CMSMain

Complexity

Total Complexity

239

Size/Duplication

Total Lines	1435
Duplicated Lines	2.37 %

Coupling/Cohesion

Components	2
Dependencies	47

Importance

Changes	1
Bugs	0	Features	0

55 Methods

Rating	Name	Duplication	Size	Complexity
A	performPublish()	0	5	3
C	revert()	0	30	7
B	delete()	0	18	5
A	archive()	0	21	4
A	publish()	0	5	1
A	currentPageID()	0	7	1
C	save()	0	42	12
C	getNewItem()	0	47	8
B	deletefromlive()	0	55	8
C	unpublish()	1	21	5
A	rollback()	0	6	1
B	doRollback()	0	35	6
A	batchactions()	0	3	1
B	BatchActionParameters()	0	20	6
A	BatchActionList()	0	3	1
B	buildbrokenlinks()	0	35	5
C	publishall()	0	53	10
B	restore()	0	22	4
C	duplicate()	3	37	11
D	duplicatewithchildren()	3	31	9
A	providePermissions()	0	14	1
B	init()	0	46	5
A	index()	0	7	2
A	getResponseNegotiator()	0	8	1
A	ShowSwitchView()	0	3	1
A	SwitchView()	0	10	3
A	Link()	0	10	1
A	LinkPages()	0	3	1
A	LinkPagesWithSearch()	0	3	1
A	LinkTreeView()	0	3	1
A	LinkListView()	0	3	1
A	LinkGalleryView()	0	3	1
A	LinkPageEdit()	0	6	2
A	LinkPageSettings()	7	7	2
A	LinkPageHistory()	7	7	2
A	LinkWithSearch()	0	13	2
A	LinkPageAdd()	0	14	4
B	LinkPreview()	0	14	5
A	SiteTreeAsUL()	0	10	1
B	TreeIsFiltered()	0	9	5
A	ExtraTreeTools()	0	5	1
A	SearchForm()	0	70	2
A	getPageTypes()	0	8	2
A	doSearch()	0	3	1
A	Breadcrumbs()	0	11	2
C	SiteTreeHints()	0	61	15
D	PageTypes()	0	40	9
C	getRecord()	0	49	10
F	getEditForm()	0	90	26
A	treeview()	0	3	1
A	listview()	0	3	1
B	childfilter()	0	25	6
A	getQueryFilter()	0	8	3
A	getList()	0	9	3
C	ListViewForm()	13	92	7

<?php
/**
 * The main "content" area of the CMS.
 *
 * This class creates a 2-frame layout - left-tree and right-form - to sit beneath the main
 * admin menu.
 *
 * @package cms
 * @subpackage controller
 * @todo Create some base classes to contain the generic functionality that will be replicated.
 */
class CMSMain extends LeftAndMain implements CurrentPageIdentifier, PermissionProvider {

	private static $url_segment = 'pages';

Consider using a different property name as you override a private property of the parent class.

	private static $url_rule = '/$Action/$ID/$OtherID';

Consider using a different property name as you override a private property of the parent class.

	// Maintain a lower priority than other administration sections
	// so that Director does not think they are actions of CMSMain
	private static $url_priority = 39;

Consider using a different property name as you override a private property of the parent class.

	private static $menu_title = 'Edit Page';

Consider using a different property name as you override a private property of the parent class.

	private static $menu_priority = 10;

Consider using a different property name as you override a private property of the parent class.

	private static $tree_class = "SiteTree";

Consider using a different property name as you override a private property of the parent class.

	private static $subitem_class = "Member";

	/**
	 * Amount of results showing on a single page.
	 *
	 * @config
	 * @var int
	 */
	private static $page_length = 15;

	private static $allowed_actions = array(

Consider using a different property name as you override a private property of the parent class.

		'archive',
		'buildbrokenlinks',
		'deleteitems',
		'DeleteItemsForm',
		'dialog',
		'duplicate',
		'duplicatewithchildren',
		'publishall',
		'publishitems',
		'PublishItemsForm',
		'submit',
		'EditForm',
		'SearchForm',
		'SiteTreeAsUL',
		'getshowdeletedsubtree',
		'batchactions',
		'treeview',
		'listview',
		'ListViewForm',
		'childfilter',
	);

	/**
	 * Enable legacy batch actions.
	 * @deprecated since version 4.0
	 * @var array
	 * @config
	 */
	private static $enabled_legacy_actions = array();

	public function init() {
		// set reading lang
		if(SiteTree::has_extension('Translatable') && !$this->getRequest()->isAjax()) {
			Translatable::choose_site_locale(array_keys(Translatable::get_existing_content_languages('SiteTree')));
		}

		parent::init();

		Requirements::css(CMS_DIR . '/css/screen.css');
		Requirements::customCSS($this->generatePageIconsCss());

The method generatePageIconsCss does not exist on object<CMSMain>? Since you implemented __call, maybe consider adding a @method annotation.

		Requirements::add_i18n_javascript(CMS_DIR . '/javascript/lang', false, true);
		Requirements::javascript(CMS_DIR . '/javascript/dist/bundle-lib.js', [
			'provides' => [
				CMS_DIR . '/javascript/dist/CMSMain.AddForm.js',
				CMS_DIR . '/javascript/dist/CMSMain.EditForm.js',
				CMS_DIR . '/javascript/dist/CMSMain.js',
				CMS_DIR . '/javascript/dist/CMSMain.Tree.js',
				CMS_DIR . '/javascript/dist/CMSPageHistoryController.js',
				CMS_DIR . '/javascript/dist/RedirectorPage.js',
				CMS_DIR . '/javascript/dist/SilverStripeNavigator.js',
				CMS_DIR . '/javascript/dist/SiteTreeURLSegmentField.js'
			]
		]);

		CMSBatchActionHandler::register('publish', 'CMSBatchAction_Publish');
		CMSBatchActionHandler::register('unpublish', 'CMSBatchAction_Unpublish');


		// Check legacy actions
		$legacy = $this->config()->enabled_legacy_actions;

		// Delete from live is unnecessary since we have unpublish which does the same thing
		if(in_array('CMSBatchAction_DeleteFromLive', $legacy)) {
			Deprecation::notice('4.0', 'Delete From Live is deprecated. Use Un-publish instead');
			CMSBatchActionHandler::register('deletefromlive', 'CMSBatchAction_DeleteFromLive');
		}

		// Delete action
		if(in_array('CMSBatchAction_Delete', $legacy)) {
			Deprecation::notice('4.0', 'Delete from Stage is deprecated. Use Archive instead.');
			CMSBatchActionHandler::register('delete', 'CMSBatchAction_Delete');
		} else {
			CMSBatchActionHandler::register('archive', 'CMSBatchAction_Archive');
			CMSBatchActionHandler::register('restore', 'CMSBatchAction_Restore');
		}
	}

	public function index($request) {
		// In case we're not showing a specific record, explicitly remove any session state,
		// to avoid it being highlighted in the tree, and causing an edit form to show.
		if(!$request->param('Action')) $this->setCurrentPageId(null);

		return parent::index($request);
	}

	public function getResponseNegotiator() {
		$negotiator = parent::getResponseNegotiator();
		$controller = $this;
		$negotiator->setCallback('ListViewForm', function() use(&$controller) {
			return $controller->ListViewForm()->forTemplate();
		});
		return $negotiator;
	}

