Hi Gregg, The problem is, that the SelectItem, which you add via javascript, is not included in SelectItemSupport.getSelectItemCount(component).
Looking at the code of shuttle.js, I found out that addItem() also adds the new item to a hidden field in the form with name clientId:items. So the server should know that you added the related item. However, I could not find the server side code, which does that. Maybe anyone else knows where this is accomplished. Regards, Jakob Korherr 2009/12/11 <[email protected]> > I have a Select Many Ordered Shuttle working in a faces page. The tag > documentation contract for the shuttle states: > > ------------------------------------------ > -- JavaScript proxies -- > > In some cases, developers will need to use JavaScript to manipulate or use > the contents of the lists. This may be required as actions for the buttons > or icons in the shuttle footers or outside the shuttle all together. Thus, a > set of Javascript utility methods are available that operate on the lists. > These are located in the shuttle.js Javascript library, which is > automatically loaded if you use the shuttle. > > These methods can be accessed by creating a ShuttleProxy instance based on > the shuttle client ID and form. > // create the proxy object > var proxy2 = new ShuttleProxy("testShuttle2", "testForm2"); > > Once the proxy is created, you can use it to gain information about the > lists or to manipulate the lists in the shuttle. The proxy provides the > following functions: > ... > addItem(leadingList, index, text, value, description) : adds an item at the > given index to a list. The item is added to the leading list if leadingList > is true, otherwise it is added to the trailing list. The index should be 0 > based. Thus, to insert an item at the end of a list, set index to > shuttleProxy.getItemCount(leadinglist). The text parameter specifies the > display text for the item, while the value parameter specifies the value > that represents this item upon form submission. The description parameter > specifies a description of the item. The description parameter can be > omitted > .... > > ------------------------------------------- > > I have written the JavaScript code to add an item to the shuttle and this > works at the client end; however, when I try and submit the shuttle lists, > the server end fails when it gets to class > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SelectManyShuttleRenderer > when it is decoding the submitted list in method getSubmittedValue as shown > below: > > protected Object getSubmittedValue( > FacesContext context, > UIComponent component, > String clientId) > { > // Since we override getSubmittedValue() entirely, > // detect auto submit manually > detectAutoSubmit(context, component, clientId); > > String trailingId = clientId + ":trailing:items"; > String paramValue = (String) context.getExternalContext(). > getRequestParameterMap().get(trailingId); > if ((paramValue == null) || "".equals(paramValue)) > return new String[0]; > > List<String> list = new ArrayList<String>(); > StringTokenizer tokenizer = new StringTokenizer(paramValue, ";"); > > // don't let the submitted list get any bigger than the number of > // total items in the shuttle > int availableItems = SelectItemSupport.getSelectItemCount(component); > int numItems = 0; > while (tokenizer.hasMoreElements()) > { > numItems++; > if (numItems > availableItems) > { > _LOG.severe("SELECTED_SHUTTLE_ITEMS_EXCEEDED_TOTAL_NUMBER", > clientId); > return new String[0]; > } > > list.add(tokenizer.nextToken()); > } > > The check to confirm that the number of submitted items is not greater than > the original shuttle list already in existence at the server end, stops any > user from adding an additional item to the shuttle. I understand that this > may have been done to protect against an attack where someone sends in a > huge list of shuttle items, BUT this seems to be in direct conflict with the > shuttle contract above that states that I should be able to add one or more > items to a shuttle at the client end. I don't believe the intention was > simply to add items to the shuttle at the client end without submitting it. > > I was unable to find any examples, working or otherwise, anywhere that > demonstrate said functionality. > > Given the above, if this getSubmittedValue code is correct and the addItem > contract is also correct, how does one add an item to an existing shuttle > AND submit it to the server? > > -=> Gregg <=- > > >
