BaseElement - Code Metrics - Inspection of "Virtual updates" - dnadesign/silverstripe-elemental - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#54)

by John

created 2016-10-02 22:10 UTC

BaseElement F

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	402
Duplicated Lines	5.72 %

Coupling/Cohesion

Components	3
Dependencies	24

Importance

Changes

Metric	Value
wmc	53
lcom	3
cbo	24
dl	23
loc	402
rs	2.1524
c	0
b	0
f	0

18 Methods

Rating	Name	Duplication	Size	Complexity
C	getCMSFields()	0	79	13
A	isEndofLine()	0	10	2
A	onBeforeWrite()	0	14	4
C	onBeforeDelete()	0	52	10
A	i18n_singular_name()	0	4	1
A	getElementType()	0	4	1
A	getTitle()	12	12	3
A	getCMSTitle()	11	11	3
A	ControllerTop()	0	4	1
A	getPage()	0	14	3
A	forTemplate()	0	4	1
A	getEditLink()	0	8	1
A	onBeforeVersionedPublish()	0	4	1
B	all_allowed_elements()	0	28	5
A	getDefaultSearchContext()	0	16	1
A	setVirtualOwner()	0	3	1
A	getVirtualLinkedElements()	0	3	1
A	getPublishedVirtualLinkedElements()	0	7	1

How to fix Duplicated Code Complexity

Duplicated Code

Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.

Common duplication problems, and corresponding solutions are:

If you have the same expression in different places: Extract expression to a method
If you have the same method in different sub-classes: Extract method, and pull up field to the parent class
If you have the same code in unrelated classes: Consider extracting the code to a new class, and injecting that class

Complex Class

Tip: Before tackling complexity, make sure that you eliminate any duplication first. This often can reduce the size of classes significantly.

Complex classes like BaseElement often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

While breaking up the class, it is a good idea to analyze how other classes use BaseElement, and based on these observations, apply Extract Interface, too.

<?php

/**
 * @package elemental
 */
class BaseElement extends Widget
namespace YourVendor;

class YourClass { }
{
    /**
     * @var array $db
     */
    private static $db = array(

        'ExtraClass' => 'Varchar(255)',
        'HideTitle' => 'Boolean'
    );

    /**
     * @var array $has_one
     */
    private static $has_one = array(

        'List' => 'ElementList' // optional.
    );

    /**
     * @var array $has_many
     */
    private static $has_many = array(

        'VirtualClones' => 'ElementVirtualLinked'
    );

    /**
     * @var string
     */
    private static $title = "Content Block";


    /**
     * @var string
     */
    private static $singular_name = 'Content Block';


    /**
     * @var array
     */
    private static $summary_fields = array(

        'ID' => 'ID',
        'Title' => 'Title',
        'ElementType' => 'Type'
    );

    /**
     * @var array
     */
    private static $searchable_fields = array(

        'ID' => array(
            'field' => 'NumericField'
        ),
        'Title',
        'LastEdited',
        'ClassName'
    );

    /**
     * @var boolean
     */
    private static $enable_title_in_template = false;


    /**
     * @var Object
     * The virtual owner VirtualLinkedElement
     */
    public $virtualOwner;


    public function getCMSFields()

    {
        $fields = $this->scaffoldFormFields(array(
            'includeRelations' => ($this->ID > 0),
            'tabbed' => true,
            'ajaxSafe' => true
        ));

        $fields->insertAfter(new ReadonlyField('ClassNameTranslated', _t('BaseElement.TYPE', 'Type'), $this->i18n_singular_name()), 'Title');
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
        $fields->removeByName('ListID');
        $fields->removeByName('ParentID');
        $fields->removeByName('Sort');
        $fields->removeByName('ExtraClass');

        if (!$this->config()->enable_title_in_template) {
            $fields->removeByName('HideTitle');
            $title = $fields->fieldByName('Root.Main.Title');

            if ($title) {
                $title->setRightTitle('For reference only. Does not appear in the template.');
            }
        }

