Java Swing - Drop

 Java Swing - Drop

package jlib5.swing;

import jlib5.java.Runnable1;

import javax.swing.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.File;
import java.io.IOException;
import java.util.List;

public class Drop extends TransferHandler {
    Runnable1 handler;
    public Drop( Runnable1 handler ) {
        this.handler = handler;
    }
    @Override
    public boolean canImport(TransferSupport support) {
        for (DataFlavor flavor : support.getDataFlavors()) {
            if (flavor.isFlavorJavaFileListType()) {
                return true;
            }
        }
        return false;
    }
    @Override
    @SuppressWarnings("unchecked")
    public boolean importData(TransferSupport support) {
        if (!this.canImport(support))
            return false;
        List<File> files;
        try {
            files = (List<File>) support.getTransferable()
                    .getTransferData(DataFlavor.javaFileListFlavor);
        } catch (UnsupportedFlavorException | IOException ex) {
            return false;
        }
        /*
        for (File file: files) { }
        */
        if( handler != null ) {
            handler.run(files);
        }
        return true;
    }

    //myComponent.setTransferHandler(new FileDropHandler());
}