Java – Textarea javaFx Color

javajavafxtextarea

I'm trying to develop an app that looks like a terminal console, am using a TextArea for that and my wish is to habe a black background and green text,

The point I want to do this without using any ccs template

I know that my question can look like a duplicated in here:

javafx textarea background color not css

JavaFX CSS styling of TextArea does not work

but after reading those and trying what they suggested I found no luck to solve my issue

What I tried so far (Unsuccessfully):

in the FXML:

<TextArea 
    fx:id="terminalTextArea"
    layoutX="14.0"
    layoutY="85.0"
    prefHeight="64.0"
    prefWidth="402.0"
    style="-fx-font-family: Consolas; -fx-highlight-fill: #00ff00; -fx-highlight-text-fill: #000000; -fx-text-fill: #00ff00; -fx-background-color:#000000;"
    text="Terminal"
    AnchorPane.leftAnchor="10.0"
    AnchorPane.rightAnchor="10.0">
    <font>
        <Font name="System Bold" size="14.0" />
    </font>
</TextArea>

and in the source-code:

@Override
public void initialize(URL url, ResourceBundle rb) {
    System.out.println("init here");
    terminalTextArea.setStyle("-fx-text-fill: black;");
}

The only thing that I get is a bordered color like in the image below:

Best Answer

The recommended way is to use an external CSS file, as in the examples you linked.

If for some reason you don't want to do that, try

style="-fx-control-inner-background:#000000; -fx-font-family: Consolas; -fx-highlight-fill: #00ff00; -fx-highlight-text-fill: #000000; -fx-text-fill: #00ff00; "

in your FXML file, or equivalently

terminalTextArea.setStyle("-fx-control-inner-background:#000000; -fx-font-family: Consolas; -fx-highlight-fill: #00ff00; -fx-highlight-text-fill: #000000; -fx-text-fill: #00ff00; ");

in your controller's initialize() method.

SSCCE:

StyledTextArea.fxml:

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.layout.HBox?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.TextArea?>
<?import javafx.scene.text.Font?>

<HBox xmlns:fx="http://javafx.com/fxml/1" >
    <padding>
        <Insets top="12" left="12" right="12" bottom="12"/>
    </padding>
    <TextArea 
        prefHeight="64.0"
        prefWidth="402.0"
        style="-fx-control-inner-background:#000000; -fx-font-family: Consolas; -fx-highlight-fill: #00ff00; -fx-highlight-text-fill: #000000; -fx-text-fill: #00ff00; "
        text="Terminal">

        <font>
            <Font name="System Bold" size="14.0" />
        </font>
    </TextArea>
</HBox>

and a test class:

import java.io.IOException;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class StyledTextArea extends Application {

    @Override
    public void start(Stage primaryStage) throws IOException {
        primaryStage.setScene(new Scene(
            FXMLLoader.load(getClass().getResource("StyledTextArea.fxml"))
        ));
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

A COMPLETE YET SIMPLE SOLUTION

Updated 2020-05-14 (Improved browser support for mobiles and tablets)

The following code will work:

On key input.
With pasted text (right click & ctrl+v).
With cut text (right click & ctrl+x).
With pre-loaded text.
With all textarea's (multiline textbox's) site wide.
With Firefox (v31-67 tested).
With Chrome (v37-74 tested).
With IE (v9-v11 tested).
With Edge (v14-v18 tested).
With IOS Safari.
With Android Browser.
With JavaScript strict mode.
Is w3c validated.
And is streamlined and efficient.

OPTION 1 (With jQuery)

This option requires jQuery and has been tested and is working with 1.7.2 - 3.6

Simple (Add this jquery code to your master script file and forget about it.)

$("textarea").each(function () {
  this.setAttribute("style", "height:" + (this.scrollHeight) + "px;overflow-y:hidden;");
}).on("input", function () {
  this.style.height = "auto";
  this.style.height = (this.scrollHeight) + "px";
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<textarea placeholder="Type, paste, cut text here...">PRELOADED TEXT.
This javascript should now add better support for IOS browsers and Android browsers.</textarea>
<textarea placeholder="Type, paste, cut text here..."></textarea>

Test on jsfiddle

OPTION 2 (Pure JavaScript)

Simple (Add this JavaScript to your master script file and forget about it.)

const tx = document.getElementsByTagName("textarea");
for (let i = 0; i < tx.length; i++) {
  tx[i].setAttribute("style", "height:" + (tx[i].scrollHeight) + "px;overflow-y:hidden;");
  tx[i].addEventListener("input", OnInput, false);
}

function OnInput() {
  this.style.height = "auto";
  this.style.height = (this.scrollHeight) + "px";
}

<textarea placeholder="Type, paste, cut text here...">PRELOADED TEXT. This JavaScript should now add better support for IOS browsers and Android browsers.</textarea>
<textarea placeholder="Type, paste, cut text here..."></textarea>

Test on jsfiddle

OPTION 3 (jQuery Extension)

Useful if you want to apply further chaining to the textareas you want to be auto-sized.

jQuery.fn.extend({
  autoHeight: function () {
    function autoHeight_(element) {
      return jQuery(element)
        .css({ "height": "auto", "overflow-y": "hidden" })
        .height(element.scrollHeight);
    }
    return this.each(function() {
      autoHeight_(this).on("input", function() {
        autoHeight_(this);
      });
    });
  }
});

Invoke with $("textarea").autoHeight()

UPDATING TEXTAREA VIA JAVASCRIPT

When injecting content into a textarea via JavaScript append the following code to invoke the function in option 1.

$("textarea").trigger("input");

PRESET TEXTAREA HEIGHT

To fix the initial height of the textarea you will need to add an additional condition:

const txHeight = 16;
const tx = document.getElementsByTagName("textarea");
for (let i = 0; i < tx.length; i++) {
  if (tx[i].value == '') {
    tx[i].setAttribute("style", "height:" + txHeight + "px;overflow-y:hidden;");
  } else {
    tx[i].setAttribute("style", "height:" + (tx[i].scrollHeight) + "px;overflow-y:hidden;");
  }
  tx[i].addEventListener("input", OnInput, false);
}

function OnInput(e) {
  this.style.height = "auto";
  this.style.height = (this.scrollHeight) + "px";
}

<textarea placeholder="Type, paste, cut text here...">PRELOADED TEXT. This JavaScript should now add better support for IOS browsers and Android browsers.</textarea>
<textarea placeholder="Type, paste, cut text here..."></textarea>

Best Answer

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