Module java.base

Class ChoiceCallback

    • Constructor Detail

      • ChoiceCallback

        public ChoiceCallback​(String prompt,
                              String[] choices,
                              int defaultChoice,
                              boolean multipleSelectionsAllowed)
        Construct a ChoiceCallback with a prompt, a list of choices, a default choice, and a boolean specifying whether or not multiple selections from the list of choices are allowed.
        Parameters:
        prompt - the prompt used to describe the list of choices.
        choices - the list of choices.
        defaultChoice - the choice to be used as the default choice when the list of choices are displayed. This value is represented as an index into the choices array.
        multipleSelectionsAllowed - boolean specifying whether or not multiple selections can be made from the list of choices.
        Throws:
        IllegalArgumentException - if prompt is null, if prompt has a length of 0, if choices is null, if choices has a length of 0, if any element from choices is null, if any element from choices has a length of 0 or if defaultChoice does not fall within the array boundaries of choices.
    • Method Detail

      • getPrompt

        public String getPrompt()
        Get the prompt.
        Returns:
        the prompt.
      • getChoices

        public String[] getChoices()
        Get the list of choices.
        Returns:
        the list of choices.
      • getDefaultChoice

        public int getDefaultChoice()
        Get the defaultChoice.
        Returns:
        the defaultChoice, represented as an index into the choices list.
      • allowMultipleSelections

        public boolean allowMultipleSelections()
        Get the boolean determining whether multiple selections from the choices list are allowed.
        Returns:
        whether multiple selections are allowed.
      • setSelectedIndex

        public void setSelectedIndex​(int selection)
        Set the selected choice.
        Parameters:
        selection - the selection represented as an index into the choices list.
        See Also:
        getSelectedIndexes()
      • setSelectedIndexes

        public void setSelectedIndexes​(int[] selections)
        Set the selected choices.
        Parameters:
        selections - the selections represented as indexes into the choices list.
        Throws:
        UnsupportedOperationException - if multiple selections are not allowed, as determined by allowMultipleSelections.
        See Also:
        getSelectedIndexes()
      • getSelectedIndexes

        public int[] getSelectedIndexes()
        Get the selected choices.
        Returns:
        the selected choices, represented as indexes into the choices list.
        See Also:
        setSelectedIndexes(int[])