Is it possible to enable/disable table row selection?

I have a situation where a user can add rows to a "selection" table with a value that is used to perform a query to get a collection of objects associated with that value. Once those objects are available, a second "results" table will be populated with the row(s) returned. When the value is entered in the selection table, a web service call is made to perform the query and return the results. This may take a few moments and I am displaying an indeterminate progress indicator for the selection table row involved to indicate that the data is not yet available - the progress indicator is included as a column in the row; each row has its own indicator. Once the results are received the indicator is hidden to indicate the query for that row has completed. The user may enter as many rows in the selection table as they wish so there is a distinct possibility of multiple queries being executed at a given time. I have also attached a row selection listener to the selection table such that when a given row is selected, the results table will display the corresponding associated row(s).
What I'd like to be able to do is somehow temporarily disable the selection of any row that has a query in progress, while leaving other rows whose queries have completed be selectable. Once the query completes, the row can then become selectable, thus allowing for the results to be loaded and displayed in the results table. The way it works right now, if the row is selected while the query is still in progress, nothing is displayed (obviously), but then the row has to be re-selected after the query has completed to see the results. This is a viable (though undesirable) solution/workaround if there is at least one other row in the table. However, if the row is the only row in the table and has been selected, it cannot be re-selected (there's no other row to select to allow for re-selection). To boil it down, what I'd like to do is prevent the selection of the row until the query for that row is complete.
After perusing the JavaFX 2.2 API, I'm not seeing any obvious way to achieve this effect. If anyone has any solutions, suggestions, etc. on how this could be done I'd appreciate it greatly.

Here's an [url https://github.com/james-d/Conditionally-selectable-table]example. As predicted, keyboard navigation fails if the keyboard presses would result in an unselectable item being selected using the default selection model. The best workaround I can see for this is to register event filters for the appropriate keyboard strokes, as in the previously referenced thread.
Update: That code won't run in the current (ea b90) release of JavaFX 8.0, and probably a few recent releases; it will however run in the final release (and it runs in JDK 7). See [url https://javafx-jira.kenai.com/browse/RT-30593]RT-30593
Edited by: James_D on May 22, 2013 7:51 PM

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at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:85)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:54)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:247)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:157)
at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.security.jps.wls.JpsWlsFilter$1.run(JpsWlsFilter.java:96)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
at oracle.security.jps.wls.util.JpsWlsUtil.runJaasMode(JpsWlsUtil.java:146)
at oracle.security.jps.wls.JpsWlsFilter.doFilter(JpsWlsFilter.java:140)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:70)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:159)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.dms.wls.DMSServletFilter.doFilter(DMSServletFilter.java:202)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3588)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2200)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2106)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1428)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Please Help I have been struggling with this issue for long.
Thanks and Regards
Manav Ratra
Edited by: user11255144 on Feb 8, 2010 5:33 AM

Hi Arun,
Thanks for replying.
Actually in my application there is one result table and a section that is displaying complete details of the product selectd in result table.
The next/previous buttons are not binded with result table.
What I am doing is, I am puuliing data from VO and displaying it on form, whenever any of these buttons is clicked.
As soon as these buttons are clicked data is coming up, but selection state of table is not getting updated.
So to update selection state i wrote piece of code described in my previous post.
Everything works fine if displayRow property of table is not set to selected.
If i set display row property of table to selected, then i get a null pointer exception with message log defined in previous post.
Although NPE is thrown, yet all data is properly fetched and table selection is also updated. But am not able to get how this NPE is coming and hpw to fix it .
(I need to keep displayRow = selected, for all other cases NPE is not thrown)
Please help..
Thanks and Regards
Manav Ratra

Disable DataGrid row selection for a column?

