How do I properly handle file copy/cut & paste in javafx?

问题

I'm working on a program in which I want to add the possibility of copy-pasting (or cut-pasting) files. I could create it so it only works within the program, but it would be nicer if I could use the system-wide clipboard. That has one huge problem though: when pasting I don't know if files are copied or cut from the system explorer, I only get the file locations.

I am using Java and the javafx clipboard. Some sample code:

Clipboard clipboard = Clipboard.getSystemClipboard();
List<File> files = clipboard.getFiles();

// destDir is a File, the target directory.
for (File oldFile : files) {
    if (oldFile.isDirectory()) {
        FileUtils.copyDirectoryToDirectory(oldFile, destDir);
    } else {
        FileUtils.copyFileToDirectory(oldFile, destDir);
    }
}

Here I simply copy the files, but how do I for example know when to use FileUtils.copyDirectoryToDirectory and when to use FileUtils.moveDirectoryToDirectory (aka copy or cut)?

Thanks,
Luca

回答1:

Turns out, as pointed out by Fildor , that this is only possible when using drag and drop with the Dragboard. The Clipboard does not have such functionality.

来源：https://stackoverflow.com/questions/34133307/how-do-i-properly-handle-file-copy-cut-paste-in-javafx