Alv cell editing
Hi ,
can anybody tell me how to make a cell editable in alvgrid .
In the field catalogue, change the attributes of that field as editable
fcat-edit = 'X'.
After creating the grid, register event entered and modified
Create alv grid
CREATE OBJECT w_grid_vend
EXPORTING
i_parent = w_vend_contnr
EXCEPTIONS
error_cntl_create = 1
error_cntl_init = 2
error_cntl_link = 3
error_dp_create = 4
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.
Register edit event
CALL METHOD w_grid_vend->register_edit_event
EXPORTING
i_event_id = cl_gui_alv_grid=>mc_evt_enter
EXCEPTIONS
error = 1
OTHERS = 2.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
Edit event for modified
CALL METHOD w_grid_vend->register_edit_event
EXPORTING
i_event_id = cl_gui_alv_grid=>mc_evt_modified
EXCEPTIONS
error = 1
OTHERS = 2.
Handle the changed data in the methods
Handle data changed
METHODS handle_data_changed FOR EVENT data_changed
OF cl_gui_alv_grid
IMPORTING er_data_changed.
Similar Messages
-
Hi ,
I am using cl_gui_alv_grid .
please let me know how to make a particular cell is editable
eg: cell corresponding to first row second column should be editabel but remaining all are non editableHi,
Loop at your internal table.
Eg: i have total 5 fields in my internal table itab_zqmeinz. in that 3 fields are editable as below.
declare DATA: lt_celltab TYPE lvc_t_styl.
internal table with celltab as one of the column
DATA: BEGIN OF itab_zqmeinz OCCURS 0. "TYPE STANDARD TABLE OF zqmseqkopf
INCLUDE STRUCTURE zqmseqeinz.
DATA: celltab TYPE lvc_t_styl.
DATA: END OF itab_zqmeinz.
LOOP AT itab_zqmeinz INTO wa_zqmeinz.
l_index = sy-tabix.
REFRESH lt_celltab.
CLEAR wa_zqmeinz-celltab.
PERFORM fill_celltab1 USING 'RW'
CHANGING lt_celltab.
INSERT LINES OF lt_celltab INTO TABLE wa_zqmeinz-celltab.
MODIFY itab_zqmeinz FROM wa_zqmeinz INDEX l_index.
ENDLOOP.
FORM fill_celltab1 USING value(p_mode)
CHANGING pt_celltab TYPE lvc_t_styl.
Refresh pt_celltab.
clear ls_celltab.
IF p_mode EQ 'RW'.
l_mode = cl_gui_alv_grid=>mc_style_enabled. "to enable the required fields
ELSE. "p_mode eq 'RO'
l_mode = cl_gui_alv_grid=>mc_style_disabled.
ENDIF.
ls_celltab-fieldname = 'NEBENSEQUEN'. " field1
ls_celltab-style = l_mode.
INSERT ls_celltab INTO TABLE pt_celltab.
ls_celltab-fieldname = 'BEZEICHNUNG'. "field2
ls_celltab-style = l_mode.
INSERT ls_celltab INTO TABLE pt_celltab.
ls_celltab-fieldname = 'SORTIERUNG'. "field3
ls_celltab-style = l_mode.
INSERT ls_celltab INTO TABLE pt_celltab.
Endform.
It works. I have done it in my program.
Thanks, -
How to make cell editable alv in WebDynpro for ABAP?
I make Column editable ALV.(See under source code)
But I can't make Cell editable ALV.
How to make Cell editable ALV in WebDynpro for ABAP?
and..how to get changed data?
DATA: l_value TYPE REF TO cl_salv_wd_config_table.
l_value = l_ref_interfacecontroller->get_model( ).
* { EDITABLE
DATA: lr_column_settings TYPE REF TO if_salv_wd_column_settings,
lr_input_field TYPE REF TO cl_salv_wd_uie_input_field,
lr_column TYPE REF TO cl_salv_wd_column.
lr_column_settings ?= l_value.
lr_column = lr_column_settings->get_column( 'TOTAL_COUNT' ).
