it.polimi.dima.mediatracker.adapters.media_items_list

Class SectionedRecyclerViewAdapter.SectionedAdapterTouchHelperCallback

java.lang.Object

android.support.v7.widget.helper.ItemTouchHelper.Callback

it.polimi.dima.mediatracker.adapters.media_items_list.SectionedRecyclerViewAdapter.SectionedAdapterTouchHelperCallback

Enclosing class:

SectionedRecyclerViewAdapter<T extends Sectioned>

public abstract class SectionedRecyclerViewAdapter.SectionedAdapterTouchHelperCallback
extends android.support.v7.widget.helper.ItemTouchHelper.Callback

TouchHelper Callback for the adapter that allows to manage swiping and drag&drop on the list

Field Summary

Fields inherited from class android.support.v7.widget.helper.ItemTouchHelper.Callback

DEFAULT_DRAG_ANIMATION_DURATION, DEFAULT_SWIPE_ANIMATION_DURATION

Constructor Summary

Constructors

Constructor and Description
SectionedAdapterTouchHelperCallback()

Method Summary

Modifier and Type	Method and Description
void	clearView(android.support.v7.widget.RecyclerView recyclerView, android.support.v7.widget.RecyclerView.ViewHolder viewHolder) Allows to recognize a drop after a drag&drop operation, calling the implementation onItemDropped(int, int, Section, Section) to manage it
abstract int	getItemMovementFlags(int itemPosition, android.support.v7.widget.RecyclerView recyclerView, android.support.v7.widget.RecyclerView.ViewHolder viewHolder) Works just like ItemTouchHelper.Callback.getMovementFlags(RecyclerView, RecyclerView.ViewHolder) but directly provides the item position (do NOT use getAdapterPosition() on the ViewHolder)
int	getMovementFlags(android.support.v7.widget.RecyclerView recyclerView, android.support.v7.widget.RecyclerView.ViewHolder viewHolder) Returns no allowed movement for section elements, calls the implementation getItemMovementFlags(int, RecyclerView, RecyclerView.ViewHolder) to the the allowed movement for the actual items
abstract void	onItemDropped(int itemPosition, int targetItemPosition, Section itemSection, Section targetItemSection) Similar to ItemTouchHelper.Callback.onMove(RecyclerView, RecyclerView.ViewHolder, RecyclerView.ViewHolder) but fired only after the item is actually dropped after a drag&drop operation NOTE: if itemPosition=targetItemPosition but itemSection!=targetItemSection the item has not been moved in the list but its section changes (happens when the item is the last before a section and it gets moved to the first position of the next section)
abstract boolean	onItemMove(int itemPosition, int targetItemPosition, Section itemSection, Section targetItemSection, android.support.v7.widget.RecyclerView recyclerView, android.support.v7.widget.RecyclerView.ViewHolder viewHolder, android.support.v7.widget.RecyclerView.ViewHolder target) Works just like ItemTouchHelper.Callback.onMove(RecyclerView, RecyclerView.ViewHolder, RecyclerView.ViewHolder) but directly provides the items positions (do NOT use getAdapterPosition() on the ViewHolders).
abstract void	onItemSwiped(int itemPosition, android.support.v7.widget.RecyclerView.ViewHolder viewHolder, int direction) Works just like ItemTouchHelper.Callback.onSwiped(RecyclerView.ViewHolder, int) but directly provides the item position (do NOT use getAdapterPosition() on the ViewHolder)
boolean	onMove(android.support.v7.widget.RecyclerView recyclerView, android.support.v7.widget.RecyclerView.ViewHolder viewHolder, android.support.v7.widget.RecyclerView.ViewHolder target) Translates from the ELEMENTS LIST positions to the ITEMS LIST indices and then calls the implementation onItemMove(int, int, Section, Section, RecyclerView, RecyclerView.ViewHolder, RecyclerView.ViewHolder) to manage the movement of the actual items
void	onSwiped(android.support.v7.widget.RecyclerView.ViewHolder viewHolder, int direction) Translates from the ELEMENTS LIST positions to the ITEMS LIST indices and then calls the implementation onItemSwiped(int, RecyclerView.ViewHolder, int) to manage the swiping of the actual items

Methods inherited from class android.support.v7.widget.helper.ItemTouchHelper.Callback

canDropOver, chooseDropTarget, convertToAbsoluteDirection, convertToRelativeDirection, getAnimationDuration, getBoundingBoxMargin, getDefaultUIUtil, getMoveThreshold, getSwipeEscapeVelocity, getSwipeThreshold, getSwipeVelocityThreshold, interpolateOutOfBoundsScroll, isItemViewSwipeEnabled, isLongPressDragEnabled, makeFlag, makeMovementFlags, onChildDraw, onChildDrawOver, onMoved, onSelectedChanged

