public void CheckForUngroup(DnDContainer <TListItem, TItem, TGroup> containerToCheck = null, int indexInParentContainer = -1)
{
var overrideDebug = false;
if (DnDState.ShowDebugInfo || overrideDebug)
{
Console.WriteLine($"Checking for ungroup for {Address}");
}
if (containerToCheck is null)
{
containerToCheck = (DnDContainer <TListItem, TItem, TGroup>) this;
}
if (containerToCheck == DnDState.BaseContainer)
{
if (DnDState.ShowDebugInfo || overrideDebug)
{
Console.WriteLine("The container being checked for ungroup is the Base Container and will not be ungrouped.");
}
return;
}
if (containerToCheck.List.Count() > 1)
{
if (DnDState.ShowDebugInfo || overrideDebug)
{
Console.WriteLine("The container has more than 1 element and should not be ungrouped.");
}
return;
}
if (DnDState.ShowDebugInfo || overrideDebug)
{
Console.WriteLine($"Passed in indexInParentContainer: {indexInParentContainer}");
Console.WriteLine($"containerToCheck's address: {containerToCheck.Address}");
}
if (indexInParentContainer < 0 && !int.TryParse(containerToCheck.Address.Split('.').Last(), out indexInParentContainer))
{
Console.Error.WriteLine("Could not determine the container's index in the parent container during ungroup.");
}
var parent = containerToCheck.Parent;
if (parent is null)
{
Console.Error.WriteLine("The parent container could not be determined.");
return;
}
// Remove the item from the group and place it at the group's original index
if (DnDState.ShowDebugInfo || overrideDebug)
{
Console.WriteLine($"Removing item at index {indexInParentContainer} from {parent.Address} due to ungroup");
}
parent.List.RemoveAt(indexInParentContainer);
if (containerToCheck.List.Count() == 1)
{
var item = containerToCheck.List[0];
parent.List.Insert(indexInParentContainer, item);
}
}
public async Task SetPayload(DnDContainer <TListItem, TItem, TGroup> fromContainer, int index, string address = null, bool isContainer = false)
{
var overrideDebug = false;
if (DnDState.ShowDebugInfo || overrideDebug)
{
Console.WriteLine($"Setting payload to {(string.IsNullOrWhiteSpace(address) ? "{empty}" : address)}");
}
await DnDState.SetPayload(fromContainer, index, address, isContainer);
}
public async Task SetPayload(DnDContainer <TListItem, TItem, TGroup> fromContainer, int index, string address = null, bool isContainer = false)
{
var overrideDebug = false;
if (ShowDebugInfo || overrideDebug)
{
Console.WriteLine($"Setting payload to {(string.IsNullOrWhiteSpace(address) ? "{empty}" : address)}");
}
Payload.FromContainer = fromContainer;
Payload.FromIndex = index;
Payload.Address = address;
Payload.IsContainer = isContainer;
await BaseContainer.NotifyStateChanged();
}
protected async Task HandleDragStart(DragEventArgs e, int index, DnDContainer <TListItem, TItem, TGroup> fromContainer, string address = null, bool isContainer = false)
{
var overrideDebug = false;
if (DnDState.ShowDebugInfo || overrideDebug)
{
Console.WriteLine($"Drag started for {address}");
}
if (index >= fromContainer.List.Count())
{
Console.WriteLine("Item index was out of range"); return;
}
// Pause before setting the payload to allow the Drag event to register in the browser for the default action of picking up the item.
await Task.Delay(20);
await SetPayload(fromContainer, index, address, isContainer);
DnDState.ShowDropAtEnd = true;
}