WD ALV default cell editor

How do you set a default cell editor for a web dynpro ALV table?

if I want to prevent the tab key from moving the focus to next cell
without satisfying certain conditions, what events or methods should I concentrateYou where given a working example of this in your last posting:
http://forum.java.sun.com/thread.jspa?threadID=642364&messageID=3786315
The example only overrides two methods. Only one of the methods has validation logic. So I would think it would be obvious which method to concentrate on.

Similar Messages

Default cell editor extending problem

hello again,
special thanks to camikr, who has helped me a lot in my problems.
now I will like to know should I implement the default cell editor interface or extend the available class to solve my previous problem of validating table cells?
which methods should I concentrate on? I will certainly work on is cell editable but kindly suggest me if I want to prevent the tab key from moving the focus to next cell without satisfying certain conditions, what events or methods should I concentrate. if I want the tab key to be blocked what action should I take?
thanks
Krishnakant.

if I want to prevent the tab key from moving the focus to next cell
without satisfying certain conditions, what events or methods should I concentrateYou where given a working example of this in your last posting:
http://forum.java.sun.com/thread.jspa?threadID=642364&messageID=3786315
The example only overrides two methods. Only one of the methods has validation logic. So I would think it would be obvious which method to concentrate on.

How to create a context menu in ALV table cell editor(Webdynpro abap )

Hello Experts,
I am having a problem in creating a context menu in a table cell editor in the ALV table output.I have assigned a 'lta' as the cell editor.But befor assigning the lta as cell editor I have assigned the menu to the lta.But when the view is rendered I can see the lta with the actioned assigned to it.But I cannot see the context menu.
The code snippet below:
"Create menu for each coloumn
create OBJECT lo_menu_actions type CL_SALV_WD_VE_MENU EXPORTING
      id = 'MITM_ACTIONS'.
lo_menu_actions->set_visible( value = abap_true ).
lo_menu_actions->set_visible_fieldname( value = 'ACTIONS' ).
"ADd menu items
CREATE OBJECT lo_menu_item_create type CL_SALV_WD_VE_MENU
exporting
    id = 'MITM_CREATE_EXPRESSION'.
lo_menu_item_create->set_visible( value = abap_true ).
lo_menu_item_create->set_visible_fieldname( value = 'Create' ).
"Add item 1
lo_menu_actions->ADD_ITEM( VALUE = lo_menu_item_create ).
" Set the cell editor for each column cell(link to an action)
LOOP AT lt_node_dec_tab_cols INTO ls_node_dec_tab_cols .
    lv_column_name = ls_node_dec_tab_cols-object_name.
    lr_column = lr_column_settings->get_column( lv_column_name ).
   "Create 'lta' Ui item
    CREATE OBJECT lo_lta TYPE cl_salv_wd_uie_link_to_action.
    lo_lta->set_menu( value = lo_menu_actions ).
    lo_lta->set_text_fieldname( lv_column_name ).
    lr_column->set_cell_editor( lo_lta ).
    IF ls_node_dec_tab_cols-is_result EQ abap_true.
      lr_column->set_cell_design( value =
                  cl_wd_table_column=>e_cell_design-key_medium ).
    ENDIF.
ENDLOOP.

Hi Prakash,
I have not come across this requirement till now to have context menu in a cell editor of alv.
Unfortunately the implementation of method SET_MENU of alv ui elements ( ex: cl_salv_wd_uie_text_view ) is not updating alv configurable table, instead it just stores in a global attribute as string. Hence has no effect on context menu.
If your user is very particular about this requirement of having context menu in cell editor, you can go for a normal table. Because, normal table's cell editor has the property to set the menuID as we do it for other ui elements.
Regards,
Rama

ALV table - cell editor??

Hi,
I am facing a strange issue, that my alv table is opening as editable format even i havnt write editable coding in doinit() method. i have written my coding in domodify().
coding as follows:
WHEN 'PRIORITY'.
DATA: lr_column_settings_PRIORITY TYPE REF TO if_salv_wd_column_settings,
        lr_column_PRIORITY    TYPE REF TO cl_salv_wd_column,
        lr_input_field_PRIORITY TYPE REF TO CL_SALV_WD_UIE_DROPDOWN_BY_KEY.
lr_column_settings_PRIORITY ?= lo_value.
lr_column_PRIORITY = lr_column_settings_PRIORITY->get_column( 'PRIORITY').
if MODIFY_PARAM eq ABAP_TRUE.
*Getting the columns settings.
CREATE OBJECT lr_input_field_PRIORITY EXPORTING SELECTED_KEY_FIELDNAME = 'PRIORITY'.
lr_column_PRIORITY->set_cell_editor( lr_input_field_PRIORITY ).
lr_table_settings->set_read_only( abap_false ).
else.
    CREATE OBJECT lr_input_field_PRIORITY EXPORTING SELECTED_KEY_FIELDNAME = 'PRIORITY'.
    lr_input_field_PRIORITY->set_enabled( abap_false ).
lr_column_PRIORITY->set_cell_editor( lr_input_field_PRIORITY ).
lr_table_settings->set_read_only( abap_false ).
ENDIF.
What is wrong in this and how initially table is populating as editable?
Please help me on this issue.
Thanks,
GS

