/// <summary>
/// Shows the dialog on the next render after a show action. Also on the next render after the dialog is initiated each
/// embedded Material.Blazor component is initiated here.
/// </summary>
/// <param name="firstRender"></param>
/// <returns></returns>
protected override async Task OnAfterRenderAsync(bool firstRender)
{
await base.OnAfterRenderAsync(firstRender);
if (AfterRenderShowAction)
{
try
{
AfterRenderShowAction = false;
Tcs.SetResult(await JsRuntime.InvokeAsync <string>("material_blazor.dialog.show", DialogElem, ObjectReference, EscapeKeyAction, ScrimClickAction));
IsOpen = false;
StateHasChanged();
}
catch
{
Tcs?.SetCanceled();
}
}
else if (AfterDialogInitialization)
{
AfterDialogInitialization = false;
foreach (var child in LayoutChildren)
{
child.RequestInstantiation();
}
LayoutChildren.Clear();
hasInstantiated = true;
StateHasChanged();
}
}
/// <summary>
/// Shows the dialog. This first renders the Blazor markup and then allows
/// Material Theme to open the dialog, subsequently intiating all embedded Blazor components.
/// </summary>
/// <returns>The action string resulting form dialog closure</returns>
public async Task <string> ShowAsync()
{
if (IsOpen)
{
throw new InvalidOperationException("Cannot show MBDialog that is already open");
}
else
{
LayoutChildren.Clear();
Key = Utilities.GenerateUniqueElementName();
IsOpen = true;
AfterRenderShowAction = true;
StateHasChanged();
Tcs = new TaskCompletionSource <string>();
var ret = await Tcs.Task;
hasInstantiated = false;
return(ret);
}
}
