@Override
                    public boolean remove() {
                        gatherDrawables();
                        atlasData.produceAtlas();
                        sortBySelectedMode();
                        getStage().setScrollFocus(scrollPane);
                        return super.remove();
                    }
Recreates the drawables array only including visible drawables.
core/src/com/ray3k/skincomposer/dialog/DialogDrawables.java