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/*
* 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 2 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.
*/
/* (C) Marcin Kwadrans <quarter@users.sourceforge.net> */
#include "include/support.h"
#include "include/command.h"
#include "include/message.h"
class LWCommandGo: public LWCommand {
LWValue *execute1 (LWContext *context, guint argc, LWValue *args[])
{
g_return_val_if_fail (argc == 0 || argc == 1, NULL);
gint steps = (argc == 1) ? args[0]->toInt() : 1;
if (steps == 0)
return NULL;
if (ABS(steps) > 1) {
LWValue *value = new LWValue (steps + (steps > 0 ? -1 : 1));
g_queue_push_head (context->stack, (gpointer) value);
context->resume = TRUE;
}
if (steps > 0) {
context->wizard->stepForward();
} else
context->wizard->stepBack();
context->wait_time = context->wizard->getPauseTime();
context->wait_for = (context->wait_time > 0) ? LW_RESUME_TIMEOUT : LW_RESUME_IDLE;
return NULL;
}
LWValue *resume1 (LWContext *context, guint argc, LWValue *args[])
{
g_return_val_if_fail (argc == 0 || argc == 1, NULL);
(void) args;
LWValue *value = (LWValue *) g_queue_pop_head (context->stack);
gint steps = value->toInt();
delete value;
if (ABS(steps) > 1) {
value = new LWValue (steps + (steps > 0 ? -1 : 1));
g_queue_push_head (context->stack, (gpointer) value);
context->resume = TRUE;
}
if (steps > 0) {
context->wizard->stepForward();
} else
context->wizard->stepBack();
context->wait_time = context->wizard->getPauseTime();
context->wait_for = (context->wait_time > 0) ? LW_RESUME_TIMEOUT : LW_RESUME_IDLE;
return NULL;
}
const gchar *getName (void)
{
return "go";
}
gchar *getHint ()
{
return _("Go one or more steps");
}
void checkArgument (guint n, LWValue *value)
{
(void) n;
if (FALSE == value->isVariable() && FALSE == value->checkRange())
throw new LWMessage (LW_ERROR_NumberOutOfRange);
}
void checkArgc (guint n)
{
if (n > 1)
throw new LWMessage (LW_ERROR_WrongNumberOfArguments);
}
};
LWSymbol *new_LWCommandGo()
{
return new LWCommandGo();
}
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