live_cells::static_mutable_compute_changes_only_cell_state< F, R > Class Template Reference

A static_mutable_compute_cell_state that only notifies the observers of the cell when the cell's value has actually changed. More...

#include <static_mutable_compute_cell.hpp>

Inheritance diagram for live_cells::static_mutable_compute_changes_only_cell_state< F, R >:

Collaboration diagram for live_cells::static_mutable_compute_changes_only_cell_state< F, R >:

Additional Inherited Members
Public Types inherited from live_cells::cell_state
typedef std::shared_ptr< cell_state >	ref
	Shared pointer to a cell_state.
Public Types inherited from live_cells::observer
typedef std::shared_ptr< observer >	ref
	Shared pointer to an observer.
Public Member Functions inherited from live_cells::changes_only_cell_state< static_mutable_compute_cell_state< F, R > >
void	will_update (const key_ref &k) override
void	update (const key_ref &k, bool changed) override
Public Member Functions inherited from live_cells::static_mutable_compute_cell_state< F, R >
template<typename T , typename U >
	static_mutable_compute_cell_state (key_ref key, T &&compute, U &&reverse, const std::unordered_set< cell > &arguments)
	Create the state for a static_mutable_compute cell.
Public Member Functions inherited from live_cells::mutable_compute_cell_state< std::invoke_result_t< F > >
	mutable_compute_cell_state (key_ref key, const std::unordered_set< cell > &arguments)
	Create the state for a mutable computed cell.
std::invoke_result_t< F >	value ()
	Get the value of the cell.
void	value (std::invoke_result_t< F > value)
	Set the value of the cell.
void	will_update (const key_ref &k) override
	Notifies this observer that the value of the Cell identified by k is going to change.
void	update (const key_ref &k, bool changed) override
	Notifies this observer that the value of the Cell identified by k has changed.
void	init () override
	Add this state as an observer to the compute function arguments.
void	pause () override
	Remove this state from the observers of the compute function arguments.
Public Member Functions inherited from live_cells::mutable_cell_state< T >
	mutable_cell_state (key_ref key, T value)
	Create a mutable cell state with the value initialized to value.
T	value ()
	Get the value of the cell.
void	value (T value)
	Set the value of the cell and notify its observers.
	cell_state (key_ref k)
	Create a cell state with a given key.
Public Member Functions inherited from live_cells::cell_state
	cell_state (key_ref k)
	Create a cell state with a given key.
cell_state &	operator= (const cell_state &other)=delete
virtual void	add_observer (observer::ref o)
	Add an observer to the cell's set of observers.
virtual void	remove_observer (observer::ref o)
	Remove an observer from the cell's set of observers.
virtual void	notify_will_update ()
	Notify the observers that the cell's value will change.
virtual void	notify_update (bool did_change=true)
	Notify the observers that the cell's value has changed.
Protected Types inherited from live_cells::static_mutable_compute_cell_state< F, R >
typedef std::invoke_result_t< F >	value_type
typedef mutable_compute_cell_state< value_type >	parent
Protected Member Functions inherited from live_cells::static_mutable_compute_cell_state< F, R >
value_type	compute () override
	Compute the value of the cell as a function of the arguments.
void	reverse_compute (value_type value) override
	Call the reverse computation function of the cell.
Protected Member Functions inherited from live_cells::mutable_compute_cell_state< std::invoke_result_t< F > >
std::shared_ptr< observer >	observer_ptr ()
	Get an observer::ref for this, that can be passed to add_observer() and remove_observer() of the Cell concept.
Protected Member Functions inherited from live_cells::mutable_cell_state< T >
void	silent_set (T value)
	Set the cell's value without notifying observers.
void	add_to_batch ()
	Add this state to the list of mutable cells that were updating during the current batch update.
Protected Member Functions inherited from live_cells::cell_state
bool	is_active () const
	Does the cell have at least one observer?
Protected Member Functions inherited from live_cells::observer_cell_state
void	init_observer_state ()
	Initialize the cell observation state.
void	pause_observer_state ()
	Pause the cell observation state.
void	handle_will_update (const std::invocable auto &notify_will_update)
	Handle a observer::will_update call.
void	handle_will_update (const std::invocable auto &pre_update, const std::invocable auto &notify_will_update)
	Handle a observer::will_update call.
void	handle_update (bool changed, const std::invocable< bool > auto &notify_update)
	Handle an observer::update call.
void	handle_update (bool changed, const std::invocable auto &did_change, const std::invocable< bool > auto &notify_update, const std::invocable auto &post_update)
	Handle an observer::update call.
Static Protected Member Functions inherited from live_cells::mutable_cell_state< T >
static bool	is_batch_update ()
	Is a batch update of mutable cells currently in effect?
Protected Attributes inherited from live_cells::mutable_compute_cell_state< std::invoke_result_t< F > >
std::unordered_set< cell >	arguments
	Set of argument cells referenced by the value computation function.
bool	reverse
	Is the value of the cell being set, and hence a reverse computation being performed?
bool	computed
	Is the cell's value the computed value (true) or a value that was set (false).
Protected Attributes inherited from live_cells::cell_state
key_ref	key_
	Key identifying the cell corresponding to this state.
std::unordered_map< observer::ref, std::size_t >	observers
	The set of observers observing changes to the values in the cell corresponding to this state.
Protected Attributes inherited from live_cells::observer_cell_state
bool	stale = true
	Does the value have to be recomputed?
bool	updating = false
	Are the argument cells in the process of updating their values?

Detailed Description

template<std::invocable F, typename R>
class live_cells::static_mutable_compute_changes_only_cell_state< F, R >

A static_mutable_compute_cell_state that only notifies the observers of the cell when the cell's value has actually changed.

---

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

• src/static_mutable_compute_cell.hpp