How to use onKeyPressed in JavaFX scene builder? - javafx

Question

I'm new to JavaFX scene builder, and I developed text editor by using it, but at last, I got a problem, where I want to call a function when I pressed a combination of keys e.g, suppose I press CTRL+S, then it must call a function from my controller.java.
[Here is my javaScene builder pic][1]
Main.java
package sample;
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.input.KeyEvent;
import javafx.stage.Stage;
public class Main extends Application {
#Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
primaryStage.setTitle("Hello World");
Scene scene = new Scene(root, 300, 275);
primaryStage.setScene(scene);
scene.getStylesheets().add("style.css");
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
**
Controller.java
package sample;
import java.awt.*;
import java.io.*;
import java.net.URL;
import java.sql.SQLOutput;
import java.util.ResourceBundle;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.control.TextArea;
import javafx.scene.input.KeyEvent;
import javafx.stage.FileChooser;
import javafx.event.EventHandler;
import javafx.scene.input.KeyEvent;
import javax.xml.soap.Text;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.scene.input.KeyEvent;
import javafx.stage.Stage;
import javafx.scene.input.KeyCode;
public class Controller implements EventHandler <KeyEvent> {
boolean doesFileHasName=false;
File selectedFile1;
File selectedFile;
FileChooser fileChooser = new FileChooser();
#FXML
private ResourceBundle resources;
#FXML
private URL location;
#FXML
private TextArea TextArea;
#FXML
private MenuBar MenuBar;
#FXML
private MenuItem createFile;
#FXML
private Text fileName;
#FXML
private javafx.scene.text.Text text;
#Override
public void handle(KeyEvent keyEvent)
{
}
#FXML
public void onKeyPressed(KeyEvent keyEvent) {
if (keyEvent.isControlDown() && keyEvent.getCode() == KeyCode.C) {
System.out.println("Control Down: " + keyEvent.isControlDown() + " " + keyEvent.getCode() + " was pressed!");
}
if (keyEvent.isAltDown() && keyEvent.getCode() == KeyCode.C) {
System.out.println("Alt Down: " + keyEvent.isAltDown() + " " + keyEvent.getCode() + " was pressed!");
}
}
#FXML
void editSaveAs()
{
FileChooser.ExtensionFilter extFilter = new FileChooser.ExtensionFilter("Java files (*.java)", "*.java");
/* new FileChooser.ExtensionFilter("TXT files (*.txt)", "*.txt");*/
fileChooser.getExtensionFilters().add(extFilter);
selectedFile = fileChooser.showSaveDialog(null);
if(selectedFile != null){
SaveFile(TextArea.getText(), selectedFile);
text.setText(selectedFile.getName());
doesFileHasName=true;
}
}
#FXML
void editNew()
{
try {
FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("new.fxml"));
Parent root1 = (Parent) fxmlLoader.load();
Stage stage = new Stage();
stage.setTitle("Untitled");
stage.setScene(new Scene(root1));
stage.show();
}catch (Exception e){
System.out.println("Can't open a new window");
}
}
String[] storeButton = new String[2];
#FXML
void editOpen()
{
selectedFile1 = fileChooser.showOpenDialog(null);
if (selectedFile1!=null)
{
text.setText(selectedFile1.getName());
doesFileHasName = true;
try{
FileReader fileReader = new FileReader(selectedFile1);
BufferedReader bufferedReader = new BufferedReader(fileReader);
String s ;
String f="" ;
while((s=bufferedReader.readLine())!=null)
{
f=f+s+"\n";
}
TextArea.setText(f);
bufferedReader.close();
}catch(Exception error)
{
System.out.println("hello world!!!");
}
}
}
#FXML
void Save() {
if (doesFileHasName == false) {
editSaveAs();
//System.out.println(selectedFile.getName());
} else {
if (doesFileHasName == true) {
try {
if(selectedFile!= null && text.getText().equals( selectedFile.getName())) {