CREATE OBJECT lr_input_field_PRIORITY EXPORTING SELECTED_KEY_FIELDNAME = 'PRIORITY'.
lr_column_PRIORITY->set_cell_editor( lr_input_field_PRIORITY ).
lr_table_settings->set_read_only( abap_false ).
else.
CREATE OBJECT lr_input_field_PRIORITY EXPORTING SELECTED_KEY_FIELDNAME = 'PRIORITY'.
lr_input_field_PRIORITY->set_enabled( abap_false ).
lr_column_PRIORITY->set_cell_editor( lr_input_field_PRIORITY ).
lr_table_settings->set_read_only( abap_false ).
ENDIF.
Write down the Read only property in your code as ABAP_TRUE.

JTable & custom cell editor

Hello everyone,
what is the correct way of writing a custom cell editor for a JTable? I followed the example in the Java tutorial ([How to use tables|http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#editor]), but the result is a bit weird. The code I have is the following:
    private class NumericCellEditor extends AbstractCellEditor implements TableCellEditor {
        NumericFTField field = new NumericFTField(threeDecimalsFormat, 3, null, 1);
        public Component getTableCellEditorComponent(JTable table, Object value,
                boolean isSelected, int row, int col) {
            field.setValue(value);
            return field;
        public Object getCellEditorValue() {
            return field.getValue();
        @Override
        public boolean stopCellEditing() {
            if (((NumericFTField)field).verifyDouble()) {
                field.setBorder(new EmptyBorder(0, 0, 0, 0));
                fireEditingStopped();
                return true;
            } else {
                field.setBorder(BorderFactory.createLineBorder(Color.red));
                return false;
    }where the NumericFTField is a class derived from JFormattedTextField that only allows digits, decimal separator, minus and 'E' to be inserted, and it monitors clipboard operations. verifyDouble() is a method of the NumericFTField class that verifies whether the current input can be parsed to a double and whether it satisfies everything it should. This is then used in
((TableColumn)jTblSpecs.getColumnModel().getColumn(1)).setCellEditor(new NumericCellEditor());The NumericFTField class works great, I use it also in place of a JTextFields, so I'd say there is nothing wrong with it.
After I click in a cell (single click), it behaves a little different that the default cell editor: the cell is not highlighted, but it immediately jumps to the editing state (why???). I, indeed, can insert the allowed characters only. When I click in a cell, do some editing and press Enter, the cell's content gets validated. If it is invalid, stopCellEditing() method does its magic; if it is valid, the caret disappears and everything SEEMS okay. However, if I started typing at this point, the cell reverts to the editing state, but now I am able to enter any character I want. It truly looks like the cell editor is now some other component, not the original NumericFTField one. What is going on here?
It would be great is someone could provide a short schematic source of a custom cell editor class that would work exactly as the JTable's default one except it would only permit digits and so on. It doesn't have to be anything fancy, just a "skeleton" of the class with comments like "input verification here" etc.
I am sorry for any lack of clarity, but I am still a Java newbie.
Any help would be much appreciated.
Best regards,
vt

Hi,
I am also facing the same problem. In addition to what you have specified, my requirement is to be able to select multiple rows for deletion. But, the very first row selected using mouse is not visible as selected though its selected. The other rows are visible as selected.
If you can use any JDK version, start using JDK1.6. You will not be facing this problem. There were so many changes done for swings from JDK 1.4 to 1.6. But, I have to strictly use JDK1.4, but could not find any workaround for this problem.
It would be great if anyone can help me out in this issue to get workaround for this problem.

