java - Detect when expand/collapse (plus/minus) icon is clicked in JTree -


i'm writing mouselistener replace default clicking behaviour in jtree. how can tell when icon clicked can expand row myself? (i know default behaviour, i'm replacing default mouselistener own mouselistener).

here's code:

    // custom mouse listener tree     mouselistener treemouselistener = new mouseadapter()     {       public void mousepressed (mouseevent e)       {           treepath path = cameratree.getpathforlocation(e.getx(), e.gety());            // methods based on clicked           ...       }     };

the treepath returned cameratree.getpathforlocation(e.getx(), e.gety()) null when clicking on +/- icon. how can tell when +/- icon clicked?

if using jtree, use treeselectionlistener. more info here: http://docs.oracle.com/javase/tutorial/uiswing/components/tree.html


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