I am with you that the loading indicator is never displayed when using a
ListDataProvider. Using GWT 2.5, I tried all the methods mentioned in this
thread, and none of them worked. So I came up with the following hack,
which essentially temporarily hijacks the empty table widget for use as a
loading indicator...
// I call this method just prior to starting to async reload my data
and update my ListDataProvider
public void showLoadingIndicator() {
this.emptyTableWidget = getEmptyTableWidget();
setEmptyTableWidget(getLoadingIndicator());
this.listDataProvider.getList().clear();
this.listDataProvider.flush();
}
// I call this method after my I've updated the data in my
ListDataProvider
public void hideLoadingIndicator() {
setEmptyTableWidget(this.emptyTableWidget);
}
--Ian
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