< prev index next >

src/java.desktop/share/classes/javax/swing/JList.java

Print this page




1499 
1500     /**
1501      * Returns the tooltip text to be used for the given event. This overrides
1502      * {@code JComponent}'s {@code getToolTipText} to first check the cell
1503      * renderer component for the cell over which the event occurred, returning
1504      * its tooltip text, if any. This implementation allows you to specify
1505      * tooltip text on the cell level, by using {@code setToolTipText} on your
1506      * cell renderer component.
1507      * <p>
1508      * <strong>Note:</strong> For <code>JList</code> to properly display the
1509      * tooltips of its renderers in this manner, <code>JList</code> must be a
1510      * registered component with the <code>ToolTipManager</code>. This registration
1511      * is done automatically in the constructor. However, if at a later point
1512      * <code>JList</code> is unregistered, by way of a call to
1513      * {@code setToolTipText(null)}, tips from the renderers will no longer display.
1514      *
1515      * @param event the {@code MouseEvent} to fetch the tooltip text for
1516      * @see JComponent#setToolTipText
1517      * @see JComponent#getToolTipText
1518      */

1519     public String getToolTipText(MouseEvent event) {
1520         if(event != null) {
1521             Point p = event.getPoint();
1522             int index = locationToIndex(p);
1523             ListCellRenderer<? super E> r = getCellRenderer();
1524             Rectangle cellBounds;
1525 
1526             if (index != -1 && r != null && (cellBounds =
1527                                getCellBounds(index, index)) != null &&
1528                                cellBounds.contains(p.x, p.y)) {
1529                 ListSelectionModel lsm = getSelectionModel();
1530                 Component rComponent = r.getListCellRendererComponent(
1531                            this, getModel().getElementAt(index), index,
1532                            lsm.isSelectedIndex(index),
1533                            (hasFocus() && (lsm.getLeadSelectionIndex() ==
1534                                            index)));
1535 
1536                 if(rComponent instanceof JComponent) {
1537                     MouseEvent      newEvent;
1538 




1499 
1500     /**
1501      * Returns the tooltip text to be used for the given event. This overrides
1502      * {@code JComponent}'s {@code getToolTipText} to first check the cell
1503      * renderer component for the cell over which the event occurred, returning
1504      * its tooltip text, if any. This implementation allows you to specify
1505      * tooltip text on the cell level, by using {@code setToolTipText} on your
1506      * cell renderer component.
1507      * <p>
1508      * <strong>Note:</strong> For <code>JList</code> to properly display the
1509      * tooltips of its renderers in this manner, <code>JList</code> must be a
1510      * registered component with the <code>ToolTipManager</code>. This registration
1511      * is done automatically in the constructor. However, if at a later point
1512      * <code>JList</code> is unregistered, by way of a call to
1513      * {@code setToolTipText(null)}, tips from the renderers will no longer display.
1514      *
1515      * @param event the {@code MouseEvent} to fetch the tooltip text for
1516      * @see JComponent#setToolTipText
1517      * @see JComponent#getToolTipText
1518      */
1519     @SuppressWarnings("deprecation")
1520     public String getToolTipText(MouseEvent event) {
1521         if(event != null) {
1522             Point p = event.getPoint();
1523             int index = locationToIndex(p);
1524             ListCellRenderer<? super E> r = getCellRenderer();
1525             Rectangle cellBounds;
1526 
1527             if (index != -1 && r != null && (cellBounds =
1528                                getCellBounds(index, index)) != null &&
1529                                cellBounds.contains(p.x, p.y)) {
1530                 ListSelectionModel lsm = getSelectionModel();
1531                 Component rComponent = r.getListCellRendererComponent(
1532                            this, getModel().getElementAt(index), index,
1533                            lsm.isSelectedIndex(index),
1534                            (hasFocus() && (lsm.getLeadSelectionIndex() ==
1535                                            index)));
1536 
1537                 if(rComponent instanceof JComponent) {
1538                     MouseEvent      newEvent;
1539 


< prev index next >