Things that i am trying to achieve:
Select the row and add in values, the first value at col=0 will determine what will generate at col=2 and what col=2 value is will generate values for col=3.
To achieve what i have said on the selected row, for example if i have more than 2 rows of data which is empty. When i fill in the first row of data, the second row of data should be remain untouched. The second row of values are only generated when i click of the second row value.
Lastly this is just another button that i have which is a "save" button where it will retrieve the data from the table and store it. However i am getting this problem where when my mouse is still selected on the cell, that selected cell value is not being passed in and stored. So is there a way when i click the button, i can deselect the cell?. Side note i have used clearSelection and it does not work.
Currently what i have:
At the moment i managed to do the change where when i click a value from the col=0 and it will update the value for col=1. However i am now stuck at how i am going to get the value from the col=1 to generate my values for col=3 which is the last col. I have tried adding another if else in the method however that does not work.
At the moment the values i add in are combobox these combobox values are derived from a method that passes in the selection choice of the values from their respective cols.
Method for table listener:
public static void TableListen(JTable Model,SQLObject so){
Model.getModel().addTableModelListener(new TableModelListener() {
public void tableChanged(TableModelEvent evt) {
if(Model.getModel().getRowCount()!=0){
if(Model.getSelectedColumn()==0){
if(!Model.getModel().getValueAt( Model.getSelectedRow(), 0).toString().equals("-Selection-")){
String treatmentChoice=Model.getModel().getValueAt(Model.getSelectedRow(), Model.getSelectedColumn()).toString();
JComboBox<String> comboBox = null;
TableColumn feedingCol=Model.getColumnModel().getColumn(1);
comboBox=DosageObject.GetListOfMedication(so,treatmentChoice);
feedingCol.setCellEditor(new DefaultCellEditor(comboBox));
}
}
}
}
});
}
Related
I am currently using a JTable to display a few patient details. I have a JCheckBox, that when ticked adds a new column to the table and adds the data to the new column. When it is unticked, it should remove the column, sort of like adding extra filters to the table. However, when I tick the box again after unticking it, it duplicates the columns in the table.
I tried to use the fireTableStructureChanged() method, but it would never update the table and so the columns stay there even if the checkbox was unticked. But if I remove it, then when I untick the the checkbox it works, but then the duplication problem comes back. I pasted my actionPerformed() method for when the checkbox is ticked. The first image is of my table before I click my Checkbox. The second is when I click the Checkbox and the column is added. Lastly the third is when I untick the checkbox and tick again. Any help will be much appreciated.
#Override
public void actionPerformed(ActionEvent e)
{
if (gui.getChkCholesterol().isSelected() == true)
{
try {
gui.getRightTableModel().addColumn("Cholesterol");
newColumnIndeces.put("2093-3",gui.getRightTable().getColumnCount()-1);
gui.getRightTableModel().addColumn("Cholesterol Effective Date/Time");
newColumnIndeces.put("2093-3e",gui.getRightTable().getColumnCount()-1);
if(gui.getRightTable().getRowCount()>0)
{
int columnNumberValue = newColumnIndeces.get("2093-3");
int columnNumberDate = newColumnIndeces.get("2093-3e");
for (int i = 0; i<gui.getRightTable().getRowCount(); i++)
{
String value = op.getPatientObservationValue(gui.getRightTable().getValueAt(i,0).toString(),"2093-3");
String date = op.getPatientObservationEffectiveDate(gui.getRightTable().getValueAt(i,0).toString(),"2093-3");
gui.getRightTableModel().setValueAt(value, i, columnNumberValue);
gui.getRightTableModel().setValueAt(date, i, columnNumberDate);
}
}
} catch (ParseException parseException) {
parseException.printStackTrace();
}
setCellColourForTable();
timer.schedule(new RefreshTable(), 0, seconds);
}
else
{
gui.getRightTable().removeColumn(gui.getRightTable().getColumnModel().getColumn(newColumnIndeces.get("2093-3")));
gui.getRightTable().removeColumn(gui.getRightTable().getColumnModel().getColumn(newColumnIndeces.get("2093-3e")-1));
newColumnIndeces.remove("2093-3");
newColumnIndeces.remove("2093-3e");
timer.cancel();
timer = new Timer();
}
gui.getRightTableModel().fireTableStructureChanged();
}
You add a column to the model by using:
gui.getRightTableModel().addColumn("Cholesterol");
This will notify the view that the data has changed and the table will also be updated.
However, you remove the column from the table using:
gui.getRightTable().removeColumn(…);
This only removes the column from the "table view". The column has not been removed from the DefaultTableModel. So the next time you add a column it just gets added to the end of the DefaultTableModel.
So the solution is to remove the column from the DefaultTableModel, not the table.
Unfortunately there is no removeColumn(…) method.
