoItemViewModel CreateNew()
{
var newItem = new TodoItemViewModel() { ItemName = "New item:" };
NavigateTo(newItem);
return newItem;
}
public async void Save(TodoItemViewModel editItem)
{
if (Elements.Contains(editItem) == false)
{
Elements.Add(editItem);
}
await Navigation.ReturnToMain();
}
private TodoItemViewModel[] AddItems(TodoItemViewModel[] result)
{
foreach (var item in result)
{
Elements.Add(item);
}
return result;
}
public void Duplicate(TodoItemViewModel item)
{
var duplicate = CreateNew();
duplicate.ItemName = item.ItemName + " copy";
duplicate.IsChecked = item.IsChecked;
duplicate.Description = item.Description;
NavigateTo(duplicate);
}
public TodoItemViewModel CreateNew()
{
var newItem = new TodoItemViewModel()
{
ItemName = "New item:"
};
NavigateTo(newItem);
return(newItem);
}
internal void ScrollTo(TodoItemViewModel newItem)
{
ItemsList.ScrollTo(newItem, ScrollToPosition.End, true);
ItemsList.SelectedItem = newItem;
}
private void OnToggle(TodoItemViewModel item)
{
item.Toggle();
}
private async void OnDeletePrompt(TodoItemViewModel item)
{
var result = await MessageService.ShowYesNo("Confirm delete", "Do you really want to delete it?", "Yes", "No");
if (result)
{
ViewModel.Elements.Remove(item);
}
}
private async void OnShowOptionsCommand(TodoItemViewModel item)
{
if (MessageService == null)
{
return;
}
var selected = await MessageService.PickChoiceFrom(item.AsMenuOptions());
if (selected != null)
{
selected.Command.Execute(item);
}
}
private void SetupCommands(TodoItemViewModel item)
{
item.NavigateCommand = new Command(() => ViewModel.NavigateTo(item));
item.SaveCommand = new Command(() => ViewModel.Save(item) );
item.CancelEditCommand = new Command(() => ViewModel.CancelEdit(item));
item.ToggleCommand = new Command(() => OnToggle(item));
item.ShowOptionsCommand = new Command(() => OnShowOptionsCommand(item));
item.DeleteCommand = new Command(() => OnDeletePrompt(item));
item.DuplicateCommand = new Command(() => ViewModel.Duplicate(item));
item.EditCommand = new Command(() => ViewModel.Edit(item));
}
private void SetupCommands(TodoItemViewModel[] elements)
{
foreach (var item in elements)
{
SetupCommands(item);
}
}
public void Duplicate(TodoItemViewModel item)
{
var duplicate = CreateNew();
duplicate.ItemName = item.ItemName + " copy";
duplicate.IsChecked = item.IsChecked;
duplicate.Description = item.Description;
NavigateTo(duplicate);
}
public void NavigateTo(TodoItemViewModel item)
{
Navigation.NavigateToAsync(item);
}
public async void CancelEdit(TodoItemViewModel item)
{
await Navigation.ReturnToMain();
}
public void Edit(TodoItemViewModel item)
{
NavigateTo(item);
}
public async void CancelEdit(TodoItemViewModel item)
{
await Navigation.ReturnToMain();
}
public void Edit(TodoItemViewModel item)
{
NavigateTo(item);
}
public void NavigateTo(TodoItemViewModel item)
{
Navigation.NavigateToAsync(item);
}