private async Task StartReactApplicationAsync(ReactInstanceManager reactInstanceManager, string moduleName, JObject initialProps)
{
// This is called under the dispatcher associated with the view.
DispatcherHelpers.AssertOnDispatcher(this);
if (_reactInstanceManager != null)
{
throw new InvalidOperationException("This root view has already been attached to an instance manager.");
}
_reactInstanceManager = reactInstanceManager;
_jsModuleName = moduleName;
_initialProps = initialProps;
var getReactContextTaskTask =
DispatcherHelpers.CallOnDispatcher(async() => await _reactInstanceManager.GetOrCreateReactContextAsync(CancellationToken.None), true);
// We need to wait for the initial `Measure` call, if this view has
// not yet been measured, we set the `_attachScheduled` flag, which
// will enable deferred attachment of the root node.
if (_wasMeasured)
{
await _reactInstanceManager.AttachMeasuredRootViewAsync(this);
}
else
{
_attachScheduled = true;
}
await getReactContextTaskTask.Unwrap();
}
/// <summary>
/// Schedule rendering of the React component rendered by the
/// JavaScript application from the given JavaScript module
/// <paramref name="moduleName"/> using the provided
/// <paramref name="reactInstanceManager"/> to attach to the JavaScript context of that manager.
/// Extra parameter
/// <paramref name="initialProps"/> can be used to pass initial properties for the react component.
/// </summary>
/// <param name="reactInstanceManager">
/// The React instance manager.
/// </param>
/// <param name="moduleName">The module name.</param>
/// <param name="initialProps">The initialProps</param>
public async void StartReactApplication(ReactInstanceManager reactInstanceManager, string moduleName, JObject initialProps)
{
DispatcherHelpers.AssertOnDispatcher();
if (_reactInstanceManager != null)
{
throw new InvalidOperationException("This root view has already been attached to an instance manager.");
}
_reactInstanceManager = reactInstanceManager;
_jsModuleName = moduleName;
_initialProps = initialProps;
var getReactContextTask = default(Task);
if (!_reactInstanceManager.HasStartedCreatingInitialContext)
{
getReactContextTask = _reactInstanceManager.GetOrCreateReactContextAsync(CancellationToken.None);
}
// We need to wait for the initial `Measure` call, if this view has
// not yet been measured, we set the `_attachScheduled` flag, which
// will enable deferred attachment of the root node.
if (_wasMeasured)
{
_reactInstanceManager.AttachMeasuredRootView(this);
}
else
{
_attachScheduled = true;
}
if (getReactContextTask != null)
{
await getReactContextTask.ConfigureAwait(false);
}
}