private void setState(JDesktopPane dp, String state) { if (state == CLOSE) { JInternalFrame f = dp.getSelectedFrame(); if (f == null) { return; } f.doDefaultCloseAction(); } else if (state == MAXIMIZE) { // maximize the selected frame JInternalFrame f = dp.getSelectedFrame(); if (f == null) { return; } if (!f.isMaximum()) { if (f.isIcon()) { try { f.setIcon(false); f.setMaximum(true); } catch (PropertyVetoException pve) { } } else { try { f.setMaximum(true); } catch (PropertyVetoException pve) { } } } } else if (state == MINIMIZE) { // minimize the selected frame JInternalFrame f = dp.getSelectedFrame(); if (f == null) { return; } if (!f.isIcon()) { try { f.setIcon(true); } catch (PropertyVetoException pve) { } } } else if (state == RESTORE) { // restore the selected minimized or maximized frame JInternalFrame f = dp.getSelectedFrame(); if (f == null) { return; } try { if (f.isIcon()) { f.setIcon(false); } else if (f.isMaximum()) { f.setMaximum(false); } f.setSelected(true); } catch (PropertyVetoException pve) { } } }