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Christa Schneider · Guest

Hi,

I'am trying to change the Header of a JdbTable. If I do the same with a
JTable it works fine.
Can anybody help me?

Here is the example:
....
TableCellRenderer rd = new CSCheckBoxHeader();
table.getColumnModel().getColumn(1).setHeaderRenderer(rd);
....

public class CSCheckBoxHeader extends JCheckBox implements TableCellRenderer
{

public CSCheckBoxHeader() {
super();
}

public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean
hasfocus,
int row, int col) {
....
//header.addMouseListener(this);
return this;
}

Thanks...

Kevin Dean [TeamB] · Guest

Christa Schneider wrote:

Christa Schneider · Guest

Hi,
thanks for the answer, but this is not my problem.
I will write a new HeaderRenderer with a JCheckbox. The example with the new
Renderer works with JTable but not with JdbTable and I don't know why.
Maybe anyone have had the same problem...
Thanks
Christa

"Kevin Dean [TeamB]" <NkOdSePaAnM (AT) datadevelopment (DOT) com> schrieb im
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Olaf Raether · Guest

From my point of view you have to override the method

public void createDefaultColumnsFromModel()

from JDbTable. In this method everything happens.I hope you have
enterprise version, and you are able to take a look at the source of
JdbTable. There you find the "setHeaderRenderer" method.

Then you have a write a method that looks similar like this.

public void createDefaultColumnsFromModel() {
super.createDefaultColumnsFromModel();
Object identifier=null;
for (int i=0;i<this.getDataSet().getColumnCount();i++) {
identifier = this.getDataSet().getColumn(i).getColumnName();
getColumn(identifier).setHeaderRenderer(new YourRenderer());
}
}

This code is not complete. But i think this one possible solution and
give you a hint.

Hope this helps.

Olaf Raether

Christa Schneider wrote:

Christa Schneider · Guest

Hallo,

thank you very much for this info, it works!

Christa Schneider

Here the Sourcecode for all they have the same problems:

public class CSCheckBoxHeader
extends JPanel
implements TableCellRenderer {
JCheckBox chkSel = new JCheckBox();
JButton cmdTitle = new JButton();
Object obj;

public CSCheckBoxHeader(Object obj) {
super();
this.obj = obj;
cmdTitle.setMargin(new Insets(1, 1, 1, 1));
setLayout(new BorderLayout(0, 0));
add(chkSel, BorderLayout.WEST);
add(cmdTitle, BorderLayout.CENTER);
}

public CSCheckBoxHeader(Object obj, String fontName, int attr, int size) {
super();
this.obj = obj;
setLayout(new BorderLayout(0, 0));
cmdTitle.setMargin(new Insets(1, 1, 1, 1));
cmdTitle.setFont(new Font(fontName, attr, size));
add(chkSel, BorderLayout.WEST);
add(cmdTitle, BorderLayout.CENTER);

}

public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected,
boolean hasfocus,
int row, int col) {
cmdTitle.setText( (String) obj);
return this;
}

public JCheckBox getCheckBox() {
return chkSel;
}

public void setSelected(boolean wert) {
chkSel.setSelected(wert);
}

public boolean isSelected() {
return chkSel.isSelected();
}
}

public class CSJdbTable
extends JdbTable
implements MouseListener {
Vector v = new Vector(); // merkt sich die HeaderRenderer
boolean first = true; //Renderer nur beim ersten Mal aufbauen
public CSJdbTable() {
}

public CSJdbTable(Object rows[][], Object header[]) {
super(rows, header);
}

/*
overriding function in JdbTable
da die Funktion bei jedem click auf den Header ausgelöst wird,
muss hier abgefragt werden, ob bereits ein HeaderRenderer besteht,
damit dieser nicht jedesmal neu angelegt wird
*/

public void createDefaultColumnsFromModel() {
Object identifier = null;
super.createDefaultColumnsFromModel();

if (this.getDataSet() != null) {

for (int i = 0; i < this.getDataSet().getColumnCount(); i++) {
try {
identifier = this.getDataSet().getColumn(i).getColumnName();
String caption = this.getDataSet().getColumn(i).getCaption();
if (first && identifier != null &&
this.getDataSet().getColumn(i).isHidden() == false) {
CSCheckBoxHeader chk = new
CSCheckBoxHeader(caption,"Dialog",Font.PLAIN,10);
v.add(chk);
getColumn(identifier).setHeaderRenderer(chk);
}
else {
getColumn(identifier).setHeaderRenderer( (CSCheckBoxHeader)
v.get(i));
}
}

catch (IllegalArgumentException ex) {
}

}

if (first) {
first = false;
}

}
}

public boolean isSelectedHeader(int pos) {
Object identifier = null;
if(this.getDataSet().getColumn(pos).isHidden() == true) {
return false;
}
else {
identifier = this.getDataSet().getColumn(pos).getColumnName();
CSCheckBoxHeader chk = (CSCheckBoxHeader) getColumn(identifier).
getHeaderRenderer();
return chk.isSelected();
}
}

/*
overriding JdbTable mouseClicked
um den Renderer unabhängig von der Sortierung zu verwenden, muss die
Position
berechnet werden.
Bei einem click auf die Checkbox wird aktiviert/deaktiviert
Bei click auf den Spaltentitel, wird die Spalte sortiert
*/

public void mouseClicked(MouseEvent e) {
int tableColumn = getTableHeader().columnAtPoint(e.getPoint());
boolean sort = true;
int pos = this.getTableHeader().getColumnModel().getColumn(tableColumn).
getWidth();
Rectangle rec = this.getTableHeader().getHeaderRect(tableColumn);

if (e.getSource() == getTableHeader() &&
tableColumn != -1 && e.getX() <= rec.getX() + 20) {
sort = false;
JTableHeader hd = this.getTableHeader();
TableCellRenderer rend = hd.getColumnModel().getColumn(tableColumn).
getHeaderRenderer();

if (rend instanceof CSCheckBoxHeader) {
if ( ( (CSCheckBoxHeader) rend).isSelected()) {
( (CSCheckBoxHeader) rend).setSelected(false);
}
else {
( (CSCheckBoxHeader) rend).setSelected(true);
}
}
}

else {
super.mouseClicked(e);
}
}
}

"Olaf Raether" <olaf (AT) epro (DOT) de> schrieb im Newsbeitrag
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