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Undo System: basic support in background mode

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Some developers were using undo for their scripts, this allows for undo
pushes in background mode, however - as with 2.7x, undo isn't
initialized at startup in background mode.

See replies to T60934
This commit is contained in:
Campbell Barton
2019-02-08 10:15:11 +11:00
parent e1edb51699
commit 3d16a268ee
1 changed files with 12 additions and 2 deletions
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14
source/blender/editors/undo/ed_undo.c
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@@ -323,6 +323,15 @@ static int ed_undo_exec(bContext *C, wmOperator *op)
static int ed_undo_push_exec(bContext *C, wmOperator *op)
{
if (G.background) {
/* Exception for background mode, see: T60934.
* Note: since the undo stack isn't initialized on startup, background mode behavior
* won't match regular usage, this is just for scripts to do explicit undo pushes. */
wmWindowManager *wm = CTX_wm_manager(C);
if (wm->undo_stack == NULL) {
wm->undo_stack = BKE_undosys_stack_create();
}
}
char str[BKE_UNDO_STR_MAX];
RNA_string_get(op->ptr, "message", str);
ED_undo_push(C, str);
@@ -357,7 +366,7 @@ static bool ed_undo_is_init_poll(bContext *C)
{
wmWindowManager *wm = CTX_wm_manager(C);
if (wm->undo_stack == NULL) {
CTX_wm_operator_poll_msg_set(C, "Undo disabled in background mode or at startup");
CTX_wm_operator_poll_msg_set(C, "Undo disabled at startup");
return false;
}
return true;
@@ -399,7 +408,8 @@ void ED_OT_undo_push(wmOperatorType *ot)
/* api callbacks */
ot->exec = ed_undo_push_exec;
ot->poll = ed_undo_is_init_poll;
/* Unlike others undo operators this initializes undo stack. */
ot->poll = ED_operator_screenactive;
ot->flag = OPTYPE_INTERNAL;