CREATE OBJECT lr_input_field
EXPORTING
value_fieldname = 'TOTAL_COUNT'.
lr_column->set_cell_editor( lr_input_field ).
DATA: lr_table_settings TYPE REF TO if_salv_wd_table_settings.
lr_table_settings ?= l_value.
lr_table_settings->set_read_only( abap_false ).the code seems to be correct....but where are you writing it?
put the code in the wddoinit method and it should work.
have a look at this article..
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/3133474a-0801-0010-d692-81827814a5a1 -
ALV cell attributes CHANGE during DATA_CHANGED event
Hi,
I am working with CL_GUI_ALV_GRID in a splitter control. I am trying to make separate cells (non)editable depending on user input in the ALV. In event DATA_CHANGED (refefined) I change the cellstyle-table and then use method REFRESH_TABLE_DISPLAY.
My problem is: I can change contents of fields perfectly, but when I change a cell's editability, the cell is being showns as editable, but when I press F4 f.i. and look in debug, the cellstyles-table hasn't been updated and still reflects the old values.
Could anybody help me out?
Kind regards,
Roy
P.S. Obviously I will reward points to useful answers.Hi Nithya,
I am not making the field edit or no-edit using fieldcatalog-edit. This makes an emtire column editable. I only want to make individual cells editable.
I do this using a table that I have attached to the ALV's structure and linked using layout-stylefname. You gave me an idea though: I might have to use SET_SELECTED_CELLS or an equivalent.
Any other ideas that might be helpful?
Kind regards,
Roy -
ALV Row Editable for specific column
Hi,
I am creating a transaction using ALV - Webdynpro. I would like to enable or disable the row ,(specific column in that row ).
Problem is very similar to the thread posted in the below link.
enable or disable row in alv
Please let me know how to achive the scenario.
Thanks,
KumarHi Kumar,
Have a look at [this thread|How to set some rows in ALV to be editable or some non editable.; in which I have given the complete code to solve your problem. There is one post which explains how to set the cell editor, and one more post explains setting the cell as editable or read only.
You need to bind the read_only property of your node attribute (i.e, whichever column you want this behavior on), to another attribute (say FLD_READ_ONLY) in the same context node. And based on the value in attribute FLD_READ_ONLY, the cell property would be changed. Define this attribute of type char01. So based on your business logic, if you want the cell to be read only, set X in the attribute, and if you want it to be editable, set space.
I hope that would be clear enough. Please revert for any clarifications. Depending on your requirement, if you want the read_only property to change on lead selection, you can get the lead selection index and set the attribute FLD_READ_ONLY = X / space only for that element. This would make only one cell editable at a time.
You could also refer to this recent [thread|ABAP WebDynpro: Can edit a cell in a column?; for the same issue, where you would have some additional pointers.
Regards,
Nithya -
Set ALV Cell visibility property
Hi,
I would have 2 tables for ALV. One table consists of the data to be bound to the ALV. The other table would have the read only property(boolean) filled for each of the ALV cells.
I would want to set the property of each ALV cell using the second table. How do i do that?
Currently i am just testing it for few attributes statically using the below code.
DATA lo_nd_date_table TYPE REF TO if_wd_context_node.
DATA lo_el_date_table TYPE REF TO if_wd_context_element.
DATA: lt_ele_set TYPE wdr_context_element_set.
navigate from <CONTEXT> to <DATE_TABLE> via lead selection
lo_nd_date_table = wd_context->get_child_node( name = wd_this->wdctx_date_table ).
lt_ele_set = lo_nd_date_table->get_elements( ).
LOOP AT lt_ele_set INTO lo_el_date_table.
lo_el_date_table->set_attribute_property(
attribute_name = 'WK02' -
> Attribute Name (Column Name)
property = if_wd_context_element=>e_property-read_only
value = 'X' ).
<< Similarly for other attributes>>
ENDLOOP.
I have inserted this code at the end. Initially few other properties were set to the cells.
This seems to be not working.
Regards,
Rekha
Edited by: Rekha Gopinath on Sep 8, 2009 10:40 AMHi Lekha,
In my case, the columns represents dates. The rows represent projects. So, only those row cells are editable where the project is valid.
