Input

DispatchInput Done Finalize Init InputTime NowDone SetDone StartTime

Attributes

Class Input defines no new attributes.

Fields

// Input objects describe any kind of input; usually key strokes or screen touches
Define Class Input;
    abstract;
    inherits from Object;

    field startTime:        Unsigned;
    field stopTime:         Unsigned;

    // two ways to use an input; ask it to handle itself, or handle it and tell it you did
    operation DispatchInput(), noMethod;
        // call to ask input to handle itself
    operation NowDone();
        // call to say that you are finished with this Input (not needed if Done is returning true)

    // timing of inputs
    operation Done(): Boolean;
        // input is done, InputTime returns stop time
    operation StartTime(): Unsigned, noFail;
        // inputs are sorted by this
    operation InputTime(): Unsigned;
        // current time while input is not done; stop time once input is done

    // hook for subclasses
    operation SetDone(endTime: Unsigned);
        // called when input is done; override to forget unimportant stroke details

    overrides Init, Finalize;
end class;