Examples with ExpandableExtension com.mikepenz.fastadapter.expandable.ExpandableExtension used on opensource projects

Example 1 with ExpandableExtension

use of com.mikepenz.fastadapter.expandable.ExpandableExtension in project Hentoid by avluis.

the class ViewerGalleryFragment method updateListAdapter.

private void updateListAdapter(boolean isChapterEditMode) {
    if (isChapterEditMode) {
        if (!fastAdapter2.hasObservers())
            fastAdapter2.setHasStableIds(true);
        itemAdapter2.clear();
        ExpandableExtension<INestedItem<SubExpandableItem.ViewHolder>> expandableExtension = fastAdapter2.getOrCreateExtension(ExpandableExtension.class);
        GridLayoutManager glm = (GridLayoutManager) recyclerView.getLayoutManager();
        if (glm != null) {
            int spanCount = Preferences.getViewerGalleryColumns();
            glm.setSpanCount(spanCount);
            // Use the correct size to display chapter separators, if any
            GridLayoutManager.SpanSizeLookup spanSizeLookup = new GridLayoutManager.SpanSizeLookup() {

                @Override
                public int getSpanSize(int position) {
                    if (fastAdapter2.getItemViewType(position) == R.id.expandable_item) {
                        return spanCount;
                    }
                    return 1;
                }
            };
            glm.setSpanSizeLookup(spanSizeLookup);
        }
        // Activate drag & drop
        SimpleDragCallback dragCallback = new SimpleDragCallback(this);
        dragCallback.setNotifyAllDrops(true);
        touchHelper = new ItemTouchHelper(dragCallback);
        touchHelper.attachToRecyclerView(recyclerView);
        recyclerView.setAdapter(fastAdapter2);
        fastAdapter2.addEventHook(new SubExpandableItem.DragHandlerTouchEvent(position -> {
            RecyclerView.ViewHolder vh = recyclerView.findViewHolderForAdapterPosition(position);
            if (vh != null)
                touchHelper.startDrag(vh);
            return null;
        }));
        // Item click listener
        fastAdapter2.setOnClickListener((v, a, i, p) -> onNestedItemClick(i));
        // Select on swipe
        if (mDragSelectTouchListener != null) {
            recyclerView.removeOnItemTouchListener(mDragSelectTouchListener);
            mDragSelectTouchListener = null;
        }
    } else {
        if (!fastAdapter.hasObservers())
            fastAdapter.setHasStableIds(true);
        itemAdapter.clear();
        // Gets (or creates and attaches if not yet existing) the extension from the given `FastAdapter`
        selectExtension = fastAdapter.getOrCreateExtension(SelectExtension.class);
        if (selectExtension != null) {
            selectExtension.setSelectable(true);
            selectExtension.setMultiSelect(true);
            selectExtension.setSelectOnLongClick(true);
            selectExtension.setSelectWithItemUpdate(true);
            selectExtension.setSelectionListener((i, b) -> this.onSelectionChanged());
            FastAdapterPreClickSelectHelper<ImageFileItem> helper = new FastAdapterPreClickSelectHelper<>(selectExtension);
            fastAdapter.setOnPreClickListener(helper::onPreClickListener);
            fastAdapter.setOnPreLongClickListener((v, a, i, p) -> {
                // Warning : specific code for drag selection
                mDragSelectTouchListener.startDragSelection(p);
                return helper.onPreLongClickListener(v, a, i, p);
            });
        }
        // Item click listener
        fastAdapter.setOnClickListener((v, a, i, p) -> onItemClick(i));
        GridLayoutManager glm = (GridLayoutManager) recyclerView.getLayoutManager();
        if (glm != null) {
            int spanCount = Preferences.getViewerGalleryColumns();
            glm.setSpanCount(spanCount);
            // Use the correct size to display chapter separators, if any
            GridLayoutManager.SpanSizeLookup spanSizeLookup = new GridLayoutManager.SpanSizeLookup() {

                @Override
                public int getSpanSize(int position) {
                    if (fastAdapter.getItemViewType(position) == R.id.expandable_item) {
                        return spanCount;
                    }
                    return 1;
                }
            };
            glm.setSpanSizeLookup(spanSizeLookup);
        }
        if (touchHelper != null)
            touchHelper.attachToRecyclerView(null);
        recyclerView.setAdapter(fastAdapter);
        // Select on swipe
        DragSelectTouchListener.OnDragSelectListener onDragSelectionListener = (start, end, isSelected) -> selectExtension.select(IntStream.rangeClosed(start, end).boxed().toList());
        mDragSelectTouchListener = new DragSelectTouchListener().withSelectListener(onDragSelectionListener);
        if (mDragSelectTouchListener2 != null) {
            recyclerView.removeOnItemTouchListener(mDragSelectTouchListener2);
            mDragSelectTouchListener2 = null;
        }
        recyclerView.addOnItemTouchListener(mDragSelectTouchListener);
    }
}