1. I have created READ_ONLY attribute for the date node (table).
2. I am filling the READ_ONLY to abap_true or abap_false based on the following condition.
Even if one of the projects is not valid for a date, then READ_ONLY = ABAP_TRUE. This means, even if one cell is set to abap_true, then READ_ONLY is set to abap_true.
3. I modify the date node and bind it with the READ_ONLY set row wise.
Loop at the data and set read only
navigate from <CONTEXT> to <DATE_TABLE> via lead selection
lo_nd_date_table = wd_context->get_child_node( name = wd_this->wdctx_date_table ).
CALL METHOD lo_nd_date_table->get_static_attributes_table
IMPORTING
table = lt_date_table .
LOOP AT lt_date_table INTO ls_date_table.
lv_tabix = sy-tabix.
READ TABLE wd_this->gt_prop INTO ls_prop INDEX lv_tabix.
IF sy-subrc EQ 0.
IF ls_prop-wk01 = abap_true OR
ls_prop-wk02 = abap_true OR
ls_prop-wk03 = abap_true OR
ls_prop-wk04 = abap_true OR
ls_prop-wk05 = abap_true OR
ls_prop-wk06 = abap_true OR
ls_prop-wk07 = abap_true OR
ls_prop-wk08 = abap_true OR
ls_prop-wk09 = abap_true OR
ls_prop-wk10 = abap_true OR
ls_prop-wk11 = abap_true OR
ls_prop-wk12 = abap_true OR
ls_prop-wk13 = abap_true OR
ls_prop-wk14 = abap_true OR
ls_prop-wk15 = abap_true.
ls_date_table-read_only = abap_true.
ELSE.
ls_date_table-read_only = abap_false.
ENDIF.
ENDIF.
MODIFY lt_date_table FROM ls_date_table INDEX lv_tabix TRANSPORTING read_only.
ENDLOOP.
CALL METHOD lo_nd_date_table->bind_table
EXPORTING
new_items = lt_date_table
set_initial_elements = abap_true.
4. I loop through the column reference and use the code mentioned earlier.
CREATE OBJECT lr_input
EXPORTING
value_fieldname = lv_id.
lo_column->set_cell_editor( value = lr_input ).
lr_input->set_read_only_fieldname( value = 'READ_ONLY' ).
The expected output is different from the input i had mentioned earlier for Row 1, row 2, Row 3 and row 4. Here, i would get all the rows as non editable except for Row 3.
I would want to set all columns based on condition.
Regards,
Rekha -
How can i make perticular row or perticular cell Editable of a JTable
Dear al,
can u help me by guiding me for the problem of...
i am having a JTable, in which a (first)column of each row is having a checkbox field.
If the checkbox is checked then and then i should able to modify the cells in that row where the checkbox is.
I have created the table with AbstractTableModel of which the isCellEditable(int row, int col) method is overwriten. Whatever return value (true/false) reflects the perticular
cells becomes editable/non-editable respectively.
but at run time...(mean the table is created now) and now i want to make the cells editable/non-editable depending on the checkbox value...
how can i implement it.........
please suggest.........
thank you.........here is the sample code from tutorial.......
* TableRenderDemo.java requires no other files.
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
* 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.
@SuppressWarnings("serial")
public class TableRenderDemo extends JPanel {
private boolean DEBUG = true;
public TableRenderDemo() {
super(new GridLayout(1, 0));
JTable table = new JTable(new MyTableModel());
// table.setEditingColumn(0);
// table.editCellAt(0, 0);
table.setPreferredScrollableViewportSize(new Dimension(500, 100));
// 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 = 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.
// return false;
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[i][j]);
System.out.println();
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() {
// 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);
public static void main(String[] args) {
// Schedule a job for the event-dispatching thread:
// creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI(); -
Hi,
Please help me,
I need to make a ALV report, which is having one field editable.
I want a code , when i will give input in editable field in ALV report , it should be save in my internal table.
Please give me a sample program ,
like take a internal table with two field. whose one field will editable.when user will give input in editable field it should save in internal table in same row like ALV list.
