Temporarily masks the indices of deleted items from a source cursor

IndexMaskingCursor.java

package com.techsmith.utilities;

import android.database.AbstractCursor;
import android.database.Cursor;

public class IndexMaskingCursor extends AbstractCursor {
   private final Cursor mCursor;
   private final int[]  mMaskedPositions;
   
   public MaskingCursor( Cursor cursor, int[] maskedPositions ) {
      mCursor = cursor;
      mMaskedPositions = maskedPositions;
   }
   
   @Override
   public int getCount() {
      return mCursor.getCount() - mMaskedPositions.length;
   }

   @Override
   public String[] getColumnNames() {
      return mCursor.getColumnNames();
   }

   @Override
   public String getString( int i ) {
      return mCursor.getString( i );
   }

   @Override
   public short getShort( int i ) {
      return mCursor.getShort( i );
   }

   @Override
   public int getInt( int i ) {
      return mCursor.getInt( i );
   }

   @Override
   public long getLong( int i ) {
      return mCursor.getLong( i );
   }

   @Override
   public float getFloat( int i ) {
      return mCursor.getFloat( i );
   }

   @Override
   public double getDouble( int i ) {
      return mCursor.getDouble( i );
   }

   @Override
   public boolean isNull( int i ) {
      return mCursor.isNull( i );
   }

   @Override
   public boolean onMove( int oldPosition, int newPosition ) {
      int offset = 0;
      
      for ( int position : mMaskedPositions ) {
         if ( newPosition >= position ) {
            offset++;
         }
      }
      
      return mCursor.moveToPosition( newPosition + offset );
   }

   @Override
   public void close() {
      mCursor.close();
   }
}