public boolean isLibraryClassFile(@NotNull VirtualFile file) {
if (file.isDirectory()) return false;
if (myFileTypeRegistry.isFileIgnored(file)) return false;
VirtualFile parent = file.getParent();
DirectoryInfo parentInfo = getInfoForDirectory(parent);
return parentInfo != null && parentInfo.libraryClassRoot != null;
}
public boolean isIgnored(@NotNull VirtualFile file) {
if (myFileTypeRegistry.isFileIgnored(file)) return true;
if (myFileExclusionManager != null && myFileExclusionManager.isExcluded(file)) return true;
VirtualFile dir = file.isDirectory() ? file : file.getParent();
if (dir == null) return false;
DirectoryInfo info = getInfoForDirectory(dir);
if (info != null) return false;
if (myDirectoryIndex.isProjectExcludeRoot(dir)) return true;
VirtualFile parent = dir.getParent();
while (true) {
if (parent == null) return false;
DirectoryInfo parentInfo = getInfoForDirectory(parent);
if (parentInfo != null) return true;
if (myDirectoryIndex.isProjectExcludeRoot(parent)) return true;
parent = parent.getParent();
}
}
public boolean isContentSourceFile(@NotNull VirtualFile file) {
return !file.isDirectory()
&& !myFileTypeRegistry.isFileIgnored(file)
&& isInSourceContent(file);
}