JavaFX display text area appending - any way to highlight/make new text more visible?

Question

I have a display text area in my JavaFX app.

It has several methods for appending strings to it.

What I want is for any newly appended text to have some kind of feedback so the user is more visually aware of the new text being displayed.

Ideally what I would like is one of the following, but am very open to other suggestions:

• The appended text is 'typed out' as if someone were typing it into the display text area itself. Or..
• Some kind of highlighting of the new text as it appears.

Although again, I'm open to suggestions!

Thank you.

Answer 1

As suggested in Highlighting Strings in JavaFX TextArea , you can select the new text.

Assuming the text area is not editable, and you are only ever appending to the end of the existing text, you can do:

textArea.textProperty().addListener((obs, oldText, newText) -> {
    if (newText.length() > oldText.length()) {
        Platform.runLater(() ->
            textArea.selectRange(oldText.length(), newText.length()));
    }
});

If your text area is editable, or you are using it more generally, then you can do something similar each time you append text. For example:

String message = ... ;
textArea.positionCaret(textArea.getLength());
textArea.appendText(message);
textArea.extendSelection(textArea.getLength());

Answer 2

也许尝试使用RichTextArea（ https://github.com/TomasMikula/RichTextFX ），那么有很多可能以不同的方式显示文本。