JAVAFX UI CONTROLS AND MULTIMEDIA - Introduction to Java Programming: Comprehensive Version - page 642

TextArea provides scrolling, but often it is useful to create a ScrollPane object to hold an
instance of TextArea and let ScrollPane handle scrolling for TextArea , as follows:

// Create a scroll pane to hold text area
ScrollPane scrollPane = new ScrollPane(taNote);

Tip
You can place any node in a ScrollPane . ScrollPane provides vertical and
horizontal scrolling automatically if the control is too large to fit in the viewing area.

ScrollPane

We now give a program that displays an image and a short text in a label, and a long text
in a text area, as shown in Figure 16.14.

DescriptionPane

A label
showing an
image and a
text

A text area
inside a
scroll pane

F IGURE 16.14

The program displays an image in a label, a title in a label, and text in the text area.

Here are the major steps in the program:

1. Define a class named DescriptionPane that extends BorderPane , as shown
in Listing 16.6. This class contains a text area inside a scroll pane, and a label for
displaying an image icon and a title. The class DescriptionPane will be reused in
later examples.

2. Define a class named TextAreaDemo that extends Application , as shown in
Listing 16.7. Create an instance of DescriptionPane and add it to the scene. The rela-
tionship between DescriptionPane and TextAreaDemo is shown in Figure 16.15.

javafx.scene.layout.BorderPane

javafx.application.Application

1 1

DescriptionPane

TextAreaDemo

-lblImageTitle: Label
-taDescription: TextArea

+setImageView(im: ImageView)
+setDescription(text: String)

F IGURE 16.15

TextAreaDemo uses DescriptionPane to display an image, title, and text
description of a national flag.

L ISTING 16.6

DescriptionPane.java
1 import javafx.geometry.Insets;
2 import javafx.scene.control.Label;
3 import javafx.scene.control.ContentDisplay;