        $fields->addFieldToTab('Root.Settings', new TextField('ExtraClass', 'Extra CSS Classes to add'));

        if (!is_a($this, 'ElementList')) {
            $lists = ElementList::get()->filter('ParentID', $this->ParentID);
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}

            if ($lists->exists()) {
                $fields->addFieldToTab('Root.Settings',
                    $move = new DropdownField('MoveToListID', 'Move this to another list', $lists->map('ID', 'CMSTitle'), '')
                );

                $move->setEmptyString('Select a list..');
                $move->setHasEmptyDefault(true);
            }
        }


        if($virtual = $fields->dataFieldByName('VirtualClones')) {
            if($this->Parent() && $this->Parent()->exists() && $this->Parent()->getOwnerPage() && $this->Parent()->getOwnerPage()->exists()) {

                $tab = $fields->findOrMakeTab('Root.VirtualClones');
                $tab->setTitle(_t('BaseElement.VIRTUALTABTITLE', 'Linked To'));

                $tab->push(new LiteralField('DisplaysOnPage', sprintf(
                    "<p>The original content block appears on <a href='%s'>%s</a></p>",
                    $this->Parent()->getOwnerPage()->Link(),

                    $this->Parent()->getOwnerPage()->MenuTitle

                )));

                $virtual->setConfig(new GridFieldConfig_Base());

                $virtual

                    ->setTitle(_t('BaseElement.OTHERPAGES', 'Other pages'))
                    ->getConfig()
                        ->removeComponentsByType('GridFieldAddExistingAutocompleter')
                        ->removeComponentsByType('GridFieldAddNewButton')
                        ->removeComponentsByType('GridFieldDeleteAction')
                        ->removeComponentsByType('GridFieldDetailForm')
                        ->addComponent(new ElementalGridFieldDeleteAction());

                $virtual->getConfig()

                    ->getComponentByType('GridFieldDataColumns')
                    ->setDisplayFields(array(
                        'getPage.Title' => 'Title',
                        'getPage.Link' => 'Link'
                    ));
            }
        }

        $this->extend('updateCMSFields', $fields);

        if ($this->IsInDB()) {
            if ($this->isEndofLine('BaseElement') && $this->hasExtension('VersionViewerDataObject')) {
                $fields = $this->addVersionViewer($fields, $this);
class ParentClass {
    private $data = array();

    public function __call($method, array $args) {
        if (0 === strpos($method, 'get')) {
            return $this->data[strtolower(substr($method, 3))];
        }

        throw new \LogicException(sprintf('Unsupported method: %s', $method));
    }
}

/**
 * If this class knows which fields exist, you can specify the methods here:
 *
 * @method string getName()
 */
class SomeClass extends ParentClass { }
            }
        }

        return $fields;
    }

    /**
     * Version viewer must only be added at if this is the final getCMSFields for a class.
     * in order to avoid having to rename all fields from eg Root.Main to Root.Current.Main
     * To do this we test if getCMSFields is from the current class
     */
    public function isEndofLine($className)
    {
        $methodFromClass = ClassInfo::has_method_from(
            $this->ClassName, 'getCMSFields', $className
        );

        if($methodFromClass) {
            return true;
        }
    }


    public function onBeforeWrite()
    {
        parent::onBeforeWrite();

        if (!$this->Sort) {
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}
            $parentID = ($this->ParentID) ? $this->ParentID : 0;
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}

            $this->Sort = DB::query("SELECT MAX(\"Sort\") + 1 FROM \"Widget\" WHERE \"ParentID\" = $parentID")->value();
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}
        }

        if ($this->MoveToListID) {
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}
            $this->ListID = $this->MoveToListID;
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}
        }
    }

