Combobox Suffers me

Flow
1

In my web application i want to add some features like…

1.Combobox will enabled when i select a pre-targeted value on another multiselect combobox(Combobox will disable first).
2.I have a enum class and set this data in two different combobox.If i select one data then it will no longer available for another combobox.

Any expert here or anyone who can give me some idea?

2

Hi!

Does something like this work for you:

enum MyEnum {
    FOO, BAR, BAZ
};

public MainView() {
    ComboBox<MyEnum> comboBox1 = new ComboBox<>();
    comboBox1.setItems(MyEnum.values());

    ComboBox<MyEnum> comboBox2 = new ComboBox<>();
    comboBox2.setEnabled(false);

    comboBox1.addValueChangeListener(e -> {
        if (e.getValue() == null) {
            comboBox2.setValue(null);
            comboBox2.setEnabled(false);
        } else {
            comboBox2.setItems(Arrays.stream(MyEnum.values())
                    .filter(value -> value != e.getValue()));
            comboBox2.setEnabled(true);
        }
    });

    add(comboBox1, comboBox2);
}
3

Pekka Maanpää:
Hi!

Does something like this work for you:

enum MyEnum {
    FOO, BAR, BAZ
};

public MainView() {
    ComboBox<MyEnum> comboBox1 = new ComboBox<>();
    comboBox1.setItems(MyEnum.values());

    ComboBox<MyEnum> comboBox2 = new ComboBox<>();
    comboBox2.setEnabled(false);

    comboBox1.addValueChangeListener(e -> {
        if (e.getValue() == null) {
            comboBox2.setValue(null);
            comboBox2.setEnabled(false);
        } else {
            comboBox2.setItems(Arrays.stream(MyEnum.values())
                    .filter(value -> value != e.getValue()));
            comboBox2.setEnabled(true);
        }
    });

    add(comboBox1, comboBox2);
}

Thanks expert.
Can you tell me how can i do it for List?

4

Not much difference, just get a Stream out of the list instead of the enum:

comboBox2.setItems(list.stream()
  .filter(value -> value != e.getValue()));
5

This is happening. can you please help me out?

17600297.png
17600300.png

6

Disabled components should ignore any updates from the client-side. If everything works fine, you don’t have to worry about those message logs.