将监听器添加到Vaadin的列表可编辑模式中的所有单元格

Question

我想添加监听器来改变“。”在可编辑模式下，在vaadin的一个列表中的“，”。 我用BeanItemContainer创建表数据。

Answer 1

一种选择是使用自定义TableFieldFactory然后将侦听器添加到需要它的每个字段。

https://vaadin.com/book/-/page/components.table.html

table.setTableFieldFactory(new MyTableFieldFactory());

...

public class MyTableFieldFactory extends DefaultFieldFactory {

    @Override
    public Field createField(Container container, Object itemId,
            Object propertyId, Component uiContext) {
        String prop = (String) propertyId;
        if ("a".equals(prop)) { // propertyId of the column you wish to change
            AbstractField f = (AbstractField) super.createField(container, itemId, propertyId, uiContext); // casting to AbstractField to set the field to immediate mode
            f.setImmediate(true);
            f.addValueChangeListener(new Property.ValueChangeListener() {
                @Override
                public void valueChange(ValueChangeEvent event) {
                    String val = (String) event.getProperty().getValue();
                    val = val.replace(".", ",");
                    event.getProperty().setValue(val);
                }
            });
            return f;
        }
        return super.createField(container, itemId, propertyId, uiContext);
    }
}