class.ilIdentifiedMultiValuesInputGUI.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */
 
require_once 'Services/Form/classes/class.ilTextInputGUI.php';
require_once 'Services/Form/interfaces/interface.ilMultiValuesItem.php';
 
abstract class ilIdentifiedMultiValuesInputGUI extends ilTextInputGUI implements ilMultiValuesItem
{
        const ELEMENT_DEFAULT_ADD_CMD = 'addElement';
        const ELEMENT_DEFAULT_REMOVE_CMD = 'removeElement';
        const ELEMENT_DEFAULT_MOVE_UP_CMD = 'moveUpElement';
        const ELEMENT_DEFAULT_MOVE_DOWN_CMD = 'moveDownElement';
        
        protected $elementAddCmd = self::ELEMENT_DEFAULT_ADD_CMD;
        protected $elementRemoveCmd = self::ELEMENT_DEFAULT_REMOVE_CMD;
        protected $elementMoveUpCommand = self::ELEMENT_DEFAULT_MOVE_UP_CMD;
        protected $elementMoveDownCommand = self::ELEMENT_DEFAULT_MOVE_DOWN_CMD;
 
        protected $identified_multi_values = array();
        
        protected $formValuesManipulationChain = array();
 
        public function __construct($a_title = "", $a_postvar = "")
        {
                parent::__construct($a_title, $a_postvar);
                
                require_once 'Services/Form/classes/class.ilFormSubmitRecursiveSlashesStripper.php';
                $this->addFormValuesManipulator(new ilFormSubmitRecursiveSlashesStripper());
                
                require_once 'Services/Form/classes/class.ilIdentifiedMultiValuesJsPositionIndexRemover.php';
                $this->addFormValuesManipulator(new ilIdentifiedMultiValuesJsPositionIndexRemover());
                
                //$this->setMulti(true); // this is another planet, do not enable (!)
        }
        
        public function getElementAddCmd()
        {
                return $this->elementAddCmd;
        }
        
        public function setElementAddCmd($elementAddCmd)
        {
                $this->elementAddCmd = $elementAddCmd;
        }
        
        public function getElementRemoveCmd()
        {
                return $this->elementRemoveCmd;
        }
        
        public function setElementRemoveCmd($elementRemoveCmd)
        {
                $this->elementRemoveCmd = $elementRemoveCmd;
        }
        
        public function getElementMoveUpCommand()
        {
                return $this->elementMoveUpCommand;
        }
        
        public function setElementMoveUpCommand($elementMoveUpCommand)
        {
                $this->elementMoveUpCommand = $elementMoveUpCommand;
        }
        
        public function getElementMoveDownCommand()
        {
                return $this->elementMoveDownCommand;
        }
        
        public function setElementMoveDownCommand($elementMoveDownCommand)
        {
                $this->elementMoveDownCommand = $elementMoveDownCommand;
        }
        
        public function setValues($values)
        {
                require_once 'Services/Form/exceptions/class.ilFormException.php';
                throw new ilFormException('setter unsupported, use setIdentifiedMultiValues() instead!');
        }
        
        public function getValues()
        {
                require_once 'Services/Form/exceptions/class.ilFormException.php';
                throw new ilFormException('setter unsupported, use setIdentifiedMultiValues() instead!');
        }
        
        public function setValue($value)
        {
                require_once 'Services/Form/exceptions/class.ilFormException.php';
                throw new ilFormException('setter unsupported, use setIdentifiedMultiValues() instead!');
        }
        
        public function getValue()
        {
                require_once 'Services/Form/exceptions/class.ilFormException.php';
                throw new ilFormException('setter unsupported, use setIdentifiedMultiValues() instead!');
        }
        
        public function setMultiValues(array $values)
        {
                require_once 'Services/Form/exceptions/class.ilFormException.php';
                throw new ilFormException('setter unsupported, use setIdentifiedMultiValues() instead!');
        }
        
        public function getMultiValues()
        {
                require_once 'Services/Form/exceptions/class.ilFormException.php';
                throw new ilFormException('setter unsupported, use setIdentifiedMultiValues() instead!');
        }
        
        final public function setIdentifiedMultiValues($values)
        {
                $this->identified_multi_values = $this->prepareMultiValuesInput($values);
        }
        
        final public function getIdentifiedMultiValues()
        {
                return $this->identified_multi_values;
        }
        
        protected function getMultiValueSubFieldId($identifier, $subFieldIndex)
        {
                $tempPostVar = $this->getMultiValuePostVarSubField($identifier, $subFieldIndex);
                $multiValueFieldId = $this->getFieldIdFromPostVar($tempPostVar);
                
                return $multiValueFieldId;
        }
        
        protected function getMultiValuePosIndexedFieldId($identifier, $positionIndex)
        {
                $tempPostVar = $this->getMultiValuePostVarPosIndexed($identifier, $positionIndex);
                $multiValueFieldId = $this->getFieldIdFromPostVar($tempPostVar);
                
                return $multiValueFieldId;
        }
        
        protected function getMultiValuePosIndexedSubFieldId($identifier, $subFieldIndex, $positionIndex)
        {
                $tempPostVar = $this->getMultiValuePostVarSubFieldPosIndexed($identifier, $subFieldIndex, $positionIndex);
                $multiValueFieldId = $this->getFieldIdFromPostVar($tempPostVar);
                
                return $multiValueFieldId;
        }
        
        protected function getFieldIdFromPostVar($tempPostVar)
        {
                $basicPostVar = $this->getPostVar();
                $this->setPostVar($tempPostVar);
                