	/**
	 * If this is set to true, the "switchView" context in the
	 * template is shown, with links to the staging and publish site.
	 *
	 * @return boolean
	 */
	public function ShowSwitchView() {
		return true;
	}

	/**
	 * Overloads the LeftAndMain::ShowView. Allows to pass a page as a parameter, so we are able
	 * to switch view also for archived versions.
	 */
	public function SwitchView($page = null) {
		if(!$page) {
			$page = $this->currentPage();
		}

		if($page) {
			$nav = SilverStripeNavigator::get_for_record($page);
			return $nav['items'];
		}
	}

	//------------------------------------------------------------------------------------------//
	// Main controllers

	//------------------------------------------------------------------------------------------//
	// Main UI components

	/**
	 * Override {@link LeftAndMain} Link to allow blank URL segment for CMSMain.
	 *
	 * @param string|null $action Action to link to.
	 * @return string
	 */
	public function Link($action = null) {
		$link = Controller::join_links(
			$this->stat('url_base', true),

The call to CMSMain::stat() has too many arguments starting with true.

			$this->stat('url_segment', true), // in case we want to change the segment

The call to CMSMain::stat() has too many arguments starting with true.

			'/', // trailing slash needed if $action is null!
			"$action"
		);
		$this->extend('updateLink', $link);
		return $link;
	}

	public function LinkPages() {
		return singleton('CMSPagesController')->Link();
	}

	public function LinkPagesWithSearch() {
		return $this->LinkWithSearch($this->LinkPages());
	}

	public function LinkTreeView() {
		return $this->LinkWithSearch(singleton('CMSMain')->Link('treeview'));
	}

	public function LinkListView() {
		return $this->LinkWithSearch(singleton('CMSMain')->Link('listview'));
	}

	public function LinkGalleryView() {
		return $this->LinkWithSearch(singleton('CMSMain')->Link('galleryview'));
	}

	public function LinkPageEdit($id = null) {
		if(!$id) $id = $this->currentPageID();
		return $this->LinkWithSearch(
			Controller::join_links(singleton('CMSPageEditController')->Link('show'), $id)
		);
	}

	public function LinkPageSettings() {

This method seems to be duplicated in your project.

		if($id = $this->currentPageID()) {
			return $this->LinkWithSearch(
				Controller::join_links(singleton('CMSPageSettingsController')->Link('show'), $id)
			);
		}
	}

	public function LinkPageHistory() {

This method seems to be duplicated in your project.

		if($id = $this->currentPageID()) {
			return $this->LinkWithSearch(
				Controller::join_links(singleton('CMSPageHistoryController')->Link('show'), $id)
			);
		}
	}

	public function LinkWithSearch($link) {
		// Whitelist to avoid side effects
		$params = array(
			'q' => (array)$this->getRequest()->getVar('q'),
			'ParentID' => $this->getRequest()->getVar('ParentID')
		);
		$link = Controller::join_links(
			$link,
			array_filter(array_values($params)) ? '?' . http_build_query($params) : null
		);
		$this->extend('updateLinkWithSearch', $link);
		return $link;
	}

	public function LinkPageAdd($extra = null, $placeholders = null) {
		$link = singleton("CMSPageAddController")->Link();
		$this->extend('updateLinkPageAdd', $link);

		if($extra) {
			$link = Controller::join_links ($link, $extra);
		}

		if($placeholders) {
			$link .= (strpos($link, '?') === false ? "?$placeholders" : "&$placeholders");
		}

		return $link;
	}

	/**
	 * @return string
	 */
	public function LinkPreview() {
		$record = $this->getRecord($this->currentPageID());
		$baseLink = Director::absoluteBaseURL();
		if ($record && $record instanceof Page) {

The class Page does not exist. Did you forget a USE statement, or did you not list all dependencies?

			// if we are an external redirector don't show a link
			if ($record instanceof RedirectorPage && $record->RedirectionType == 'External') {
				$baseLink = false;
			}
			else {
				$baseLink = $record->Link('?stage=Stage');
			}
		}
		return $baseLink;
	}

	/**
	 * Return the entire site tree as a nested set of ULs
	 */
	public function SiteTreeAsUL() {
		// Pre-cache sitetree version numbers for querying efficiency
		Versioned::prepopulate_versionnumber_cache("SiteTree", "Stage");
		Versioned::prepopulate_versionnumber_cache("SiteTree", "Live");
		$html = $this->getSiteTreeFor($this->stat('tree_class'));

		$this->extend('updateSiteTreeAsUL', $html);

		return $html;
	}

	/**
	 * @return boolean
	 */
	public function TreeIsFiltered() {
		$query = $this->getRequest()->getVar('q');

		if (!$query || (count($query) === 1 && isset($query['FilterClass']) && $query['FilterClass'] === 'CMSSiteTreeFilter_Search')) {
			return false;
		}

		return true;
	}

	public function ExtraTreeTools() {
		$html = '';
		$this->extend('updateExtraTreeTools', $html);
		return $html;
	}

	/**
	 * Returns a Form for page searching for use in templates.
	 *
	 * Can be modified from a decorator by a 'updateSearchForm' method
	 *
	 * @return Form
	 */
	public function SearchForm() {
		// Create the fields
		$content = new TextField('q[Term]', _t('CMSSearch.FILTERLABELTEXT', 'Search'));
		$dateHeader = new HeaderField('q[Date]', _t('CMSSearch.PAGEFILTERDATEHEADING', 'Last edited'), 4);
		$dateFrom = new DateField(
			'q[LastEditedFrom]',
			_t('CMSSearch.FILTERDATEFROM', 'From')
		);
		$dateFrom->setConfig('showcalendar', true);
		$dateTo = new DateField(
			'q[LastEditedTo]',
			_t('CMSSearch.FILTERDATETO', 'To')
		);
		$dateTo->setConfig('showcalendar', true);
		$pageFilter = new DropdownField(
			'q[FilterClass]',
			_t('CMSMain.PAGES', 'Page status'),
			CMSSiteTreeFilter::get_all_filters()
		);
		$pageClasses = new DropdownField(
			'q[ClassName]',
			_t('CMSMain.PAGETYPEOPT', 'Page type', 'Dropdown for limiting search to a page type'),
			$this->getPageTypes()
		);
		$pageClasses->setEmptyString(_t('CMSMain.PAGETYPEANYOPT','Any'));

		// Group the Datefields
		$dateGroup = new FieldGroup(
			$dateHeader,
			$dateFrom,
			$dateTo
		);
		$dateGroup->setFieldHolderTemplate('FieldGroup_DefaultFieldHolder')->addExtraClass('stacked');

