/// <summary>
/// Checkbox 组件选项状态改变时触发此方法
/// </summary>
/// <param name="item"></param>
/// <param name="v"></param>
private async Task OnStateChanged(SelectedItem item, bool v)
{
item.Active = v;
var typeValue = typeof(TValue);
if (typeValue == typeof(string))
{
CurrentValueAsString = string.Join(",", Items.Where(i => i.Active).Select(i => i.Value));
}
else if (typeValue.IsGenericType)
{
var t = typeValue.GenericTypeArguments;
if (Activator.CreateInstance(typeof(List <>).MakeGenericType(t)) is IList instance)
{
foreach (var sl in Items.Where(i => i.Active))
{
if (sl.Value.TryConvertTo(t[0], out var val))
{
instance.Add(val);
}
}
CurrentValue = (TValue)instance;
}
}
if (OnSelectedChanged != null)
{
await OnSelectedChanged.Invoke(Items, Value);
}
}
/// <summary>
/// Checkbox 组件选项状态改变时触发此方法
/// </summary>
/// <param name="item"></param>
/// <param name="v"></param>
protected async Task OnStateChanged(TModel item, bool v)
{
SetValue(item, v);
var typeValue = typeof(TValue);
if (typeValue == typeof(string))
{
CurrentValueAsString = string.Join(",", Items.Where(i => GetChecked(i)).Select(i => GetValue <object>(i)?.ToString() ?? ""));
}
else if (typeValue.IsGenericType)
{
var t = typeValue.GenericTypeArguments;
if (Activator.CreateInstance(typeof(List <>).MakeGenericType(t)) is IList instance)
{
foreach (var model in Items.Where(i => GetChecked(i)))
{
var val = GetValue <object>(model);
instance.Add(val);
}
CurrentValue = (TValue)instance;
}
}
if (OnSelectedChanged != null)
{
await OnSelectedChanged.Invoke(Items, item, Value);
}
}
internal void ChangeSelectedItems(HelperItem[] helperItem)
{
for (int i = 0; i < helperItem.Length; i++)
{
helperItem[i].Selected = true;
}
OnSelectedChanged?.Invoke(helperItem[0]);
SelectedItem = helperItem[0];
SelectedItems = helperItem;
}
private void SelectedChanged(bool?value)
{
if (value == Selected)
{
return;
}
Selected = value;
OnSelectedChanged?.Invoke(Selected);
Parent?.ReevaluateSelected();
TreeView.UpdateSelection(Item, Selected);
InvokeAsync(StateHasChangedIfNotDisposed);
}
private void SelectedAndIndeterminateChanged(bool newSelected, bool newIndeterminate)
{
if (disposed)
{
return;
}
if (newSelected == Selected && newIndeterminate == Indeterminate)
{
return;
}
Indeterminate = newIndeterminate;
Selected = newSelected;
OnSelectedChanged?.Invoke(Selected);
Parent?.ReevaluateSelected();
TreeView.UpdateSelection(Item, Selected, Indeterminate);
InvokeAsync(StateHasChangedIfNotDisposed);
}
/// <summary>
/// 点击选择框方法
/// </summary>
private async Task OnClick(SelectedItem item)
{
if (!IsDisabled)
{
if (typeof(TValue) == typeof(SelectedItem))
{
CurrentValue = (TValue)(object)item;
}
else
{
CurrentValueAsString = item.Value;
}
if (OnSelectedChanged != null)
{
await OnSelectedChanged.Invoke(new SelectedItem[] { item }, Value);
}
StateHasChanged();
}
}
private void RefreshSelectedBulidingData()
{
OnSelectedChanged.Invoke(this, EventArgs.Empty);
}
private void RefreshSelectedObjectType()
{
OnSelectedChanged?.Invoke(this, EventArgs.Empty);
}