However because your requirement is to only add/remove columns from the end of the DefaultTableModel you can use:
model.setColumnCount(model.getColumnCount() - 2);
which will effectively remove the last two columns from the model.
The other option is to not keep adding columns to the DefaultTableModel, but instead you can just add/remove TableColumns from the TableColumnModel directly. So this would mean the data for the Cholestoral column would always be in the model, but the view would just not display the columns.
So instead of using the model.addColumn(…) you would use the table.addColumn(…) method.
I have a jtable, in which I keep certain information, and I have a 'clear' button that cleans all the information in the table.
The problem is, when I double click on a cell in the table and then I press the clear button, the table is emptied correctly but the selected cell continues appearing in the table as if it had not been deleted. As you can see in the next screenshot.
This is the java code i use to clear the information of the jtable:
public void resetArea(JTable tabla) {
DefaultTableModel dm = (DefaultTableModel)tabla.getModel();
while(dm.getRowCount() > 0) {
dm.removeRow(0);
}
}
That is caused as the cell editor is still shown. First do:
tabla.removeEditor();
Try this
DefaultTableModel dm = (DefaultTableModel)tabla.getModel();
while(dm.getRowCount() > 0) {
dm.removeRow(dm.getRowCount()-1);
}
I am having trouble with calculating the sum of my table column whenever a row is added or deleted. I have a button which adds a row to the table, and I want the sum of the to be automatically calculated and displayed in a text field. I have made a method getsum for the calculation and the am calling this method on the actionperformed event of the button. I am getting an error when I run the program and nothing is displayed in the text field.
Add a TableModelListener to your table. That way, the text field will get updated every time the table's model changes.
model.addTableModelListener(new TableModelListener() {
#Override
public void tableChanged(TableModelEvent e) {
textField.setText(getSum());
}
});
you have to call .setText function of the particular textField to bind the value u obtain onto it.
I need a listener on a CombobBox which is a cellEditor on a JTable.
This listener must give me the new selected value and the row id.
Problem with my below solution is that the listner is linked to all rows, so when I change one ComboBox value in one row, then move to another row (with a different combo value) an event is raised, but the selected row has not yet changed. How can I get rid of this case ?
Thanks
column = jTableCheck.getColumnModel().getColumn(9);
JComboBox comboBox = new JComboBox(comboGenre);
comboBox.addItemListener(new ItemListener(){
#Override
public void itemStateChanged(ItemEvent e) {
if (e.getStateChange() == ItemEvent.SELECTED) {
int row = jTableCheck.getSelectedRow();
Popup.info(e.getItem() + " SELECTED, row="+row);
}
}
});
column.setCellEditor(new DefaultCellEditor(comboBox));
Don't use an ItemListener on the combo box.
Instead you should be using a TableModelListener. An event will be fired whenever the data in the TableModel is changed. So you add the TableModelListener to the TableModel of your JTable.
The TableModelEvent will give your row/column of the cell that changed. You can get the changed value from the TableModel.
Or maybe you would want to use a Table Cell Listener which is similar to the TableModelListener except the code is only invoked when the value is actually changed and you use an Action to do the processing.
In fact, I already used a TableCellListener on another table, but forgot about that!
I found out a usefull class here: http://tips4java.wordpress.com/2009/06/07/table-cell-listener/
I have a JTable with several columns. I override the getColumnClass method of the table model in order to specify which columns hold Integer values. So basically when a user tries to enter a String into an Integer column, he/she is not allowed to do so. The problem is that the user can still click on a button on my form which then uses the improper value in that cell.
How can I not allow the user to click on any buttons as long as one of the cells in the table is still being edited?
Add a PropertyChangeListener to the JTable:
#Override
public void propertyChange(PropertyChangeEvent e)
{
// A cell has started/stopped editing
if ("tableCellEditor".equals(e.getPropertyName()))
{
if (table.isEditing())
// disable buttons;
else
// enable buttons;
}
}
Or, if you don't want to disable the buttons, you can just add code to the ActionListener to check if the table.isEditing() and if so then just return.
You could use one of the 3 methods returning information on the editing process to enable your button.
JTable table = new JTable();
table.getEditingColumn();
table.getEditingRow();
table.getEditorComponent();
Check JTable documentation to see which could be best used for your case. You could make your button enabled only if
table.getEditorComponent();
returns null for example.
add a TableModelListener to your JTable
you should override its tableChanged method somewhat like this :
public void tableChanged(TableModelEvent e) {
int row = e.getFirstRow();
int column = e.getColumn();
TableModel model = (TableModel)e.getSource();
String columnName = model.getColumnName(column);
Object data = model.getValueAt(row, column);
//Check the data!!!
//Check the data!!!
//Check the data!!!
//disable the button if needed right here
}
ref:http://docs.oracle.com/javase/tutorial/uiswing/components/table.html#modelchange