    /**
     * Ensure that if there are elements that are virtualised from this element
     * that we move the original element to replace one of the virtual elements
     * But only if it's a delete not an unpublish
     */
    public function onBeforeDelete() {
        parent::onBeforeDelete();

        if(Versioned::get_reading_mode() == 'Stage.Stage') {
            $firstVirtual = false;
            $allVirtual = $this->getVirtualLinkedElements();
            if ($this->getPublishedVirtualLinkedElements()->Count() > 0) {
                // choose the first one
                $firstVirtual = $this->getPublishedVirtualLinkedElements()->First();
                $wasPublished = true;
            } else if ($allVirtual->Count() > 0) {
                // choose the first one
                $firstVirtual = $this->getVirtualLinkedElements()->First();
                $wasPublished = false;
            }
            if ($firstVirtual) {
                $origParentID = $this->ParentID;
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}
                $origSort = $this->Sort;
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}

                $clone = $this->duplicate(false);

                // set clones values to first virtual's values
                $clone->ParentID = $firstVirtual->ParentID;
                $clone->Sort = $firstVirtual->Sort;

                $clone->write();
                if ($wasPublished) {
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
                    $clone->doPublish();
                    $firstVirtual->doUnpublish();
                }

                // clone has a new ID, so need to repoint
                // all the other virtual elements
                foreach($allVirtual as $virtual) {
                    if ($virtual->ID == $firstVirtual->ID) {
                        continue;
                    }
                    $pub = false;
                    if ($virtual->isPublished()) {
                        $pub = true;
                    }
                    $virtual->LinkedElementID = $clone->ID;
                    $virtual->write();
                    if ($pub) {
                        $virtual->doPublish();
                    }
                }

                $firstVirtual->delete();
            }
        }
    }

    /**
     * @return string
     */
    public function i18n_singular_name()
    {
        return _t(__CLASS__, $this->config()->title);
    }

    /**
     * @return string
     */
    public function getElementType()
    {
        return $this->i18n_singular_name();
    }

    /**
     * @return string
     */
    public function getTitle()

    {
        if ($title = $this->getField('Title')) {
            return $title;
        } else {
            if (!$this->isInDb()) {
                return;
            }

            return $this->config()->title;
        }
    }

    /**
     * @return string
     */
    public function getCMSTitle()

    {
        if ($title = $this->getField('Title')) {
            return $this->config()->title . ': ' . $title;
        } else {
            if (!$this->isInDb()) {
                return;
            }
            return $this->config()->title;
        }
    }

    public function ControllerTop()
    {
        return Controller::curr();
    }

    public function getPage()

    {
        if ($this->virtualOwner) {
            return $this->virtualOwner->getPage();
        }

        $area = $this->Parent();


        if ($area instanceof ElementalArea) {
            return $area->getOwnerPage();
        }

        return null;
    }

    /**
     * Override the {@link Widget::forTemplate()} method so that holders are not rendered twice. The controller should
     * render with widget inside the
     *
     * @return HTML

     */
    public function forTemplate($holder = true)
    {
        return $this->renderWith($this->class);
    }

    /**
     * @return string
     */
    public function getEditLink() {
        return Controller::join_links(
            Director::absoluteBaseURL(),
            'admin/elemental/BaseElement/EditForm/field/BaseElement/item',
            $this->ID,
            'edit'
        );
    }

    public function onBeforeVersionedPublish()
    {

    }

		public static function all_allowed_elements() {
        $classes = array();

        // get all dataobject with the elemental extension
        foreach(ClassInfo::subclassesFor('DataObject') as $className) {
$collection = json_decode($data, true);
if ( ! is_array($collection)) {
    throw new \RuntimeException('$collection must be an array.');
}

foreach ($collection as $item) { /** ... */ }
            if(Object::has_extension($className, 'ElementPageExtension')) {
               $classes[] = $className;
            }
        }

        // get all allowd_elements for these classes
        $allowed = array();
        foreach($classes as $className) {
            $allowed = array_merge($allowed, Config::inst()->get($className, 'allowed_elements'));
        }

       // $allowed[] = 'ElementVirtualLinked';

        $allowed = array_unique($allowed);

