Looking back in time, I found the problem. It was Java autoboxing
wackiness which happened to manifest itself @ the wrong time. There is
discussion about it on http://bexhuff.com/java-autoboxing-wackiness.
Figured someone might be interested.
-J
On Friday, January 14, 2011 7:57:30 PM UTC+1, Jirka wrote:
>
> Hello all,
>
> I have a strange problem with my code not working when deployed even
> though it works fine in my dev environment (Eclipse GWT plugin). It
> is a simple widget in a dialog box that gets opened when one clicks on
> a hyperlink in maps info window.
>
> The widget has one ListBox and TextArea and when one switches item in
> the ListBox it updates the TextArea with corresponding text and saves
> the text from the TextArea that was selected before. The ListBox gets
> its data via RPC from app engine on load and the data for the TextArea
> is passed to the widget constructor on creation, previously also
> fetched via RPC from the app engine. The ListBox represents area of
> study, while the TextArea is a goal for that area.
>
> My problem is that when deployed, switching items in the ListBox does
> not switch the text at all. I debug this using Window.alert
> onChange() and I know that the data the dialog gets from the app
> engine are correct and are all there on load from another
> Window.alert() debug box I put in. However when I switch items, the
> Window.alert debug box says there are no goals set for that area of
> study, even though when the dialog first loads, the debug box shows
> they are all there. The first item selected does have correct text on
> load but the rest is just gone. The ListBox data is also fine. Also
> the data is there because it is also correctly displayed in the info
> window. What is wrong? Where is the problem since it works fine in
> my dev. environment but not when deployed?
>
> Here is the code for the form
>
> public class DotaznikForm extends Composite {
>
> private final OkruhyServiceAsync okruhyService = GWT
> .create(OkruhyService.class);
> private final Dotaznik dotaznik;
> private final List<Okruh> okruhy = new LinkedList<Okruh>();
> private VerticalPanel vp = new VerticalPanel();
> private final TextArea textCile = new TextArea();
> private final ListBox okruhyListBox = new ListBox();
> private int lastSelected;
>
> DotaznikForm(Dotaznik d) {
> this.dotaznik = d;
>
> ((ServiceDefTarget) okruhyService)
>
> .setServiceEntryPoint("/volebnicile/okruhyService");
>
> okruhyService.getOkruhy(new AsyncCallback<Okruh[]>() {
>
> @Override
> public void onSuccess(Okruh[] result) {
> // The first debug alert on load
> StringBuffer s=new StringBuffer("Number of
> cilu:
> "+dotaznik.getCile().size()+"\n\n");
> for (Cil c:dotaznik.getCile())
> s.append("ID: "+c.getId()+" --->
> "+c.getTextCile()+"\n");
> Window.alert(s.toString());
>
> for (Okruh o : result) {
>
> okruhyListBox.addItem(o.getPopisOkruhu());
>
> }
> okruhy.addAll(Arrays.asList(result));
> okruhyListBox.setSelectedIndex(0);
> if (!dotaznik.getCile().isEmpty()) {
>
> textCile.setText(getCilByOkruh(getSelectedOkruh()).getTextCile());
> }
>
> okruhyListBox.setWidth("50em");
>
> textCile.setSize("50em", "30em");
>
> okruhyListBox.addClickHandler(new
> ClickHandler() {
> @Override
> public void onClick(ClickEvent
> event) {
>
> setLastSelected(okruhyListBox.getSelectedIndex());
>
> }
> });
>
> okruhyListBox.addChangeHandler(new
