maxTextLength doesn't work on generated Label columns

Support
#1

I placed a table on a form and added a generated column to it with maxTextLength=“30”:

<column id="flatList" caption="msg://flatList" sortable="false" width="300" maxTextLength="30"
 generator="generateFlatListCell"/>

generator:

public Component generateFlatListCell(VisitAssignment entity) {
    if (entity != null && entity.getVaFlats() != null && entity.getVaFlats().size() > 0) {
        Label label = componentsFactory.createComponent(Label.class);
        entity.getVaFlats().sort(Comparator.comparing(Flat::getFlOrder));
        StringBuilder stringBuilder = new StringBuilder();
        for (Flat flat: entity.getVaFlats())
            stringBuilder.append(stringBuilder.length() == 0 ? "" : ", ").append(flat.getFlNumber());
        label.setValue(stringBuilder.toString());
        return label;
    }
    return null;
}

But unexpectedly I got a super-wide column instead of short link. I had to implement a workaround with PopupView component:

public Component generateFlatListCell(VisitAssignment entity) {
    if (entity != null && entity.getVaFlats() != null && entity.getVaFlats().size() > 0) {
        TextArea label = componentsFactory.createComponent(TextArea.class);
        entity.getVaFlats().sort(Comparator.comparing(Flat::getFlOrder));
        StringBuilder stringBuilder = new StringBuilder();
        for (Flat flat: entity.getVaFlats())
            stringBuilder.append(stringBuilder.length() == 0 ? "" : ", ").append(flat.getFlNumber());
        String text = stringBuilder.toString();
        label.setValue(text);
        label.setRows(7);
        label.setColumns(30);
        label.setEditable(false);
        PopupView popupView = componentsFactory.createComponent(PopupView.class);
        popupView.setMinimizedValue(text.substring(0, Math.min(30,text.length())) + (text.length() > 30 ? "..." : ""));
        popupView.setPopupContent(label);
        return popupView;
    }
    return null;
}

What did I wrong? Does the maxTextLength property work on “natural” columns only, not on generated?

#3

As far as I see from the source code, maxTextLength applied only if there are no generators for the column. You could use Formatter for column instead of generator and it should work.

#4

Formatter doesn’t work too, no differences.
The column:

<column id="vaFlats" sortable="false" maxTextLength="30">
    <formatter class="com.company.project.gui.components.formatters.FlatListFormatter"/>
</column>

and formatter class:

public class FlatListFormatter implements Formatter<List<Flat>> {
    @Override
    public String format(List<Flat> flatList) {
        if (flatList != null && flatList.size() > 0) {
            flatList.sort(Comparator.comparing(Flat::getFlOrder));
            StringBuilder stringBuilder = new StringBuilder();
            for (Flat flat : flatList)
                stringBuilder.append(stringBuilder.length() == 0 ? "" : ", ").append(flat.getFlNumber());
            return stringBuilder.toString();
        }
        return null;
    }
}

Call of table.getColumn("vaFlats").setMaxTextLength(30) in init method of the form class didn’t help.
The only solution with PopupView will remain. Thanks.

#5

Try to set (narrow) width for component (label) created in column generator.

#6

That’s the effect:

image

Left cell - generated label with width=200, right - text using formatter.