/**
* @param elementToCopy PsiFile or PsiDirectory
* @param newName can be not null only if elements.length == 1
* @param choice a horrible way to pass/keep user preference
* @return first copied PsiFile (recursively); null if no PsiFiles copied
*/
@Nullable
public static PsiFile copyToDirectory(
@NotNull PsiFileSystemItem elementToCopy,
@Nullable String newName,
@NotNull PsiDirectory targetDirectory,
@Nullable int[] choice)
throws IncorrectOperationException, IOException {
if (elementToCopy instanceof PsiFile) {
PsiFile file = (PsiFile) elementToCopy;
String name = newName == null ? file.getName() : newName;
if (checkFileExist(targetDirectory, choice, file, name, "Copy")) return null;
return targetDirectory.copyFileFrom(name, file);
} else if (elementToCopy instanceof PsiDirectory) {
PsiDirectory directory = (PsiDirectory) elementToCopy;
if (directory.equals(targetDirectory)) {
return null;
}
if (newName == null) newName = directory.getName();
final PsiDirectory existing = targetDirectory.findSubdirectory(newName);
final PsiDirectory subdirectory =
existing == null ? targetDirectory.createSubdirectory(newName) : existing;
EncodingRegistry.doActionAndRestoreEncoding(
directory.getVirtualFile(),
new ThrowableComputable<VirtualFile, IOException>() {
@Override
public VirtualFile compute() {
return subdirectory.getVirtualFile();
}
});
PsiFile firstFile = null;
PsiElement[] children = directory.getChildren();
for (PsiElement child : children) {
PsiFileSystemItem item = (PsiFileSystemItem) child;
PsiFile f = copyToDirectory(item, item.getName(), subdirectory, choice);
if (firstFile == null) {
firstFile = f;
}
}
return firstFile;
} else {
throw new IllegalArgumentException("unexpected elementToCopy: " + elementToCopy);
}
}
@Override
public String getElementText(PsiFileSystemItem element) {
return element.getName();
}