silverstripe-cms/code/Controllers/CMSSiteTreeFilter.php

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<?php
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namespace SilverStripe\CMS\Controllers;
use SilverStripe\Admin\LeftAndMain_SearchFilter;
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use SilverStripe\CMS\Model\SiteTree;
use SilverStripe\Core\ClassInfo;
use SilverStripe\Core\Convert;
use SilverStripe\Core\Injector\Injectable;
use SilverStripe\Forms\DateField;
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use SilverStripe\ORM\DataList;
use SilverStripe\ORM\SS_List;
use SilverStripe\Versioned\Versioned;
/**
* Base class for filtering the subtree for certain node statuses.
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*
* The simplest way of building a CMSSiteTreeFilter is to create a pagesToBeShown() method that
* returns an Iterator of maps, each entry containing the 'ID' and 'ParentID' of the pages to be
* included in the tree. The result of a DB::query() can then be returned directly.
*
* If you wish to make a more complex tree, you can overload includeInTree($page) to return true/
* false depending on whether the given page should be included. Note that you will need to include
* parent helper pages yourself.
*/
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abstract class CMSSiteTreeFilter implements LeftAndMain_SearchFilter
{
use Injectable;
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/**
* Search parameters, mostly properties on {@link SiteTree}.
* Caution: Unescaped data.
*
* @var array
*/
protected $params = [];
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/**
* List of filtered items and all their parents
*
* @var array
*/
protected $_cache_ids = null;
/**
* Subset of $_cache_ids which include only items that appear directly in search results.
* When highlighting these, item IDs in this subset should be visually distinguished from
* others in the complete set.
*
* @var array
*/
protected $_cache_highlight_ids = null;
/**
* @var array
*/
protected $_cache_expanded = [];
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/**
* @var string
*/
protected $childrenMethod = null;
/**
* @var string
*/
protected $numChildrenMethod = 'numChildren';
/**
* Returns a sorted array of all implementators of CMSSiteTreeFilter, suitable for use in a dropdown.
*
* @return array
*/
public static function get_all_filters()
{
// get all filter instances
$filters = ClassInfo::subclassesFor(CMSSiteTreeFilter::class);
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// remove abstract CMSSiteTreeFilter class
array_shift($filters);
// add filters to map
$filterMap = [];
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foreach ($filters as $filter) {
$filterMap[$filter] = $filter::title();
}
// Ensure that 'all pages' filter is on top position and everything else is sorted alphabetically
uasort($filterMap, function ($a, $b) {
return ($a === CMSSiteTreeFilter_Search::title())
? -1
: strcasecmp($a, $b);
});
return $filterMap;
}
public function __construct($params = null)
{
if ($params) {
$this->params = $params;
}
}
public function getChildrenMethod()
{
return $this->childrenMethod;
}
public function getNumChildrenMethod()
{
return $this->numChildrenMethod;
}
public function getPageClasses($page)
{
if ($this->_cache_ids === null) {
$this->populateIDs();
}
// If directly selected via filter, apply highlighting
if (!empty($this->_cache_highlight_ids[$page->ID])) {
return 'filtered-item';
}
return null;
}
/**
* Gets the list of filtered pages
*
* @see {@link SiteTree::getStatusFlags()}
* @return SS_List
*/
abstract public function getFilteredPages();
/**
* @return array Map of Page IDs to their respective ParentID values.
*/
public function pagesIncluded()
{
return $this->mapIDs($this->getFilteredPages());
}
/**
* Populate the IDs of the pages returned by pagesIncluded(), also including
* the necessary parent helper pages.
*/
protected function populateIDs()
{
$parents = [];
$this->_cache_ids = [];
$this->_cache_highlight_ids = [];
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if ($pages = $this->pagesIncluded()) {
// And keep a record of parents we don't need to get
// parents of themselves, as well as IDs to mark
foreach ($pages as $pageArr) {
$parents[$pageArr['ParentID']] = true;
$this->_cache_ids[$pageArr['ID']] = true;
$this->_cache_highlight_ids[$pageArr['ID']] = true;
}
while (!empty($parents)) {
$q = Versioned::get_including_deleted(SiteTree::class)
->byIDs(array_keys($parents));
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$list = $q->map('ID', 'ParentID');
$parents = [];
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foreach ($list as $id => $parentID) {
if ($parentID) {
$parents[$parentID] = true;
}
$this->_cache_ids[$id] = true;
$this->_cache_expanded[$id] = true;
}
}
}
}
public function isPageIncluded($page)
{
if ($this->_cache_ids === null) {
$this->populateIDs();
}
return !empty($this->_cache_ids[$page->ID]);
}
/**
* Applies the default filters to a specified DataList of pages
*
* @param DataList $query Unfiltered query
* @return DataList Filtered query
*/
protected function applyDefaultFilters($query)
{
$sng = SiteTree::singleton();
foreach ($this->params as $name => $val) {
if (empty($val)) {
continue;
}
switch ($name) {
case 'Term':
$query = $query->filterAny([
'URLSegment:PartialMatch' => Convert::raw2url($val),
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'Title:PartialMatch' => $val,
'MenuTitle:PartialMatch' => $val,
'Content:PartialMatch' => $val
]);
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break;
case 'URLSegment':
$query = $query->filter([
'URLSegment:PartialMatch' => Convert::raw2url($val),
]);
break;
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case 'LastEditedFrom':
$fromDate = new DateField(null, null, $val);
$query = $query->filter("LastEdited:GreaterThanOrEqual", $fromDate->dataValue().' 00:00:00');
break;
case 'LastEditedTo':
$toDate = new DateField(null, null, $val);
$query = $query->filter("LastEdited:LessThanOrEqual", $toDate->dataValue().' 23:59:59');
break;
case 'ClassName':
if ($val != 'All') {
$query = $query->filter('ClassName', $val);
}
break;
default:
$field = $sng->dbObject($name);
if ($field) {
$filter = $field->defaultSearchFilter();
$filter->setValue($val);
$query = $query->alterDataQuery([$filter, 'apply']);
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}
}
}
return $query;
}
/**
* Maps a list of pages to an array of associative arrays with ID and ParentID keys
*
* @param SS_List $pages
* @return array
*/
protected function mapIDs($pages)
{
$ids = [];
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if ($pages) {
foreach ($pages as $page) {
$ids[] = ['ID' => $page->ID, 'ParentID' => $page->ParentID];
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}
}
return $ids;
}
}