Problem sorting JTable with custom cell editor

Greetings,
I have created a JTable with a JComboBox as the cell editor for the first column. However, I couldn't simply set the default cell editor for the column to be a JComboBox, since the values within the list were different for each row. So instead, I implemented a custom cell editor that is basically just a hashtable of cell editors that allows you to have a different editor for each row in the table (based on the ideas in the EachRowEditor I've seen in some FAQs - see the code below). I also used a custom table model that is essentially like the JDBCAdapter in the Java examples that populates the table with a query to a database.
The problem comes when I try to sort the table using the TableSorter and TableMap classes recommended in the Java Tutorials on JTables. All of the static (uneditable) columns in the JTable sort fine, but the custom cell editor column doesn't sort at all. I think that the problem is that the hashtable storing the cell editors never gets re-ordered, but I can't see a simple way to do that (how to know the old row index verses the new row index after a sort). I think that I could implement this manually, if I knew the old/new indexes...
Here's the code I use to create the JTable:
// Create the Table Model
modelCRM = new ContactTableModel();
// Create the Table Sorter
sorterCRM = new TableSorter(modelCRM);
// Create the table
tblCRM = new JTable(sorterCRM);
// Add the event listener for the sorter
sorterCRM.addMouseListenerToHeaderInTable(tblCRM);
Then, I populate the column for the custom cell editor like this:
// Add the combo box for editing company
TableColumn matchColumn = getTable().getColumn("Match");
RowCellEditor rowEditor = new RowCellEditor();
// loop through and build the combobox for each row
for (int i = 0; i < getTable().getRowCount(); i++) {
JComboBox cb = new JComboBox();
cb.addItem("New");
//... code to populate the combo box (removed for clarity)
rowEditor.add(i,new DefaultCellEditor(cb, i))); //TF
} // end for
matchColumn.setCellEditor(rowEditor);
Any ideas how to do this, or is there a better way to either sort the JTable or use a combobox with different values for each row? Please let me know if more code would help make this clearer...
Thanks,
Ted
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
public class RowCellEditor implements TableCellEditor
protected Hashtable editors;
protected TableCellEditor editor, defaultEditor;
public RowCellEditor()
editors = new Hashtable();
defaultEditor = new DefaultCellEditor(new JTextField());
public void add(int row, TableCellEditor editor)
editors.put(new Integer(row), editor);
public Component getTableCellEditorComponent(JTable table,
Object value,
boolean isSelected,
int row,
int column)
editor = (TableCellEditor) editors.get(new Integer(row));
if (editor == null)
editor = defaultEditor;
return editor.getTableCellEditorComponent(table,
value,
isSelected,
row,
column);
public Object getCellEditorValue() {
return editor.getCellEditorValue();
public boolean stopCellEditing() {
return editor.stopCellEditing();
public void cancelCellEditing() {
editor.cancelCellEditing();
public boolean isCellEditable(EventObject anEvent) {
return true; //TF
//return editor.isCellEditable(anEvent);
public void addCellEditorListener(CellEditorListener l) {
editor.addCellEditorListener(l);
public void removeCellEditorListener(CellEditorListener l) {
editor.removeCellEditorListener(l);
public boolean shouldSelectCell(EventObject anEvent) {
return editor.shouldSelectCell(anEvent);
-------------------

Well, I found a solution in another post
(see http://forum.java.sun.com/thread.jsp?forum=57&thread=175984&message=953833#955064 for more details).
Basically, I use the table sorter to translate the row index for the hashtable of my custom cell editors. I did this by adding this method to the sorter:
// This method is used to get the correct row for the custom cell
// editor (after the table has been sorted)
public int translateRow(int sortedRowIndex)
checkModel();
return indexes[sortedRowIndex];
} // end translateRow()
Then, when I create the custom cell editor, I pass in a reference to the sorter so that when the getTableCellEditorComponent() method is called I can translate the row to the newly sorted row before returning the editor from the hashtable.

Setting JTable cell editor

Hallo,
I have troubles setting jtable cell edtior. when i run code below, editor stays unchnaged.
Do you know where's the problem, please (except in programmer^_^) ???
import java.awt.*;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
public class Test extends JFrame {
    JTable table;
    Test() {
        // Create table model
        table = new JTable();
        table.setModel(new DefaultTableModel(
            new Object[][] {
                { Boolean.TRUE, Integer.valueOf(10) },
                { "Hallo!", Boolean.FALSE },
            }, new String[] { "Col1", "Col2" }));
        // Setup frame a little
        setLayout(new BorderLayout());
        setBounds(new Rectangle(300,300,200,100));
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        add(table,BorderLayout.CENTER);
         * Two calls below have no effect:-(
         * What did i wrong?
        // set cell editor for all cells
        table.setCellEditor(new DefaultCellEditor(
                new JComboBox(new String[] { "0", "1" }) ));
        // Use checkbox for booleans
        table.setDefaultEditor(Boolean.class, new DefaultCellEditor(
                new JCheckBox() ));
        // Use combobox for strings
        table.setDefaultEditor(String.class, new DefaultCellEditor(
                new JComboBox( new String[] { "Hallo!", "Bye!" } ) ));
    public static void main(String[] arg) {
        Test test = new Test();
        test.setVisible(true);
}

