SectionArticleDataset.java

public void add(Article article) {
  sortedList.beginBatchedUpdates();
  sortedList.add(SectionArticle.createCategory(article));
  sortedList.add(SectionArticle.createArticle(article));
  sortedList.endBatchedUpdates();
}

public void remove(Article article) {
  SectionArticle sectionArticle = SectionArticle.createArticle(article);
  sortedList.beginBatchedUpdates();
  sortedList.remove(sectionArticle);
  int categoryCount = 0;
  for (int i = 0; i < sortedList.size(); i++) {
    SectionArticle sectionArticleTemp = itemAt(i);
    if (sectionArticleTemp.isArticle() && sectionArticleTemp.article()
        .category()
        .equalsIgnoreCase(article.category())) {
      categoryCount++;
    }
  }
  if (categoryCount < 1) {
    sortedList.remove(SectionArticle.createCategory(sectionArticle.article()));
  }
  sortedList.endBatchedUpdates();
}