Examples with IExpandable com.mikepenz.fastadapter.IExpandable used on opensource projects

Example 1 with IExpandable

use of com.mikepenz.fastadapter.IExpandable in project FastAdapter by mikepenz.

the class SubItemUtil method notifyItemsChanged.

/**
     * notifies items (incl. sub items if they are currently extended)
     *
     * @param adapter the adapter
     * @param identifiers set of identifiers that should be notified
     * @param restoreExpandedState true, if expanded headers should stay expanded
     */
public static <Item extends IItem & IExpandable> void notifyItemsChanged(final FastAdapter adapter, Set<Long> identifiers, boolean restoreExpandedState) {
    int i;
    IItem item;
    for (i = 0; i < adapter.getItemCount(); i++) {
        item = adapter.getItem(i);
        if (item instanceof IExpandable) {
            notifyItemsChanged(adapter, (Item) item, identifiers, true, restoreExpandedState);
        } else if (identifiers.contains(item.getIdentifier())) {
            adapter.notifyAdapterItemChanged(i);
        }
    }
}

Example 2 with IExpandable

use of com.mikepenz.fastadapter.IExpandable in project FastAdapter by mikepenz.

the class SubItemUtil method deleteSelected.

/**
     * deletes all selected items from the adapter respecting if the are sub items or not
     * subitems are removed from their parents sublists, main items are directly removed
     *
     * @param deleteEmptyHeaders if true, empty headers will be removed from the adapter
     * @return List of items that have been removed from the adapter
     */
public static List<IItem> deleteSelected(final FastAdapter fastAdapter, boolean notifyParent, boolean deleteEmptyHeaders) {
    List<IItem> deleted = new ArrayList<>();
    // we use a LinkedList, because this has performance advantages when modifying the listIterator during iteration!
    // Modifying list is O(1)
    LinkedList<IItem> selectedItems = new LinkedList<>(getSelectedItems(fastAdapter));
    //        Log.d("DELETE", "selectedItems: " + selectedItems.size());
    // we delete item per item from the adapter directly or from the parent
    // if keepEmptyHeaders is false, we add empty headers to the selected items set via the iterator, so that they are processed in the loop as well
    IItem item, parent;
    int pos, parentPos;
    boolean expanded;
    ListIterator<IItem> it = selectedItems.listIterator();
    while (it.hasNext()) {
        item = it.next();
        pos = fastAdapter.getPosition(item);
        // search for parent - if we find one, we remove the item from the parent's subitems directly
        parent = getParent(item);
        if (parent != null) {
            parentPos = fastAdapter.getPosition(parent);
            boolean success = ((IExpandable) parent).getSubItems().remove(item);
            // check if parent is expanded and notify the adapter about the removed item, if necessary (only if parent is visible)
            if (parentPos != -1 && ((IExpandable) parent).isExpanded()) {
                fastAdapter.notifyAdapterSubItemsChanged(parentPos, ((IExpandable) parent).getSubItems().size() + 1);
            }
            // if desired, notify the parent about its changed items (only if parent is visible!)
            if (parentPos != -1 && notifyParent) {
                expanded = ((IExpandable) parent).isExpanded();
                fastAdapter.notifyAdapterItemChanged(parentPos);
                // expand the item again if it was expanded before calling notifyAdapterItemChanged
                if (expanded) {
                    fastAdapter.expand(parentPos);
                }
            }
            deleted.add(item);
            if (deleteEmptyHeaders && ((IExpandable) parent).getSubItems().size() == 0) {
                it.add(parent);
                it.previous();
            }
        } else if (pos != -1) {
            // if we did not find a parent, we remove the item from the adapter
            IAdapter adapter = fastAdapter.getAdapter(pos);
            boolean success = false;
            if (adapter instanceof IItemAdapter) {
                success = ((IItemAdapter) adapter).remove(pos) != null;
            }
            boolean isHeader = item instanceof IExpandable && ((IExpandable) item).getSubItems() != null;
            //                Log.d("DELETE", "success=" + success + " | deletedId=" + item.getIdentifier() + "(" + (isHeader ? "EMPTY HEADER" : "ITEM WITHOUT HEADER") + ")");
            deleted.add(item);
        }
    }
    return deleted;
}

Example 3 with IExpandable

use of com.mikepenz.fastadapter.IExpandable in project FastAdapter by mikepenz.

the class SubItemUtil method getAllItems.

/**
     * internal function!
     *
     * Why countHeaders and subItems => because the subItemsOnly is an internal flag for the recursive call to optimise it!
     */
private static List<IItem> getAllItems(List<IItem> items, boolean countHeaders, boolean subItemsOnly, IPredicate predicate) {
    List<IItem> res = new ArrayList<>();
    if (items == null || items.size() == 0) {
        return res;
    }
    int temp;
    int itemCount = items.size();
    IItem item;
    List<IItem> subItems;
    for (int i = 0; i < itemCount; i++) {
        item = items.get(i);
        if (item instanceof IExpandable && ((IExpandable) item).getSubItems() != null) {
            subItems = ((IExpandable) item).getSubItems();
            if (predicate == null) {
                if (countHeaders) {
                    res.add(item);
                }
                if (subItems != null && subItems.size() > 0) {
                    res.addAll(subItems);
                }
                res.addAll(getAllItems(subItems, countHeaders, true, predicate));
            } else {
                if (countHeaders && predicate.apply(item)) {
                    res.add(item);
                }
                temp = subItems != null ? subItems.size() : 0;
                for (int j = 0; j < temp; j++) {
                    if (predicate.apply(subItems.get(j))) {
                        res.add(subItems.get(j));
                    }
                }
            }
        } else // sub items will be counted in above if statement!
        if (!subItemsOnly && getParent(item) == null) {
            if (predicate == null) {
                res.add(item);
            } else if (predicate.apply(item)) {
                res.add(item);
            }
        }
    }
    return res;
}

Example 4 with IExpandable

use of com.mikepenz.fastadapter.IExpandable in project FastAdapter by mikepenz.

the class SubItemUtil method delete.