		// Create the Field list
		$fields = new FieldList(
			$content,
			$dateGroup,
			$pageFilter,
			$pageClasses
		);

		// Create the Search and Reset action
		$actions = new FieldList(
			FormAction::create('doSearch',  _t('CMSMain_left_ss.APPLY_FILTER', 'Search'))
				->addExtraClass('ss-ui-action-constructive'),
			Object::create('ResetFormAction', 'clear', _t('CMSMain_left_ss.CLEAR_FILTER', 'Clear'))
		);

		// Use <button> to allow full jQuery UI styling on the all of the Actions
		foreach($actions->dataFields() as $action) {
			$action->setUseButtonTag(true);
		}

		// Create the form
		$form = Form::create($this, 'SearchForm', $fields, $actions)
			->addExtraClass('cms-search-form')
			->setFormMethod('GET')
			->setFormAction($this->Link())
			->disableSecurityToken()
			->unsetValidator();

		// Load the form with previously sent search data
		$form->loadDataFrom($this->getRequest()->getVars());

		// Allow decorators to modify the form
		$this->extend('updateSearchForm', $form);

		return $form;
	}

	/**
	 * Returns a sorted array suitable for a dropdown with pagetypes and their translated name
	 *
	 * @return array
	 */
	protected function getPageTypes() {
		$pageTypes = array();
		foreach(SiteTree::page_type_classes() as $pageTypeClass) {
			$pageTypes[$pageTypeClass] = _t($pageTypeClass.'.SINGULARNAME', $pageTypeClass);
		}
		asort($pageTypes);
		return $pageTypes;
	}

	public function doSearch($data, $form) {

The parameter $data is not used and could be removed.

The parameter $form is not used and could be removed.

		return $this->getsubtree($this->getRequest());
	}

	/**
	 * @param bool $unlinked
	 * @return ArrayList
	 */
	public function Breadcrumbs($unlinked = false) {
		$items = parent::Breadcrumbs($unlinked);

		if($items->count() > 1) {
			// Specific to the SiteTree admin section, we never show the cms section and current
			// page in the same breadcrumbs block.
			$items->shift();
		}

		return $items;
	}

	/**
	 * Create serialized JSON string with site tree hints data to be injected into
	 * 'data-hints' attribute of root node of jsTree.
	 *
	 * @return string Serialized JSON
	 */
	public function SiteTreeHints() {
		$json = '';

$json is not used, you could remove the assignment.

		$classes = SiteTree::page_type_classes();

	 	$cacheCanCreate = array();
	 	foreach($classes as $class) $cacheCanCreate[$class] = singleton($class)->canCreate();

	 	// Generate basic cache key. Too complex to encompass all variations
	 	$cache = SS_Cache::factory('CMSMain_SiteTreeHints');
	 	$cacheKey = md5(implode('_', array(Member::currentUserID(), implode(',', $cacheCanCreate), implode(',', $classes))));
	 	if($this->getRequest()->getVar('flush')) $cache->clean(Zend_Cache::CLEANING_MODE_ALL);
	 	$json = $cache->load($cacheKey);
	 	if(!$json) {
			$def['Root'] = array();

$def was never initialized. Although not strictly required by PHP, it is generally a good practice to add $def = array(); before regardless.

			$def['Root']['disallowedChildren'] = array();

			// Contains all possible classes to support UI controls listing them all,
			// such as the "add page here" context menu.
			$def['All'] = array();

			// Identify disallows and set globals
			foreach($classes as $class) {
				$obj = singleton($class);
				if($obj instanceof HiddenClass) continue;

				// Name item
				$def['All'][$class] = array(
					'title' => $obj->i18n_singular_name()
				);

				// Check if can be created at the root
				$needsPerm = $obj->stat('need_permission');
				if(
					!$obj->stat('can_be_root')
					|| (!array_key_exists($class, $cacheCanCreate) || !$cacheCanCreate[$class])
					|| ($needsPerm && !$this->can($needsPerm))
				) {
					$def['Root']['disallowedChildren'][] = $class;
				}

				// Hint data specific to the class
				$def[$class] = array();

				$defaultChild = $obj->defaultChild();
				if($defaultChild !== 'Page' && $defaultChild !== null) {
					$def[$class]['defaultChild'] = $defaultChild;
				}

				$defaultParent = $obj->defaultParent();
				if ($defaultParent !== 1 && $defaultParent !== null) {
					$def[$class]['defaultParent'] = $defaultParent;
				}
			}

			$this->extend('updateSiteTreeHints', $def);

			$json = Convert::raw2json($def);
			$cache->save($json, $cacheKey);
		}
		return $json;
	}

	/**
	 * Populates an array of classes in the CMS
	 * which allows the user to change the page type.
	 *
	 * @return SS_List
	 */
	public function PageTypes() {
		$classes = SiteTree::page_type_classes();

		$result = new ArrayList();

		foreach($classes as $class) {
			$instance = singleton($class);

			if($instance instanceof HiddenClass) continue;

			// skip this type if it is restricted
			if($instance->stat('need_permission') && !$this->can(singleton($class)->stat('need_permission'))) continue;

			$addAction = $instance->i18n_singular_name();

			// Get description (convert 'Page' to 'SiteTree' for correct localization lookups)
			$description = _t((($class == 'Page') ? 'SiteTree' : $class) . '.DESCRIPTION');

			if(!$description) {
				$description = $instance->uninherited('description');
			}

			if($class == 'Page' && !$description) {
				$description = singleton('SiteTree')->uninherited('description');
			}

			$result->push(new ArrayData(array(
				'ClassName' => $class,
				'AddAction' => $addAction,
				'Description' => $description,
				// TODO Sprite support
				'IconURL' => $instance->stat('icon'),
				'Title' => singleton($class)->i18n_singular_name(),
			)));
		}

		$result = $result->sort('AddAction');

		return $result;
	}

	/**
	 * Get a database record to be managed by the CMS.
	 *
	 * @param int $id Record ID
	 * @param int $versionID optional Version id of the given record
	 * @return SiteTree
	 */
 	public function getRecord($id, $versionID = null) {
		$treeClass = $this->stat('tree_class');

		if($id instanceof $treeClass) {
			return $id;
		}
		else if($id && is_numeric($id)) {
			if($this->getRequest()->getVar('Version')) {
				$versionID = (int) $this->getRequest()->getVar('Version');
			}

			if($versionID) {

The expression $versionID of type integer|null is loosely compared to true; this is ambiguous if the integer can be zero. You might want to explicitly use !== null instead.

