ultralight::dom::data::BindableHolder

Whether or not Context::Bind() can bind an instance through H. More...

#include <Ultralight/dom/data/Holders.h>

Concept definition

template<typename H>
concept BindableHolder = LockableHolder<H>
    && Described<typename HolderTraits<std::remove_cvref_t<H>>::element_type>

Detailed Description

Whether or not Context::Bind() can bind an instance through H.

H must be a LockableHolder whose object type is described (see TypeTraits), eg, std::shared_ptr<HUD>, RefPtr<HUD>, or std::weak_ptr<HUD>. Each Context::Sync() locks the holder while it reads the instance. Once the object is gone, the binding stops updating and the page keeps the values it last got.

Note

The smart-pointer receiver forms of Binding::OnChange() and Binding::OnAction() need only a LockableHolder.