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/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2025 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU Lesser General Public License, as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your option) any
* later version. Please see the file LICENSE-LGPL for details.
*
* Web Page: http://brltty.app/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#ifndef BRLTTY_INCLUDED_CMD_QUEUE
#define BRLTTY_INCLUDED_CMD_QUEUE
#include "cmd_types.h"
#include "ktb_types.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
extern int beginCommandQueue (void);
extern void endCommandQueue (void);
extern void suspendCommandQueue (void);
extern void resumeCommandQueue (void);
typedef void *CommandPreprocessor (void);
typedef void CommandPostprocessor (void *state, int command, const CommandEntry *cmd, int handled);
extern int pushCommandEnvironment (
const char *name,
CommandPreprocessor *preprocessCommand,
CommandPostprocessor *postprocessCommand
);
extern int popCommandEnvironment (void);
typedef int CommandHandler (int command, void *data);
typedef void CommandDataDestructor (void *data);
extern int pushCommandHandler (
const char *name,
KeyTableCommandContext context,
CommandHandler *handler,
CommandDataDestructor *destructor,
void *data
);
extern int popCommandHandler (void);
extern int handleCommand (int command);
extern KeyTableCommandContext getCurrentCommandContext (void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* BRLTTY_INCLUDED_CMD_QUEUE */
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