public BaseExternalAnnotationsManager(final PsiManager psiManager) {
myPsiManager = psiManager;
LowMemoryWatcher.register(
new Runnable() {
@Override
public void run() {
dropCache();
}
},
psiManager.getProject());
}
@Override
@Nullable
public List<PsiFile> findExternalAnnotationsFiles(@NotNull PsiModifierListOwner listOwner) {
final PsiFile containingFile = listOwner.getContainingFile();
if (!(containingFile instanceof PsiJavaFile)) {
return null;
}
final PsiJavaFile javaFile = (PsiJavaFile) containingFile;
final String packageName = javaFile.getPackageName();
final VirtualFile virtualFile = containingFile.getVirtualFile();
if (virtualFile == null) return null;
final List<PsiFile> files = myExternalAnnotations.get(virtualFile);
if (files == NULL_LIST) return null;
if (files != null) {
boolean allValid = true;
for (PsiFile file : files) {
allValid &= file.isValid();
}
if (allValid) {
return files;
}
}
if (virtualFile == null) {
return null;
}
Set<PsiFile> possibleAnnotationsXmls = new THashSet<PsiFile>();
for (VirtualFile root : getExternalAnnotationsRoots(virtualFile)) {
final VirtualFile ext =
root.findFileByRelativePath(packageName.replace('.', '/') + "/" + ANNOTATIONS_XML);
if (ext == null) continue;
final PsiFile psiFile = myPsiManager.findFile(ext);
if (psiFile == null) continue;
possibleAnnotationsXmls.add(psiFile);
}
List<PsiFile> result;
if (possibleAnnotationsXmls.isEmpty()) {
myExternalAnnotations.put(virtualFile, NULL_LIST);
result = null;
} else {
result = new SmartList<PsiFile>(possibleAnnotationsXmls);
// sorting by writability: writable go first
Collections.sort(
result,
new Comparator<PsiFile>() {
@Override
public int compare(PsiFile f1, PsiFile f2) {
boolean w1 = f1.isWritable();
boolean w2 = f2.isWritable();
if (w1 == w2) {
return 0;
}
return w1 ? -1 : 1;
}
});
myExternalAnnotations.put(virtualFile, result);
}
return result;
}