TreeView.java 文件源码

@Override
public Object run() {
    switch (type) {
    case 0:
        guardedPaint((Graphics) p1);
        break;
    case 1:
        guardedValidateTree();
        break;
    case 2:
        guardedDoLayout();
        break;
    case 3:
        ExplorerTree.super.processFocusEvent((FocusEvent)p1);
        //Since the selected when focused is different, we need to force a
        //repaint of the entire selection, but let's do it in guarded more
        //as any other repaint
        repaintSelection();
        break;
    default:
        throw new IllegalStateException("type: " + type);
    }

    return null;
}