DefaultTableCellRenderer
, DefaultTableCellRenderer.UIResource
public interface TableCellRenderer
JTable
.Modifier and Type | Method | Description |
---|---|---|
Component |
getTableCellRendererComponent |
Returns the component used for drawing the cell. |
Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
The TableCellRenderer
is also responsible for rendering the the cell representing the table's current DnD drop location if it has one. If this renderer cares about rendering the DnD drop location, it should query the table directly to see if the given row and column represent the drop location:
JTable.DropLocation dropLocation = table.getDropLocation(); if (dropLocation != null && !dropLocation.isInsertRow() && !dropLocation.isInsertColumn() && dropLocation.getRow() == row && dropLocation.getColumn() == column) { // this cell represents the current drop location // so render it specially, perhaps with a different color }
During a printing operation, this method will be called with isSelected
and hasFocus
values of false
to prevent selection and focus from appearing in the printed output. To do other customization based on whether or not the table is being printed, check the return value from JComponent.isPaintingForPrint()
.
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 drawn
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/table/TableCellRenderer.html