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/*
* Copyright (C) 2020 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2020 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-tk-lib
* Created on: 12 июн. 2017 г.
*
* lsp-tk-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-tk-lib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-tk-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_TK_SYS_SLOTSET_H_
#define LSP_PLUG_IN_TK_SYS_SLOTSET_H_
#ifndef LSP_PLUG_IN_TK_IMPL
#error "use <lsp-plug.in/tk/tk.h>"
#endif
#include <lsp-plug.in/lltl/parray.h>
namespace lsp
{
namespace tk
{
class Widget;
/**
* Set of slots identified by unique slot identifier
*/
class SlotSet
{
protected:
typedef struct item_t
{
slot_t nType;
Slot sSlot;
} item_t;
protected:
lltl::parray<item_t> vSlots;
public:
explicit SlotSet();
~SlotSet();
public:
/** Get slot by identifier
*
* @param id slot identifier
* @return slot or NULL if not present
*/
Slot *slot(slot_t id);
/** Add slot
*
* @param id slot identifier
* @return added slot or NULL if no memory
*/
Slot *add(slot_t id);
/** Add slot and bind
*
* @param id slot identifier
* @param handler slot handler
* @param arg argument
* @param enabled enable flag
* @return status of operation
*/
handler_id_t add(slot_t id, event_handler_t handler, void *arg = NULL, bool enabled = true);
/** Destroy previously allocated structures
*
*/
void destroy();
/**
* Check that the slot set contains the specific slot
* @param id slot identifier
* @return true if the slot set contains the specific slot
*/
bool contains(slot_t id) const;
/** Bind slot handler to slot
*
* @param id slot identifier
* @param handler slot handler
* @param arg slot argument
* @param enabled enable flag
* @return status of operation
*/
handler_id_t bind(slot_t id, event_handler_t handler, void *arg = NULL, bool enabled = true);
/** Intercept slot
*
* @param id slot identifier
* @param handler interceptor handler
* @param arg slot argument
* @param enabled enable flag
* @return status of operation
*/
handler_id_t intercept(slot_t id, event_handler_t handler, void *arg = NULL, bool enabled = true);
/** Unbind slot handler
*
* @param id slot identifier
* @param handler slot handler identifier
* @return status of operation
*/
status_t unbind(slot_t id, handler_id_t handler);
/** Unbind slot handler
*
* @param id slot identifier
* @param handler slot handler routine
* @param arg slot argument
* @return status of operation
*/
handler_id_t unbind(slot_t id, event_handler_t handler, void *arg = NULL);
/** Unbind all handlers for the slot
*
* @param id slot identifier
* @return number of handlers removed from bindings
*/
size_t unbind_all(slot_t id);
/** Disable event handler in the slot
*
* @param id slot identifier
* @param handler handler identifier
* @return status of operation
*/
status_t disable(slot_t id, handler_id_t handler);
/** Disable all event handlers
*
* @param id slot identifier
* @return number of non-disabled handlers that were disabled
*/
ssize_t disable_all(slot_t id);
/** Enable event handler in the slot
*
* @param id handler identifier
* @return status of operation
*/
status_t enable(slot_t id, handler_id_t handler);
/** Enable all event handlers for slot
*
* @param id slot identifier
* @return number of non-enabled handlers that were disabled
*/
size_t enable_all(slot_t id);
/** Execute slot handlers
*
* @param sender the widget that initiates an event
* @param id slot identifier
* @param data data to process
* @return status of operation
*/
status_t execute(slot_t id, Widget *sender, void *data = NULL);
};
}
} /* namespace lsp */
#endif /* LSP_PLUG_IN_TK_SYS_SLOTSET_H_ */
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