Friday, August 30, 2013

Re: EditTextCell column fires update when clicked if using SiingleSelectionModel


That worked for me, although the line numbers were slightly different.  I edited code from 2.5.1 - was yours based on an earlier version?

I'm still trying to figure out the logic flow, given that the issue doesn't occur until I add a selection model.

I like the selection cell concept.  I've made a radio group cell to handle a set of radio buttons, but the drawback has been that it takes up a lot of space.  Your concept layered on top of that might be a good solution, especially if I can use a popup when the buttons are displayed. (General thought - it seems like a generic popup cell might be useful, which things like DatePickerCell could extend, but that would also give inherited logic for any other sort of custom popup cell I'd want to create.)

On Sunday, August 25, 2013 12:25:33 PM UTC-4, Steve C wrote:
In a simple celltable, if I set a SingleSelectionModel, then clicking on an EditTextCell triggers the updater for that column, even though the editor doesn't even open (and the value is the current value).  Without the selection model this doesn't happen.

Is this expected behavior?

I've pasted sample code below.

Also worth noting is the behavior if I hit Enter to clear the alert box - that triggers whatever enter would do on the cell (like open it for editing). Better yet, try editing a cell, and clicking on a different row, then using Enter to close all of the alerts that come up.

public class EditTextCellBug implements EntryPoint {
    public void onModuleLoad() {
        List<Bean> list = new ArrayList<Bean>();
        list.add(new Bean("John"));
        list.add(new Bean("Jane"));
        ListDataProvider<Bean> provider = new ListDataProvider<Bean>(list);
        // problem occurs whether we use explicit key provider or not
        CellTable<Bean> ct = new CellTable<Bean>(provider);
        Column<Bean, String> col = new Column<Bean, String>(new EditTextCell()) {
            public String getValue(Bean b) {
        col.setFieldUpdater(new FieldUpdater<Bean, String>() {
            public void update(int index, Bean b, String value) {
                Window.alert( + " updating to " + value);
       = value;
        // problem doesn't occur if we don't set the selection model
        SingleSelectionModel<Bean> selModel = new SingleSelectionModel<Bean>();
        // doesn't fire updater - only manual selection does
        selModel.setSelected(list.get(0), true);
class Bean {
    public String name;
    public Bean(String name) { = name;

As a side note, with the single selection model in place, it takes a second click to open the cell for editing if the row wasn't currently selected. (I think I may have a misunderstanding of the role of a selection model, since it doesn't seem to be needed for simple editing, and there are three states a row can have, no bg, yellow bg, and blue, using the default styling.  Do I only need one if I actually want to "do something" with the user's selection?)

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