SaveFile(TextArea.getText(), selectedFile);
System.out.println("selectFile block is done");
}else
{
if(selectedFile1!=null && text.getText().equals(selectedFile1.getName())) {
SaveFile(TextArea.getText(), selectedFile1);
System.out.println("selectFile1 block is done");
}
}
}catch (Exception E) {
System.out.println(E);
}
}}
}
private void SaveFile(String content, File file){
try {
FileWriter fileWriter;
fileWriter = new FileWriter(file);
fileWriter.write(content);
fileWriter.close();
} catch (IOException ex) {
Logger.getLogger(Main.class
.getName()).log(Level.SEVERE, null, ex);
}
}
#FXML
void onKeyTyped()
{
TextArea.setStyle("-fx-font-size: 18");
if (doesFileHasName == true) {
try {
if(selectedFile!= null && text.getText().equals( selectedFile.getName())) {
SaveFile(TextArea.getText(), selectedFile);
//System.out.println("selectFile block is done");
}else
{
if(selectedFile1!=null && text.getText().equals(selectedFile1.getName())) {
SaveFile(TextArea.getText(), selectedFile1);
//System.out.println("selectFile1 block is done");
}
}
}catch (Exception E) {
System.out.println(E);
}
}
}
#FXML
void initialize() {
text.setText("Untitled");
assert TextArea != null : "fx:id=\"TextArea\" was not injected: check your FXML file 'textEditor.fxml'.";
assert MenuBar != null : "fx:id=\"MenuBar\" was not injected: check your FXML file 'textEditor.fxml'.";
}
}
**
sample.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Menu?>
<?import javafx.scene.control.MenuBar?>
<?import javafx.scene.control.MenuItem?>
<?import javafx.scene.control.ScrollBar?>
<?import javafx.scene.control.TextArea?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.text.Font?>
<?import javafx.scene.text.Text?>
<AnchorPane id="AnchorPane" onKeyPressed="#onKeyPressed" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="499.0" prefWidth="500.0" xmlns="http://javafx.com/javafx/8.0.121" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
<children>
<MenuBar fx:id="MenuBar" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<menus>
<Menu mnemonicParsing="false" text="File">
<items>
<MenuItem mnemonicParsing="false" onAction="#editNew" text="New " />
<MenuItem mnemonicParsing="false" onAction="#editOpen" text="Open " />
<MenuItem mnemonicParsing="false" onAction="#Save" text="Save " />
<MenuItem mnemonicParsing="false" onAction="#editSaveAs" text="Save As... " />
<MenuItem mnemonicParsing="false" text="Exit" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Edit">
<items>
<MenuItem mnemonicParsing="false" text="Undo (Ctrl+Z)" />
<MenuItem mnemonicParsing="false" text="Cut (Ctrl+X)" />
<MenuItem mnemonicParsing="false" text="Copy (Ctrl+C)" />
<MenuItem mnemonicParsing="false" text="Paste (Ctrl+V)" />
<MenuItem mnemonicParsing="false" text="Delete (Del)" />
<MenuItem mnemonicParsing="false" text="Find... (Ctrl+F)" />
<MenuItem mnemonicParsing="false" text="Replace... (Ctrl+H)" />
<MenuItem mnemonicParsing="false" text="Select All (Ctrl+A)" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Help">
<items>
<MenuItem mnemonicParsing="false" text="About" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Font Size">
<items>
<MenuItem mnemonicParsing="false" text="Unspecified Action">
<graphic>
<ScrollBar orientation="VERTICAL" />
</graphic>
</MenuItem>
</items>
</Menu>
</menus>
</MenuBar>
<TextArea fx:id="TextArea" layoutY="25.0" onKeyTyped="#onKeyTyped" prefHeight="474.0" prefWidth="500.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="51.0" />
<Text fx:id="text" layoutX="7.0" layoutY="48.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Text" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0">
<font>
<Font size="15.0" />
</font></Text>
</children>
</AnchorPane>
help will be appreciated...