Javascript to check if a checkbox is selected in datatable

Hi,
I have a form with some command buttons and couple of datatables with checkboxes in one of the columns. How do I make sure when a user clicks on any command button to generate an action only if any checkbox is selected else shows an error to atleast select one checkbox. Is it possible do that using javascript rather than on the server side. Any small example will help.
Thanks

Hi Detlev,
I searched for the file controls_ie5.js. But I have only one function for cell click in js file. I didnt get any methods you mentioned in the reply.
The workaround I could see is, get the name of the tableview control using 'myContext.getParamIdForComponent("tableviewcontrolname")'. Then append '-chk'(that is the name generated dynamically for the radio button in the HTML page). With this we can do a javascript validation if a radio button is selected. The only disadvantage is if they change the naming conventions(say instead of -chk if they use _chk) for HTMLB implementation this code will fail.
In another post I saw a reply from Stephan Batzdorf for similar post. He says, "Now to the client side. The only thing you can do on client-side is to retrieve the selected rows and get the values from the key column.
It's not possible to manipulate data. Of course you can render InputFields into table cells and let the user manipulate them, but then you have to retrieve each value for each InputField again on server side (pageContext.getComponentForId(tableCellInputFieldId);)."
Does he say we cant get the value of inputfield in the client side?
I will definitely award points once the problem is fixed.
Regards,
Priya

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Hi,
I have this working in HTML, but when trying to simulate the same in JSF, I get error.
<input id="checkbox1" type="checkbox" onClick="selecionatudo(true,1)"/>
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Hi!
I think that:
If you have pairs of checkboxes to make actions, you can try to set id in Jsf like this " checkBoxA1" and "checkBoxA2".
Then in JavaScript, you can get de string "checkBoxA" and build the two id's, adding and "1" and "2".
Later, you can do that you want.
But, I think that in JavaScript across Jsf, you can't use "frm.checkbox1", i think that you must use: "document.getElementById("checkbox1").
I'm a starter in Jsf and very bad with English, but I hope that it help you!
Regards!

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HI,
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Thanks in Advance
Regards,
Gangolu

Hi
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data: begin of i_sales occurs 0,
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end of i_sales.
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v_fieldcat-seltext_m = 'check'.
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Regards
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version 4.0.2.00.06
Hello,
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Hi,
here
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This code:
if (checkBoxCSharpShown.IsChecked)
checkBoxCSharpShown.IsChecked = false;
elicits:
"Cannot implicitly convert type 'bool?' to 'bool'. An explicit conversion exists (are you missing a cast?)"
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Delphi ancient/C# newbie

So why is this so complicated? Why doesn't a check box have a true/false value? The answer is that a checkbox can (optionally and not by default) be a three-state control.
When ThreeState is true, the checkbox has three states:
Checked
Not Checked
Indeterminate
They correspond to these tests:
bool checked = IsChecked.HasValue && IsChecked.Value == true
bool unchecked = IsChecked.HasValue && IsChecked.Value == false
bool indeterminate = IsChecked.HasValue == false
One of the ways a three-state checkbox is used is in a property dialog. If the user selects multiple items (all having some boolean property called 'Active'--for instance), what should the proprety dialog show for that selection if the value of Active is different among the selected items? Should it show True? That wouldn't work, they are not all True, same for False. So instead the property dialog would show Indeterminate, indicating that the collection of Active values is neither True, nor False.
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I have a DataGrid that has checkbox in the first column. The user wants to be able to check/uncheck the checkbox when he selects a row, by mouse or up and down keys, and hits the spacebar. Currently the spacebar functions if the last thing that the use has clicked on is the Checkbox. If the user clicks in the cell where the checkbox in located(not the checkbox itself), the spacebar won't do anything.
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Your TableModel has to indicate that the column is editable. Your TableModel also has to implement setValueAt() so that when the user changes the value, it updates the data.
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Show the checkbox as selected by selecting the row.

Hi friends,
I have a table. It is possible to select multiple rows, after selecting rows, I get the selected
rows in this table from the context. Now my question is, how can i cause that by selecting a row
the checkbox on this row will be also selected (shown as checked)?
So this is the coding in the eventhandlermethod on onselect property of the table:
METHOD onactionmark_cb .
DATA lo_nd_table_data TYPE REF TO if_wd_context_node.
DATA lo_el_table_data TYPE REF TO if_wd_context_element.
DATA ls_table_data TYPE wd_this->element_table_data.
DATA lt_table_data TYPE wd_this->elements_table_data.
DATA lt_set TYPE wdr_context_element_set.
DATA lv_idx TYPE i.
navigate from <CONTEXT> to <TABLE_DATA> via lead selection
lo_nd_table_data = wd_context->get_child_node( name = wd_this->wdctx_table_data ).
This would now contain the references of all the selected rows
CALL METHOD lo_nd_table_data->get_selected_elements
    RECEIVING
      set = lt_set.
LOOP AT lt_set INTO lo_el_table_data.
    " Use the references to get the exact row data
    CALL METHOD lo_el_table_data->get_static_attributes
      IMPORTING
        static_attributes = ls_table_data.
    APPEND ls_table_data TO lt_table_data.
    CLEAR ls_table_data.
ENDLOOP.
mark/shhow the checkboxes checkd in the selected rows
ENDMETHOD.
Thank you for any help
Haleh
Edited by: Haleh Mir Ashrafi on Nov 9, 2008 6:29 PM

