Element: NumberField.

Icon: 

Text: A text field to display and modify a value.

Description: A NumberField is a basic element that displays and allow editing a numeric value. The numeric value is displayed according to a given format (see "Format" property). The element invokes an action when the value displayed is modified.

When editing the displayed value, the change is only accepted when the Enter key is hit. To make this evident, the background of the field will change color while you type, displaying the original background color when the new value is accepted. If the value introduced is incorrect (that is, it cannot be sampled by the "Format" property), then the value is rejected and will be displayed in red.

Table of properties

Name Description Values accepted
Main
Variable The variable displayed and modified using this element. A variable of type double or int.
Value An initial value for the variable. Any constant or variable of type double or int.
Format The format for the visualization of the value. Any value acepted by the class java.text.DecimalFormat. See additional info. The default format is 0.000.
Editable Whether the value displayed can be modified or not. A boolean variable or one of the constants true or false.
Action The action to invoke when the value is modified. The Java code to invoke for the action. 
Graphical Aspect
Size The size of the element. An Object variable of the class java.awt.Dimension or the integer values for the width and the height, respectively, separated by a comma.
Background The color used for the background of the element. An Object variable of the class java.awt.Color or one of the predefined colors: black, blue, cyan, darkGray, gray, green, lightGray, magenta, orange, pink, red, white, yellow.

A color can also be specified providing its integer RGB coordinates (between 0 and 255), plus an optional transparency coordinate.

The default value is decided by the system.

Foreground The color used for the text displayed by the element. See the values for the Background property.
Font The font used for the text displayed by the element. An Object variable of the class java.awt.Font or a set of family, style and size, separated by commas. The style must be one of  plain, bold, italic, bold | italic. Example: Monospaced,italic,18.

The default value is decided by the system.

Tooltip The text displayed when the cursor lingers on top of the element. Any constant or variable of type String.