Hi,
I have a DataGrid with a CheckBox in one column. When the CheckBox itself is clicked, or any point in the CheckBox column
is clicked, I *don't* want the grid row selected. IOW, row selection should be disabled for the column. How to get this behavior?
Thanks, Garry

Hi All,
I do have almost similar requirement where I have image overlay-ed on row, on whose click a context menu should appear but row should not get selected.
Row selection should happen if user clicks elsewhere on that row (apart from overlayed image).
I tried below lines in MouseClick event listeners.
event.stopImmediatePropagation();
event.stopPropagation();
Above lines stopped itemClick event but didnt prevent the row selection.
Regards,
Pavan

How to enable /disable the row in ALV?

Hi Experts,
I have gone through some threads on this but I did not find useful to my requirement.
My requirement is:
Consider two columns : one is set delete column (a button) and another editable field.
When the user presses on set delete button. The editable field should be disabled and it should be enabled whenever the user presses the button again.
Kindly let me know the solution.
Thanks.

Hi,
As i am also new to web dynpro abap. I found it a gud thing to learn about ALV grid.
So, I tried doing it like that and found that its not at all difficult.
Here is the procedure that i followed.
1. Create a context node with two attribute from any table structure and one attribute of type wdy_boolean for controlling the
    enable property of input field.
2. i used the supply function to fill the node. Here is the code for the same.
data lt_dealer type wd_this->Elements_zdealer.             "My node name is zdealer
DATA ls_dealer LIKE LINE OF lt_dealer.
select * from zdealer into corresponding fields of table lt_dealer.
loop at lt_dealer into ls_dealer.
ls_dealer-enable = abap_true.                             "to enable all the fields initially
modify lt_dealer from ls_dealer.
endloop.
node->bind_table( lt_dealer ).
3. create view container UIelment in the view and embed table view of the ALV used comp.
4. add interface controller of SALV_WD_TABLE to the used controller in the view and also add comp controller of our
local comp to the used controller list of interface contrl of Used comp. And then map the data node to the node we have filled in
the supply function.
5. go to the wddoinit method to configure the ALV grid. means adding button and input field and binding the enable property of
input field. Here is the code for the same.
data lo_cmp_usage type ref to if_wd_component_usage.
lo_cmp_usage =   wd_this->wd_cpuse_alv( ).
if lo_cmp_usage->has_active_component( ) is initial.
    lo_cmp_usage->create_component( ).
endif.
DATA lo_INTERFACECONTROLLER TYPE REF TO IWCI_SALV_WD_TABLE .
lo_INTERFACECONTROLLER =   wd_this->wd_cpifc_alv( ).
    DATA lo_value TYPE ref to cl_salv_wd_config_table.
    lo_value = lo_interfacecontroller->get_model(
lo_value->IF_SALV_WD_TABLE_SETTINGS~SET_CELL_ACTION_EVENT_ENABLED( abap_true ).
lo_value->IF_SALV_WD_TABLE_SETTINGS~SET_READ_ONLY( ABAP_FALSE ).
data btn type ref to cl_salv_wd_uie_button.
data inp type ref to cl_salv_wd_uie_input_field.
data col1 type ref to cl_salv_wd_column.
data col type ref to cl_salv_wd_column.
data col2 type ref to cl_salv_wd_column.
call method lo_value->IF_SALV_WD_COLUMN_SETTINGS~GET_COLUMN
exporting
id = 'NAME'                         "col name is NAME (col with button)
receiving
value = col.
call method lo_value->IF_SALV_WD_COLUMN_SETTINGS~GET_COLUMN
exporting
id = 'LOCATION'                "col name is LOCATION (col with input field)
receiving
value = col1.
call method lo_value->IF_SALV_WD_COLUMN_SETTINGS~GET_COLUMN
exporting
id = 'ENABLE'                   "this col is used to control the enable property of input field and we will make it invisible.
receiving
value = col2.
create object btn.
CREATE OBJECT INP
EXPORTING
VALUE_FIELDNAME = 'LOCATION'.
inp->set_enabled_fieldname( 'ENABLE' ).
COL1->SET_CELL_EDITOR( INP ).
btn->SET_TEXT_FIELDNAME( 'NAME' ).
col->set_cell_editor( btn ).
col2->set_visible( '01' ).                     " making the enable col invisible
Now you need to create one eventhanlder for the action of cell action.
for this create an eventhandler and then even col there select ON_CELL_ACTION for the inerface cntrl of ALV.
now write the code in this eventhandler for enabling or disabling the input field after checking the current value and
row number from which the button was clicked. code for the same.
DATA lo_INTERFACECONTROLLER TYPE REF TO IWCI_SALV_WD_TABLE .
lo_INTERFACECONTROLLER =   wd_this->wd_cpifc_alv( ).
    DATA lo_value TYPE ref to cl_salv_wd_config_table.
    lo_value = lo_interfacecontroller->get_model(
data inp type ref to cl_salv_wd_uie_input_field.
data col1 type ref to cl_salv_wd_column.
data str type string.
str = R_PARAM->COLUMN.
data indx type i.
indx = r_param->index.               " this will get the row number
DATA lo_nd_zdealer TYPE REF TO if_wd_context_node.
DATA lo_el_zdealer TYPE REF TO if_wd_context_element.
DATA ls_zdealer TYPE wd_this->element_zdealer.
DATA lv_value LIKE ls_zdealer-enable.
* navigate from <CONTEXT> to <ZDEALER> via lead selection
lo_nd_zdealer = wd_context->get_child_node( name = wd_this->wdctx_zdealer ).
lo_el_zdealer = lo_nd_zdealer->get_element( index = indx ).     " get the corresponding element.
lo_el_zdealer->get_attribute(
    EXPORTING
      name = `ENABLE`
importing
      value = lv_value ).
IF str EQ 'NAME'.
if lv_value eq abap_true.
lo_el_zdealer->set_attribute(
    EXPORTING
      name = `ENABLE`
      value = abap_false ).
else.
lo_el_zdealer->set_attribute(
    EXPORTING
      name = `ENABLE`
      value = abap_true ).
endif.
ENDIF.
this will solve it.
Thanks and Regards,
Sarbjeet singh

