Inheritance diagram for tt::detail::observable_value< T >:

Public Types
using	super = observable_base<T>

using	value_type = typename super::value_type

using	atomic_type = std::conditional_t<is_atomic, std::atomic<value_type>, value_type>

Public Types inherited from tt::detail::observable_base< T >
using	value_type = T

using	notifier_type = notifier<void()>

using	callback_type = typename notifier_type::callback_type

using	callback_ptr_type = typename notifier_type::callback_ptr_type

Public Member Functions
	observable_value (observable< value_type > *owner) noexcept

	observable_value (observable< value_type > *owner, value_type const &value) noexcept

value_type	load () const noexcept override
	Get the current value.

bool	store (value_type const &new_value) noexcept override
	Set the value.

Public Member Functions inherited from tt::detail::observable_base< T >
	observable_base (observable_base const &)=delete

	observable_base (observable_base &&)=delete

observable_base &	operator= (observable_base const &)=delete

observable_base &	operator= (observable_base &&)=delete

	observable_base (observable< value_type > *owner) noexcept
	Constructor.

void	notify () noexcept

virtual void	replace_operand (observable_base from, observable_base to) noexcept
	Replace the operands.

void	replace_with (observable_base *other) noexcept
	Let other take over the listeners and owner.

void	add_listener (observable_base *listener)

void	remove_listener (observable_base *listener)

Static Public Attributes
static constexpr bool	is_atomic = may_be_atomic_v<value_type>

Member Function Documentation

◆ load()

template<typename T >

value_type tt::detail::observable_value< T >::load ( ) const

inlineoverridevirtualnoexcept

Get the current value.

The value is often calculated directly from the cached values retrieved from notifications down the chain.

Implements tt::detail::observable_base< T >.

◆ store()

template<typename T >

bool tt::detail::observable_value< T >::store ( value_type const & new_value )

inlineoverridevirtualnoexcept

Set the value.

The value is often not directly stored, but instead forwarded up the chain of observables. And then let the notifications flowing backward updated the cached values so that loads() will be quick.

Parameters

new_value The new value

Returns: true if the value was different from before.

Implements tt::detail::observable_base< T >.

The documentation for this class was generated from the following file:

hikogui/src/ttauri/observable.hpp

Public Types

Public Member Functions

Static Public Attributes

Member Function Documentation

◆ load()

◆ store()