				$record = Versioned::get_version($treeClass, $id, $versionID);
			} else {
				$record = DataObject::get_by_id($treeClass, $id);
			}

			// Then, try getting a record from the live site
			if(!$record) {
				// $record = Versioned::get_one_by_stage($treeClass, "Live", "\"$treeClass\".\"ID\" = $id");
				Versioned::reading_stage('Live');
				singleton($treeClass)->flushCache();

				$record = DataObject::get_by_id($treeClass, $id);
				if($record) Versioned::set_reading_mode('');
			}

			// Then, try getting a deleted record
			if(!$record) {
				$record = Versioned::get_latest_version($treeClass, $id);
			}

			// Don't open a page from a different locale
			/** The record's Locale is saved in database in 2.4, and not related with Session,
			 *  we should not check their locale matches the Translatable::get_current_locale,
			 * 	here as long as we all the HTTPRequest is init with right locale.
			 *	This bit breaks the all FileIFrameField functions if the field is used in CMS
			 *  and its relevent ajax calles, like loading the tree dropdown for TreeSelectorField.
			 */
			/* if($record && SiteTree::has_extension('Translatable') && $record->Locale && $record->Locale != Translatable::get_current_locale()) {
				$record = null;
			}*/

			return $record;

		} else if(substr($id,0,3) == 'new') {
			return $this->getNewItem($id);
		}
	}

	/**
	 * @param int $id
	 * @param FieldList $fields
	 * @return Form
	 */
	public function getEditForm($id = null, $fields = null) {
		if(!$id) $id = $this->currentPageID();

The expression $id of type integer|null is loosely compared to false; this is ambiguous if the integer can be zero. You might want to explicitly use === null instead.

		$form = parent::getEditForm($id);

		// TODO Duplicate record fetching (see parent implementation)
		$record = $this->getRecord($id);
		if($record && !$record->canView()) return Security::permissionFailure($this);

The expression \Security::permissionFailure($this); of type SS_HTTPResponse|null adds the type SS_HTTPResponse to the return on line 599 which is incompatible with the return type documented by CMSMain::getEditForm of type Form.

		if(!$fields) $fields = $form->Fields();
		$actions = $form->Actions();

$actions is not used, you could remove the assignment.

		if($record) {
			$deletedFromStage = $record->getIsDeletedFromStage();

			$fields->push($idField = new HiddenField("ID", false, $id));

false is of type boolean, but the function expects a null|string.

			// Necessary for different subsites
			$fields->push($liveLinkField = new HiddenField("AbsoluteLink", false, $record->AbsoluteLink()));

false is of type boolean, but the function expects a null|string.

			$fields->push($liveLinkField = new HiddenField("LiveLink"));
			$fields->push($stageLinkField = new HiddenField("StageLink"));
			$fields->push(new HiddenField("TreeTitle", false, $record->TreeTitle));

The property TreeTitle does not exist on object<SiteTree>. Since you implemented __get, maybe consider adding a @property annotation.

false is of type boolean, but the function expects a null|string.

			if($record->ID && is_numeric( $record->ID ) ) {
				$liveLink = $record->getAbsoluteLiveLink();
				if($liveLink) $liveLinkField->setValue($liveLink);
				if(!$deletedFromStage) {
					$stageLink = Controller::join_links($record->AbsoluteLink(), '?stage=Stage');
					if($stageLink) $stageLinkField->setValue($stageLink);
				}
			}

			// Added in-line to the form, but plucked into different view by LeftAndMain.Preview.js upon load
			if(in_array('CMSPreviewable', class_implements($record)) && !$fields->fieldByName('SilverStripeNavigator')) {
				$navField = new LiteralField('SilverStripeNavigator', $this->getSilverStripeNavigator());
				$navField->setAllowHTML(true);
				$fields->push($navField);
			}

			// getAllCMSActions can be used to completely redefine the action list
			if($record->hasMethod('getAllCMSActions')) {
				$actions = $record->getAllCMSActions();

The method getAllCMSActions does not exist on object<SiteTree>? Since you implemented __call, maybe consider adding a @method annotation.

			} else {
				$actions = $record->getCMSActions();

				// Find and remove action menus that have no actions.
				if ($actions && $actions->Count()) {
					$tabset = $actions->fieldByName('ActionMenus');
					if ($tabset) {
						foreach ($tabset->getChildren() as $tab) {
							if (!$tab->getChildren()->count()) {
								$tabset->removeByName($tab->getName());
							}
						}
					}
				}
			}

			// Use <button> to allow full jQuery UI styling
			$actionsFlattened = $actions->dataFields();
			if($actionsFlattened) foreach($actionsFlattened as $action) $action->setUseButtonTag(true);

			if($record->hasMethod('getCMSValidator')) {
				$validator = $record->getCMSValidator();

The method getCMSValidator does not exist on object<SiteTree>? Since you implemented __call, maybe consider adding a @method annotation.

$validator is not used, you could remove the assignment.

			} else {
				$validator = new RequiredFields();

$validator is not used, you could remove the assignment.

			}

			// TODO Can't merge $FormAttributes in template at the moment
			$form->addExtraClass('center ' . $this->BaseCSSClasses());
			// Set validation exemptions for specific actions
			$form->setValidationExemptActions(array('restore', 'revert', 'deletefromlive', 'delete', 'unpublish', 'rollback', 'doRollback'));

			// Announce the capability so the frontend can decide whether to allow preview or not.
			if(in_array('CMSPreviewable', class_implements($record))) {
				$form->addExtraClass('cms-previewable');
			}

			if(!$record->canEdit() || $deletedFromStage) {
				$readonlyFields = $form->Fields()->makeReadonly();
				$form->setFields($readonlyFields);
			}

			$this->extend('updateEditForm', $form);
			return $form;
		} else if($id) {
			$form = Form::create( $this, "EditForm", new FieldList(
				new LabelField('PageDoesntExistLabel',_t('CMSMain.PAGENOTEXISTS',"This page doesn't exist"))), new FieldList()
			)->setHTMLID('Form_EditForm');
			return $form;
		}
	}

	/**
	 * @param SS_HTTPRequest $request
	 * @return string HTML
	 */
	public function treeview($request) {

The parameter $request is not used and could be removed.

		return $this->renderWith($this->getTemplatesWithSuffix('_TreeView'));
	}

	/**
	 * @param SS_HTTPRequest $request
	 * @return string HTML
	 */
	public function listview($request) {

The parameter $request is not used and could be removed.

		return $this->renderWith($this->getTemplatesWithSuffix('_ListView'));
	}

	/**
	 * Callback to request the list of page types allowed under a given page instance.
	 * Provides a slower but more precise response over SiteTreeHints
	 *
	 * @param SS_HTTPRequest $request
	 * @return SS_HTTPResponse
	 */
	public function childfilter($request) {
		// Check valid parent specified
		$parentID = $request->requestVar('ParentID');
		$parent = SiteTree::get()->byID($parentID);
		if(!$parent || !$parent->exists()) return $this->httpError(404);

		// Build hints specific to this class
		// Identify disallows and set globals
		$classes = SiteTree::page_type_classes();
		$disallowedChildren = array();
		foreach($classes as $class) {
			$obj = singleton($class);
			if($obj instanceof HiddenClass) continue;

			if(!$obj->canCreate(null, array('Parent' => $parent))) {
				$disallowedChildren[] = $class;
			}
		}

		$this->extend('updateChildFilter', $disallowedChildren, $parentID);
		return $this
			->getResponse()
			->addHeader('Content-Type', 'application/json; charset=utf-8')
			->setBody(Convert::raw2json($disallowedChildren));
	}

