Tree Plus/Minus Icons

Vaadin 6 / 7 / 8 Framework UI
1

This seems like a basic question, but I can’t figure it out. How do I change the expand/collapse graphics in a Tree from arrows to plus/minus signs?

Thanks.

Bill

2

You need a custom theme (plain CSS) to do this. Relevant selectors are .v-tree-node and .v-tree-node-expanded (set the background images for them).