static int undo_stack_step(bContext *C, UndoStack *stack, int step, const char *name)
{
UndoElem *undo;
if(step==1) {
if(stack->current==NULL);
else {
if(!name || strcmp(stack->current->name, name) == 0) {
if(G.f & G_DEBUG) printf("undo %s\n", stack->current->name);
undo_restore(C, stack, stack->current);
stack->current= stack->current->prev;
return 1;
}
}
}
else if(step==-1) {
if((stack->current!=NULL && stack->current->next==NULL) || stack->elems.first==NULL);
else {
if(!name || strcmp(stack->current->name, name) == 0) {
undo= (stack->current && stack->current->next)? stack->current->next: stack->elems.first;
undo_restore(C, stack, undo);
stack->current= undo;
if(G.f & G_DEBUG) printf("redo %s\n", undo->name);
return 1;
}
}
}
return 0;
}
/* 1 = an undo, -1 is a redo. we have to make sure 'curundo' remains at current situation */
void undo_editmode_step(bContext *C, int step)
{
Object *obedit = CTX_data_edit_object(C);
/* prevent undo to happen on wrong object, stack can be a mix */
undo_clean_stack(C);
if (step == 0) {
undo_restore(curundo, curundo->getdata(C), obedit->data);
}
else if (step == 1) {
if (curundo == NULL || curundo->prev == NULL) {
error("No more steps to undo");
}
else {
if (G.debug & G_DEBUG) printf("undo %s\n", curundo->name);
curundo = curundo->prev;
undo_restore(curundo, curundo->getdata(C), obedit->data);
}
}
else {
/* curundo has to remain current situation! */
if (curundo == NULL || curundo->next == NULL) {
error("No more steps to redo");
}
else {
undo_restore(curundo->next, curundo->getdata(C), obedit->data);
curundo = curundo->next;
if (G.debug & G_DEBUG) printf("redo %s\n", curundo->name);
}
}
/* special case for editmesh, mode must be copied back to the scene */
if (obedit->type == OB_MESH) {
EDBM_selectmode_to_scene(C);
}
DAG_id_tag_update(&obedit->id, OB_RECALC_DATA);
/* XXX notifiers */
}
static int undo_stack_step(bContext *C, UndoStack *stack, int step, const char *name)
{
UndoElem *undo;
if (step == 1) {
if (stack->current == NULL) {
/* pass */
}
else {
if (!name || strcmp(stack->current->name, name) == 0) {
if (G.debug & G_DEBUG_WM) {
printf("%s: undo '%s'\n", __func__, stack->current->name);
}
undo_restore(C, stack, stack->current);
stack->current = stack->current->prev;
return 1;
}
}
}
else if (step == -1) {
if ((stack->current != NULL && stack->current->next == NULL) || stack->elems.first == NULL) {
/* pass */
}
else {
if (!name || strcmp(stack->current->name, name) == 0) {
undo = (stack->current && stack->current->next) ? stack->current->next : stack->elems.first;
undo_restore(C, stack, undo);
stack->current = undo;
if (G.debug & G_DEBUG_WM) {
printf("%s: redo %s\n", __func__, undo->name);
}
return 1;
}
}
}
return 0;
}