Thanks,
AbhishekThe follow program demonstrates how to make individual fields of an ALV grid editable (NetPR greater than 10).
Changes required from a basic ALV grid include adding a new field to ALV grid data table(it_ekko), Populating this
field with style attribute and adding an entry to layout control table.
*& Report ZDEMO_ALVGRID_EDIT *
*& Example of a simple ALV Grid Report *
*& The basic ALV grid, Enhanced to display specific fields as *
*& editable depending on field value *
REPORT ZDEMO_ALVGRID_EDIT .
TABLES: ekko.
TYPE-POOLS: slis. "ALV Declarations
*Data Declaration
TYPES: BEGIN OF t_ekko,
ebeln TYPE ekpo-ebeln,
ebelp TYPE ekpo-ebelp,
statu TYPE ekpo-statu,
aedat TYPE ekpo-aedat,
matnr TYPE ekpo-matnr,
menge TYPE ekpo-menge,
meins TYPE ekpo-meins,
netpr TYPE ekpo-netpr,
peinh TYPE ekpo-peinh,
field_style TYPE lvc_t_styl, "FOR DISABLE
END OF t_ekko.
DATA: it_ekko TYPE STANDARD TABLE OF t_ekko INITIAL SIZE 0,
wa_ekko TYPE t_ekko.
*ALV data declarations
DATA: fieldcatalog TYPE slis_t_fieldcat_alv WITH HEADER LINE.
DATA: it_fieldcat TYPE lvc_t_fcat, "slis_t_fieldcat_alv WITH HEADER LINE,
wa_fieldcat TYPE lvc_s_fcat,
gd_tab_group TYPE slis_t_sp_group_alv,
gd_layout TYPE lvc_s_layo, "slis_layout_alv,
gd_repid LIKE sy-repid.
*Start-of-selection.
START-OF-SELECTION.
PERFORM data_retrieval.
PERFORM set_specific_field_attributes.
PERFORM build_fieldcatalog.
PERFORM build_layout.
PERFORM display_alv_report.
*& Form BUILD_FIELDCATALOG
Build Fieldcatalog for ALV Report
FORM build_fieldcatalog.
wa_fieldcat-fieldname = 'EBELN'.
wa_fieldcat-scrtext_m = 'Purchase Order'.
wa_fieldcat-col_pos = 0.
wa_fieldcat-outputlen = 10.
wa_fieldcat-emphasize = 'X'.
wa_fieldcat-key = 'X'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'EBELP'.
wa_fieldcat-scrtext_m = 'PO Item'.
wa_fieldcat-col_pos = 1.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'STATU'.
wa_fieldcat-scrtext_m = 'Status'.
wa_fieldcat-col_pos = 2.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'AEDAT'.
wa_fieldcat-scrtext_m = 'Item change date'.
wa_fieldcat-col_pos = 3.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'MATNR'.
wa_fieldcat-scrtext_m = 'Material Number'.
wa_fieldcat-col_pos = 4.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'MENGE'.
wa_fieldcat-scrtext_m = 'PO quantity'.
wa_fieldcat-col_pos = 5.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'MEINS'.
wa_fieldcat-scrtext_m = 'Order Unit'.
wa_fieldcat-col_pos = 6.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'NETPR'.
wa_fieldcat-scrtext_m = 'Net Price'.
wa_fieldcat-edit = 'X'. "sets whole column to be editable
wa_fieldcat-col_pos = 7.
wa_fieldcat-outputlen = 15.
wa_fieldcat-datatype = 'CURR'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'PEINH'.
wa_fieldcat-scrtext_m = 'Price Unit'.
wa_fieldcat-col_pos = 8.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
ENDFORM. " BUILD_FIELDCATALOG
*& Form BUILD_LAYOUT
Build layout for ALV grid report
FORM build_layout.
Set layout field for field attributes(i.e. input/output)
gd_layout-stylefname = 'FIELD_STYLE'.
gd_layout-zebra = 'X'.
