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java.lang.Objectcom.sciapp.table.SortTableRenderer
public abstract class SortTableRenderer
SortTableRenderer is responsible for drawing the columns of the table header. The getTableCellRendererComponent method defined in the TableCellRenderer interface returns the component used in drawing the header. Subclasses of SortTableRenderer need implement prepareRenderer, which should return the appropriate component according to which sorting method is used: ascending, descending or no sorting.
Constructor Summary | |
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SortTableRenderer()
Constructs a SortTableRenderer object to be used in drawing the columns of the table header. |
Method Summary | |
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Component |
getTableCellRendererComponent(JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column)
Returns the component used for drawing the cell. |
abstract Component |
prepareRenderer(int sortIndex,
boolean ascending,
int sortSize,
boolean isPressed,
Object value,
int column)
Prepares and returns the component used for drawing the column header according to the method's arguments. |
abstract void |
updateUI()
Called whenever the UI changes, in order to update the components used to draw the columns of the table header. |
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 SortTableRenderer()
Method Detail |
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public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
getTableCellRendererComponent
in interface TableCellRenderer
table
- the JTable
that is asking the
renderer to draw; can be null
value
- the value of the cell to be rendered. It is
up to the specific renderer to interpret
and draw the value. For example, if
value
is the string "true", it could be rendered as a
string or it could be rendered as a check
box that is checked. null
is a
valid valueisSelected
- true if the cell is to be rendered with the
selection highlighted; otherwise falsehasFocus
- if true, render cell appropriately. For
example, put a special border on the cell, if
the cell can be edited, render in the color used
to indicate editingrow
- the row index of the cell being drawn. When
drawing the header, the value of
row
is -1column
- the column index of the cell being drawnpublic abstract Component prepareRenderer(int sortIndex, boolean ascending, int sortSize, boolean isPressed, Object value, int column)
sortIndex
- the sorting order of the column. -1 indicates no sorting.ascending
- flag that is true if ascending sorting is in use, false if descending.sortSize
- the total number of sorting columns.isPressed
- flag that is true if the column is being pressed with the mouse.value
- the value of the header column.column
- the column being drawn.public abstract void updateUI()
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