	/**
	 * Safely reconstruct a selected filter from a given set of query parameters
	 *
	 * @param array $params Query parameters to use
	 * @return CMSSiteTreeFilter The filter class, or null if none present
	 * @throws InvalidArgumentException if invalid filter class is passed.
	 */
	protected function getQueryFilter($params) {
		if(empty($params['FilterClass'])) return null;
		$filterClass = $params['FilterClass'];
		if(!is_subclass_of($filterClass, 'CMSSiteTreeFilter')) {
			throw new InvalidArgumentException("Invalid filter class passed: {$filterClass}");
		}
		return $filterClass::create($params);
	}

	/**
	 * Returns the pages meet a certain criteria as {@see CMSSiteTreeFilter} or the subpages of a parent page
	 * defaulting to no filter and show all pages in first level.
	 * Doubles as search results, if any search parameters are set through {@link SearchForm()}.
	 *
	 * @param array $params Search filter criteria
	 * @param int $parentID Optional parent node to filter on (can't be combined with other search criteria)
	 * @return SS_List
	 * @throws InvalidArgumentException if invalid filter class is passed.
	 */
	public function getList($params = array(), $parentID = 0) {
		if($filter = $this->getQueryFilter($params)) {
			return $filter->getFilteredPages();
		} else {
			$list = DataList::create($this->stat('tree_class'));
			$parentID = is_numeric($parentID) ? $parentID : 0;
			return $list->filter("ParentID", $parentID);
		}
	}

	public function ListViewForm() {
		$params = $this->getRequest()->requestVar('q');
		$list = $this->getList($params, $parentID = $this->getRequest()->requestVar('ParentID'));
		$gridFieldConfig = GridFieldConfig::create()->addComponents(
			new GridFieldSortableHeader(),
			new GridFieldDataColumns(),
			new GridFieldPaginator(self::config()->page_length)
		);
		if($parentID){
			$gridFieldConfig->addComponent(
				GridFieldLevelup::create($parentID)
					->setLinkSpec('?ParentID=%d&view=list')
					->setAttributes(array('data-pjax' => 'ListViewForm,Breadcrumbs'))
			);
		}
		$gridField = new GridField('Page','Pages', $list, $gridFieldConfig);
		$columns = $gridField->getConfig()->getComponentByType('GridFieldDataColumns');

		// Don't allow navigating into children nodes on filtered lists
		$fields = array(
			'getTreeTitle' => _t('SiteTree.PAGETITLE', 'Page Title'),
			'singular_name' => _t('SiteTree.PAGETYPE'),
			'LastEdited' => _t('SiteTree.LASTUPDATED', 'Last Updated'),
		);
		$gridField->getConfig()->getComponentByType('GridFieldSortableHeader')->setFieldSorting(array('getTreeTitle' => 'Title'));

It seems like you code against a concrete implementation and not the interface GridFieldComponent as the method setFieldSorting() does only exist in the following implementations of said interface: GridFieldSortableHeader.

		$gridField->getState()->ParentID = $parentID;

		if(!$params) {
			$fields = array_merge(array('listChildrenLink' => ''), $fields);
		}

		$columns->setDisplayFields($fields);
		$columns->setFieldCasting(array(
			'Created' => 'SS_Datetime->Ago',
			'LastEdited' => 'SS_Datetime->FormatFromSettings',
			'getTreeTitle' => 'HTMLText'
		));

		$controller = $this;
		$columns->setFieldFormatting(array(
			'listChildrenLink' => function($value, &$item) use($controller) {
				$num = $item ? $item->numChildren() : null;
				if($num) {
					return sprintf(
						'<a class="cms-panel-link list-children-link" data-pjax-target="ListViewForm,Breadcrumbs" href="%s">%s</a>',
						Controller::join_links(
							$controller->Link(),
							sprintf("?ParentID=%d&view=list", (int)$item->ID)
						),
						$num
					);
				}
			},
			'getTreeTitle' => function($value, &$item) use($controller) {
				return sprintf(
					'<a class="action-detail" href="%s">%s</a>',
					Controller::join_links(
						singleton('CMSPageEditController')->Link('show'),
						(int)$item->ID
					),
					$item->TreeTitle // returns HTML, does its own escaping
				);
			}
		));

		$negotiator = $this->getResponseNegotiator();
		$listview = Form::create(
			$this,
			'ListViewForm',
			new FieldList($gridField),
			new FieldList()
		)->setHTMLID('Form_ListViewForm');
		$listview->setAttribute('data-pjax-fragment', 'ListViewForm');
		$listview->setValidationResponseCallback(function() use ($negotiator, $listview) {

This code seems to be duplicated across your project.

			$request = $this->getRequest();
			if($request->isAjax() && $negotiator) {
				$listview->setupFormErrors();
				$result = $listview->forTemplate();

				return $negotiator->respond($request, array(
					'CurrentForm' => function() use($result) {
						return $result;
					}
				));
			}
		});

		$this->extend('updateListView', $listview);

		$listview->disableSecurityToken();
		return $listview;
	}

	public function currentPageID() {
		$id = parent::currentPageID();

		$this->extend('updateCurrentPageID', $id);

		return $id;
	}

	//------------------------------------------------------------------------------------------//
	// Data saving handlers

	/**
	 * Save and Publish page handler
	 */
	public function save($data, $form) {
		$className = $this->stat('tree_class');

		// Existing or new record?
		$id = $data['ID'];
		if(substr($id,0,3) != 'new') {
			$record = DataObject::get_by_id($className, $id);
			if($record && !$record->canEdit()) return Security::permissionFailure($this);
			if(!$record || !$record->ID) throw new SS_HTTPResponse_Exception("Bad record ID #$id", 404);
		} else {
			if(!singleton($this->stat('tree_class'))->canCreate()) return Security::permissionFailure($this);
			$record = $this->getNewItem($id, false);
		}

		// TODO Coupling to SiteTree
		$record->HasBrokenLink = 0;
		$record->HasBrokenFile = 0;

		if (!$record->ObsoleteClassName) $record->writeWithoutVersion();

		// Update the class instance if necessary
		if(isset($data['ClassName']) && $data['ClassName'] != $record->ClassName) {
			$newClassName = $record->ClassName;
			// The records originally saved attribute was overwritten by $form->saveInto($record) before.
			// This is necessary for newClassInstance() to work as expected, and trigger change detection
			// on the ClassName attribute
			$record->setClassName($data['ClassName']);
			// Replace $record with a new instance
			$record = $record->newClassInstance($newClassName);
		}

		// save form data into record
		$form->saveInto($record);
		$record->write();

		// If the 'Save & Publish' button was clicked, also publish the page
		if (isset($data['publish']) && $data['publish'] == 1) {
			$record->doPublish();
		}

		return $this->getResponseNegotiator()->respond($this->getRequest());
	}

	/**
	 * @uses LeftAndMainExtension->augmentNewSiteTreeItem()
	 */
	public function getNewItem($id, $setID = true) {
		$parentClass = $this->stat('tree_class');
		list($dummy, $className, $parentID, $suffix) = array_pad(explode('-',$id),4,null);

The assignment to $dummy is unused. Consider omitting it like so list($first,,$third).

		if(!is_subclass_of($className, $parentClass) && strcasecmp($className, $parentClass) != 0) {

Due to PHP Bug #53727, is_subclass_of might return inconsistent results on some PHP versions if $parentClass can be an interface. If so, you could instead use ReflectionClass::implementsInterface.

