Question

How to add clickHandler to a gwt checkbox, so that when the checkbox is checked, a listbox is shown and when it is unchecked, the listbox disappears?

Following is what I have so far. When I check the checkbox, the list appears, but when I uncheck it, the listbox does not disappear.

VerticalPanel vPanel = new VerticalPanel();
ListBox list = new listBox();
list.setVisible(false);
vPanel.add(list);
.....
.....
checkBox.addClickHandler(new ClickHandler() 
{
    public void onClick(ClickEvent event) 
    {
        boolean checked =((CheckBox) event.getSource()).isEnabled();
        if(checked==true)
        {
            list.addItem("a");
            list.addItem("b");
            list.addItem("c");
            list.setVisible(true);
        }
        else if(checked==false)
        {
            componentList.setVisible(false); 
        }
    }
});

Thanks so much in advance.

Answer 1

enabled != checked! (use isChecked or getValue)

Otherwise, go with Bhat’s code and advises.