ENDFORM. " BUILD_LAYOUT
*& Form DISPLAY_ALV_REPORT
Display report using ALV grid
FORM display_alv_report.
gd_repid = sy-repid.
call function 'REUSE_ALV_GRID_DISPLAY'
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
EXPORTING
i_callback_program = gd_repid
i_callback_user_command = 'USER_COMMAND'
is_layout_lvc = gd_layout
it_fieldcat_lvc = it_fieldcat
i_save = 'X'
TABLES
t_outtab = it_ekko
EXCEPTIONS
program_error = 1
OTHERS = 2.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " DISPLAY_ALV_REPORT
*& Form DATA_RETRIEVAL
Retrieve data form EKPO table and populate itab it_ekko
FORM data_retrieval.
SELECT ebeln ebelp statu aedat matnr menge meins netpr peinh
UP TO 10 ROWS
FROM ekpo
INTO CORRESPONDING FIELDS OF TABLE it_ekko.
ENDFORM. " DATA_RETRIEVAL
*& Form set_specific_field_attributes
populate FIELD_STYLE table with specific field attributes
form set_specific_field_attributes .
DATA ls_stylerow TYPE lvc_s_styl .
DATA lt_styletab TYPE lvc_t_styl .
Populate style variable (FIELD_STYLE) with style properties
The NETPR field/column has been set to editable in the fieldcatalog...
The following code sets it to be disabled(display only) if 'NETPR'
is gt than 10.
LOOP AT it_ekko INTO wa_ekko.
IF wa_ekko-netpr GT 10.
ls_stylerow-fieldname = 'NETPR' .
ls_stylerow-style = cl_gui_alv_grid=>mc_style_disabled.
"set field to disabled
APPEND ls_stylerow TO wa_ekko-field_style.
MODIFY it_ekko FROM wa_ekko.
ENDIF.
ENDLOOP.
endform. " set_specific_field_attributes
hope this helps
reward if useful
Edited by: Richa Khosla on Mar 25, 2008 1:30 PM -
Need help serializing an AbstractTableModel for a JTable with cell editing.
Fun times are ahead. Here we go!
I have a JTable that contains data I'd like to serialize out to a file to be restored and viewed later.
So I tried saving the AbstractTableModel subclass out to a file. Whenever I do this, I get the following error message:
java.io.NotSerializableException: javax.swing.JTable$CellEditorRemover
Now I know for fact that serializing an AbstractTableModel that was installed in a JTable without cell editing works just fine (my old code did exactly that). As a result, I think that the code that handles events in the AbstractTableModel contains references back out to the JTable, which causes the JTable to be saved no matter what (even though I'm just interested in saving the TableModel only). It causes a bigger file than normal, but file size is not an issue. The only issue I have is that CellEditorRemover (an undocumented inner class of JTable), which is automatically installed for JTables with editable cells, is not serializable.
This leads to the following questions:
1. Is there a way to avoid serialization/deserialization of the CellEditorRemover inner class of JTable?
2. Is there a way to save an AbstractTableModel without saving all of the event listeners associated with it?
I think an answer to either of these questions would go a long way towards solving my problem. Otherwise, I'll resign myself to weeping silently in the corner of my office.
Thanks!I would suggest that if you can you only save the
data... but i would do this by using the
externalizable interface.
What you will need to do is have the
writeExternal(ObjectOutputStream out) and
readExternal(ObjectOutputStream out) methods in your
class. These will be responsiable for saving the
data.
Here's an example of what you can do in these
methods... this is just a little tidbit from a program
i've written.public void writeExternal(ObjectOutput out) throws
IOException {
out.writeInt(size);
out.writeObject(drawName);
out.writeInt(playersLength);
for(int i = 0; i < playersLength; i++)
) out.writeObject(players);
out.writeInt(seedsLength);
for(int i = 0; i < seedsLength; i++)
) out.writeObject(seeds[i]);
out.writeInt(drawLength);
for(int i = 0; i < drawLength; i++)
) out.writeObject(draw[i]);
public void readExternal(ObjectInput in) throws
IOException, ClassNotFoundException {
size = in.readInt();
drawName = (String)in.readObject();
playersLength = in.readInt();
for(int i = 0; i < playersLength; i++) players[i] =
= (String)in.readObject();
seedsLength = in.readInt();
for(int i = 0; i < seedsLength; i++) seeds[i] =
= (String)in.readObject();
drawLength = in.readInt();
for(int i = 0; i < drawLength; i++) draw[i] =
= (String)in.readObject();
You can now use your class as you would a Serializable
class, but it will only save the data
Hope this helped
webaf409java
I forgot to add some critical information in my original post. My apologies. :(
I've thought about using Externalizable, but am hesitant to use it because the application would no longer be able to read in files using the old save format (ie, AbstractTableModels for JTables without CellEditorRemovers ). I want to preserve the ability to read the old saved AbstractTableModel formats if possible.