Hi again,
yes it works when i set it for single column, but i'd like to use default editor, because column count is not fixed.
According to documentation: "Sets a default cell editor to be used if no editor has been set in a TableColumn. If no editing is required in a table, or a particular column in a table, uses the isCellEditable method in the TableModel interface to ensure that this JTable will not start an editor in these columns. If editor is null, removes the default editor for this column class."
So when i call
column.setCellEditor(null); in TableColumnModelListener columnAdded event. But still it's not working. See sample below (i've changed it to cell renderer coz result is clear on single view, but problem stays same)
More over problem seems to be with algoritm that decide which class to use. Object takes preference any time. W/o it npe arries.
Regards
Adam
import java.awt.*;
import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
public class Test extends JFrame {
    JTable table;
    Test() {
        // Create table model
        table = new JTable();
        table.setModel(new DefaultTableModel(
            new Object[][] {
                { Boolean.TRUE, Integer.valueOf(10) },
                { "Hallo!", Boolean.FALSE },
            }, new String[] { "Col1", "Col2" }));
        // Setup frame a little
        setLayout(new BorderLayout());
        setBounds(new Rectangle(300,300,200,100));
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        add(table,BorderLayout.CENTER);
        table.setDefaultRenderer(Object.class,new Renderer(Color.YELLOW));
        table.setDefaultRenderer(String.class,new Renderer(Color.BLUE));
        table.setDefaultRenderer(Boolean.class,new Renderer(Color.RED));
        table.setDefaultRenderer(Integer.class,new Renderer(Color.GREEN));
        // use default renderer in all columns
        table.getColumn(table.getColumnName(0)).setCellRenderer(null);
        table.getColumn(table.getColumnName(0)).setCellRenderer(null);
    public static void main(String[] arg) {
        Test test = new Test();
        test.setVisible(true);
    class Renderer extends DefaultTableCellRenderer {
        Color color;
        Renderer(Color color) { this.color = color; }
        public Component getTableCellRendererComponent(JTable table, Object value,
                boolean isSelected, boolean hasFocus, int row, int column) {
            super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
            setBackground(color);
            setToolTipText("Class is "+value.getClass().getName());
            return this;
}Message was edited by:
a3cchan

Set Cell Editor Image and Caption to Rows in ALV

Hi,
i want to set cell editor different elements to a column of alv. Please follow the link of screenshot.
[www.menstasarim.com/mmesut/state1.JPG]
Can somebody help me pls?
Thanks.

yes it is possible, basically you have to change the cell desing (for background colors) and insert the icons based on some condition.
lr_col = lr_config_model->if_salv_wd_column_settings~get_column( 'CARRID' ).
lr_col->SET_CELL_DESIGN( '02' ) .
this will change the background color, and you have to call another method to insert the icon.

Dynamically change the cell editor in the table control

Hi..
I have 3 columns in a table . of which in one column we need to change the cell editor dynamically at runtime.
i.e for example i have columns as carrid, connid and fldate.
For the first 2 rows the cell editor for the carrid clomn shud be a dropdown and from there on in the next rows for the same carrid column it shud be a input field.
Can experts plz help me how to achieve this as this is very high priority issue....
Regards,
Madhu...

This is actaully fairly simple to do. You will need to add a cellVariant to your table column. You can then dataBind a context attribute to the selectedCellVariant property of the column to control which cellVariant will be used. This allows you to control row-by-row which cell editor you want to output.
http://help.sap.com/saphelp_nw70/helpdata/EN/bd/5d9041d3c72e7be10000000a1550b0/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/EN/56/5e9041d3c72e7be10000000a1550b0/frameset.htm
Also here is an example that I did the other day that uses Cell Variants within ALV. This process is actually a little more complicated because you have to go through the ALV APIs. To do this in a normal table is actually easier because you can create the cellVariant in the layout designer.
Re: Freely-programmed value help for a single ALV cell

Abt Drop Down For ALV Data cells

Hi,
I m unable to create drop down for each cell of ALV table.
Reply me as soon as possible.
Thks.

You need to create an object of type CL_SALV_WD_UIE_DROPDOWN_BY_KEY, which is the UI element for dropdown by key, and set that to be your individual cell editor.
For whichever column you want a dropdown box, use the method set_cell_editor to make the editor as a dropdown box. Hope this helps.
Regards
Nithya

