Checkboxes: How do you use them to select geometries for display, MapViewer

Question

Dear all
I am working in Oracle 10.2 and using PL/SQL. I am trying to create a procedure that generates a list of spatial layers, based on those currently contained in the database, which uses checkboxes, so that users can select which layers to display.
Once the user has made his choices and the results are submitted, the chosen layers are displayed through MapViewer. Currently the procedure, which is still being developed, is as follows:
PROCEDURE MAPLIST AS
CURSOR curmaplist IS
  SELECT spatial_map_name
         spatial_map_id
         geom
   FROM spatial_map_table;
  varmaplist curmaplist%ROWTYPE;
   varchecked VARCHAR2(32767);
BEGIN
FOR varmaplist in curmaplist LOOP
  htp.print('<FORM>
              <UL>
               <LI>
                <LABEL FOR="SM_ID||
                            curmaplist.spatial_map_id||">
                 <INPUT type="checkbox"
                        id="SM_ID||
                            curmaplist.spatial_map_id||"
                        name="SM_ID||
                              curmaplist.spatial_map_id||"
                        value="MAP TITLE: ||
                               curmaplist.spatial_map_name" />
                </LABEL>
               </LI>
              </UL>
             </FORM>'
  EXIT WHEN curmaplist%NOTFOUND;
   END LOOP;
END;I am not sure how to incorporate the checked element and then make use of it. Regarding subsequent use, I wondered if an IF statement could be used.
IF VARCHECKED = 'CHECKED' THEN...after this MapViewer XML is added, with the select statement making use of the cursor. For example:
select curmaplist.geom
from geg50160.spatial_map_tableFor the checked part itself, I have found the following Oracle code in Chapter 11 of Oracle Database Application Developer’s Guide - Fundamentals 10.2.
CREATE OR REPLACE PROCEDURE handle_checkboxes ( checkboxes owa_util.ident_arr )
AS
BEGIN
FOR i IN 1..checkboxes.count
LOOP
htp.print('<p>Checkbox value: ' || checkboxes(i));
END LOOP;
END;
/However I am not certain how I would incorporate that into my code. I take it i refers to the checkbox value. I've read that .ident_arr is an array which can hold multiple values but if so I am also not sure why checkboxes are counted.
Kind regards
Tim

Answer 1

Hi GKaiseril,
Thanks for your reply.  That's what I'm attempting to do, but I'm largely trying to "borrow" on-line JavaScript (see below) & modify for my PDF Form, w/ rudimentary knowledge gained while surfing the web.  The Form has 30 checkboxes that I want to limit users to a max. of 4.
So any add'l scripting tips would be most appreciated.
Thanks!
var NewCount = 0
getField("Check_Box1").value === "Yes"
{NewCount = NewCount + 1}
getField("Check_Box2").value === "Yes"
{NewCount = NewCount + 1}
getField("Check_Box3").value === "Yes"
{NewCount = NewCount + 1}
getField("Check_Box4").value === "Yes"
{NewCount = NewCount + 1}
getField("Check_Box5").value === "Yes"
  {NewCount = NewCount + 1}
if (NewCount == 4)
app.alert(“Pick Just Four Please”); return false;