class.ilMultipleImagesAdditionalIndexLevelRemover.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Services/Form/interfaces/interface.ilFormValuesManipulator.php';

class ilMultipleImagesAdditionalIndexLevelRemover implements ilFormValuesManipulator
{
        protected $filesSubmissionProperties = array(
                'name', 'tmp_name', 'type', 'error', 'size'
        );
        
        protected $postVar;
        
        public function getPostVar()
        {
                return $this->postVar;
        }
        
        public function setPostVar($postVar)
        {
                $this->postVar = $postVar;
        }

        protected function getFilesSubmissionProperties()
        {
                return $this->filesSubmissionProperties;
        }
        public function manipulateFormInputValues($inputValues)
        {
                return $inputValues;
        }
        
        public function manipulateFormSubmitValues($submitValues)
        {
                $submitValues = $this->removeAdditionalSubFieldsLevelFromSubmitValues($submitValues);
                
                $_FILES[$this->getPostVar()] = $this->removeAdditionalSubFieldsLevelFromFilesSubmit(
                        $_FILES[$this->getPostVar()]
                );
                
                return $submitValues;
        }
        protected function isSubFieldAvailable($values, $subFieldName)
        {
                if( !is_array($values) )
                {
                        return false;
                }
                
                if( !isset($values[$subFieldName]) )
                {
                        return false;
                }
                
                if( !is_array($values[$subFieldName]) )
                {
                        return false;
                }
                
                return true;
        }
        
        protected function isIteratorSubfieldAvailable($values)
        {
                return $this->isSubFieldAvailable($values, ilMultipleImagesInputGUI::ITERATOR_SUBFIELD_NAME);
        }
        
        protected function isUploadSubfieldAvailable($values)
        {
                return $this->isSubFieldAvailable($values, ilMultipleImagesInputGUI::IMAGE_UPLOAD_SUBFIELD_NAME);
        }
        
        protected function removeAdditionalSubFieldsLevelFromSubmitValues($values)
        {
                if( !$this->isIteratorSubfieldAvailable($values) )
                {
                        return $values;
                }
                
                $storedImages = $values[ilMultipleImagesInputGUI::STORED_IMAGE_SUBFIELD_NAME];
                $actualValues = array();
                        
                foreach($values[ilMultipleImagesInputGUI::ITERATOR_SUBFIELD_NAME] as $index => $value)
                {
                        if( !isset($storedImages[$index]) )
                        {
                                $actualValues[$index] = '';
                                continue;
                        }
                        
                        $actualValues[$index] = $storedImages[$index];
                }
                
                return $actualValues;
        }
        
        protected function removeAdditionalSubFieldsLevelFromFilesSubmitProperty($uploadProperty)
        {
                if( !$this->isUploadSubfieldAvailable($uploadProperty) )
                {
                        return $uploadProperty;
                }
                
                foreach($uploadProperty as $subField => $submittedFile )
                {
                        foreach($submittedFile as $identifier => $uploadValue)
                        {
                                $uploadProperty[$identifier] = $uploadValue;
                        }
                        
                        unset($uploadProperty[$subField]);
                }
                
                return $uploadProperty;
        }
        
        protected function removeAdditionalSubFieldsLevelFromFilesSubmit($filesSubmit)
        {
                foreach($this->getFilesSubmissionProperties() as $uploadProperty)
                {
                        if( !isset($filesSubmit[$uploadProperty]) )
                        {
                                continue;
                        }

                        $filesSubmit[$uploadProperty] = $this->removeAdditionalSubFieldsLevelFromFilesSubmitProperty(
                                $filesSubmit[$uploadProperty]
                        );
                }
                
                return $filesSubmit;
        }
}