List UIBB - Access to cell editor for a certain table line possible

Hi,
I am looking for a way to access the cell editor of the last table line as I want to mark it as a special - summary - line.
I intend a similar approach like in WebDynrpo ABAP when accessing the node info and modifying the "CELL DESIGN" attribute like in the following code (copied from WD Comp WDR_TEST_TABLE, View CELL DESIGN, method FILL_CELL_DESIGNS) :
data tab type IF_CELL_DESIGN=>Elements_Cell_Designs.
data line type IF_CELL_DESIGN=>Element_Cell_Designs.
data node_info type ref to if_wd_context_node_info.
data attribute_info type wdr_context_attribute_info.
data attr_value type WDR_CONTEXT_ATTR_VALUE.
node_info = node->get_node_info( ).
attribute_info = node_info->get_attribute( 'CELL_DESIGN' ).
line-is_expanded = abap_true.
line-is_leaf     = abap_false.
line-key         = 'FIRST'.
loop at attribute_info-value_set into attr_value.
    line-text = sy-tabix.
    concatenate 'Text #' line-text into line-text. "#EC NOTEXT
    line-cell_design = attr_value-value.
    insert line into table tab.
    line-is_leaf = abap_true.
    line-key = attr_value-value.
    line-parent_key = 'FIRST'.
endloop.
node->bind_table( tab ).
I suspect the method IF_FPM_GUIBB_LISTGET_DATA (or IF_FPM_GUIBB_LISTGET_DEFINITION) of my feeder class to be the right access point.
But unfortunately, I have not yet found out how to change the cell design for specific lines, only for whole columns.
Can anyone give me a hint here?
BTW: The "summary" line is not a sum of the lines above, but determined by backend logic, so not ALV-summary line for me.
Kind Regards

Hi,
A short update for all interested:
My current work around is to always set the lead selection to the summary line. It does in a kind "mark" that line as special as long as I cannot mark it using a different cell design.
How do I assure this?
I have implemented the following code in a redefinition of the method ADJUST_SELECTION:
*- alter selection
DATA:
   ls_size TYPE rstabix.
"get index of summary line
ls_size-tabix = mo_collection->size( ).
"change only if there are any cash conc. proposals
IF ls_size-tabix > 0.
    "do FPM selection
    CLEAR: ev_lead_index, et_selection.
    ev_lead_index = ls_size-tabix.
    APPEND ls_size TO et_selection.
    "do BOL selection
    mo_collection->if_bol_bo_col_multi_sel~unmark_all( ).
    mo_collection->if_bol_bo_col_multi_sel~mark( iv_index = ls_size-tabix ).
ENDIF.
The general downside is, that no other selection is possible!
The selection is always reset to the summary line with each roundtrip.
Waiting for a better solution...
Kind Regards,
Robert

Buttons in ALV Grid cell need focus to be clicked :-(

Hi,
I have an ALV Grid with single cells displayed as buttons (dependend on the data in the corresponding row). Unfortunatelly the button-cells need focus to be clicked. So you need two clicks: one to get the focus to the desired cell and one to really click the button.
Any ideas how to make this work with one single click ? (Setting a hotspot does not work, cause hotspots have the same problem.)
Regards,
Tobi

