Return the JList relative Y coordinate of the origin of the specified row or -1 if row isn't valid.

return	The Y coordinate of the origin of row, or -1.
See also	getRowHeight, updateLayoutState

Convert the JList relative coordinate to the row that contains it, based on the current layout. If y0 doesn't fall within any row, return -1.

return	The row that contains y0, or -1.
See also	getRowHeight, updateLayoutState

Creates an instance of ListDataListener that's added to the JLists by model as needed. Subclasses can override this method to return a custom ListDataListener, e.g.

 class MyListUI extends BasicListUI {
    protected ListDataListener createListDataListener() {
        return new MyListDataListener();
    }
    public class MyListDataListener extends ListDataHandler {
        public void contentsChanged(ListDataEvent e) {
            // do some extra work when the models contents change
            super.contentsChange(e);
        }
    }
 }
 

See also

javax.swing.event.ListDataListener, getModel, installUI

Creates an instance of ListSelectionHandler that's added to the JLists by selectionModel as needed. Subclasses can override this method to return a custom ListSelectionListener, e.g.

 class MyListUI extends BasicListUI {
    protected ListSelectionListener createListSelectionListener() {
        return new MySelectionListener();
    }
    public class MySelectionListener extends ListSelectionHandler {
        public void valueChanged(ListSelectionEvent e) {
            // do some extra work when the selection changes
            super.valueChange(e);
        }
    }
 }
 

See also

javax.swing.plaf.basic.BasicListUI.ListSelectionHandler, installUI

Creates a delegate that implements MouseInputListener. The delegate is added to the corresponding java.awt.Component listener lists at installUI() time. Subclasses can override this method to return a custom MouseInputListener, e.g.

 class MyListUI extends BasicListUI {
    protected MouseInputListener createMouseInputListener() {
        return new MyMouseInputHandler();
    }
    public class MyMouseInputHandler extends MouseInputHandler {
        public void mouseMoved(MouseEvent e) {
            // do some extra work when the mouse moves
            super.mouseMoved(e);
        }
    }
 }
 

See also

javax.swing.plaf.basic.BasicListUI.MouseInputHandler, installUI

Creates an instance of PropertyChangeHandler that's added to the JList by installUI(). Subclasses can override this method to return a custom PropertyChangeListener, e.g.

 class MyListUI extends BasicListUI {
    protected PropertyChangeListener createPropertyChangeListener() {
        return new MyPropertyChangeListener();
    }
    public class MyPropertyChangeListener extends PropertyChangeHandler {
        public void propertyChange(PropertyChangeEvent e) {
            if (e.getPropertyName().equals("model")) {
                // do some extra work when the model changes
            }
            super.propertyChange(e);
        }
    }
 }
 

See also

java.beans.PropertyChangeListener, installUI

Returns a new instance of BasicListUI. BasicListUI delegates are allocated one per JList.

return

A new ListUI implementation for the Windows look and feel.

Initialize JList properties, e.g. font, foreground, and background, and add the CellRendererPane. The font, foreground, and background properties are only set if their current value is either null or a UIResource, other properties are set if the current value is null.

See also

uninstallDefaults, installUI, javax.swing.CellRendererPane

Registers the keyboard bindings on the JList that the BasicListUI is associated with. This method is called at installUI() time.

See also

installUI

Create and install the listeners for the JList, its model, and its selectionModel. This method is called at installUI() time.

See also

installUI, uninstallListeners

Initializes this.list by calling installDefaults(), installListeners(), and installKeyboardActions() in order.

See also

installDefaults, installListeners, installKeyboardActions

Returns the cell index in the specified JList closest to the given location in the list's coordinate system. To determine if the cell actually contains the specified location, compare the point against the cell's bounds, as provided by getCellBounds. This method returns -1 if the list's model is empty.

Throws

NullPointerException: if location is null

If updateLayoutStateNeeded is non zero, call updateLayoutState() and reset updateLayoutStateNeeded. This method should be called by methods before doing any computation based on the geometry of the list. For example it's the first call in paint() and getPreferredSize().

