protected override async Task OnAfterRenderAsync(bool firstRender)
{
if (firstRender)
{
// Register resize-handler to window
await WindowService.EventManager
.AddResizeHandlerAsync(WindowResizeHandler);
}
// Ensure that the dropdown isn't cut off
EnsureCorrectDropDownPosition();
if (_callbackId > -1)
{
// Ensure that callback is cleaned up
await ElementService.RemoveClickOutsideOfElementHandlerAsync(_callbackId);
_callbackId = -1;
}
if (IsActive)
{
// Register callback if user clicks outside of dropdown
_callbackId = await ElementService.AddClickOutsideOfElementHandlerAsync(
new[]
{
_targetReference.Current,
_contentReference.Current
},
() =>
{
_callbackId = -1;
IsActive = false;
IsActiveChanged.InvokeAsync(false); // Notify parent that dropdown closed
StateHasChanged();
});
}
}
protected override async Task OnAfterRenderAsync(bool firstRender)
{
if (_callbackId > -1)
{
// Ensure that callback is cleaned up
await ElementService.RemoveClickOutsideOfElementHandlerAsync(_callbackId);
_callbackId = -1;
}
if (EnableClickOutside &&
Context != null &&
Context.IsActive)
{
// Register callback if user clicks outside of dropdown
_callbackId = await ElementService.AddClickOutsideOfElementHandlerAsync(
new[] { _modalReference },
() =>
{
_callbackId = -1;
Context.Close();
});
}
}