CategoryDescriptor.java 文件源码

private MouseListener createMouseListener() {
    return new MouseAdapter() {
        public void mouseClicked(MouseEvent event) {
            if (SwingUtilities.isRightMouseButton(event)) {
                JComponent comp = (JComponent)event.getSource();
                Item item = null;
                if (comp instanceof JList) {
                    JList list = (JList)comp;
                    Point p = event.getPoint();
                    int index = list.locationToIndex(p);
                    if (index >= 0 && !list.getCellBounds(index, index).contains(p)) {
                        index = -1;
                    }
                    if (index >= 0) {
                        item = (Item)list.getModel().getElementAt(index);
                    }
                }
                Action[] actions = null == item ? category.getActions() : item.getActions();
                JPopupMenu popup = Utilities.actionsToPopup( actions, getComponent() );
                Utils.addCustomizationMenuItems( popup, getPalettePanel().getController(), getPalettePanel().getSettings() );
                popup.show(comp, event.getX(), event.getY());
            }
        }
    };
}