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/*
* This is a plug-in for GIMP.
*
* Generates clickable image maps.
*
* Copyright (C) 1998-1999 Maurits Rijk lpeek.mrijk@consunet.nl
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#ifndef _IMAP_COMMAND_H
#define _IMAP_COMMAND_H
#include "imap_object.h"
#define DEFAULT_UNDO_LEVELS 10
typedef struct CommandClass_t CommandClass_t;
typedef struct Command_t Command_t;
typedef struct CommandList_t CommandList_t;
typedef enum {CMD_APPEND, CMD_DESTRUCT, CMD_IGNORE} CmdExecuteValue_t;
struct CommandClass_t {
void (*destruct)(Command_t*);
CmdExecuteValue_t (*execute)(Command_t*);
void (*undo)(Command_t*);
void (*redo)(Command_t*);
};
struct Command_t {
CommandClass_t *class;
CommandList_t *sub_commands;
const gchar *name;
gboolean locked;
};
typedef Command_t* (*CommandFactory_t)(void);
typedef void (*CommandListCallbackFunc_t)(Command_t*, gpointer);
typedef struct {
CommandListCallbackFunc_t func;
gpointer data;
} CommandListCB_t;
typedef struct {
GList *list;
} CommandListCallback_t;
struct CommandList_t {
CommandList_t *parent;
gint undo_levels;
GList *list;
GList *undo; /* Pointer to current undo command */
GList *redo; /* Pointer to current redo command */
CommandListCallback_t update_cb;
};
CommandList_t *command_list_new(gint undo_levels);
void command_list_destruct(CommandList_t *list);
void command_list_set_undo_level(gint level);
void command_list_add(Command_t *command);
void command_list_remove_all(void);
void command_list_undo(CommandList_t *list);
void command_list_undo_all(CommandList_t *list);
void command_list_redo(CommandList_t *list);
void command_list_redo_all(CommandList_t *list);
void command_list_add_update_cb(CommandListCallbackFunc_t func, gpointer data);
Command_t *command_list_get_redo_command(void);
Command_t *command_new(void (*func)(void));
Command_t *command_init(Command_t *command, const gchar *name,
CommandClass_t *class);
void command_execute(Command_t *command);
void command_undo(Command_t *command);
void command_redo(Command_t *command);
void command_set_name(Command_t *command, const gchar *name);
void command_add_subcommand(Command_t *command, Command_t *sub_command);
void last_command_undo(void);
void last_command_redo(void);
void subcommand_list_add(CommandList_t *list, Command_t *command);
Command_t *subcommand_start(const gchar *name);
void subcommand_end(void);
#define command_lock(command) ((command)->locked = TRUE)
#endif /* _IMAP_COMMAND_H */
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