javax.swing.plaf
Class ListUIjava.lang.Object | +--javax.swing.plaf.ComponentUI | +--javax.swing.plaf.ListUI
- Direct Known Subclasses:
- BasicListUI, MultiListUI
- public abstract class ListUI
- extends ComponentUI
The JList pluggable look and feel delegate. This interface adds methods that allow the JList component to map locations, e.g. mouse coordinates, to list cells and from cell indices to the bounds of the cell.
Constructor Summary
ListUI()
Method Summary
abstract Rectangle getCellBounds(JList list, int index1, int index2)
Returns the bounds of the specified item in JList coordinates, null if index isn't valid.abstract Point indexToLocation(JList list, int index)
Returns the origin of the specified item in JList coordinates, null if index isn't valid.abstract int locationToIndex(JList list, Point location)
Convert a point in JList coordinates to the closest index of the cell at that location.
Methods inherited from class javax.swing.plaf.ComponentUI contains, createUI, getAccessibleChild, getAccessibleChildrenCount, getMaximumSize, getMinimumSize, getPreferredSize, installUI, paint, uninstallUI, update
Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
ListUI
public ListUI()
Method Detail
locationToIndex
public abstract int locationToIndex(JList list, Point location)
- Convert a point in JList coordinates to the closest index of the cell at that location. To determine if the cell actually contains the specified location use a combination of this method and getCellBounds. Returns -1 if the model is empty.
- Parameters:
- location - The JList relative coordinates of the cell
- Returns:
- The index of the cell at location, or -1.
indexToLocation
public abstract Point indexToLocation(JList list, int index)
- Returns the origin of the specified item in JList coordinates, null if index isn't valid.
- Parameters:
- index - The index of the JList cell.
- Returns:
- The origin of the index'th cell.
getCellBounds
public abstract Rectangle getCellBounds(JList list, int index1, int index2)
- Returns the bounds of the specified item in JList coordinates, null if index isn't valid.
- Returns:
- The bounds of the index'th cell.