			$response = Security::permissionFailure($this);
			if (!$response) {
				$response = $this->getResponse();
			}
			throw new SS_HTTPResponse_Exception($response);
		}

		$newItem = new $className();

		if( !$suffix ) {
			$sessionTag = "NewItems." . $parentID . "." . $className;
			if(Session::get($sessionTag)) {
				$suffix = '-' . Session::get($sessionTag);
				Session::set($sessionTag, Session::get($sessionTag) + 1);
			}
			else
				Session::set($sessionTag, 1);

				$id = $id . $suffix;
		}

		$newItem->Title = _t(
			'CMSMain.NEWPAGE',
			"New {pagetype}",'followed by a page type title',
			array('pagetype' => singleton($className)->i18n_singular_name())

array('pagetype' => singleton($className)->i18n_singular_name()) is of type array<string,?,{"pagetype":"?"}>, but the function expects a string.

		);
		$newItem->ClassName = $className;
		$newItem->ParentID = $parentID;

		// DataObject::fieldExists only checks the current class, not the hierarchy
		// This allows the CMS to set the correct sort value
		if($newItem->castingHelper('Sort')) {
			$newItem->Sort = DB::prepared_query('SELECT MAX("Sort") FROM "SiteTree" WHERE "ParentID" = ?', array($parentID))->value() + 1;
		}

		if($setID) $newItem->ID = $id;

		# Some modules like subsites add extra fields that need to be set when the new item is created
		$this->extend('augmentNewSiteTreeItem', $newItem);

		return $newItem;
	}

	/**
	 * Delete the page from live. This means a page in draft mode might still exist.
	 *
	 * @see delete()
	 */
	public function deletefromlive($data, $form) {

The parameter $form is not used and could be removed.

		Versioned::reading_stage('Live');

		/** @var SiteTree $record */
		$record = DataObject::get_by_id("SiteTree", $data['ID']);
		if($record && !($record->canDelete() && $record->canUnpublish())) {

The method canUnpublish does not exist on object<SiteTree>? Since you implemented __call, maybe consider adding a @method annotation.

			return Security::permissionFailure($this);
		}

		$descendantsRemoved = 0;
		$recordTitle = $record->Title;

		// before deleting the records, get the descendants of this tree
		if($record) {
			$descendantIDs = $record->getDescendantIDList();

The method getDescendantIDList does not exist on object<SiteTree>? Since you implemented __call, maybe consider adding a @method annotation.

			// then delete them from the live site too
			$descendantsRemoved = 0;
			foreach( $descendantIDs as $descID )
				/** @var SiteTree $descendant */
				if( $descendant = DataObject::get_by_id('SiteTree', $descID) ) {
					$descendant->doUnpublish();
					$descendantsRemoved++;
				}

			// delete the record
			$record->doUnpublish();
		}

		Versioned::reading_stage('Stage');

		if(isset($descendantsRemoved)) {
			$descRemoved = ' ' . _t(
				'CMSMain.DESCREMOVED',
				'and {count} descendants',
				array('count' => $descendantsRemoved)

array('count' => $descendantsRemoved) is of type array<string,integer,{"count":"integer"}>, but the function expects a string.

			);
		} else {
			$descRemoved = '';
		}

		$this->getResponse()->addHeader(
			'X-Status',
			rawurlencode(
				_t(
					'CMSMain.REMOVED',
					'Deleted \'{title}\'{description} from live site',
					array('title' => $recordTitle, 'description' => $descRemoved)

array('title' => $recordTitle, 'description' => $descRemoved) is of type array<string,string,{"title":"string","description":"string"}>, but the function expects a string.

				)
			)
		);

		// Even if the record has been deleted from stage and live, it can be viewed in "archive mode"
		return $this->getResponseNegotiator()->respond($this->getRequest());
	}

	/**
	 * Actually perform the publication step
	 */
	public function performPublish($record) {
		if($record && !$record->canPublish()) return Security::permissionFailure($this);

		$record->doPublish();
	}

	/**
 	 * Reverts a page by publishing it to live.
 	 * Use {@link restorepage()} if you want to restore a page
 	 * which was deleted from draft without publishing.
 	 *
 	 * @uses SiteTree->doRevertToLive()
	 */
	public function revert($data, $form) {

The parameter $form is not used and could be removed.

		if(!isset($data['ID'])) return new SS_HTTPResponse("Please pass an ID in the form content", 400);

		$id = (int) $data['ID'];
		$restoredPage = Versioned::get_latest_version("SiteTree", $id);
		if(!$restoredPage) 	return new SS_HTTPResponse("SiteTree #$id not found", 400);

		$record = Versioned::get_one_by_stage('SiteTree', 'Live', array(

array('"SiteTree_Live"."ID"' => $id) is of type array<string,integer,{"\"SiteTree_Live\".\"ID\"":"integer"}>, but the function expects a string.

			'"SiteTree_Live"."ID"' => $id
		));

		// a user can restore a page without publication rights, as it just adds a new draft state
		// (this action should just be available when page has been "deleted from draft")
		if($record && !$record->canEdit()) return Security::permissionFailure($this);
		if(!$record || !$record->ID) throw new SS_HTTPResponse_Exception("Bad record ID #$id", 404);

		$record->doRevertToLive();

		$this->getResponse()->addHeader(
			'X-Status',
			rawurlencode(_t(
				'CMSMain.RESTORED',
				"Restored '{title}' successfully",
				'Param %s is a title',
				array('title' => $record->Title)

array('title' => $record->Title) is of type array<string,?,{"title":"?"}>, but the function expects a string.

			))
		);

		return $this->getResponseNegotiator()->respond($this->getRequest());
	}

	/**
	 * Delete the current page from draft stage.
	 * @see deletefromlive()
	 */
	public function delete($data, $form) {
		Deprecation::notice('4.0', 'Delete from stage is deprecated. Use archive instead');
		$id = $data['ID'];
		$record = DataObject::get_by_id("SiteTree", $id);
		if($record && !$record->canDelete()) return Security::permissionFailure();
		if(!$record || !$record->ID) throw new SS_HTTPResponse_Exception("Bad record ID #$id", 404);

		// Delete record
		$record->delete();

		$this->getResponse()->addHeader(
			'X-Status',
			rawurlencode(sprintf(_t('CMSMain.REMOVEDPAGEFROMDRAFT',"Removed '%s' from the draft site"), $record->Title))
		);

		// Even if the record has been deleted from stage and live, it can be viewed in "archive mode"
		return $this->getResponseNegotiator()->respond($this->getRequest());
	}

	/**
	 * Delete this page from both live and stage
	 *
	 * @param array $data
	 * @param Form $form
	 */
	public function archive($data, $form) {

The parameter $form is not used and could be removed.

