@Nullable
public PsiElement[] getElements(boolean[] isCopied) {
try {
Transferable content = myCopyPasteManager.getContents();
if (content == null) {
return null;
}
Object transferData;
try {
transferData = content.getTransferData(ourDataFlavor);
} catch (UnsupportedFlavorException e) {
return null;
} catch (IOException e) {
return null;
}
if (!(transferData instanceof MyData)) {
return null;
}
MyData dataProxy = (MyData) transferData;
if (!Comparing.equal(dataProxy, myRecentData)) {
return null;
}
if (isCopied != null) {
isCopied[0] = myRecentData.isCopied();
}
return myRecentData.getElements();
} catch (Exception e) {
if (LOG.isDebugEnabled()) {
LOG.debug(e);
}
return null;
}
}
@Nullable
private List<File> getDataAsFileList() {
final AccessToken token = ApplicationManager.getApplication().acquireReadActionLock();
try {
return asFileList(myDataProxy.getElements());
} finally {
token.finish();
}
}
public boolean isCutElement(Object element) {
if (myRecentData == null) return false;
if (myRecentData.isCopied()) return false;
PsiElement[] elements = myRecentData.getElements();
if (elements == null) return false;
for (PsiElement aElement : elements) {
if (aElement == element) return true;
}
return false;
}
public Object getTransferData(DataFlavor flavor)
throws UnsupportedFlavorException, IOException {
if (ourDataFlavor.equals(flavor)) {
return myDataProxy;
}
if (DataFlavor.stringFlavor.equals(flavor)) {
return getDataAsText();
}
if (DataFlavor.javaFileListFlavor.equals(flavor)) {
return asFileList(myDataProxy.getElements());
}
return null;
}
@Nullable
private String getDataAsText() {
List<String> names = new ArrayList<String>();
for (PsiElement element : myDataProxy.getElements()) {
if (element instanceof PsiNamedElement) {
String name = ((PsiNamedElement) element).getName();
if (name != null) {
names.add(name);
}
}
}
if (names.isEmpty()) {
return null;
}
return StringUtil.join(names, "\n");
}
@Nullable
private String getDataAsText() {
final AccessToken token = ApplicationManager.getApplication().acquireReadActionLock();
try {
final List<String> names = new ArrayList<String>();
for (PsiElement element : myDataProxy.getElements()) {
if (element instanceof PsiNamedElement) {
String name = ((PsiNamedElement) element).getName();
if (name != null) {
names.add(name);
}
}
}
return names.isEmpty() ? null : StringUtil.join(names, "\n");
} finally {
token.finish();
}
}
public PsiElement[] getElements() {
return myDataProxy.getElements();
}
