/// <summary>
/// Adds the item.
/// </summary>
/// <param name="item">The item.</param>
public void AddItem(RadzenSelectBarItem item)
{
if (items.IndexOf(item) == -1)
{
items.Add(item);
StateHasChanged();
}
}
/// <summary>
/// Removes the item.
/// </summary>
/// <param name="item">The item.</param>
public void RemoveItem(RadzenSelectBarItem item)
{
if (items.Contains(item))
{
items.Remove(item);
if (!disposed)
{
try { InvokeAsync(StateHasChanged); } catch { }
}
}
}
/// <summary>
/// Determines whether the specified item is selected.
/// </summary>
/// <param name="item">The item.</param>
/// <returns><c>true</c> if the specified item is selected; otherwise, <c>false</c>.</returns>
protected bool IsSelected(RadzenSelectBarItem item)
{
if (Value != null)
{
if (Multiple)
{
return(((IEnumerable)Value).Cast <object>().Contains(item.Value));
}
else
{
return(object.Equals(Value, item.Value));
}
}
return(false);
}
/// <summary>
/// Selects the item.
/// </summary>
/// <param name="item">The item.</param>
protected async System.Threading.Tasks.Task SelectItem(RadzenSelectBarItem item)
{
if (Disabled)
{
return;
}
if (Multiple)
{
var type = typeof(TValue).IsGenericType ? typeof(TValue).GetGenericArguments()[0] : typeof(TValue);
var selectedValues = Value != null ? ((IEnumerable)Value).AsQueryable().Cast(type).AsEnumerable().ToList() : new List <dynamic>();
if (!selectedValues.Contains(item.Value))
{
selectedValues.Add(item.Value);
}
else
{
selectedValues.Remove(item.Value);
}
Value = (TValue)selectedValues.AsQueryable().Cast(type);
}
else
{
Value = (TValue)item.Value;
}
await ValueChanged.InvokeAsync(Value);
if (FieldIdentifier.FieldName != null)
{
EditContext?.NotifyFieldChanged(FieldIdentifier);
}
await Change.InvokeAsync(Value);
StateHasChanged();
}
ClassList ButtonClassList(RadzenSelectBarItem item) => ClassList.Create("rz-button rz-button-text-only")
.Add("rz-state-active", IsSelected(item))
.AddDisabled(Disabled);
