<?php
/**
* @brief Tree Builder
* @author <a href='https://www.invisioncommunity.com'>Invision Power Services, Inc.</a>
* @copyright (c) Invision Power Services, Inc.
* @license https://www.invisioncommunity.com/legal/standards/
* @package Invision Community
* @since 20 Feb 2013
*/
namespace IPS\Helpers\Tree;
/* To prevent PHP errors (extending class does not exist) revealing path */
if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
{
header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
exit;
}
/**
* Tree Table
*/
class _Tree
{
/**
* @brief Title for tree table
*/
public $title = '';
/**
* @brief URL where the tree table is displayed
*/
public $url = '';
/**
* @brief Callback function to get the root rows
*/
public $getRoots;
/**
* @brief Callback function to get a single row by ID
*/
public $getRow;
/**
* @brief Callback function to get the parent ID for a row
*/
public $getRowParentId;
/**
* @brief Callback function to get the child rows for a row
*/
public $getChildren;
/**
* @brief Searchable?
*/
public $searchable = FALSE;
/**
* @brief If true, will prevent any item from being moved out of its current parent, only allowing them to be reordered within their current parent
*/
protected $lockParents = FALSE;
/**
* @brief If true, root cannot be turned into sub-items, and other items cannot be turned into roots
*/
protected $protectRoots = FALSE;
/**
* @brief Number of roots to show per page (NULL for unlimited). In most cases this doesn't make sense, since it makes re-ordering impossible. But for trees which are not orderable and which may contain a lot of roots, you can set this value
*/
public $rootsPerPage = NULL;
/**
* @brief If using $rootsPerPage, a callback function that returns the total number of roots
*/
public $getTotalRoots = NULL;
/**
* Constructor
*
* @param string $url URL where the tree table is displayed
* @param string $title Tree Table title
* @param callback $getRoots Callback function to get the root rows
* @param callback $getRow Callback function to get a single row by ID
* @param callback $getRowParentId Callback function to get the parent ID for a row
* @param callback $getChildren Callback function to get the child rows for a row
* @param callback $searchable Show the search bar?
* @param bool $lockParents If true, will prevent any item from being moved out of its current parent, only allowing them to be reordered within their current parent
* @param bool $protectRoots If true, root cannot be turned into sub-items, and other items cannot be turned into roots
* @param int|null $rootsPerPage Number of roots to show per page (NULL for unlimited). In most cases this doesn't make sense, since it makes re-ordering impossible. But for trees which are not orderable and which may contain a lot of roots, you can set this value
* @param callback $getTotalRoots If using $rootsPerPage, a callback function that returns the total number of roots
* @return void
*/
public function __construct( $url, $title, $getRoots, $getRow, $getRowParentId, $getChildren, $getRootButtons=NULL, $searchable=FALSE, $lockParents=FALSE, $protectRoots=FALSE, $rootsPerPage = NULL, $getTotalRoots = NULL )
{
$this->url = $url;
$this->title = $title;
$this->getRoots = $getRoots;
$this->getRow = $getRow;
$this->getRowParentId = $getRowParentId;
$this->getChildren = $getChildren;
$this->getRootButtons = $getRootButtons ?: function(){ return array(); };
$this->searchable = $searchable;
$this->lockParents = $lockParents;
$this->protectRoots = $protectRoots;
$this->rootsPerPage = $rootsPerPage;
$this->getTotalRoots = $getTotalRoots;
}
/**
* Display Table
*
* @return string
*/
public function __toString()
{
try
{
/* Get rows */
$page = isset( \IPS\Request::i()->page ) ? intval( \IPS\Request::i()->page ) : 1;
$root = NULL;
$rootParent = NULL;
if( !\IPS\Request::i()->root )
{
$rows = call_user_func( $this->getRoots, $this->rootsPerPage ? array( ( $page - 1 ) * $this->rootsPerPage, $this->rootsPerPage ) : NULL );
}
else
{
$rows = call_user_func( $this->getChildren, \IPS\Request::i()->root );
if ( \IPS\Request::i()->isAjax() )
{
return \IPS\Theme::i()->getTemplate( 'trees', 'core' )->rows( $rows, mt_rand() );
}
$root = call_user_func( $this->getRow, \IPS\Request::i()->root, TRUE );
$rootParent = call_user_func( $this->getRowParentId, \IPS\Request::i()->root );
}
/* Pagination? */
$pagination = '';
if ( $this->rootsPerPage )
{
$totalNumber = call_user_func( $this->getTotalRoots );
if ( $totalNumber )
{
$pagination = \IPS\Theme::i()->getTemplate( 'global', 'core', 'global' )->pagination( $this->url, ceil( $totalNumber / $this->rootsPerPage ), $page, $this->rootsPerPage );
}
}
/* Display */
return \IPS\Theme::i()->getTemplate( 'trees', 'core' )->template( $this->url, $this->title, $root, $rootParent, $rows, call_user_func( $this->getRootButtons ), $this->lockParents, $this->protectRoots, $this->searchable, $pagination );
}
catch ( \Exception $e )
{
\IPS\IPS::exceptionHandler( $e );
}
catch ( \Throwable $e )
{
\IPS\IPS::exceptionHandler( $e );
}
}
}