private void clearOldSelections() {
   for (MonthCellDescriptor selectedCell : selectedCells) {
     // De-select the currently-selected cell.
     selectedCell.setSelected(false);
   }
   selectedCells.clear();
   selectedCals.clear();
 }
 void showSearchResultsTab(LinkedList<Bookmark> results) {
   if (mySearchResultsView == null) {
     mySearchResultsView = createTab("searchResults", R.id.search_results);
     new BookmarksAdapter(mySearchResultsView, mySearchResults, false);
   } else {
     mySearchResults.clear();
   }
   mySearchResults.addAll(results);
   mySearchResultsView.invalidateViews();
   mySearchResultsView.requestLayout();
   getTabHost().setCurrentTabByTag("searchResults");
 }
  @Override
  protected void onStart() {
    super.onStart();

    myAllItems.clear();

    final Intent intent = getIntent();

    myAllItems.add(new SectionItem("enabled"));
    final List<String> enabledIds =
        intent.getStringArrayListExtra(NetworkLibraryActivity.ENABLED_CATALOG_IDS_KEY);
    if (enabledIds.size() > 0) {
      final TreeSet<CatalogItem> cItems = new TreeSet<CatalogItem>();
      for (String id : enabledIds) {
        final NetworkTree tree = NetworkLibrary.Instance().getCatalogTreeByUrlAll(id);
        if (tree != null && tree.getLink() != null) {
          cItems.add(new CatalogItem(id, true, tree));
        }
      }
      myAllItems.addAll(cItems);
      mySelectedItems.addAll(cItems);
    }

    myAllItems.add(new SectionItem("disabled"));
    final List<String> disabledIds =
        intent.getStringArrayListExtra(NetworkLibraryActivity.DISABLED_CATALOG_IDS_KEY);
    if (disabledIds.size() > 0) {
      final TreeSet<CatalogItem> cItems = new TreeSet<CatalogItem>();
      for (String id : disabledIds) {
        cItems.add(
            new CatalogItem(id, false, NetworkLibrary.Instance().getCatalogTreeByUrlAll(id)));
      }
      myAllItems.addAll(cItems);
    }

    setListAdapter(new CatalogsListAdapter());
  }
  /**
   * Both date parameters must be non-null and their {@link Date#getTime()} must not return 0. Time
   * of day will be ignored. For instance, if you pass in {@code minDate} as 11/16/2012 5:15pm and
   * {@code maxDate} as 11/16/2013 4:30am, 11/16/2012 will be the first selectable date and
   * 11/15/2013 will be the last selectable date ({@code maxDate} is exclusive).
   *
   * <p>This will implicitly set the {@link SelectionMode} to {@link SelectionMode#SINGLE}. If you
   * want a different selection mode, use {@link FluentInitializer#inMode(SelectionMode)} on the
   * {@link FluentInitializer} this method returns.
   *
   * <p>The calendar will be constructed using the given locale. This means that all names (months,
   * days) will be in the language of the locale and the weeks start with the day specified by the
   * locale.
   *
   * @param minDate Earliest selectable date, inclusive. Must be earlier than {@code maxDate}.
   * @param maxDate Latest selectable date, exclusive. Must be later than {@code minDate}.
   */
  public FluentInitializer init(Date minDate, Date maxDate, Locale locale) {
    if (minDate == null || maxDate == null) {
      throw new IllegalArgumentException(
          "minDate and maxDate must be non-null.  " + dbg(minDate, maxDate));
    }
    if (minDate.after(maxDate)) {
      throw new IllegalArgumentException(
          "minDate must be before maxDate.  " + dbg(minDate, maxDate));
    }
    if (minDate.getTime() == 0 || maxDate.getTime() == 0) {
      throw new IllegalArgumentException(
          "minDate and maxDate must be non-zero.  " + dbg(minDate, maxDate));
    }
    if (locale == null) {
      throw new IllegalArgumentException("Locale is null.");
    }

    // Make sure that all calendar instances use the same locale.
    this.locale = locale;
    today = Calendar.getInstance(locale);
    minCal = Calendar.getInstance(locale);
    maxCal = Calendar.getInstance(locale);
    monthCounter = Calendar.getInstance(locale);
    monthNameFormat =
        new SimpleDateFormat(getContext().getString(R.string.month_name_format), locale);
    for (MonthDescriptor month : months) {
      month.setLabel(monthNameFormat.format(month.getDate()));
    }
    weekdayNameFormat =
        new SimpleDateFormat(getContext().getString(R.string.day_name_format), locale);
    fullDateFormat = DateFormat.getDateInstance(DateFormat.MEDIUM, locale);

    this.selectionMode = SelectionMode.SINGLE;
    // Clear out any previously-selected dates/cells.
    selectedCals.clear();
    selectedCells.clear();
    highlightedCells.clear();

    // Clear previous state.
    cells.clear();
    months.clear();
    minCal.setTime(minDate);
    maxCal.setTime(maxDate);
    setMidnight(minCal);
    setMidnight(maxCal);
    displayOnly = false;

    // maxDate is exclusive: bump back to the previous day so if maxDate is
    // the first of a month,
    // we don't accidentally include that month in the view.
    maxCal.add(MINUTE, -1);

    // Now iterate between minCal and maxCal and build up our list of months
    // to show.
    monthCounter.setTime(minCal.getTime());
    final int maxMonth = maxCal.get(MONTH);
    final int maxYear = maxCal.get(YEAR);
    while ((monthCounter.get(MONTH) <= maxMonth // Up to, including the
            // month.
            || monthCounter.get(YEAR) < maxYear) // Up to the year.
        && monthCounter.get(YEAR) < maxYear + 1) { // But not > next yr.
      Date date = monthCounter.getTime();
      MonthDescriptor month =
          new MonthDescriptor(
              monthCounter.get(MONTH), monthCounter.get(YEAR), date, monthNameFormat.format(date));
      cells.add(getMonthCells(month, monthCounter));
      // Logr.d("Adding month %s", month);
      months.add(month);
      monthCounter.add(MONTH, 1);
    }

    validateAndUpdate();
    return new FluentInitializer();
  }