Do you know of a way to revert to the default deserialization mechanism from readExternal? This way, during deserialization, I could do a quick test on the object being read and have the ability to default to the regular deserialization mechanism if the object is of the old type or continue with the new Externalizable stuff if the object is one of the new type. Maintaining file compatibility is key. -
Toggle between allowing cell editing and disallowing....
Hi,
I have an edit button and when clicked it allows the user to edit all cells on the table, when clicked again all cell editing is disabled. I have a method which is called by the edit button event handler which works fine.. what to put in the method is the problem!
I was using:
private void setTableEnabled(boolean enable){
if(enable)
table.setCellSelectionEnabled(true);
table.setEnabled(true);
table.setBackground(enabledTableColour);
else
table.setCellSelectionEnabled(false);
table.setEnabled(false);
if(table.isEditing())
{ table.getCellEditor().stopCellEditing();
table.setBackground(disabledTableColour);
}This code worked except when i use the table.setEnabled(false) my dropdowns don't work. The editing needs to be disabled when the application is loaded. i dont know why it effects my dropdown menus...
Any ideas why or how i could go about it another way?
Would really appreciate any help or insight!
Thanks,
Saz
***I was using:
private void setTableEnabled(boolean enable){
if(enable)
table.setCellSelectionEnabled(true);
table.setEnabled(true);
table.setBackground(enabledTableColour);
else
table.setCellSelectionEnabled(false);
table.setEnabled(false);
if(table.isEditing())
{ table.getCellEditor().stopCellEditing();
table.setBackground(disabledTableColour);
You should make use of the fact that a boolean can only have 1 of two values... You don't need to check it with an if, so your code can be rewritten as:
private void setTableEnabled(boolean enable){
table.setCellSelectionEnabled(enable);
table.setEnabled(enable);
if (enable) {
table.setBackground(enabledTableColour);
} else {
table.getCellEditor().stopCellEditing();
table.setBackground(disabledTableColour);
This code worked except when i use the
table.setEnabled(false) my dropdowns
don't work. The editing needs to be disabled when the
application is loaded. i dont know why it effects my
dropdown menus...What dropdowns? -
Making the ALV Non Editable on the Fly
Dear All ,
I have a one requirement inwhich i want to make the ALV grid Editable or non editable depending on a value of a perticular field in the Internal table.
Eg. I have one internal table as IT_DATA with fields Customer number , Order NUmber Comments and Status.
There are 10 records in this internal table out of which 5 has a status as 1 and 5 has a status as 0.
Now i want to make the field Comments non editable if the value in the status is 1. If it is 0, i want to keep it as Editable.
Please Suggest ,
Regards,
Nikhil JoshiHi
Try like this
DATA : it_fieldcat TYPE TABLE OF slis_fieldcat_alv,
wa_fieldcat TYPE slis_fieldcat_alv.
if status = 0.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'FLD1'.
wa_fieldcat-coltext = 'Field1.
wa_fieldcat-edit = 'X'.
APPEND wa_fieldcat TO it_fieldcat.
elseif status = 1.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'FLD2'.
wa_fieldcat-coltext = 'Field2.
APPEND wa_fieldcat TO it_fieldcat.
then call function module 'REUSE_ALV_GRID_DISPLAY;.
Thanks & Regards,
Anagha Deshmukh -
Multiple Input Rows In ALV Grid (Editable)
Hi,
I have an editable ALV grid and need to have multiple blank rows ready for input. Something similar to what happens when you click the "New Entries" button in SM30 (Table Maintainance).
