iTop/sources/Core/AttributeDefinition/AttributeDashboard.php

<?php

class AttributeDashboard extends AttributeDefinition
{
    /**
     * Useless constructor, but if not present PHP 7.4.0/7.4.1 is crashing :( (N°2329)
     *
     * @see https://www.php.net/manual/fr/language.oop5.decon.php states that child constructor can be ommited
     * @see https://bugs.php.net/bug.php?id=79010 bug solved in PHP 7.4.9
     *
     * @param string $sCode
     * @param array $aParams
     *
     * @throws \Exception
     * @noinspection SenselessProxyMethodInspection
     */
    public function __construct($sCode, $aParams)
    {
        parent::__construct($sCode, $aParams);
    }

    public static function ListExpectedParams()
    {
        return array_merge(parent::ListExpectedParams(),
            array("definition_file", "is_user_editable"));
    }

    public function GetDashboard()
    {
        $sAttCode = $this->GetCode();
        $sClass = MetaModel::GetAttributeOrigin($this->GetHostClass(), $sAttCode);
        $sFilePath = APPROOT . 'env-' . utils::GetCurrentEnvironment() . '/' . $this->Get('definition_file');
        return RuntimeDashboard::GetDashboard($sFilePath, $sClass . '__' . $sAttCode);
    }

    public function IsUserEditable()
    {
        return $this->Get('is_user_editable');
    }

    public function IsWritable()
    {
        return false;
    }

    public function GetEditClass()
    {
        return "";
    }

    public function GetDefaultValue(DBObject $oHostObject = null)
    {
        return null;
    }

    public function GetBasicFilterOperators()
    {
        return array();
    }

    public function GetBasicFilterLooseOperator()
    {
        return '=';
    }

    public function GetBasicFilterSQLExpr($sOpCode, $value)
    {
        return '';
    }

    /**
     * @inheritdoc
     */
    public function MakeFormField(DBObject $oObject, $oFormField = null)
    {
        return null;
    }

    // if this verb returns false, then GetValue must be implemented
    public static function LoadInObject()
    {
        return false;
    }

    public function GetValue($oHostObject)
    {
        return '';
    }

    /**
     * @inheritDoc
     */
    public function HasAValue($proposedValue): bool
    {
        // Always return false for now, we don't consider a custom version of a dashboard
        return false;
    }
}