Is there a way to add a JLabel from a class to another CardLayout? - swing

Question

I'm doing a project for school and my goal here is to design a gallery on Swing. One of the features is the possibility to add new images to my gallery and display the new picture. I created a card where you can add your picture by browsing the file explorer on your computer and then it will copy and add the file to the folder of the app. For the moment this part works fine, but when I go back to my GalleryPage CardLayout the image is not displayed (because I don't know how to add it directly). What I'm trying to do is add this new image to the bottomPanel of my GalleryPage java class from newImg [JLabel] on my NewImage java class. Is there a way to do that? I've been browsing the Internet to find an answer but I can't find a solution.
Here is my code:
Gallery.java
public class Gallery extends JPanel {
private GalleryPage panelGalleryPage;
private NewImage newImage;
protected static CardLayout cardGal;
public Gallery() {
super();
setLayout(new CardLayout());
cardGal = (CardLayout) this.getLayout();
panelGalleryPage = new GalleryPage();
newImage = new NewImage();
add(panelGalleryPage, "GalleryPage");
add(newImage, "NewImage");
}
}
GalleryPage.java
public class GalleryPage extends JPanel {
// preparing my grid of images by sorting the filepath of each image.
File directory = new File("oop_2022/src/main/java/com/phone/common/png/Galery_images");
int fileCount = directory.list().length;
private JButton addImg, delImg;
private JLabel title;
private JLabel[] cache = new JLabel[fileCount];
private ImageIcon[] imgGrid = new ImageIcon[fileCount];
private ImageIcon imgTitle, imgAdd, imgDel;
private JSplitPane splitPanel;
private JPanel bottomPanel, topPanel;
private List<String> results;
public GalleryPage() {
super();
setBackground(PowerOn.userInterface.DARK_GREY);
initComponents();
}
public void initComponents() {
// create a split pane
splitPanel = new JSplitPane();
topPanel = new JPanel(); // top component
bottomPanel = new JPanel(); // bottom component
// configure splitPanel
splitPanel.setOrientation(JSplitPane.VERTICAL_SPLIT);
splitPanel.setDividerLocation(100);
splitPanel.setDividerSize(0);
splitPanel.setTopComponent(topPanel);
splitPanel.setBottomComponent(bottomPanel);
// create title
imgTitle = new ImageIcon("oop_2022/src/main/java/com/phone/common/png/images.png");
imgTitle.setImage(imgTitle.getImage().getScaledInstance(80, 80, Image.SCALE_DEFAULT));
title = new JLabel(imgTitle);
// create add Button
imgAdd = new ImageIcon("oop_2022/src/main/java/com/phone/common/png/add.png");
imgAdd.setImage(imgAdd.getImage().getScaledInstance(40, 40, Image.SCALE_DEFAULT));
addImg = new JButton(imgAdd);
addImg.setPreferredSize(new Dimension(60, 40));
// add Actionlisteneer to addImg Button
addImg.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
Gallery.cardGal.show(PowerOn.gallery, "NewImage");
}
});
// create delete Button
imgDel = new ImageIcon("oop_2022/src/main/java/com/phone/common/png/trash.png");
imgDel.setImage(imgDel.getImage().getScaledInstance(40, 40, Image.SCALE_DEFAULT));
delImg = new JButton(imgDel);
delImg.setPreferredSize(new Dimension(60, 40));
// Add title and buttons to the topPanel
topPanel.add(title);
topPanel.add(addImg);
topPanel.add(delImg);
// add the splitPanel to the frame
this.add(splitPanel);
// set top and bottom panel Background
topPanel.setBackground(PowerOn.userInterface.DARK_GREY);
bottomPanel.setBackground(PowerOn.userInterface.DARK_GREY);
// set a GridLayout for the bottomPanel
this.setLayout(new GridLayout());
GridLayout layout = new GridLayout(0, 3, 10, 10);
bottomPanel.setLayout(layout);
// creating an array of file
results = new ArrayList<String>();
File[] files = new File("oop_2022/src/main/java/com/phone/common/png/Galery_images").listFiles();
// retrieving the name of each images
for (File file : files) {
if (file.isFile()) {
results.add(file.getName());
}
}
// create an array of images
for (int i = 0; i < fileCount; i++) {
imgGrid[i] = new ImageIcon(files[i].toString());
}
// loop to sale and add the images to the bottomPanel
for (int i = 0; i < files.length; i++) {
// scaling the images
imgGrid[i].setImage(imgGrid[i].getImage().getScaledInstance(120, 120,
Image.SCALE_SMOOTH));
// add the images to the grid
cache[i] = new JLabel(imgGrid[i]);
bottomPanel.add(cache[i]);
}
}
}
NewImage.java
public class NewImage extends JPanel {
private JLabel title, newImg;
private ImageIcon cacheImg;
private JPanel display;
private JButton choose, back;
private JFileChooser file;
private File selectedFile;
private Gallery addNew;
public NewImage() {
super();
setBackground(PowerOn.userInterface.DARK_GREY);
initComponents();
}
public void initComponents() {
// configure title JLabel
title = new JLabel("Choose a new image to add (jpg or png only)");
title.setHorizontalAlignment(title.CENTER);
// configurin choose JButton + Actionlistener
choose = new JButton("Explore");
file = new JFileChooser();
choose.setPreferredSize(new Dimension(60, 60));
choose.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
int result = file.showOpenDialog(display);
if (result == JFileChooser.APPROVE_OPTION) {
selectedFile = file.getSelectedFile();
// check the type of the file only jpg and png accepted
String check = selectedFile.getAbsolutePath()
.substring(selectedFile.getAbsolutePath().length() - 3);
System.out.println(check);
// if the fil is ok add the file to the gallery directory
if (check.equals("png") || check.equals("jpg")) {
// retrieving the name of the file and copy on the galery folder
try {
String[] parts = selectedFile.getAbsolutePath().split(Pattern.quote(File.separator));
String dest = "oop_2022/src/main/java/com/phone/common/png/Galery_images/"
+ parts[parts.length - 1];
copyFile(selectedFile, new File(dest));
cacheImg = new ImageIcon(dest);
cacheImg.setImage(cacheImg.getImage().getScaledInstance(120, 120, Image.SCALE_DEFAULT));
newImg = new JLabel(cacheImg);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
JOptionPane.showMessageDialog(null, "Your image as been succesfully uploaded");
}
// if the file is not a png or a jpg display an error message
else {
JOptionPane.showMessageDialog(null, "You must choose a png or jpg file");
}
}
}
});
// configuring back JButton + Actionlistener
back = new JButton("Return to home page");
back.setPreferredSize(new Dimension(60, 60));
back.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
Gallery.cardGal.show(PowerOn.gallery, "GalleryPage");
}
});
// configure layout of panel
this.setLayout(new GridLayout());
// add panels
display = new JPanel();
display.setLayout(new GridLayout(0, 1));
this.add(display);
display.add(title);
display.add(choose);
display.add(back);
}
public static void copyFile(File from, File to) throws IOException {
Files.copy(from.toPath(), new FileOutputStream(to));
}
}
What I want is that the image I added is directly displayed without running the code again when I go back to my gallery page.
my gallery page