> ChangeHandler() {
> @Override
> public void onChange(ChangeEvent
> event) {
> saveDotaznik();
> updateDotaznikForm();
> }
> });
>
> vp.setSpacing(5);
> vp.add(okruhyListBox);
> vp.add(textCile);
> }
>
> @Override
> public void onFailure(Throwable caught) {
> Window.alert("getOkruhy:There was an error
> getting data from
> server");
> }
> });
>
>
> initWidget(vp);
> }
>
> private void updateDotaznikForm() {
> Cil c = getCilByOkruh(getSelectedOkruh());
>
> if (c != null) {
> Window.alert("Cil: "+c.getTextCile()+"\nOkruh:
> "+getSelectedOkruh().getPopisOkruhu());
> textCile.setText(c.getTextCile());}
> else {
> Window.alert("Pro Okruh
> "+getSelectedOkruh().getPopisOkruhu()+"neni
> definovan zadny cil");
> textCile.setText("");}
> }
>
> private Cil getCilByOkruh(Okruh o) {
> if (dotaznik.getCile() != null)
> for (Cil c : dotaznik.getCile())
> if (c.getOkruhKey() == o.getId())
> return c;
> return null;
> }
>
> private Okruh getOkruhByPopis(String popis) {
> for (Okruh o : okruhy)
> if (o.getPopisOkruhu().equals(popis))
> return o;
> return null;
> }
>
> private Okruh getSelectedOkruh() {
> return
> getOkruhByPopis(okruhyListBox.getItemText(okruhyListBox
> .getSelectedIndex()));
> }
>
> private void saveDotaznik() {
> Okruh o =
> getOkruhByPopis(okruhyListBox.getItemText(getLastSelected()));
> if (this.dotaznik.getCile().isEmpty() && !
> textCile.getText().equals(""))
> this.dotaznik.addCil(new Cil(textCile.getText(),
> o));
> else {
> Cil c = getCilByOkruh(o);
> if (c == null && !textCile.getText().equals(""))
> this.dotaznik.addCil(new
> Cil(textCile.getText(), o));
> else if (c != null &&
> !textCile.getText().equals(""))
> c.setTextCile(textCile.getText());
> else
> dotaznik.deleteCil(c);
> }
> }
>
> protected void closeDotaznik() {
> if (textCile.getText().equals(""))
>
> dotaznik.deleteCil(getCilByOkruh(getSelectedOkruh()));
>
> else {
> Cil c=getCilByOkruh(getSelectedOkruh());
> if (c==null)
> dotaznik.addCil(new
> Cil(textCile.getText(), getSelectedOkruh()));
> else
> c.setTextCile(textCile.getText());
> }
> }
>
> protected Dotaznik getDotaznik() {
> return this.dotaznik;
> }
>
> private void setLastSelected(int i) {
> lastSelected = i;
> }
>
> private int getLastSelected() {
> return lastSelected;
> }
> }
>
> and here is a code that creates it and shows it in a dialog
>
> @Override
> public void onClick(ClickEvent event) {
> ds.getDotaznik(o.getDotaznikId(), new
> AsyncCallback<Dotaznik>() {
>
> @Override
> public void onFailure(Throwable caught) {
> Window.alert("getDotaznik: There
> was an error getting data from
> server");
> }
>
> @Override
> public void onSuccess(Dotaznik result) {
> DotaznikForm dotaznikForm;
> if (result == null)
> dotaznikForm = new
> DotaznikForm(new Dotaznik());
> else
> dotaznikForm = new
> DotaznikForm(result);
>
> VerticalPanel dotaznikPanel = new
> VerticalPanel();
> HorizontalPanel buttonPanel = new
> HorizontalPanel();
>
> Button closeButton = new
> Button("Ukoncit");
>
> closeButton.addClickHandler(new
> CloseClickHandler(o,
> dotaznikForm));
>
> buttonPanel.add(closeButton);
> dotaznikPanel.add(dotaznikForm);
> dotaznikPanel.add(buttonPanel);
>
> dotaznikDialog.setWidget(dotaznikPanel);
>
> dotaznikDialog.center();
> dotaznikDialog.show();
> }
> });
> }
> }
>
> Thanks in advance for any help.
>
> -Jirka
>
>
>
>
>
>
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