interface org.aswing.ListCellFactory
| Implementors | ||||||
 | DefaultListTextCellFactory, GeneralListCellFactory |
| ||||
List cell renderer factory, a ListCellFactory should not change it
return value of these method isAllCellHasSameHeight,
getCellHeight after created. Mean, if one of its instance
method isAllCellHasSameHeight returned false, it should always return false.
@author paling
Instance Fields
function getCellHeight(): Int
If isAllCellHasSameHeight or isShareCells returns true,
this method will be used, it returned value means each cell's same height.
| returns | the height for every cells |
function isAllCellHasSameHeight(): Bool
Returns is all cells has same height.
If all cells has same height, the List component will has more efficient on speed.
If this method return true, the List component will set all list cells height
what getCellHeight returned,
otherwise, the getPreferredSize() of list cell's component will be used.
If shareCells, this method must return true.
@see #isShareCells()
| returns | is all cells has same height. |
function isShareCells(): Bool
Returns is list data should share cell instances for items.
If this return true, the List component will just create enough cell instance to display viewable items. This may cause the List component have shorter time to create, but may get slow when scrolling.
If this return false, the List component will create cells instances for every value of the list. This may cause the List component have hard time to create with huge list, but may get fast when scrolling.
Ordinary, if your List component will hold a very huge list(more than 100), you many need a isAllCellHasSameHeight
and shareCells factory. If your list will just hold a small list(less than 50), and you want a smooth scrolling,
you may need a not shareCells factory, and in this case, allCellHasSameHeight is not matter
with speed, just matter whether you need different height items.
Note that if shareCells, allCellHasSameHeight must be true
@see #createNewCell()
| returns | is share cell instances. |