- java.lang.Object
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- javax.swing.plaf.ComponentUI
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- javax.swing.plaf.ListUI
 
 
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- Direct Known Subclasses:
- BasicListUI,- MultiListUI
 
 public abstract class ListUI extends ComponentUI TheJListpluggable look and feel delegate.
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Constructor SummaryConstructors Constructor Description ListUI()
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Method SummaryAll Methods Instance Methods Abstract Methods Modifier and Type Method Description abstract RectanglegetCellBounds(JList<?> list, int index1, int index2)Returns the bounding rectangle, in the given list's coordinate system, for the range of cells specified by the two indices.abstract PointindexToLocation(JList<?> list, int index)Returns the origin in the givenJList, of the specified item, in the list's coordinate system.abstract intlocationToIndex(JList<?> list, Point location)Returns the cell index in the specifiedJListclosest to the given location in the list's coordinate system.- 
Methods declared in class javax.swing.plaf.ComponentUIcontains, createUI, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, installUI, paint, uninstallUI, update
 
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Method Detail- 
locationToIndexpublic abstract int locationToIndex(JList<?> list, Point location) Returns the cell index in the specifiedJListclosest 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 bygetCellBounds. This method returns-1if the list's model is empty.- Parameters:
- list- the list
- location- the coordinates of the point
- Returns:
- the cell index closest to the given location, or -1
- Throws:
- NullPointerException- if- locationis null
 
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indexToLocationpublic abstract Point indexToLocation(JList<?> list, int index) Returns the origin in the givenJList, of the specified item, in the list's coordinate system. Returnsnullif the index isn't valid.- Parameters:
- list- the list
- index- the cell index
- Returns:
- the origin of the cell, or null
 
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getCellBoundspublic abstract Rectangle getCellBounds(JList<?> list, int index1, int index2) Returns the bounding rectangle, in the given list's coordinate system, for the range of cells specified by the two indices. The indices can be supplied in any order.If the smaller index is outside the list's range of cells, this method returns null. If the smaller index is valid, but the larger index is outside the list's range, the bounds of just the first index is returned. Otherwise, the bounds of the valid range is returned.- Parameters:
- list- the list
- index1- the first index in the range
- index2- the second index in the range
- Returns:
- the bounding rectangle for the range of cells, or null
 
 
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