		$id = $data['ID'];
		$record = DataObject::get_by_id("SiteTree", $id);
		if(!$record || !$record->exists()) {
			throw new SS_HTTPResponse_Exception("Bad record ID #$id", 404);
		}
		if(!$record->canArchive()) {
			return Security::permissionFailure();
		}

		// Archive record
		$record->doArchive();

		$this->getResponse()->addHeader(
			'X-Status',
			rawurlencode(sprintf(_t('CMSMain.ARCHIVEDPAGE',"Archived page '%s'"), $record->Title))
		);

		// Even if the record has been deleted from stage and live, it can be viewed in "archive mode"
		return $this->getResponseNegotiator()->respond($this->getRequest());
	}

	public function publish($data, $form) {
		$data['publish'] = '1';

		return $this->save($data, $form);
	}

	public function unpublish($data, $form) {

The parameter $form is not used and could be removed.

		$className = $this->stat('tree_class');
		/** @var SiteTree $record */
		$record = DataObject::get_by_id($className, $data['ID']);

		if($record && !$record->canUnpublish()) {

The method canUnpublish does not exist on object<SiteTree>? Since you implemented __call, maybe consider adding a @method annotation.

			return Security::permissionFailure($this);
		}
		if(!$record || !$record->ID) {

This code seems to be duplicated across your project.

			throw new SS_HTTPResponse_Exception("Bad record ID #" . (int)$data['ID'], 404);
		}

		$record->doUnpublish();

		$this->getResponse()->addHeader(
			'X-Status',
			rawurlencode(_t('CMSMain.REMOVEDPAGE',"Removed '{title}' from the published site", array('title' => $record->Title)))

array('title' => $record->Title) is of type array<string,string,{"title":"string"}>, but the function expects a string.

		);

		return $this->getResponseNegotiator()->respond($this->getRequest());
	}

	/**
	 * @return array
	 */
	public function rollback() {
		return $this->doRollback(array(
			'ID' => $this->currentPageID(),
			'Version' => $this->getRequest()->param('VersionID')
		), null);
	}

	/**
	 * Rolls a site back to a given version ID
	 *
	 * @param array
	 * @param Form
	 *
	 * @return html
	 */
	public function doRollback($data, $form) {

The parameter $form is not used and could be removed.

		$this->extend('onBeforeRollback', $data['ID']);

		$id = (isset($data['ID'])) ? (int) $data['ID'] : null;
		$version = (isset($data['Version'])) ? (int) $data['Version'] : null;

		$record = DataObject::get_by_id($this->stat('tree_class'), $id);
		if($record && !$record->canEdit()) return Security::permissionFailure($this);

		if($version) {

The expression $version of type integer|null is loosely compared to true; this is ambiguous if the integer can be zero. You might want to explicitly use !== null instead.

			$record->doRollbackTo($version);
			$message = _t(
				'CMSMain.ROLLEDBACKVERSIONv2',
				"Rolled back to version #%d.",
				array('version' => $data['Version'])

array('version' => $data['Version']) is of type array<string,?,{"version":"?"}>, but the function expects a string.

			);
		} else {
			$record->doRollbackTo('Live');
			$message = _t(
				'CMSMain.ROLLEDBACKPUBv2',"Rolled back to published version."
			);
		}

		$this->getResponse()->addHeader('X-Status', rawurlencode($message));

		// Can be used in different contexts: In normal page edit view, in which case the redirect won't have any effect.
		// Or in history view, in which case a revert causes the CMS to re-load the edit view.
		// The X-Pjax header forces a "full" content refresh on redirect.
		$url = Controller::join_links(singleton('CMSPageEditController')->Link('show'), $record->ID);
		$this->getResponse()->addHeader('X-ControllerURL', $url);
		$this->getRequest()->addHeader('X-Pjax', 'Content');
		$this->getResponse()->addHeader('X-Pjax', 'Content');

		return $this->getResponseNegotiator()->respond($this->getRequest());
	}

	/**
	 * Batch Actions Handler
	 */
	public function batchactions() {
		return new CMSBatchActionHandler($this, 'batchactions');
	}

	public function BatchActionParameters() {
		$batchActions = CMSBatchActionHandler::config()->batch_actions;

		$forms = array();
		foreach($batchActions as $urlSegment => $batchAction) {
			$SNG_action = singleton($batchAction);
			if ($SNG_action->canView() && $fieldset = $SNG_action->getParameterFields()) {
				$formHtml = '';
				foreach($fieldset as $field) {
					$formHtml .= $field->Field();
				}
				$forms[$urlSegment] = $formHtml;
			}
		}
		$pageHtml = '';
		foreach($forms as $urlSegment => $html) {
			$pageHtml .= "<div class=\"params\" id=\"BatchActionParameters_$urlSegment\">$html</div>\n\n";
		}
		return new LiteralField("BatchActionParameters", '<div id="BatchActionParameters" style="display:none">'.$pageHtml.'</div>');
	}
	/**
	 * Returns a list of batch actions
	 */
	public function BatchActionList() {
		return $this->batchactions()->batchActionList();
	}

	public function buildbrokenlinks($request) {
		// Protect against CSRF on destructive action
		if(!SecurityToken::inst()->checkRequest($request)) return $this->httpError(400);

		increase_time_limit_to();
		increase_memory_limit_to();

		if($this->urlParams['ID']) {
			$newPageSet[] = DataObject::get_by_id("Page", $this->urlParams['ID']);

$newPageSet was never initialized. Although not strictly required by PHP, it is generally a good practice to add $newPageSet = array(); before regardless.

		} else {
			$pages = DataObject::get("Page");
			foreach($pages as $page) $newPageSet[] = $page;

$newPageSet was never initialized. Although not strictly required by PHP, it is generally a good practice to add $newPageSet = array(); before regardless.

			$pages = null;

$pages is not used, you could remove the assignment.

		}

		$content = new HtmlEditorField('Content');
		$download = new HtmlEditorField('Download');

		foreach($newPageSet as $i => $page) {
			$page->HasBrokenLink = 0;
			$page->HasBrokenFile = 0;

			$content->setValue($page->Content);
			$content->saveInto($page);

			$download->setValue($page->Download);
			$download->saveInto($page);

			echo "<li>$page->Title (link:$page->HasBrokenLink, file:$page->HasBrokenFile)";

			$page->writeWithoutVersion();
			$page->destroy();
			$newPageSet[$i] = null;

The variable $newPageSet does not seem to be defined for all execution paths leading up to this point.

