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#ifndef _SWAY_TRANSACTION_H
#define _SWAY_TRANSACTION_H
#include "sway/tree/container.h"
/**
* Transactions enable us to perform atomic layout updates.
*
* When we want to make adjustments to the layout, we create a transaction.
* A transaction contains a list of affected containers and their new state.
* A state might contain a new size, or new border settings, or new parent/child
* relationships.
*
* Calling transaction_commit() makes sway notify of all the affected clients
* with their new sizes. We then wait for all the views to respond with their
* new surface sizes. When all are ready, or when a timeout has passed, we apply
* the updates all at the same time.
*/
struct sway_transaction {
struct wl_event_source *timer;
list_t *instructions; // struct sway_transaction_instruction *
list_t *damage; // struct wlr_box *
size_t num_waiting;
};
/**
* Create a new transaction.
*/
struct sway_transaction *transaction_create(void);
/**
* Add a container's pending state to the transaction.
*/
void transaction_add_container(struct sway_transaction *transaction,
struct sway_container *container);
/**
* Add a box to be damaged when the transaction is applied.
* The box should be in layout coordinates.
*/
void transaction_add_damage(struct sway_transaction *transaction,
struct wlr_box *box);
/**
* Submit a transaction to the client views for configuration.
*/
void transaction_commit(struct sway_transaction *transaction);
/**
* Notify the transaction system that a view is ready for the new layout.
*
* When all views in the transaction are ready, the layout will be applied.
*/
void transaction_notify_view_ready(struct sway_view *view, uint32_t serial);
#endif
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