Hello Tobias
The proposal by Naimesh is valid for CL_GUI_ALV_GRID, too. You may have a look at sample report ZUS_SDN_ALVGRID_EVENTS_HOTSPOT. Put the focus on any non-button cell and next click on any customer button.
*& Report ZUS_SDN_ALVGRID_EVENTS_HOTSPOT
*& Thread: Buttons in ALV Grid cell need focus to be clicked :-(
*& <a class="jive_macro jive_macro_thread" href="" __jive_macro_name="thread" modifiedtitle="true" __default_attr="1009251"></a>
REPORT zus_sdn_alvgrid_events_hotspot.
DATA:
gd_okcode        TYPE ui_func,
gt_fcat          TYPE lvc_t_fcat,
go_docking       TYPE REF TO cl_gui_docking_container,
go_grid1         TYPE REF TO cl_gui_alv_grid.
DATA:
go_table              TYPE REF TO cl_salv_table,
go_grid_adapter       TYPE REF TO cl_salv_grid_adapter.
DATA:
gt_knb1          TYPE STANDARD TABLE OF knb1.
PARAMETERS:
p_bukrs      TYPE bukrs DEFAULT '2000' OBLIGATORY.
*       CLASS lcl_eventhandler DEFINITION
CLASS lcl_eventhandler DEFINITION.
PUBLIC SECTION.
    CLASS-METHODS:
      handle_hotspot_click FOR EVENT hotspot_click OF cl_gui_alv_grid
        IMPORTING
          e_row_id
          e_column_id
          es_row_no
          sender, " grid instance that raised the event
      handle_button_click FOR EVENT button_click OF cl_gui_alv_grid
        IMPORTING
          es_col_id
          es_row_no
          sender.
ENDCLASS.                    "lcl_eventhandler DEFINITION
*       CLASS lcl_eventhandler IMPLEMENTATION
CLASS lcl_eventhandler IMPLEMENTATION.
METHOD handle_hotspot_click.
*   define local data
    DATA:
      ls_knb1     TYPE knb1,
      ls_col_id   TYPE lvc_s_col.
    READ TABLE gt_knb1 INTO ls_knb1 INDEX e_row_id-index.
    CHECK ( ls_knb1-kunnr IS NOT INITIAL ).
    CASE e_column_id-fieldname.
      WHEN 'KUNNR'.
        SET PARAMETER ID 'KUN' FIELD ls_knb1-kunnr.
        SET PARAMETER ID 'BUK' FIELD ls_knb1-bukrs.
        CALL TRANSACTION 'XD03' AND SKIP FIRST SCREEN.
      WHEN 'ERNAM'.
*        SET PARAMETER ID 'USR' FIELD ls_knb1-ernam.
*        NOTE: no parameter id available, yet simply show the priciple
        CALL TRANSACTION 'SU01' AND SKIP FIRST SCREEN.
      WHEN OTHERS.
*       do nothing
    ENDCASE.
*   Set active cell to field BUKRS otherwise the focus is still on
*   field KUNNR which will always raise event HOTSPOT_CLICK
    ls_col_id-fieldname = 'BUKRS'.
    CALL METHOD go_grid1->set_current_cell_via_id
      EXPORTING
        is_row_id    = e_row_id
        is_column_id = ls_col_id.
ENDMETHOD.                    "handle_hotspot_click
METHOD handle_button_click.
*   define local data
    DATA:
      ls_knb1     TYPE knb1.
    READ TABLE gt_knb1 INTO ls_knb1 INDEX es_row_no-row_id.
    CHECK ( ls_knb1-kunnr IS NOT INITIAL ).
    SET PARAMETER ID 'KUN' FIELD ls_knb1-kunnr.
    SET PARAMETER ID 'BUK' FIELD ls_knb1-bukrs.
    CALL TRANSACTION 'XD03' AND SKIP FIRST SCREEN.
ENDMETHOD.                    "handle_button_click
ENDCLASS.                    "lcl_eventhandler IMPLEMENTATION
START-OF-SELECTION.
SELECT        * FROM knb1 INTO TABLE gt_knb1
         WHERE bukrs = p_bukrs.
** TRY.
**      CALL METHOD cl_salv_table=>factory
***      EXPORTING
***      LIST_DISPLAY   = IF_SALV_C_BOOL_SAP=>FALSE
***      R_CONTAINER    =
***      CONTAINER_NAME =
**        IMPORTING
**          r_salv_table   = go_table
**        CHANGING
**          t_table        = gt_knb1.
**    CATCH cx_salv_msg .
** ENDTRY.
** go_table->display( ).
** go_table->get_metadata( ).
** EXIT.
* Create docking container
CREATE OBJECT go_docking
    EXPORTING
      parent = cl_gui_container=>screen0
      ratio = 90
    EXCEPTIONS
      OTHERS = 6.
IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Create ALV grid
CREATE OBJECT go_grid1
    EXPORTING
      i_parent = go_docking
    EXCEPTIONS
      OTHERS   = 5.
IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Set event handler
SET HANDLER:
    lcl_eventhandler=>handle_hotspot_click FOR go_grid1,
    lcl_eventhandler=>handle_button_click FOR go_grid1.
* Build fieldcatalog and set hotspot for field KUNNR
PERFORM build_fieldcatalog_knb1.
* Display data
CALL METHOD go_grid1->set_table_for_first_display
    CHANGING
      it_outtab       = gt_knb1
      it_fieldcatalog = gt_fcat
    EXCEPTIONS
      OTHERS          = 4.
IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Link the docking container to the target dynpro
CALL METHOD go_docking->link
    EXPORTING
      repid                       = syst-repid
      dynnr                       = '0100'
*      CONTAINER                   =
    EXCEPTIONS
      OTHERS                      = 4.
IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* ok-code field = GD_OKCODE
CALL SCREEN '0100'.
END-OF-SELECTION.
*&      Module STATUS_0100 OUTPUT
*       text
MODULE status_0100 OUTPUT.
SET PF-STATUS 'STATUS_0100'.
* SET TITLEBAR 'xxx'.
ENDMODULE.                 " STATUS_0100 OUTPUT
*&      Module USER_COMMAND_0100 INPUT
*       text
MODULE user_command_0100 INPUT.
CASE gd_okcode.
    WHEN 'BACK' OR
         'END' OR
         'CANC'.
      SET SCREEN 0. LEAVE SCREEN.
    WHEN OTHERS.
ENDCASE.
CLEAR: gd_okcode.
ENDMODULE.                 " USER_COMMAND_0100 INPUT
*&      Form BUILD_FIELDCATALOG_KNB1
*       text
* --> p1        text
* <-- p2        text
FORM build_fieldcatalog_knb1 .
* define local data
DATA:
    ls_fcat        TYPE lvc_s_fcat.
CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
*     I_BUFFER_ACTIVE              =
      i_structure_name             = 'KNB1'
*     I_CLIENT_NEVER_DISPLAY       = 'X'
*     I_BYPASSING_BUFFER           =
*     I_INTERNAL_TABNAME           =
    CHANGING
      ct_fieldcat                  = gt_fcat
    EXCEPTIONS
      inconsistent_interface       = 1
      program_error                = 2
      OTHERS                       = 3.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
LOOP AT gt_fcat INTO ls_fcat
          WHERE ( fieldname = 'KUNNR' OR
                  fieldname = 'ERNAM' OR
                  fieldname = 'BUKRS' ).
    IF ( ls_fcat-fieldname = 'BUKRS' ).
      ls_fcat-style = cl_gui_alv_grid=>mc_style_button.
      " column appears as button
    ELSEIF ( ls_fcat-fieldname = 'KUNNR' ).
      ls_fcat-style = cl_gui_alv_grid=>mc_style_button.
      ls_fcat-hotspot = abap_true.
    ELSE.
      ls_fcat-hotspot = abap_true.
    ENDIF.
    MODIFY gt_fcat FROM ls_fcat.
ENDLOOP.
ENDFORM.                    " BUILD_FIELDCATALOG_KNB1
Regards
Uwe

