static void
undo_do_something (GObject *object,
EUndoDoType todo,
void (* insert_func) (GObject *object,
const gchar *text,
gint position),
void (* delete_func) (GObject *object,
gint position_start,
gint position_end))
{
EUndoData *data;
EUndoInfo *info = NULL;
data = g_object_get_data (object, UNDO_DATA_KEY);
if (!data)
return;
if (todo == E_UNDO_DO_UNDO && data->n_undos > 0) {
info = data->undo_stack[REAL_INDEX (data->n_undos - 1)];
data->n_undos--;
data->n_redos++;
} else if (todo == E_UNDO_DO_REDO && data->n_redos > 0) {
info = data->undo_stack[REAL_INDEX (data->n_undos)];
data->n_undos++;
data->n_redos--;
}
if (!info)
return;
g_signal_handler_block (object, data->insert_handler_id);
g_signal_handler_block (object, data->delete_handler_id);
if (info->type == E_UNDO_INSERT) {
if (todo == E_UNDO_DO_UNDO) {
delete_func (object, info->position_start, info->position_start + g_utf8_strlen (info->text, -1));
widget_undo_place_cursor_at (object, info->position_start);
} else {
insert_func (object, info->text, info->position_start);
widget_undo_place_cursor_at (object, info->position_start + g_utf8_strlen (info->text, -1));
}
} else if (info->type == E_UNDO_DELETE) {
if (todo == E_UNDO_DO_UNDO) {
insert_func (object, info->text, info->position_start);
widget_undo_place_cursor_at (object, info->position_start + g_utf8_strlen (info->text, -1));
} else {
delete_func (object, info->position_start, info->position_end);
widget_undo_place_cursor_at (object, info->position_start);
}
}
data->current_info = NULL;
g_signal_handler_unblock (object, data->delete_handler_id);
g_signal_handler_unblock (object, data->insert_handler_id);
}
FeriteVariable *ferite_amtarray_get_index( FeriteScript *script, FeriteAMTArray *array, int index )
{
unsigned int real_index = index;
FeriteAMTArrayEntry *entry = NULL;
REAL_INDEX( array, index, real_index );
entry = ferite_amt_get( script, array->_array, real_index );
if( entry ) {
return entry->variable;
}
return NULL;
}
static void
reset_redos (EUndoData *data)
{
gint ii, index;
for (ii = 0; ii < data->n_redos; ii++) {
index = REAL_INDEX (data->n_undos + ii);
free_undo_info (data->undo_stack[index]);
data->undo_stack[index] = NULL;
}
data->n_redos = 0;
}
static gboolean
undo_check_redo (GObject *object,
gchar **description)
{
EUndoData *data;
data = g_object_get_data (object, UNDO_DATA_KEY);
if (!data)
return FALSE;
if (data->n_redos <= 0)
return FALSE;
if (description)
*description = undo_describe_info (data->undo_stack[REAL_INDEX (data->n_undos)], E_UNDO_DO_REDO);
return TRUE;
}
static void
push_undo (EUndoData *data,
EUndoInfo *info)
{
gint index;
reset_redos (data);
if (data->n_undos == data->undo_len) {
data->undo_from = (data->undo_from + 1) % data->undo_len;
} else {
data->n_undos++;
}
index = REAL_INDEX (data->n_undos - 1);
free_undo_info (data->undo_stack[index]);
data->undo_stack[index] = info;
}