                // uses getPostVar() internally, our postvar does not have the counter included
                $multiValueFieldId = $this->getFieldId();
                // now ALL brackets ("[", "]") are escaped, even the ones for the counter
                
                $this->setPostVar($basicPostVar);
                return $multiValueFieldId;
        }
        
        protected function getPostVarSubField($subFieldIndex)
        {
                return $this->getSubFieldCompletedPostVar($subFieldIndex, $this->getPostVar());
        }
        
        protected function getMultiValuePostVarSubField($identifier, $subFieldIndex)
        {
                $elemPostVar = $this->getMultiValuePostVar($identifier);
                $elemPostVar = $this->getSubFieldCompletedPostVar($subFieldIndex, $elemPostVar);
                
                return $elemPostVar;
        }
        
        protected function getMultiValuePostVarSubFieldPosIndexed($identifier, $subFieldIndex, $positionIndex)
        {
                $elemPostVar = $this->getMultiValuePostVarPosIndexed($identifier, $positionIndex);
                $elemPostVar = $this->getSubFieldCompletedPostVar($subFieldIndex, $elemPostVar);
                
                return $elemPostVar;
        }
        
        protected function getMultiValuePostVarPosIndexed($identifier, $positionIndex)
        {
                $elemPostVar = $this->getMultiValuePostVar($identifier);
                $elemPostVar .= "[$positionIndex]";
                
                return $elemPostVar;
        }
        
        protected function getMultiValuePostVar($identifier)
        {
                $elemPostVar = $this->getPostVar();
                $elemPostVar .= "[$identifier]";
                return $elemPostVar;
        }
        
        protected function buildMultiValueSubmitVar($identifier, $positionIndex, $submitCommand)
        {
                $elemSubmitVar = "cmd[{$submitCommand}][{$this->getFieldId()}]";
                $elemSubmitVar .= "[$identifier][$positionIndex]";
                
                return $elemSubmitVar;
        }
        
        final public function setValueByArray($a_values)
        {
                if( !is_array($a_values[$this->getPostVar()]) )
                {
                        $a_values[$this->getPostVar()] = array();
                }
                
                $a_values[$this->getPostVar()] = $this->prepareMultiValuesSubmit(
                        $a_values[$this->getPostVar()]
                );
                
                $this->setIdentifiedMultiValuesByArray($a_values);
        }
        
        protected function setIdentifiedMultiValuesByArray($a_values)
        {
                $this->identified_multi_values = $a_values[$this->getPostVar()];
        }
        
        final public function checkInput()
        {
                if( !is_array($_POST[$this->getPostVar()]) )
                {
                        $_POST[$this->getPostVar()] = array();
                }
                
                $_POST[$this->getPostVar()] = $this->prepareMultiValuesSubmit(
                        $_POST[$this->getPostVar()]
                );
                
                return $this->onCheckInput();
        }
        
        abstract public function onCheckInput();
        
        final protected function prepareMultiValuesInput($values)
        {
                foreach($this->getFormValuesManipulators() as $manipulator)
                {
                        /* @var ilFormValuesManipulator $manipulator */
                        $values = $manipulator->manipulateFormInputValues($values);
                }
                
                return $values;
        }
        
        final protected function prepareMultiValuesSubmit($values)
        {
                foreach($this->getFormValuesManipulators() as $manipulator)
                {
                        /* @var ilFormValuesManipulator $manipulator */
                        $values = $manipulator->manipulateFormSubmitValues($values);
                }
                
                return $values;
        }
        
        protected function getFormValuesManipulators()
        {
                return $this->formValuesManipulationChain;
        }
        
        protected function addFormValuesManipulator(ilFormValuesManipulator $manipulator)
        {
                $this->formValuesManipulationChain[] = $manipulator;
        }
        
        protected function getSubFieldCompletedPostVar($subFieldIndex, $elemPostVar)
        {
                $fieldPostVar = "{$this->getPostVar()}[$subFieldIndex]";
                $elemPostVar = str_replace($this->getPostVar(), $fieldPostVar, $elemPostVar);
                return $elemPostVar;
        }
        
        public function prepareReprintable(assQuestion $question)
        {
                $this->setIdentifiedMultiValues( $this->getIdentifiedMultiValues() );
        }
}