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/*
* This file is part of WebLookAndFeel library.
*
* WebLookAndFeel library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* WebLookAndFeel library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WebLookAndFeel library. If not, see objects type
* @return true if list changed as the result of this operation, false otherwise
*/
public static boolean addAll ( final Collection collection, final T... objects )
{
boolean result = false;
for ( final T object : objects )
{
result |= collection.add ( object );
}
return result;
}
/**
* Returns copy of the specified list.
* Note that this method will copy same list values into the new list.
*
* @param collection list to copy
* @param list type
* @return copy of the specified list
*/
public static List copy ( final Collection collection )
{
if ( collection == null )
{
return null;
}
return new ArrayList ( collection );
}
/**
* Returns clone of the specified list.
* Note that this method will clone all values into new list.
*
* @param collection list to clone
* @param list type
* @return clone of the specified list
*/
public static List clone ( final Collection collection )
{
if ( collection == null )
{
return null;
}
final List cloned = new ArrayList ( collection.size () );
for ( final T value : collection )
{
cloned.add ( ReflectUtils.cloneSafely ( value ) );
}
return cloned;
}
/**
* Returns data converted into list.
*
* @param data data
* @param data type
* @return data list
*/
public static List copy ( final T... data )
{
final List list = new ArrayList ( data.length );
Collections.addAll ( list, data );
return list;
}
/**
* Removes all null elements from list.
*
* @param list list to refactor
* @param list type
* @return refactored list
*/
public static List removeNulls ( final List list )
{
if ( list == null )
{
return null;
}
for ( int i = list.size () - 1; i >= 0; i-- )
{
if ( list.get ( i ) == null )
{
list.remove ( i );
}
}
return list;
}
/**
* Returns whether lists are equal or not.
*
* @param list1 first list
* @param list2 second list
* @return true if lists are equal, false otherwise
*/
public static boolean areEqual ( final List list1, final List list2 )
{
if ( list1 == null && list2 == null )
{
return true;
}
else if ( ( list1 == null || list2 == null ) && list1 != list2 )
{
return false;
}
else
{
if ( list1.size () != list2.size () )
{
return false;
}
else
{
for ( final Object object : list1 )
{
if ( !list2.contains ( object ) )
{
return false;
}
}
return true;
}
}
}
/**
* Returns list of strings extracted from the specified elements list.
*
* @param list elements list
* @param textProvider text provider
* @param elements type
* @return list of strings extracted from the specified elements list
*/
public static List toStringList ( final List list, final TextProvider textProvider )
{
final List stringList = new ArrayList ( list.size () );
for ( final T element : list )
{
stringList.add ( textProvider.provide ( element ) );
}
return stringList;
}
/**
* Returns an int array created using Integer list.
*
* @param list Integer list
* @return int array
*/
public static int[] toArray ( final List list )
{
final int[] array = new int[ list.size () ];
for ( int i = 0; i < list.size (); i++ )
{
final Integer integer = list.get ( i );
array[ i ] = integer != null ? integer : 0;
}
return array;
}
/**
* Returns a list of objects converted from array.
*
* @param array data array
* @param data type
* @return data list
*/
public static List toList ( final T[] array )
{
final List list = new ArrayList ( array.length );
Collections.addAll ( list, array );
return list;
}
/**
* Returns a list of objects converted from deque.
*
* @param deque data deque
* @param data type
* @return data list
*/
public static List toList ( final Deque deque )
{
return new ArrayList ( deque );
}
/**
* Returns list of elements filtered from collection.
*
* @param collection collecton to filter
* @param filter filter to process
* @param elements type
* @return list of elements filtered from collection
*/
public static List filter ( final Collection collection, final Filter filter )
{
final List filtered = new ArrayList ( collection.size () );
for ( final T element : collection )
{
if ( filter.accept ( element ) )
{
filtered.add ( element );
}
}
return filtered;
}
/**
* Returns map keys list.
*
* @param map map to process
* @param key object type
* @param value object type
* @return map keys list
*/
public static List keysList ( final Map map )
{
return new ArrayList ( map.keySet () );
}
/**
* Returns map values list.
*
* @param map map to process
* @param key object type
* @param value object type
* @return map values list
*/
public static List valuesList ( final Map map )
{
return new ArrayList ( map.values () );
}
/**
* Returns map values summary list with unique elements only.
*
* @param map map to process
* @param key object type
* @param value object type
* @return map values summary list with unique elements only
*/
public static List valuesSummaryList ( final Map> map )
{
final ArrayList summary = new ArrayList ( 0 );
for ( final Map.Entry> entry : map.entrySet () )
{
final List list = entry.getValue ();
summary.ensureCapacity ( summary.size () + list.size () );
for ( final V value : list )
{
if ( !summary.contains ( value ) )
{
summary.add ( value );
}
}
}
return summary;
}
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