/**
     * deletes all items in identifiersToDelete collection from the adapter respecting if there are sub items or not
     * subitems are removed from their parents sublists, main items are directly removed
     *
     * @param fastAdapter the adapter to remove the items from
     * @param identifiersToDelete ids of items to remove
     * @param notifyParent if true, headers of removed items will be notified about the change of their child items
     * @param deleteEmptyHeaders if true, empty headers will be removed from the adapter
     * @return List of items that have been removed from the adapter
     */
public static List<IItem> delete(final FastAdapter fastAdapter, Collection<Long> identifiersToDelete, boolean notifyParent, boolean deleteEmptyHeaders) {
    List<IItem> deleted = new ArrayList<>();
    if (identifiersToDelete == null || identifiersToDelete.size() == 0) {
        return deleted;
    }
    // we use a LinkedList, because this has performance advantages when modifying the listIterator during iteration!
    // Modifying list is O(1)
    LinkedList<Long> identifiers = new LinkedList<>(identifiersToDelete);
    // we delete item per item from the adapter directly or from the parent
    // if keepEmptyHeaders is false, we add empty headers to the selected items set via the iterator, so that they are processed in the loop as well
    IItem item, parent;
    int pos, parentPos;
    boolean expanded;
    Long identifier;
    ListIterator<Long> it = identifiers.listIterator();
    while (it.hasNext()) {
        identifier = it.next();
        pos = fastAdapter.getPosition(identifier);
        item = fastAdapter.getItem(pos);
        // search for parent - if we find one, we remove the item from the parent's subitems directly
        parent = getParent(item);
        if (parent != null) {
            parentPos = fastAdapter.getPosition(parent);
            boolean success = ((IExpandable) parent).getSubItems().remove(item);
            // check if parent is expanded and notify the adapter about the removed item, if necessary (only if parent is visible)
            if (parentPos != -1 && ((IExpandable) parent).isExpanded()) {
                fastAdapter.notifyAdapterSubItemsChanged(parentPos, ((IExpandable) parent).getSubItems().size() + 1);
            }
            // if desired, notify the parent about it's changed items (only if parent is visible!)
            if (parentPos != -1 && notifyParent) {
                expanded = ((IExpandable) parent).isExpanded();
                fastAdapter.notifyAdapterItemChanged(parentPos);
                // expand the item again if it was expanded before calling notifyAdapterItemChanged
                if (expanded) {
                    fastAdapter.expand(parentPos);
                }
            }
            deleted.add(item);
            if (deleteEmptyHeaders && ((IExpandable) parent).getSubItems().size() == 0) {
                it.add(parent.getIdentifier());
                it.previous();
            }
        } else if (pos != -1) {
            // if we did not find a parent, we remove the item from the adapter
            IAdapter adapter = fastAdapter.getAdapter(pos);
            boolean success = false;
            if (adapter instanceof IItemAdapter) {
                success = ((IItemAdapter) adapter).remove(pos) != null;
                if (success) {
                    fastAdapter.notifyAdapterItemRemoved(pos);
                }
            }
            boolean isHeader = item instanceof IExpandable && ((IExpandable) item).getSubItems() != null;
            //                Log.d("DELETE", "success=" + success + " | deletedId=" + item.getIdentifier() + "(" + (isHeader ? "EMPTY HEADER" : "ITEM WITHOUT HEADER") + ")");
            deleted.add(item);
        }
    }
    return deleted;
}

Example 5 with IExpandable

use of com.mikepenz.fastadapter.IExpandable in project FastAdapter by mikepenz.

the class SubItemUtil method notifyItemsChanged.

/**
     * notifies items (incl. sub items if they are currently extended)
     *
     * @param adapter the adapter
     * @param header the expandable header that should be checked (incl. sub items)
     * @param identifiers set of identifiers that should be notified
     * @param checkSubItems true, if sub items of headers items should be checked recursively
     * @param restoreExpandedState true, if expanded headers should stay expanded
     */
public static <Item extends IItem & IExpandable> void notifyItemsChanged(final FastAdapter adapter, Item header, Set<Long> identifiers, boolean checkSubItems, boolean restoreExpandedState) {
    int subItems = header.getSubItems().size();
    int position = adapter.getPosition(header);
    boolean expanded = header.isExpanded();
    // 1) check header itself
    if (identifiers.contains(header.getIdentifier())) {
        adapter.notifyAdapterItemChanged(position);
    }
    // 2) check sub items, recursively
    IItem item;
    if (header.isExpanded()) {
        for (int i = 0; i < subItems; i++) {
            item = (IItem) header.getSubItems().get(i);
            if (identifiers.contains(item.getIdentifier())) {
                //                    Log.d("NOTIFY", "Position=" + position + ", i=" + i);
                adapter.notifyAdapterItemChanged(position + i + 1);
            }
            if (checkSubItems && item instanceof IExpandable) {
                notifyItemsChanged(adapter, (Item) item, identifiers, true, restoreExpandedState);
            }
        }
    }
    if (restoreExpandedState && expanded) {
        adapter.expand(position);
    }
}