/*package*/ void notifyGroupItemChanged(int groupPosition, Object payload) { final long packedPosition = ExpandableAdapterHelper.getPackedPositionForGroup(groupPosition); final int flatPosition = mPositionTranslator.getFlatPosition(packedPosition); if (flatPosition != RecyclerView.NO_POSITION) { notifyItemChanged(flatPosition, payload); } }
/*package*/ boolean collapseGroup(int groupPosition, boolean fromUser, Object payload) { if (!mPositionTranslator.isGroupExpanded(groupPosition)) { return false; } // call hook method if (!mExpandableItemAdapter.onHookGroupCollapse(groupPosition, fromUser, payload)) { return false; } if (mPositionTranslator.collapseGroup(groupPosition)) { final long packedPosition = ExpandableAdapterHelper.getPackedPositionForGroup(groupPosition); final int flatPosition = mPositionTranslator.getFlatPosition(packedPosition); final int childCount = mPositionTranslator.getChildCount(groupPosition); notifyItemRangeRemoved(flatPosition + 1, childCount); } { final long packedPosition = ExpandableAdapterHelper.getPackedPositionForGroup(groupPosition); final int flatPosition = mPositionTranslator.getFlatPosition(packedPosition); notifyItemChanged(flatPosition, payload); } // raise onGroupCollapse() event if (mOnGroupCollapseListener != null) { mOnGroupCollapseListener.onGroupCollapse(groupPosition, fromUser, payload); } return true; }
/*package*/ boolean expandGroup(int groupPosition, boolean fromUser, Object payload) { if (mPositionTranslator.isGroupExpanded(groupPosition)) { return false; } // call hook method if (!mExpandableItemAdapter.onHookGroupExpand(groupPosition, fromUser, payload)) { return false; } if (mPositionTranslator.expandGroup(groupPosition)) { final long packedPosition = ExpandableAdapterHelper.getPackedPositionForGroup(groupPosition); final int flatPosition = mPositionTranslator.getFlatPosition(packedPosition); final int childCount = mPositionTranslator.getChildCount(groupPosition); notifyItemRangeInserted(flatPosition + 1, childCount); } { final long packedPosition = ExpandableAdapterHelper.getPackedPositionForGroup(groupPosition); final int flatPosition = mPositionTranslator.getFlatPosition(packedPosition); notifyItemChanged(flatPosition, payload); } // raise onGroupExpand() event if (mOnGroupExpandListener != null) { mOnGroupExpandListener.onGroupExpand(groupPosition, fromUser, payload); } return true; }