Problem in JTable with a JComboBox cell editor

Hi gurus,
Please help! I am having a problem with a JTable that has a JComboBox cell editor. When the table is first loaded, the combo box column displays correct data. But whenever I click the combo box, the selection will be set to the first item in the combo box list once the popup menu pops up even before I make any new selection. It is very annoying.
Here is how I set the cell editor:
populateComboBoxModel(); // populate the combo box model.
DefaultCellEditor cell_editor = new DefaultCellEditor(new JComboBox(
combo_model));
contrib_table.getColumnModel().getColumn(1).setCellEditor(
cell_editor);
I didn't set the cell renderer so I assume it is using the default cell renderer.
Thanks !

Not quite. The example doesn't have a different cell editor for each row of the table. I'm sure I must be missing something, bc I've found many references to the fact that this is possible to do. And I have most of it working. However, when I click on any given combobox, it automatically switches to the first value in the list, not the selected item. I've tried setting the selected item all over the code, but it has no effect on this behavior. Also, it only happens the first time I select a given cell. For example, suppose the first row has items A, B, and C, with B being the selected value. The table initially displays with B in this cell, but when I click on B, it switches to A when it brings up the list. If I select B, and move on to some other cell, and then go back and click on B again, it doesn't switch to A.
There seems to be a disconnect between the values that I display initially, and the values that I set as selected in the comboboxes. Either that, or it behaves as though I never set the selected item for the combobox at all.
Any help would be greatly appreciated.

How to use cell editors in JTree?