There is a local function for appending lines in the ALV grid toolbar but this only allows a single entry.
I have replaced the local function with my own button (same icon etc) and on user_command event, I am appending several blank lines to my output table.
However these lines are not being shown on the screen. I have looked through the layout and field catalog but there is no field to allow blank lines to be shown.
My 2 questions are:
1. Is there some standard way of entering multiple entries in ALV Grid Editable.
2. If not then how to allow blank lines to be shown as ready for input.
Also if someone could suggest a way to do error checking for all entries on the screen especially duplicate entries I will be extremely grateful.
Many Thanks,
PreetHi, Preet!
You can easily do whatever checks you wish. You should declare an event handling method for event DATA_CHANGED and call the ADD_PROTOCOL_ENTRY method of the ER_DATA_CHANGED event parameter (it's an object of the class CL_ALV_CHANGED_DATA_PROTOCOL). You must not forget to set handler for your ALV grid.
For example, this piece of code checks for all changed fields resulting in error message if they are initial. In short, this makes all the fields obligatory.
METHODS: on_data_changed FOR EVENT data_changed OF cl_gui_alv_grid IMPORTING er_data_changed.
SET HANDLER your_object->on_data_changed FOR your_alv_grid.
METHOD on_data_changed.
DATA: s_mod_cell TYPE lvc_s_modi.
LOOP AT er_data_changed->mt_mod_cells INTO s_mod_cell.
IF s_mod_cell-value IS INITIAL.
* issue message 'Make an entry in all required fields'
CALL METHOD er_data_changed->add_protocol_entry
EXPORTING i_msgid = '00'
i_msgno = '055'
i_msgty = 'E'
i_fieldname = s_mod_cell-fieldname
i_row_id = s_mod_cell-row_id.
ENDIF.
ENDMETHOD.
Furthermore, if you make your class inherited from CL_GUI_ALV_GRID you can make use of protected attribute MT_OUTTAB which is a data object referencing your output table. Then you can have:
FIELD-SYMBOLS: <outtab> TYPE STANDARD TABLE.
ASSIGN me->mt_outtab->* TO <outtab>.
* do whatever you want with <outtab>
Hope this helps.
Kind regards,
Igor
P.S. Regarding the blank lines that you need, what's wrong with standard ALV grid buttons "Append row" and "Insert row" which appear whenever the grid is editable (unless you deliberately remove them)? They work just fine with me (just like on SM30). I don't see reason for programatically appending lines to your internal table. -
Stopping cell editing in a JTable using a JComboBox editor w/ AutoComplete
Hi there! Me again with more questions!
I'm trying to figure out the finer parts of JTable navigation and editing controls. It's getting a bit confusing. The main problem I'm trying to solve is how to make a JTable using a combo box editor stop editing by hitting the 'enter' key in the same fashion as a JTextField editor. This is no regular DefaultCellEditor though -- it's one that uses the SwingX AutoCompleteDecorator. I have an SSCCE that demonstrates the issue:
import java.awt.Component;
import java.awt.EventQueue;
import javax.swing.AbstractCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JTable;
import javax.swing.WindowConstants;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableModel;
import org.jdesktop.swingx.autocomplete.AutoCompleteDecorator;
public class AutoCompleteCellEditorTest extends JFrame {
public AutoCompleteCellEditorTest() {
JTable table = new JTable();
Object[] items = {"A", "B", "C", "D"};
TableModel tableModel = new DefaultTableModel(2, 2);
table.setModel(tableModel);
table.getColumnModel().getColumn(0).setCellEditor(new ComboCellEditor(items));
getContentPane().add(table);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
pack();
private class ComboCellEditor extends AbstractCellEditor implements TableCellEditor {
private JComboBox comboBox;
public ComboCellEditor(Object[] items) {
this.comboBox = new JComboBox(items);
AutoCompleteDecorator.decorate(this.comboBox);
public Object getCellEditorValue() {
return this.comboBox.getSelectedItem();
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
comboBox.setSelectedItem(value);
return comboBox;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
new AutoCompleteCellEditorTest().setVisible(true);
}Problem 1: Starting to 'type' into the AutoCompleteDecorate combo box doesn't cause it to start editing. You have to hit F2, it would appear. I've also noticed this behaviour with other JComboBox editors. Ideally that would be fixed too. Not sure how to do this one.