		}
	}

	public function publishall($request) {
		if(!Permission::check('ADMIN')) return Security::permissionFailure($this);

		increase_time_limit_to();
		increase_memory_limit_to();

		$response = "";

		if(isset($this->requestParams['confirm'])) {
			// Protect against CSRF on destructive action
			if(!SecurityToken::inst()->checkRequest($request)) return $this->httpError(400);

			$start = 0;
			$pages = DataObject::get("SiteTree", "", "", "", "$start,30");
			$count = 0;
			while($pages) {
				foreach($pages as $page) {
					if($page && !$page->canPublish()) return Security::permissionFailure($this);

					$page->doPublish();
					$page->destroy();
					unset($page);
					$count++;
					$response .= "<li>$count</li>";
				}
				if($pages->Count() > 29) {
					$start += 30;
					$pages = DataObject::get("SiteTree", "", "", "", "$start,30");
				} else {
					break;
				}
			}
			$response .= _t('CMSMain.PUBPAGES',"Done: Published {count} pages", array('count' => $count));

array('count' => $count) is of type array<string,integer,{"count":"integer"}>, but the function expects a string.

		} else {
			$token = SecurityToken::inst();
			$fields = new FieldList();
			$token->updateFieldSet($fields);
			$tokenField = $fields->First();
			$tokenHtml = ($tokenField) ? $tokenField->FieldHolder() : '';
			$response .= '<h1>' . _t('CMSMain.PUBALLFUN','"Publish All" functionality') . '</h1>
				<p>' . _t('CMSMain.PUBALLFUN2', 'Pressing this button will do the equivalent of going to every page and pressing "publish".  It\'s
				intended to be used after there have been massive edits of the content, such as when the site was
				first built.') . '</p>
				<form method="post" action="publishall">
					<input type="submit" name="confirm" value="'
					. _t('CMSMain.PUBALLCONFIRM',"Please publish every page in the site, copying content stage to live",'Confirmation button') .'" />'
					. $tokenHtml .
				'</form>';
		}

		return $response;
	}

	/**
	 * Restore a completely deleted page from the SiteTree_versions table.
	 */
	public function restore($data, $form) {

The parameter $form is not used and could be removed.

		if(!isset($data['ID']) || !is_numeric($data['ID'])) {
			return new SS_HTTPResponse("Please pass an ID in the form content", 400);
		}

		$id = (int)$data['ID'];
		$restoredPage = Versioned::get_latest_version("SiteTree", $id);
		if(!$restoredPage) 	return new SS_HTTPResponse("SiteTree #$id not found", 400);

		$restoredPage = $restoredPage->doRestoreToStage();

		$this->getResponse()->addHeader(
			'X-Status',
			rawurlencode(_t(
				'CMSMain.RESTORED',
				"Restored '{title}' successfully",
				array('title' => $restoredPage->Title)

array('title' => $restoredPage->Title) is of type array<string,?,{"title":"?"}>, but the function expects a string.

			))
		);

		return $this->getResponseNegotiator()->respond($this->getRequest());
	}

	public function duplicate($request) {
		// Protect against CSRF on destructive action
		if(!SecurityToken::inst()->checkRequest($request)) return $this->httpError(400);

		if(($id = $this->urlParams['ID']) && is_numeric($id)) {
			$page = DataObject::get_by_id("SiteTree", $id);
			if($page && (!$page->canEdit() || !$page->canCreate(null, array('Parent' => $page->Parent())))) {

The method Parent() does not exist on DataObject. Did you maybe mean parentClass()?

This code seems to be duplicated across your project.

				return Security::permissionFailure($this);
			}
			if(!$page || !$page->ID) throw new SS_HTTPResponse_Exception("Bad record ID #$id", 404);

			$newPage = $page->duplicate();

			// ParentID can be hard-set in the URL.  This is useful for pages with multiple parents
			if(isset($_GET['parentID']) && is_numeric($_GET['parentID'])) {
				$newPage->ParentID = $_GET['parentID'];
				$newPage->write();
			}

			$this->getResponse()->addHeader(
				'X-Status',
				rawurlencode(_t(
					'CMSMain.DUPLICATED',
					"Duplicated '{title}' successfully",
					array('title' => $newPage->Title)

array('title' => $newPage->Title) is of type array<string,?,{"title":"?"}>, but the function expects a string.

				))
			);
			$url = Controller::join_links(singleton('CMSPageEditController')->Link('show'), $newPage->ID);
			$this->getResponse()->addHeader('X-ControllerURL', $url);
			$this->getRequest()->addHeader('X-Pjax', 'Content');
			$this->getResponse()->addHeader('X-Pjax', 'Content');

			return $this->getResponseNegotiator()->respond($this->getRequest());
		} else {
			return new SS_HTTPResponse("CMSMain::duplicate() Bad ID: '$id'", 400);
		}
	}

	public function duplicatewithchildren($request) {
		// Protect against CSRF on destructive action
		if(!SecurityToken::inst()->checkRequest($request)) return $this->httpError(400);
		increase_time_limit_to();
		if(($id = $this->urlParams['ID']) && is_numeric($id)) {
			$page = DataObject::get_by_id("SiteTree", $id);
			if($page && (!$page->canEdit() || !$page->canCreate(null, array('Parent' => $page->Parent())))) {

The method Parent() does not exist on DataObject. Did you maybe mean parentClass()?

This code seems to be duplicated across your project.

				return Security::permissionFailure($this);
			}
			if(!$page || !$page->ID) throw new SS_HTTPResponse_Exception("Bad record ID #$id", 404);

			$newPage = $page->duplicateWithChildren();

			$this->getResponse()->addHeader(
				'X-Status',
				rawurlencode(_t(
					'CMSMain.DUPLICATEDWITHCHILDREN',
					"Duplicated '{title}' and children successfully",
					array('title' => $newPage->Title)

array('title' => $newPage->Title) is of type array<string,?,{"title":"?"}>, but the function expects a string.

				))
			);
			$url = Controller::join_links(singleton('CMSPageEditController')->Link('show'), $newPage->ID);
			$this->getResponse()->addHeader('X-ControllerURL', $url);
			$this->getRequest()->addHeader('X-Pjax', 'Content');
			$this->getResponse()->addHeader('X-Pjax', 'Content');

			return $this->getResponseNegotiator()->respond($this->getRequest());
		} else {
			return new SS_HTTPResponse("CMSMain::duplicatewithchildren() Bad ID: '$id'", 400);
		}
	}

	public function providePermissions() {
		$title = _t("CMSPagesController.MENUTITLE", LeftAndMain::menu_title_for_class('CMSPagesController'));
		return array(
			"CMS_ACCESS_CMSMain" => array(
				'name' => _t('CMSMain.ACCESS', "Access to '{title}' section", array('title' => $title)),

array('title' => $title) is of type array<string,string,{"title":"string"}>, but the function expects a string.

				'category' => _t('Permission.CMS_ACCESS_CATEGORY', 'CMS Access'),
				'help' => _t(
					'CMSMain.ACCESS_HELP',
					'Allow viewing of the section containing page tree and content. View and edit permissions can be handled through page specific dropdowns, as well as the separate "Content permissions".'
				),
				'sort' => -99 // below "CMS_ACCESS_LeftAndMain", but above everything else
			)
		);
	}

}