Hi Andreas,

 

Thanks a lot for your answer,

Its ok for the update of the list.

My problem in fact is to obtain the node from the url or XMLHttpRequest when
you say: 

 “you can query a new array from the database on the server using a 
network request (XMLHttpRequest and getURL).”

I would like to use the same fonctions that I use to retrieve geometry (I
already use helpers_functions.js for that).

I don’t know how to retrieve data that is not <g> or that is not XML like an
array of elements…

Am I obliged to integrate it in a <g> element in my svg before to use it
through a js script?

Pascal BENOIST
Mob: +33 (0)6 12 61 68 02
Fixe: +33 (0)4 50 75 17 74

  _____  

De : [email protected] [mailto:[EMAIL PROTECTED]
De la part de Andreas Neumann
Envoyé : mercredi 2 août 2006 15:53
À : [email protected]
Objet : [svg-developers] Re: populate a carto.net selectionList

 

HI Pascal,

its actually easier than that. You don't need to remove and add 
individual elements, you can simply replace the property 
".elementsArray" of the second selectionList, e.g.
-------
selectionList2.elementsArray = newArray;
selectionList2.selectElementByPosition(0,false);
-------

note that I propose to also call the method
.selectElementByPosition() to make sure that the second 
selectionlist now displays a valid value of the new array.

As an example see http://www.carto.
<http://www.carto.net/papers/svg/gui/selectionlist/>
net/papers/svg/gui/selectionlist/
index.svg

see the two selectionlists at the upper right.

See http://www.carto.
<http://www.carto.net/papers/svg/gui/selectionlist/init.js>
net/papers/svg/gui/selectionlist/init.js and the 
function "updateNumbers2" to see how I set the new values.

you can query a new array from the database on the server using a 
network request (XMLHttpRequest and getURL).

The same also works for comboboxes: see http://www.carto.
<http://www.carto.net/williams/> net/williams/
yosemite/, go to the "Search" tab and enter something in the texbox. 
As you type the values in the combobox are populated with the results 
of a database query.

Hope this helps,
Andreas

--- In svg-developers@ <mailto:svg-developers%40yahoogroups.com>
yahoogroups.com, 
"pascal.benoist" <[EMAIL PROTECTED]> wrote:
>
> Hello,
> 
> I just developpe a little query builder for my svg application and 
i 
> use SelectionLists from carto.net
> 
> I would like to populate automatically a selectionList from the 
> choice made in a preceding selectionList.
> First, I create 2 selectionLists (selectionList1 and 
selectionList2) 
> The first one is populated directly at the creation.
> The second one is first populated with a empty array.
> 
> I choose a value in SelectionList1
> Then , I run a PHP script with this parameter, request my DB (I 
> request :
> DESCRIBE <MyTable> ) with <MyTable> the item selected in 
> selectionList1 Then, I would like to automatically populate 
> selectionList2 with the values return from the request (those 
values 
> are the Fields of <MyTable>)
> 
> Would you have any tutorial that explain that?
> 
> Secondly, I cannot understand why the above Javascript code does 
not 
> work :
> function updateSelectionList 
> selectionListName,selectedIndex,selectedValue)
> {
> // reinitialisation de selectionListDynLayer
> position = 0;
> while
> (selectionListDynLayer.selectElementByPosition(position,false)) {
> MyAlert("deleting element position " + position 
> + " : " + selectionListDynLayer.getCurrentSelectionElement());
> 
> selectionListDynLayer.deleteElement
> (selectionListDynLayer.getCurrentSelectio
> nElement());
> position++;
> }
> 
> MyAlert("selected : " + selectedValue);
> selectionListArray = new
> Array(getSelectionListArray(selectedValue));
> 
> MyAlert("selectionListArray : " + selectionListArray);
> for (i=0;i<selectionListArray.length;i++) {
> selectionListDynLayer.addElementAtPosition(selectionListArray
> [i],i);
> }
> }
> 
> function getSelectionListArray(MyTable) {
> PHPFileName = "../files/getSelectionListArray.php?MyTable=" 
> + MyTable;
> getDataObjSelectionListArray.url=PHPFileName;
> getDataObjSelectionListArray.getData();
> }
> 
> function callbackSelectionListArray(theNode) {
> MyAlert("callback:" + printNode(theNode));
> return theNode; // not sure it is a good idea ...
> }
> 
> Thanks
>

 

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