Outliner: Left and right walk navigation

Previously the left and right arrow keys would close and open the active
tree element, but a subsequent key press would not select up or
down the tree as is common in tree-based interfaces.

Walking left and right now does a selection action after opening or closing
the active tree item. For example, a right key press on a closed element
will open it's subtree, and an additional right key press will select
the first child element.

A left key press anywhere in a subtree will first close the active
element if it's subtree is expanded. Walking left again will select the
parent element.

Part of T77408

Differential Revision: https://developer.blender.org/D8650
This commit is contained in:
Nathan Craddock 2020-08-26 10:58:23 -06:00
parent b028a43245
commit 70151e41dc
2 changed files with 40 additions and 3 deletions

@ -152,8 +152,11 @@ void OUTLINER_OT_highlight_update(wmOperatorType *ot)
/* Open or close a tree element, optionally toggling all children recursively */
void outliner_item_openclose(TreeElement *te, bool open, bool toggle_all)
{
TreeStoreElem *tselem = TREESTORE(te);
if (BLI_listbase_is_empty(&te->subtree)) {
return;
}
TreeStoreElem *tselem = TREESTORE(te);
if (open) {
tselem->flag &= ~TSE_CLOSED;
}

@ -1634,6 +1634,40 @@ static TreeElement *outliner_find_next_element(SpaceOutliner *space_outliner, Tr
return te;
}
static TreeElement *outliner_walk_left(SpaceOutliner *space_outliner,
TreeElement *te,
bool toggle_all)
{
TreeStoreElem *tselem = TREESTORE(te);
if (TSELEM_OPEN(tselem, space_outliner)) {
outliner_item_openclose(te, false, toggle_all);
}
/* Only walk up a level if the element is closed and not toggling expand */
else if (!toggle_all && te->parent) {
te = te->parent;
}
return te;
}
static TreeElement *outliner_walk_right(SpaceOutliner *space_outliner,
TreeElement *te,
bool toggle_all)
{
TreeStoreElem *tselem = TREESTORE(te);
/* Only walk down a level if the element is open and not toggling expand */
if (!toggle_all && TSELEM_OPEN(tselem, space_outliner) && !BLI_listbase_is_empty(&te->subtree)) {
te = te->subtree.first;
}
else {
outliner_item_openclose(te, true, toggle_all);
}
return te;
}
static TreeElement *do_outliner_select_walk(SpaceOutliner *space_outliner,
TreeElement *te,
const int direction,
@ -1650,10 +1684,10 @@ static TreeElement *do_outliner_select_walk(SpaceOutliner *space_outliner,
te = outliner_find_next_element(space_outliner, te);
break;
case UI_SELECT_WALK_LEFT:
outliner_item_openclose(te, false, toggle_all);
te = outliner_walk_left(space_outliner, te, toggle_all);
break;
case UI_SELECT_WALK_RIGHT:
outliner_item_openclose(te, true, toggle_all);
te = outliner_walk_right(space_outliner, te, toggle_all);
break;
}