public void Invoke()
{
Cleanup();
using (_element.Bind(_node, false))
_cleanup = _effect?.Invoke();
}
/// <summary>
/// Renders the given element.
/// </summary>
public virtual RenderResult RenderElement(ofElement element)
{
bool shouldRender;
// remove first to avoid infinite rerender loop
lock (Root.RerenderNodes)
shouldRender = Root.RerenderNodes.Remove(this);
if (_disposed)
{
return(RenderResult.Mismatch);
}
if (!CanRender(element))
{
return(RenderResult.Mismatch);
}
shouldRender = shouldRender || AlwaysInvalid || Element == null || Element.ShouldComponentUpdate(element);
if (!shouldRender)
{
Root.Diagnostics?.OnNodeRenderSkipped(this);
return(RenderResult.Skipped);
}
// enable hooks
_hooks = 0;
try
{
using (element.Bind(this))
{
Root.Diagnostics?.OnNodeRendering(this);
var result = element.RenderSubtree();
if (result && ofElement.IsHookValidated)
{
if (_lastHook == null)
{
_lastHook = _hooks;
}
else if (_lastHook != _hooks)
{
throw new InvalidOperationException($"The number of hooks ({_hooks}) does not match with the previous render ({_lastHook}). " +
"See https://reactjs.org/docs/hooks-rules.html for rules about hooks.");
}
}
return(result
? RenderResult.Rendered
: RenderResult.Skipped);
}
}
catch (Exception e)
{
Root.Diagnostics?.OnException(e);
throw;
}
finally
{
_hooks = null;
}
}
