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);
provider.addDataDisplay(ct);
Column<Bean, String> col = new Column<Bean, String>(new
EditTextCell()) {
@Override
public String getValue(Bean b) {
return b.name;
}
};
col.setFieldUpdater(new FieldUpdater<Bean, String>() {
@Override
public void update(int index, Bean b, String value) {
Window.alert(b.name + " updating to " + value);
b.name = value;
}
});
ct.addColumn(col);
// problem doesn't occur if we don't set the selection model
SingleSelectionModel<Bean> selModel = new
SingleSelectionModel<Bean>();
ct.setSelectionModel(selModel);
RootPanel.get().add(ct);
// doesn't fire updater - only manual selection does
selModel.setSelected(list.get(0), true);
}
}
class Bean {
public String name;
public Bean(String name) {
this.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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