FileItem and UploadItem don't fire changedHandler

[tdk]

I have a problem with FileItem and UploadItem:

in order to enable an (upload) button, I need to know, when the user has selected a file.
I added a changed handler to my items, but it never fires.

Following is some test code, which illustrates this:

package org.yournamehere.client;

import com.google.gwt.core.client.EntryPoint;

import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.fields.ButtonItem;
import com.smartgwt.client.widgets.form.fields.FileItem;
import com.smartgwt.client.widgets.form.fields.SubmitItem;
import com.smartgwt.client.widgets.form.fields.UploadItem;
import com.smartgwt.client.widgets.form.fields.events.ChangedEvent;
import com.smartgwt.client.widgets.form.fields.events.ChangedHandler;
import com.smartgwt.client.widgets.form.fields.events.ClickEvent;
import com.smartgwt.client.widgets.form.fields.events.ClickHandler;

public class MainEntryPoint implements EntryPoint {
    private DynamicForm form = new DynamicForm();
    private FileItem fileName = new FileItem("fi", "Select");
    private SubmitItem doit = new SubmitItem("upload", "Upload");
    private ButtonItem save = new ButtonItem("save", "Save");

    public void onModuleLoad() {
        doit.setDisabled(true);
        save.setDisabled(true);
        fileName.addChangedHandler(new ChangedHandler() {
            @Override
            public void onChanged(ChangedEvent event) {
                System.err.println("FI Changed");
                save.setDisabled(false);
            }
        });
        UploadItem uli = new UploadItem("UploadItem", "Select file");
        uli.addChangedHandler(new ChangedHandler() {
            @Override
            public void onChanged(ChangedEvent event) {
                System.err.println("ULI Changed");
                doit.setDisabled(false);
            }
        });
        save.addClickHandler(new ClickHandler() {
           @Override
           public void onClick(ClickEvent event) {
               System.err.println(fileName.getDataPath()+" "+fileName.getValue());
               form.saveData();
           }
        });

        form.setCanSubmit(true);
        form.setAction("/upload");
        form.setItems(uli, doit, fileName, save);
        form.draw();
    }
}

Is there any other flag that I need to set on the form or field for the handler to fire?

I'm using GWT 2.0.4 and SmartGWT 2.3

[tdk]

Please, anybody out there can help me with this?!?!?!

Isomorphic, are you still there?

[phuqit]

AFAIK, this event is browser dependent, and unreliable. You can do this instead:

Map<String, String> errors = new HashMap<String, String>();
if (uploadItem.getValueAsString() != null) {
// submit form
} else {
errors.put("uploadfile", "No file selected");
}
this.setErrors(errors, true);


Displays the (!) next to the input field.

regards,
Andrius