Vaadin UI code snippets

picture_as_pdf

If you want to show a checkbox in the table header of a v7 Table:

use following code:

book.getRowDefinition().getColumnDefinition("CHECK").setSortable(false)
book.getRowDefinition().getColumnDefinition("CHECK")
    .setLabel("<input type='checkbox' id='checkboxSelectAll' onclick=\"selectAllListener(this.checked)\" " +
              "style=\"position:absolute;top: 2px;\"/>");

and to receive events from the checkbox:

JavaScript.getCurrent().addFunction("selectAllListener", new JavaScriptFunction() 
{
    public void call(JsonArray arguments) 
    {
        System.out.println("Pressed!");
    }
});

If you want to show a checkbox in the header of a Grid:

use following code:

CheckBox cbx = new CheckBox();
cbx.addValueChangeListener(new ValueChangeListener<Boolean>()
{
    @Override
    public void valueChange(ValueChangeEvent<Boolean> event)
    {
        System.out.println("Pressed!");
    }
});
 
UIFactoryManager.getFactory().invokeLater(() ->
{
    // Cast the resource to a Grid.
    ((Grid)((VaadinGrid)navLoggings.getUIResource()).getResource())
        // Get the first (automatically added) row.
        .getHeaderRow(0)
        // Get the cell for the column we want.
        .getCell("CHECK")
        // Add the component.
        .setComponent(cbx);
});