DeviceContentProvider.java 文件源码

@Override
public void setChildren(final FileEntry entry, FileEntry[] children) {
    final Tree t = mViewer.getTree();
    if (t != null && t.isDisposed() == false) {
        Display display = t.getDisplay();
        if (display.isDisposed() == false) {
            display.asyncExec(new Runnable() {
                @Override
                public void run() {
                    if (t.isDisposed() == false) {
                        // refresh the entry.
                        mViewer.refresh(entry);

                        // force it open, since on linux and windows
                        // when getChildren() returns null, the node is
                        // not considered expanded.
                        mViewer.setExpandedState(entry, true);
                    }
                }
            });
        }
    }
}