src/ImageIterator.java - master - alex_ep0411/java_lab3

src/ImageIterator.java
89 строк2 KB
александр
лабораторная работа 3
08 июн 2026, 12:17
08 июн 2026, 12:173ce77bb
import javafx.scene.image.Image;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class ImageIterator {
    private List<File> images;
    private int currentPosition;

    public ImageIterator() {
        this.images = new ArrayList<>();
        this.currentPosition = 0;
    }

    public void loadImages(String folderPath) {
        File folder = new File(folderPath);
        images.clear();

        if (!folder.exists()) {
            folder.mkdir();
            return;
        }

        File[] files = folder.listFiles();
        if (files != null) {
            for (File file : files) {
                String name = file.getName().toLowerCase();
                if (name.endsWith(".jpg") || name.endsWith(".jpeg") ||
                        name.endsWith(".png") || name.endsWith(".gif")) {
                    images.add(file);
                }
            }
        }
        currentPosition = images.isEmpty() ? 0 : 0;
    }

    public Image getCurrentImage() {
        if (images.isEmpty()) return null;
        return new Image(images.get(currentPosition).toURI().toString());
    }

    public File getCurrentFile() {
        if (images.isEmpty()) return null;
        return images.get(currentPosition);
    }

    public void next() {
        if (images.isEmpty()) return;
        currentPosition++;
        if (currentPosition >= images.size()) {
            currentPosition = 0;
        }
    }

    public void previous() {
        if (images.isEmpty()) return;
        currentPosition--;
        if (currentPosition < 0) {
            currentPosition = images.size() - 1;
        }
    }

    public void first() {
        if (images.isEmpty()) return;
        currentPosition = 0;
    }

    public void last() {
        if (images.isEmpty()) return;
        currentPosition = images.size() - 1;
    }

    public int getCurrentIndex() {
        return currentPosition + 1;
    }

    public int getTotalCount() {
        return images.size();
    }

    public boolean isEmpty() {
        return images.isEmpty();
    }

    public void setImages(List<File> filteredImages) {
        this.images = filteredImages;
        this.currentPosition = 0;
    }
}