        $elements = array();
        foreach($allowed as $className) {
            $elements[$className] = _t($className, Config::inst()->get($className, 'title'));
        }

        asort($elements);

        return $elements;
    }

    public function getDefaultSearchContext()
    {
        $fields = $this->scaffoldSearchFields();

        $elements = BaseElement::all_allowed_elements();

        $fields->push(DropdownField::create('ClassName', 'Element Type', $elements)
            ->setEmptyString('All types'));
        $filters = $this->owner->defaultSearchFilters();
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}

        return new SearchContext(
            $this->owner->class,
<?php

/**
 * @property int $x
 * @property int $y
 * @property string $text
 */
class MyLabel
{
    private $properties;

    private $allowedProperties = array('x', 'y', 'text');

    public function __get($name)
    {
        if (isset($properties[$name]) && in_array($name, $this->allowedProperties)) {
            return $properties[$name];
        } else {
            return null;
        }
    }

    public function __set($name, $value)
    {
        if (in_array($name, $this->allowedProperties)) {
            $properties[$name] = $value;
        } else {
            throw new \LogicException("Property $name is not defined.");
        }
    }

}
            $fields,
            $filters
        );
    }

    public function setVirtualOwner(ElementVirtualLinked $virtualOwner) {
        $this->virtualOwner = $virtualOwner;
    }

    /**
     * Finds and returns elements
     * that are virtual elements which link to this element
     */
    public function getVirtualLinkedElements() {
        return ElementVirtualLinked::get()->filter('LinkedElementID', $this->ID);
    }

    /**
     * Finds and returns published elements
     * that are virtual elements which link to this element
     */
    public function getPublishedVirtualLinkedElements() {
        $current = Versioned::get_reading_mode();
        Versioned::set_reading_mode('Stage.Live');
        $v = $this->getVirtualLinkedElements();
        Versioned::set_reading_mode($current);
        return $v;
    }
}




1			<?php
2
3			/**
4			* @package elemental
5			*/
6			class BaseElement extends Widget
			0 ignored issues – show Coding Style Compatibility introduced 2016-02-17 03:25 UTC by Report Bug Copy Issue Report PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions. You can fix this by adding a namespace to your class: namespace YourVendor; class YourClass { } When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries. Loading history...
7			{
8			/**
9			* @var array $db
10			*/
11			private static $db = array(
			0 ignored issues – show Comprehensibility introduced 2016-02-17 03:25 UTC by Report Bug Copy Issue Report Consider using a different property name as you override a private property of the parent class. Loading history... Unused Code introduced 2016-02-17 03:25 UTC by Report Bug Copy Issue Report The property `$db` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
12			'ExtraClass' => 'Varchar(255)',
13			'HideTitle' => 'Boolean'
14			);
15
16			/**
17			* @var array $has_one
18			*/
19			private static $has_one = array(
			0 ignored issues – show Comprehensibility introduced 2016-02-17 03:25 UTC by Report Bug Copy Issue Report Consider using a different property name as you override a private property of the parent class. Loading history... Unused Code introduced 2016-02-17 03:25 UTC by Report Bug Copy Issue Report The property `$has_one` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
20			'List' => 'ElementList' // optional.
21			);
22
23			/**
24			* @var array $has_many
25			*/
26			private static $has_many = array(
			0 ignored issues – show Comprehensibility introduced 2016-05-24 00:01 UTC by Report Bug Copy Issue Report Consider using a different property name as you override a private property of the parent class. Loading history... Unused Code introduced 2016-05-24 00:01 UTC by Report Bug Copy Issue Report The property `$has_many` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
27			'VirtualClones' => 'ElementVirtualLinked'
28			);
29
30			/**
31			* @var string
32			*/
33			private static $title = "Content Block";
			0 ignored issues – show Comprehensibility introduced 2016-05-23 22:00 UTC by Report Bug Copy Issue Report Consider using a different property name as you override a private property of the parent class. Loading history... Unused Code introduced 2016-05-23 22:00 UTC by Report Bug Copy Issue Report The property `$title` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
34
35			/**

dnadesign / silverstripe-elemental