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SectionedAdapterTouchHelperCallback

public SectionedAdapterTouchHelperCallback()

Method Detail

getMovementFlags

public int getMovementFlags(android.support.v7.widget.RecyclerView recyclerView,
                            android.support.v7.widget.RecyclerView.ViewHolder viewHolder)

Returns no allowed movement for section elements, calls the implementation getItemMovementFlags(int, RecyclerView, RecyclerView.ViewHolder) to the the allowed movement for the actual items

Specified by:

getMovementFlags in class android.support.v7.widget.helper.ItemTouchHelper.Callback

onMove

public boolean onMove(android.support.v7.widget.RecyclerView recyclerView,
                      android.support.v7.widget.RecyclerView.ViewHolder viewHolder,
                      android.support.v7.widget.RecyclerView.ViewHolder target)

Translates from the ELEMENTS LIST positions to the ITEMS LIST indices and then calls the implementation onItemMove(int, int, Section, Section, RecyclerView, RecyclerView.ViewHolder, RecyclerView.ViewHolder) to manage the movement of the actual items

Specified by:

onMove in class android.support.v7.widget.helper.ItemTouchHelper.Callback

onSwiped

public void onSwiped(android.support.v7.widget.RecyclerView.ViewHolder viewHolder,
                     int direction)

Translates from the ELEMENTS LIST positions to the ITEMS LIST indices and then calls the implementation onItemSwiped(int, RecyclerView.ViewHolder, int) to manage the swiping of the actual items

Specified by:

onSwiped in class android.support.v7.widget.helper.ItemTouchHelper.Callback

clearView

public void clearView(android.support.v7.widget.RecyclerView recyclerView,
                      android.support.v7.widget.RecyclerView.ViewHolder viewHolder)

Allows to recognize a drop after a drag&drop operation, calling the implementation onItemDropped(int, int, Section, Section) to manage it

Overrides:

clearView in class android.support.v7.widget.helper.ItemTouchHelper.Callback

getItemMovementFlags

public abstract int getItemMovementFlags(int itemPosition,
                                         android.support.v7.widget.RecyclerView recyclerView,
                                         android.support.v7.widget.RecyclerView.ViewHolder viewHolder)

Works just like ItemTouchHelper.Callback.getMovementFlags(RecyclerView, RecyclerView.ViewHolder) but directly provides the item position (do NOT use getAdapterPosition() on the ViewHolder)

onItemSwiped

public abstract void onItemSwiped(int itemPosition,
                                  android.support.v7.widget.RecyclerView.ViewHolder viewHolder,
                                  int direction)

Works just like ItemTouchHelper.Callback.onSwiped(RecyclerView.ViewHolder, int) but directly provides the item position (do NOT use getAdapterPosition() on the ViewHolder)

onItemMove

public abstract boolean onItemMove(int itemPosition,
                                   int targetItemPosition,
                                   Section itemSection,
                                   Section targetItemSection,
                                   android.support.v7.widget.RecyclerView recyclerView,
                                   android.support.v7.widget.RecyclerView.ViewHolder viewHolder,
                                   android.support.v7.widget.RecyclerView.ViewHolder target)

Works just like ItemTouchHelper.Callback.onMove(RecyclerView, RecyclerView.ViewHolder, RecyclerView.ViewHolder) but directly provides the items positions (do NOT use getAdapterPosition() on the ViewHolders). It also provides the starting and ending sections NOTE: if itemPosition=targetItemPosition but itemSection!=targetItemSection the item has not been moved in the list but its section changes (happens when the item is the last before a section and it gets moved to the first position of the next section)

onItemDropped

public abstract void onItemDropped(int itemPosition,
                                   int targetItemPosition,
                                   Section itemSection,
                                   Section targetItemSection)

Similar to ItemTouchHelper.Callback.onMove(RecyclerView, RecyclerView.ViewHolder, RecyclerView.ViewHolder) but fired only after the item is actually dropped after a drag&drop operation NOTE: if itemPosition=targetItemPosition but itemSection!=targetItemSection the item has not been moved in the list but its section changes (happens when the item is the last before a section and it gets moved to the first position of the next section)

Parameters:

itemPosition - starting position

targetItemPosition - ending position

itemSection - starting section

targetItemSection - ending section