CODEWITHSUNDEEP
javaswingactionlistener
Sakkeer Hussain
Sakkeer Hussain

Reputation: 459

How to determine whether JComboBox ActionListener is triggered from code or by user

How can I determine whether an ActionEvent fired by a JComboBox is caused by the user from the GUI, or is caused by calling comboBox.setSelectedItem("something") from code? Or from any other event?

Upvotes: 2

Views: 298

Answers (1)

Boann
Boann

Reputation: 50041

Use a boolean variable to keep track of when you are changing the value yourself:

private JComboBox<String> comboBox;
private boolean comboBoxChangedFromCode = false;

Set that variable while you change the value:

comboBoxChangedFromCode = true;
comboBox.setSelectedItem(...);
comboBoxChangedFromCode = false;

Check the value in your combo box's ActionListener:

public void actionPerformed(ActionEvent e) {
    if (comboBoxChangedFromCode) {
        ...
    } else {
        ...
    }
}

Upvotes: 1

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