Is it possible to increment the table rows automatically?

In my HTML page I created one table with some columns but i'm unable to write code for incrementing the rows dynamically....
i.e.. soon after entering the data in the last column, a new row should be automatically created by pressing enter key (without using any buttons it should create new row).... Is it possible...

I don't think so. You have to trigger an js event to create a new row, I guess. You may need to write lot of javascript code. You can look for some third party grid controls.

ALV Web Dynpro for ABAP enable/disable single row

hi all,
is it possible to change the layout of one single row or cell in a alv (component SALV_WD_TABLE) web dynpro for abap?
i managed to get columns to be editable using the tutorial "Editing ALV in Web Dynpro for ABAP".
but it is not described how to change a single row or cell in this tutorial. also the example programs i found do not get into this subject.
did i miss something?
thanks in advance

Hi,
I think you cannot set the focus to the particular cell.
I think you can loop at that row of that table and set the the cell design to apply some color to differentiate that way rather than focusing so that user can know that he has to do something in that cell.
check out this example salv_wd_test_table_focus
Regards,
Lekha.

Is it possible to validate a table row as a single entity?

JDeveloper - 11.1.1.6
WLS - 10.3.5
I have a requirement to validate a row in a table as a single entity. A database procedure will be passed the values from a given row and several validations performed. There are some field-level validations in the row as well. I had planned to expose an AM method that calls the procedure and then highlights the bad fields.
How can I fire this row validation when the user has completed their edits (clicked off of the current row)? Is there some event I can listen for?
I guess I can have a selectionListener that saves the current row key and when the current row key is different from the saved row key call the validation procedure for the saved row?
Thanks!

That certainly seems much more straight forward.
Thinking more about this more, would it be best to call the validation method from prepareForDML? Or would overriding the validate method and calling from there be a better option?
I am still fairly new to ADF and still trying to grasp some concepts.
Thanks.
Edited by: errodr on May 15, 2013 5:45 AM

Is it possible to enable/disable table row selection?

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