static int action_layer_prev_poll(bContext *C)
{
/* Action Editor's action editing modes only */
if (ED_operator_action_active(C)) {
AnimData *adt = ED_actedit_animdata_from_context(C);
if (adt) {
if (adt->flag & ADT_NLA_EDIT_ON) {
/* Tweak Mode: We need to check if there are any tracks below the active one that we can move to */
if (adt->nla_tracks.first) {
NlaTrack *nlt = (NlaTrack *)adt->nla_tracks.first;
/* Since the first disabled track is the track being tweaked/edited,
* we can simplify things by only checking the first track:
* - If it is disabled, this is the track being tweaked,
* so there can't be anything below it
* - Otherwise, there is at least 1 track below the tweaking
* track that we can descend to
*/
if ((nlt->flag & NLATRACK_DISABLED) == 0) {
/* not disabled = there are actions below the one being tweaked */
return true;
}
}
}
else {
/* Normal Mode: If there are any tracks, we can try moving to those */
return (adt->nla_tracks.first != NULL);
}
}
}
/* something failed... */
return false;
}
static int action_layer_next_poll(bContext *C)
{
/* Action Editor's action editing modes only */
if (ED_operator_action_active(C)) {
AnimData *adt = ED_actedit_animdata_from_context(C);
if (adt) {
/* only allow if we're in tweakmode, and there's something above us... */
if (adt->flag & ADT_NLA_EDIT_ON) {
/* We need to check if there are any tracks above the active one
* since the track the action comes from is not stored in AnimData
*/
if (adt->nla_tracks.last) {
NlaTrack *nlt = (NlaTrack *)adt->nla_tracks.last;
if (nlt->flag & NLATRACK_DISABLED) {
/* A disabled track will either be the track itself,
* or one of the ones above it.
*
* If this is the top-most one, there is the possibility
* that there is no active action. For now, we let this
* case return true too, so that there is a natural way
* to "move to an empty layer", even though this means
* that we won't actually have an action.
*/
// return (adt->tmpact != NULL);
return true;
}
}
}
}
}
/* something failed... */
return false;
}
/* Criteria:
* 1) There must be an dopesheet/action editor, and it must be in a mode which uses actions
* 2) The associated AnimData block must not be in tweakmode
*/
static int action_stash_create_poll(bContext *C)
{
if (ED_operator_action_active(C)) {
AnimData *adt = ED_actedit_animdata_from_context(C);
/* Check tweakmode is off (as you don't want to be tampering with the action in that case) */
/* NOTE: unlike for pushdown, this operator needs to be run when creating an action from nothing... */
if (adt) {
if (!(adt->flag & ADT_NLA_EDIT_ON))
return true;
}
else {
/* There may not be any action/animdata yet, so, just fallback to the global setting
* (which may not be totally valid yet if the action editor was used and things are
* now in an inconsistent state)
*/
SpaceAction *saction = (SpaceAction *)CTX_wm_space_data(C);
Scene *scene = CTX_data_scene(C);
if (!(scene->flag & SCE_NLA_EDIT_ON)) {
/* For now, actions are only for the active object, and on object and shapekey levels... */
return ELEM(saction->mode, SACTCONT_ACTION, SACTCONT_SHAPEKEY);
}
}
}
/* something failed... */
return false;
}
/* Criteria:
* 1) There must be an dopesheet/action editor, and it must be in a mode which uses actions...
* OR
* The NLA Editor is active (i.e. Animation Data panel -> new action)
* 2) The associated AnimData block must not be in tweakmode
*/
static int action_new_poll(bContext *C)
{
Scene *scene = CTX_data_scene(C);
/* Check tweakmode is off (as you don't want to be tampering with the action in that case) */
/* NOTE: unlike for pushdown, this operator needs to be run when creating an action from nothing... */
if (ED_operator_action_active(C)) {
SpaceAction *saction = (SpaceAction *)CTX_wm_space_data(C);
Object *ob = CTX_data_active_object(C);
/* For now, actions are only for the active object, and on object and shapekey levels... */
if (saction->mode == SACTCONT_ACTION) {
/* XXX: This assumes that actions are assigned to the active object in this mode */
if (ob) {
if ((ob->adt == NULL) || (ob->adt->flag & ADT_NLA_EDIT_ON) == 0)
return true;
}
}
else if (saction->mode == SACTCONT_SHAPEKEY) {
Key *key = BKE_key_from_object(ob);
if (key) {
if ((key->adt == NULL) || (key->adt->flag & ADT_NLA_EDIT_ON) == 0)
return true;
}
}
}
else if (ED_operator_nla_active(C)) {
if (!(scene->flag & SCE_NLA_EDIT_ON)) {
return true;
}
}
/* something failed... */
return false;
}
static int actkeys_framejump_poll(bContext *C)
{
/* prevent changes during render */
if (G.is_rendering)
return 0;
return ED_operator_action_active(C);
}
static int action_unlink_poll(bContext *C)
{
if (ED_operator_action_active(C)) {
SpaceAction *saction = (SpaceAction *)CTX_wm_space_data(C);
AnimData *adt = ED_actedit_animdata_from_context(C);
/* Only when there's an active action, in the right modes... */
if (saction->action && adt)
return true;
}
/* something failed... */
return false;
}
/* Criteria:
* 1) There must be an dopesheet/action editor, and it must be in a mode which uses actions
* 2) There must be an action active
* 3) The associated AnimData block must not be in tweakmode
*/
static int action_pushdown_poll(bContext *C)
{
if (ED_operator_action_active(C)) {
SpaceAction *saction = (SpaceAction *)CTX_wm_space_data(C);
AnimData *adt = ED_actedit_animdata_from_context(C);
/* Check for AnimData, Actions, and that tweakmode is off */
if (adt && saction->action) {
/* NOTE: We check this for the AnimData block in question and not the global flag,
* as the global flag may be left dirty by some of the browsing ops here.
*/
if (!(adt->flag & ADT_NLA_EDIT_ON))
return true;
}
}
/* something failed... */
return false;
}