Problem 2: After editing has started (say, with the F2 key), you may start typing. If you type one of A, B, C, or D, the item appears. That's all good. Then you try to 'complete' the edit by hitting the 'enter' key... and nothing happens. The 'tab' key works, but it puts you to the next cell. I would like to make the 'enter' key stop editing, and stay in the current cell.
I found some stuff online suggesting you take the input map of the table and set the Enter key so that it does the same thing as tab. Even though that's not exactly what I desired (I wanted the same cell to be active), it didn't work anyway.
I also tried setting a property on the JComboBox that says that it's a table cell editor combo box (just like the DefaultCellEditor), but that didn't work either. I think the reason that fails is because the AutoCompleteDecorator sets isEditable to true, and that seems to stop the enter key from doing anything.
After tracing endless paths through processKeyBindings calls, I'm not sure I'm any closer to a solution. I feel like this should be a fairly straightforward thing but I'm having a fair amount of difficulty with it.
Thanks for any direction you can provide!Hi Jeanette,
Thanks for your advice. I looked again at the DefaultCellEditor. You are correct that I am not firing messages for fireEditingStopped() and fireEditingCancelled(). Initially I had copied the behaviour from DefaultCellEditor but had trimmed it out. I assumed that since I was extending AbstractCellEditor and it has them implemented correctly that I was OK. But I guess that's not the case! The problem I'm having with implementing the Enter key stopping the editing is that:
1) The DefaultCellEditor stops cell editing on any actionPerformed. Based on my tests, actionPerformed gets called whenever a single key gets pressed. I don't want to end the editing on the AutoCompleteDecorated box immediately -- I'd like to wait until the user is happy with his or her selection and has hit 'Enter' before ending cell editing. Thus, ending cell editing within the actionPerformed listener on the JComboBox (or JXComboBox, as I've made it now) will not work. As soon as you type a single key, if it is valid, the editing ends immediately.
2) I tried to add a key listener to the combo box to pick up on the 'Enter' key and end the editing there. However, it appears that the combo box does not receive the key strokes. I guess they're going to the AutoCompleteDecorator and being consumed there so the combo box does not receive them. If I could pick up on the 'Enter' key there, then that would work too.
I did more reading about input maps and action maps last night. Although informative, I'm not sure how far it got me with this problem because if the text field in the AutoCompleteDecorator takes the keystroke, I'm not sure how I'm going to find out about it in the combo box.
By the way, when you said 'They are fixed... in a recent version of SwingX', does that mean 1.6.2? That's what I'm using.
Thanks!
P.S. - Maybe I should create a new question for this? I wanted to mark your answer as helpful but I already closed the thread by marking the answer to the first part as correct. Sorry!
Edited by: aardvarkk on Jan 27, 2011 7:41 AM - Added SwingX versioning question. -
How to make some fields in ALV tree editable
Hello All,
Can any one tell me how to make some fields in ALV tree editable.
If possible please post some code.
Regards,
Lisa.Hi Lisa,
I want to make 3 fields in the ALV tree editable and update the saved values in ztable.
I tried making the wa_fieldcat-edit = 'X' But in vain.
Also i made the layout fields wa_layout-edit = 'X' and wa_layout-edit_mode = 'X'.
But still the alv tree field appears as display.
As you have mentioned in the post as answered, So please guide me to make the field editable.
I am using oops method.
Please provide me code if any.
Thanks & Regards,
Mozila -
How to make the field in the output ALV report editable ?
Hi,
I have a requirement to make fields like MATNR,WERKS in the output ALV report editable . Could any of you help me with this ?.
Thank you.
Moderator Message: Search.
Edited by: kishan P on Sep 6, 2010 6:35 PMHi
Please for available information on SCN. There are a lot of information on SCN about ALV wit hEDIT functionality.
Regards
Abhii
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