See also

updateLayoutState

Paint the rows that intersect the Graphics objects clipRect. This method calls paintCell as necessary. Subclasses may want to override these methods.

See also

paintCell

Paint one List cell: compute the relevant state, get the "rubber stamp" cell renderer component, and then use the CellRendererPane to paint it. Subclasses may want to override this method rather than paint().

See also

paint

Selected the previous row and force it to be visible.

See also

ensureIndexIsVisible

Selected the previous row and force it to be visible.

See also

ensureIndexIsVisible

Set the JList properties that haven't been explicitly overridden to null. A property is considered overridden if its current value is not a UIResource.

See also

installDefaults, uninstallUI, javax.swing.CellRendererPane

Unregisters keyboard actions installed from installKeyboardActions. This method is called at uninstallUI() time - subclassess should ensure that all of the keyboard actions registered at installUI time are removed here.

See also

installUI

Remove the listeners for the JList, its model, and its selectionModel. All of the listener fields, are reset to null here. This method is called at uninstallUI() time, it should be kept in sync with installListeners.

See also

uninstallUI, installListeners

Uninitializes this.list by calling uninstallListeners(), uninstallKeyboardActions(), and uninstallDefaults() in order. Sets this.list to null.

See also

uninstallListeners, uninstallKeyboardActions, uninstallDefaults

Recompute the value of cellHeight or cellHeights based and cellWidth, based on the current font and the current values of fixedCellWidth, fixedCellHeight, and prototypeCellValue.

See also

maybeUpdateLayoutState

Returns the baseline.

Throws	NullPointerException: if c is null
Throws	IllegalArgumentException: if width or height is < 0
since	1.6
See also	getBaseline(int, int)

Returns an enum indicating how the baseline of the component changes as the size changes.

Throws	NullPointerException: if c is null
since	1.6
See also	getBaseline(int, int)

The preferredSize of the list depends upon the layout orientation.

Layout Orientation	Preferred Size
JList.VERTICAL	The preferredSize of the list is total height of the rows and the maximum width of the cells. If JList.fixedCellHeight is specified then the total height of the rows is just (cellVerticalMargins + fixedCellHeight) * model.getSize() where rowVerticalMargins is the space we allocate for drawing the yellow focus outline. Similarly if fixedCellWidth is specified then we just use that.
JList.VERTICAL_WRAP	If the visible row count is greater than zero, the preferredHeight is the maximum cell height * visibleRowCount. If the visible row count is <= 0, the preferred height is either the current height of the list, or the maximum cell height, whichever is bigger. The preferred width is than the maximum cell width * number of columns needed. Where the number of columns needs is list.height / max cell height. Max cell height is either the fixed cell height, or is determined by iterating through all the cells to find the maximum height from the ListCellRenderer.
JList.HORIZONTAL_WRAP	If the visible row count is greater than zero, the preferredHeight is the maximum cell height * adjustedRowCount. Where visibleRowCount is used to determine the number of columns. Because this lays out horizontally the number of rows is then determined from the column count. For example, lets say you have a model with 10 items and the visible row count is 8. The number of columns needed to display this is 2, but you no longer need 8 rows to display this, you only need 5, thus the adjustedRowCount is 5. If the visible row count is <= 0, the preferred height is dictated by the number of columns, which will be as many as can fit in the width of the JList (width / max cell width), with at least one column. The preferred height then becomes the model size / number of columns * maximum cell height. Max cell height is either the fixed cell height, or is determined by iterating through all the cells to find the maximum height from the ListCellRenderer.

The above specifies the raw preferred width and height. The resulting preferred width is the above width + insets.left + insets.right and the resulting preferred height is the above height + insets.top + insets.bottom. Where the Insets are determined from list.getInsets().

c	The JList component.
return	The total size of the list.

Returns the height of the specified row based on the current layout.

return	The specified row height or -1 if row isn't valid.
See also	convertYToRow, convertRowToY, updateLayoutState