Get a tree widget, like Bookmarks | Manage Bookmarks. Double-click a folder, if there are 10 children there the tree redraws itself each time a child is added, for a total of 10 times to open the node. This is more visible if you turn double buffering off in nsViewManager.cpp.

hyatt says: "This is the same problem as the toolbar buttons on mouseover... that a reflow is causing a repaint of the whole window." -- Can we delay the reflow events until all the children are added?

Targeting M5. Who needs to fix this?

This is the incremental stuff we were talking about earlier today, M5 takes this off the radar, I don't get it.

Sorry, I didn't make the connection. changing to M4 to keep it on radar. Is this a problem in reflow, or because we're causing too many reflows, or what? Who should it be assigned to?

This is the same as the toolbar button problem. An incremental reflow causes a repaint of the whole window. This isn't specific to the tree view, and it should be assigned to Kipp or Troy. (Let Kipp make a doctoral thesis out of it.) ;)

This is the same as the toolbar button problem. An incremental reflow causes a repaint of the whole window. This isn't specific to the tree view, and it should be assigned to Kipp or Troy. (Let Kipp make a doctoral thesis out of it.) ;)

*** This bug has been marked as a duplicate of 1482 ***

verified.