private async Task TriggerSelectedItemChanged()
{
if (OnSelectedItemsChanged != null)
{
await OnSelectedItemsChanged.Invoke(SelectedItems);
}
}
/// <summary>
/// 选中数据移动方法
/// </summary>
private async Task TransferItems(List <SelectedItem> source, List <SelectedItem> target)
{
if (!IsDisabled && Items != null)
{
var items = source.Where(i => i.Active).ToList();
source.RemoveAll(i => items.Contains(i));
target.AddRange(items);
LeftItems.ForEach(i =>
{
var item = Items.FirstOrDefault(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
if (item != null)
{
item.Active = false;
}
});
RightItems.ForEach(i =>
{
var item = Items.FirstOrDefault(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
if (item != null)
{
item.Active = true;
}
});
Value = default;
CurrentValueAsString = string.Join(",", RightItems.Select(i => i.Value));
if (OnSelectedItemsChanged != null)
{
await OnSelectedItemsChanged.Invoke(RightItems);
}
}
}
/// <summary>
///
/// </summary>
/// <returns></returns>
protected async Task OnStateChanged(CheckboxState state, SelectedItem item)
{
// trigger when transfer item clicked
item.Active = state == CheckboxState.Checked;
// set header
if (OnSelectedItemsChanged != null)
{
await OnSelectedItemsChanged.Invoke();
}
}
/// <summary>
/// 左侧头部复选框初始化值方法
/// </summary>
protected async Task OnHeaderCheck(CheckboxState state, SelectedItem item)
{
if (Items != null)
{
if (state == CheckboxState.Checked)
{
Items.ToList().ForEach(i => i.Active = true);
}
else
{
Items.ToList().ForEach(i => i.Active = false);
}
if (OnSelectedItemsChanged != null)
{
await OnSelectedItemsChanged.Invoke();
}
}
}