Hi,
I have a component where I am placing JTable in JTree node.The table cells should be editable.
I was unable to do that.
I am giving code for 2 classes below,which I used.
To test this compile the classes seperately.
/**************************TableInTree.java(main class)**************/
import java.awt.Component;
import javax.swing.*;
import javax.swing.tree.*;
import java.util.*;
public class TableInTree extends JFrame
public TableInTree()
super("TableInTree");
JTree tree = new JTree(this.createTreeModel());
tree.setCellRenderer(new ResultTreeCellRenderer());
tree.setEditable(true);
this.getContentPane().add(new JScrollPane(tree));
public static void main(String[] args)
TableInTree frame = new TableInTree();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(800, 600);
frame.show();
// * Method createRootNodes.
private TreeModel createTreeModel()
DefaultMutableTreeNode root = new DefaultMutableTreeNode("root");
DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("test1");
node1.add(new DefaultMutableTreeNode(new TableRenderDemo)));
root.add(node1);
root.add(new DefaultMutableTreeNode("test2"));
return new DefaultTreeModel(root, true);
public static class ResultTreeCellRenderer extends DefaultTreeCellRenderer
public Component getTreeCellRendererComponent(JTree t, Object value,boolean s, boolean o,boolean l, int r, boolean h)
if (value instanceof DefaultMutableTreeNode)
DefaultMutableTreeNode node = (DefaultMutableTreeNode) value;
if (node.getUserObject() instanceof TableRenderDemo)
return new JScrollPane((TableRenderDemo) node.getUserObject());
return super.getTreeCellRendererComponent(t, value, s, o, l, r, h);
/*******************TreeRenderDemo.java**************************/
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.table.*;
import java.awt.*;
* TableRenderDemo is just like TableDemo, except that it
* explicitly initializes column sizes and it uses a combo box
* as an editor for the Sport column.
public class TableRenderDemo extends JPanel {
private boolean DEBUG = false;
public TableRenderDemo() {
super(new GridLayout(1,0));
JTable table = new JTable(new MyTableModel());
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Set up column sizes.
initColumnSizes(table);
//Fiddle with the Sport column's cell editors/renderers.
setUpSportColumn(table, table.getColumnModel().getColumn(2));
//Add the scroll pane to this panel.
add(scrollPane);
* This method picks good column sizes.
* If all column heads are wider than the column's cells'
* contents, then you can just use column.sizeWidthToFit().
private void initColumnSizes(JTable table) {
MyTableModel model = (MyTableModel)table.getModel();
TableColumn column = null;
Component comp = null;
int headerWidth = 0;
int cellWidth = 0;
Object[] longValues = model.longValues;
TableCellRenderer headerRenderer =
((JTableHeader)table.getTableHeader()).getDefaultRenderer();
for (int i = 0; i < 5; i++) {
column = table.getColumnModel().getColumn(i);
comp = headerRenderer.getTableCellRendererComponent(
null, column.getHeaderValue(),
false, false, 0, 0);
headerWidth = comp.getPreferredSize().width;
comp = table.getDefaultRenderer(model.getColumnClass(i)).
getTableCellRendererComponent(
table, longValues,
false, false, 0, i);
cellWidth = comp.getPreferredSize().width;
if (DEBUG) {
System.out.println("Initializing width of column "
+ i + ". "
+ "headerWidth = " + headerWidth
+ "; cellWidth = " + cellWidth);
//XXX: Before Swing 1.1 Beta 2, use setMinWidth instead.
column.setPreferredWidth(Math.max(headerWidth, cellWidth));
public void setUpSportColumn(JTable table,
TableColumn sportColumn) {
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("Snowboarding");
comboBox.addItem("Rowing");
comboBox.addItem("Knitting");
comboBox.addItem("Speed reading");
comboBox.addItem("Pool");
comboBox.addItem("None of the above");
sportColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
sportColumn.setCellRenderer(renderer);
class MyTableModel extends AbstractTableModel {
private String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
private Object[][] data = {
{"Mary", "Campione",
"Snowboarding", new Integer(5), new Boolean(false)},
{"Alison", "Huml",
"Rowing", new Integer(3), new Boolean(true)},
{"Kathy", "Walrath",
"Knitting", new Integer(2), new Boolean(false)},
{"Sharon", "Zakhour",
"Speed reading", new Integer(20), new Boolean(true)},
{"Philip", "Milne",
"Pool", new Integer(10), new Boolean(false)}
public final Object[] longValues = {"Sharon", "Campione",
"None of the above",
new Integer(20), Boolean.TRUE};
public int getColumnCount() {
return columnNames.length;
public int getRowCount() {
return data.length;
public String getColumnName(int col) {
return columnNames[col];
public Object getValueAt(int row, int col) {
return data[row][col];
* JTable uses this method to determine the default renderer/
* editor for each cell. If we didn't implement this method,
* then the last column would contain text ("true"/"false"),
* rather than a check box.
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
* Don't need to implement this method unless your table's
* editable.
public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
if (col < 2) {
return false;
} else {
return true;
* Don't need to implement this method unless your table's
* data can change.
public void setValueAt(Object value, int row, int col) {
if (DEBUG) {
System.out.println("Setting value at " + row + "," + col
+ " to " + value
+ " (an instance of "
+ value.getClass() + ")");
data[row][col] = value;
fireTableCellUpdated(row, col);
if (DEBUG) {
System.out.println("New value of data:");
printDebugData();
private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + data[j]);
System.out.println();
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
private static void createAndShowGUI() {
//Make sure we have nice window decorations.
//JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
JFrame frame = new JFrame("TableRenderDemo");
//frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
TableRenderDemo newContentPane = new TableRenderDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
Please give me a solution.
thanks in advance

rebounce

Changing the event that starts JTree cell editor

I've implemented a JTree that uses a custom cell renderer and editor. Everything is going well except for a look and feel issue. When I double click on a JTree entry or single click on a node that has already been selected, the cell editor starts immediately. This is way to generous, and I'm finding I'm often editing cells when I just want to navigate the tree.
I'd much prefer to have the edit event be something harder to do like a right click or a triple left click. Is there a way to change the event that starts the JTree cell editor?

DefaultCellEditor provides a method boolean isCellEditable(EventObject anEvent), by default it always returns true. Override that method in your cell editor to only return true if the event is a right click, or whatever you want.

WD ALV default cell editor

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