Hi Haleh,
I tried replicating your requirement and have written below the exact working code for the same. I will try to explain you my component so that you can get to understand its functionality. I have 2 tables & 1 input field in my view. The user enters a customer number in the input field and presses on a button. This leads to the corresponding sales orders filled into the 1st table ui element. The user then selects multiple rows from this table and presses on a toolbar button to copy these selected rows to the 2nd table. Within the same event I also set the checkbox for the rows selected by the user in the 1st tables row to selected. Hope that this would meet your requirement. On pressing the button the system would check if the checkbox is enabled & then mark the selected rows checkboxes as selected and would also copy the rows to the 2nd table. If the checkbox is disabled then the system would neither set it as checked nor copy it to the 2nd table. The rest of the checkboxes for the rows which weren't selected by the user remain as unchecked.
METHOD onactioncopy_selected_rows .
DATA: wd_node TYPE REF TO if_wd_context_node,
         ls_node1 TYPE ig_componentcontroller=>element_node1,
         lt_node1 TYPE ig_componentcontroller=>elements_node1,
         wa_temp TYPE REF TO if_wd_context_element,
         lt_temp TYPE wdr_context_element_set.
wd_node = wd_context->get_child_node( name = 'NODE1' ).
" Get all the context element information for the rows selected by the user
CALL METHOD wd_node->get_selected_elements
    RECEIVING
      set = lt_temp.
" Just get the reference of the 2nd table to which you want to copy selected rows
wd_node = wd_context->get_child_node( name = 'NODE2' ).
LOOP AT lt_temp INTO wa_temp.
    CALL METHOD wa_temp->get_static_attributes
      IMPORTING
        static_attributes = ls_node1.
    " Check if the checkbox is disabled/enabled. The "enabled" property of the checkbox
    " is bound to the boolean context attribute by name ENABLED
    IF ls_node1-enabled EQ abap_true.
      wa_temp->set_attribute( EXPORTING name = 'CHECKBOX'
                                        value = abap_true ).
      APPEND ls_node1 TO lt_node1.
      CLEAR ls_node1.
    ENDIF.
ENDLOOP.
" Bind the rows selected by the user to the 2nd table ui element
wd_node->bind_table( new_items = lt_node1 ).
ENDMETHOD.
I have checked your code where you say like:
IF elem_test->is_selected( ) = abap_true AND stru_test-enabled = abap_false.
You had earlier fetched the entire elements list using the get_elements method of if_wd_context_node & then checking each 1 of them individually to determine whether it was selected or not using the method id_selected. You can directly get only the elements which were selected by the user by using the method get_selected_elements instead. So now you will only have to check whether the checkbox field in that particular row is disabled/enabled. You now don't have to combine 2 conditions using AND & check them within the loop.
Regards,
Uday

Populating checkbox with selected

I am trying to figure out how to display whether a user has selected an item in a checkbox. This requires two queries, one to get the locations and the second to check if the user has selected the location or not.
I just dont know how to loop through both of these queries to add "SELECTED" to the checkbox fields.
Code below only works if the user has selected one item previously. If more than one item, each location is listed twice, but the correct items are checked.
<%
String locations_query = "SELECT * FROM Client_Location WHERE Client_ID= '"+ Client_ID_form +"'";
ResultSet locations_myResultSet = stmt.executeQuery(locations_query);
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     %>
<%
String cust2_query = "SELECT Location_ID, Location_Name FROM Customer_Locations ORDER BY Location_Name";
ResultSet cust2_myResultSet = stmt.executeQuery(cust2_query);
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%>
     <%
       locations_myResultSet.close();
%>Thank you for your time.

Not worked on jsp. however in java, a checkbox is either selected or not selected, so you can use checkboxitem.isSelected().

Putting a check box above column for selection in WD ALV

Hi,
Can anyone provide me a code snippet and help me how I can
provide a check box above column for selection in WD ALV.
Best Regards
Sid

Hi Sid,
As far as I know we cannot put checkboxes directly above the Column headers.
You can achieve this functionality in a round above method
You can create a group of checkboxes above your ALV table with names of columns to be selected beside each check box and proceed with your further processing.
Also If you are just looking at which columns you need to select to be shown on the
ALV output
data: lr_standard_functions type ref to if_salv_wd_std_functions.
lr_standard_functions ?= wd_this->r_table.
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Regards,
Ismail.
Edited by: Ismail Basha on Jan 23, 2008 1:47 PM
Edited by: Ismail Basha on Jan 24, 2008 3:23 AM

Javascript to check if a checkbox is selected in datatable

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