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Préférences
Moteurs de recherche
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JavaTM 2 Platform Std. Ed. v1.6.0
javax.swing.plaf
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Constructor Summary | |
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ListUI()
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Method Summary | |
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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. |
abstract Point |
indexToLocation(JList list,
int index)
Returns the origin in the given JList , of the specified item,
in the list's coordinate system. |
abstract int |
locationToIndex(JList list,
Point location)
Returns the cell index in the specified JList closest to the
given location in the list's coordinate system. |
Methods inherited from class javax.swing.plaf.ComponentUI |
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contains, createUI, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, installUI, paint, uninstallUI, update |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ListUI()
Method Detail |
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public abstract int locationToIndex(JList list, Point location)
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.
list
- the listlocation
- the coordinates of the point
-1
NullPointerException
- if location
is nullpublic abstract Point indexToLocation(JList list, int index)
JList
, of the specified item,
in the list's coordinate system.
Returns null
if the index isn't valid.
list
- the listindex
- the cell index
null
public abstract Rectangle getCellBounds(JList list, int index1, int index2)
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.
list
- the listindex1
- the first index in the rangeindex2
- the second index in the range
null