Help creating tables with multi line cells (variable height cells)

Question

Hi -
I am trying to create a table where the row height of various rows might not
be one unit (i.e. there would be wrap around text) but I DO NOT want every cell
to be the same height. i.e. I only want rows with wrap around to be taller.
What I have done already is
- Create a new text renderer and set it as default table renderer.
- played around with the table.serRowHeight method.
what I noticed is this. If i call
table.setRowHeight (32);
All the rows will be a height of 32 which is expected.
However, if I do something like:
table.setRowHeight (0,16);
table.setRowHeight (1,32);
All the rows render as height 16.
I am trying to do this on the fly so to speak. I am setting the table model
fully and then listening to the tableModelChanged event and then want to
adjust the rows accordingly.
I have below listed the code snippit and what i WANT to do and what only seems
to work:
public void tableChanged(TableModelEvent e) {
int rows = table.getRowCount();
//// Using the api i would expect this to make each row taller
for (int i = 0; i < rows; ++i) {
table.setRowHeight(i,16+16*i);
//// However this one alone makes then all the same height.
//// I do not want this but want the snippit of code above to work
//// if possible
table.setRowHeight(32);
Thanks in advance....
matt

Answer 1

Hi bbrita
Sorry for the confusion. But basically yes the code below in my system does NOT
work. In my model i have
public class ApplicationTableModel extends AbstractTableModel {
//// other stuff here
public void setApplicationData(SimpleApplication[] appData) {
//// set the new data here
this.fireTableDataChanged();
and then it does call :
tableChanged(TableModelEvent e)
and in there i DO change the heights of the cells but they still all render the same height.
The basic code snippits I am useing are:
//// in my table model
public class ApplicationTableModel extends AbstractTableModel {
//// other stuff here
public void setApplicationData(SimpleApplication[] appData) {
//// set the new data here
this.fireTableDataChanged();
//// in the panel i create the table
public class ApplicationDataTablePanel extends JPanel
implements ListSelectionListener, TableModelListener {
//// other stuff here...
public ApplicationDataTablePanel() {
appModel = new ApplicationTableModel();
table = new JTable(appModel);
table.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
table.getSelectionModel().addListSelectionListener(this);
table.getModel().addTableModelListener(this);
// not used at the moment
// table.setDefaultRenderer(Object.class, new MultiLineCellRenderer());
this.add(new JScrollPane(table));
public void tableChanged(TableModelEvent e) {
System.err.println("GET Row count="+table.getRowCount());
for (int i=0; i<table.getRowCount(); i++) table.setRowHeight(i,i*3+10);
/// not used
// table.invalidate();
for (int i=0; i<table.getRowCount(); i++)
System.err.println("HEIGHT="+table.getRowHeight(i));
This does dump to the screen the following (i have triggered something in the
system to update the model):
GET Row count=5
HEIGHT=10
HEIGHT=13
HEIGHT=16
HEIGHT=19
HEIGHT=22
Which is what I expect BUT the cells do not change in height (they are all the
standard size). This is what is baffling me because it seems to be the thing
you suggested below but does not work. Which seems like exactly what
should work.
I was wondering if there was somewhere else in the event flow that I should be
making these modifications or if I needed to for force any refresh or anything on
the graph cells. ???
Thanks so much for the help and any more you might have.
matt