XML Editor: Lazy node expansion
Expandable nodes with children only store a dummy child until the "test-expand-row" signal was triggered.
Closes #736 (closed)
(cherry picked from commit 78fe191a)
Expandable nodes with children only store a dummy child until the "test-expand-row" signal was triggered.
Closes #736 (closed)
(cherry picked from commit 78fe191a)