content: package com.chad.library.adapter.base.listener;
  
  import android.graphics.Canvas;
  import android.support.v7.widget.RecyclerView;
  
  /**
   * Created by luoxw on 2016/6/23.
   */
  public interface OnItemSwipeListener {
  
      /**
       * Called when the swipe action start.
       */
      void onItemSwipeStart(RecyclerView.ViewHolder viewHolder, int pos);
  
      /**
       * Called when the swipe action is over.
       * If you change the view on the start, you should reset is here, no matter the item has swiped or not.
       * @param pos If the view is swiped, pos will be negative.
       */
      void clearView(RecyclerView.ViewHolder viewHolder, int pos);
      /**
       * Called when item is swiped, the view is going to be removed from the adapter.
       */
      void onItemSwiped(RecyclerView.ViewHolder viewHolder, int pos);
  
      /**
       * Draw on the empty edge when swipe moving
       * @param canvas the empty edge's canvas
       * @param viewHolder The ViewHolder which is being interacted by the User or it was
       *                   interacted and simply animating to its original position
       * @param dX The amount of horizontal displacement caused by user's action
       * @param dY The amount of vertical displacement caused by user's action
       * @param isCurrentlyActive True if this view is currently being controlled by the user or
       *                          false it is simply animating back to its original state.
       */
      void onItemSwipeMoving(Canvas canvas, RecyclerView.ViewHolder viewHolder, float dX, float dY, boolean isCurrentlyActive);
  
  }
  