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<?php |
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declare(strict_types=1); |
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namespace SKien\Formgenerator; |
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/** |
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* Range slider element |
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* |
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* @package Formgenerator |
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* @author Stefanius <[email protected]> |
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* @copyright MIT License - see the LICENSE file for details |
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*/ |
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class FormRange extends FormInput |
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{ |
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/** @var int value */ |
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protected int $iValue = 0; |
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/** @var int step */ |
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protected int $iStep = 1; |
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/** @var int min value */ |
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protected int $iMin = 0; |
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/** @var int max value */ |
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protected int $iMax = 100; |
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/** |
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* @param string $strName name of input |
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* @param string $strWidth width |
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* @param int $iMin |
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* @param int $iMax |
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* @param int $wFlags flags (default = 0) |
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*/ |
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public function __construct(string $strName, string $strWidth, int $iMin=0, int $iMax=100, int $wFlags = 0) |
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{ |
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parent::__construct($strName, $strWidth, $wFlags); |
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$this->strType = 'range'; |
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$this->iMin = $iMin; |
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$this->iMax = $iMax; |
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} |
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/** |
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* Set min/max value accepted by input field. |
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* @param int $iMin - set to null, if no limitation wanted |
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* @param int $iMax - set to null, if no limitation wanted |
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*/ |
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public function setMinMax(?int $iMin, ?int $iMax) : void |
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{ |
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$this->iMin = $iMin ?? $this->iMin; |
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$this->iMax = $iMax ?? $this->iMax; |
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} |
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/** |
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* Set step width to be performed by slider. |
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* @param int $iStep |
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*/ |
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public function setStep(int $iStep) : void |
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{ |
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$this->iStep = $iStep; |
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} |
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/** |
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* get value from dataprovider. |
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* Value have to be retrieved earlier because it may be needed for the value-label |
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* before the value of the range element is set. |
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*/ |
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protected function onParentSet() : void |
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{ |
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$this->iValue = intval($this->oFG->getData()->getValue($this->strName)) ?? $this->iMin; |
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} |
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/** |
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* {@inheritDoc} |
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* @see \SKien\Formgenerator\FormElement::buildValue() |
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*/ |
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protected function buildValue() : string |
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{ |
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$strHTML = ' value="' . $this->iValue . '"'; |
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return $strHTML; |
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} |
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/** |
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* Build the HTML-notation for the input element. |
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* {@inheritDoc} |
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* @see \SKien\Formgenerator\FormElement::getHTML() |
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*/ |
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public function getHTML() : string |
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{ |
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$this->addAttribute('step', (string)$this->iStep); |
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$this->addAttribute('min', (string)$this->iMin); |
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$this->addAttribute('max', (string)$this->iMax); |
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$this->addAttribute('autocomplete', 'off'); |
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$this->processFlags(); |
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$strHTML = $this->buildContainerDiv('display: flex;'); |
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$this->strID = $this->strID ?: $this->strName; |
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if ($this->oFlags->isSet(FormFlags::SHOW_VALUE) && !$this->oFlags->isSet(FormFlags::ALIGN_RIGHT)) { |
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$strHTML .= $this->buildValueLabel(); |
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} |
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$strHTML .= '<div class="slider" style="width: ' . $this->size . ';">'; |
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$strHTML .= '<input'; |
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$strHTML .= ' type="' . $this->strType . '"'; |
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$strHTML .= ' name="' . $this->strName . '"'; |
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$strHTML .= $this->buildClass(); |
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$strHTML .= $this->buildID(); |
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$strHTML .= $this->buildStyle(); |
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$strHTML .= $this->buildTabindex(); |
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$strHTML .= $this->buildAttributes(); |
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$strHTML .= $this->buildValue(); |
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$strHTML .= '>'; |
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$strHTML .= '</div>' . PHP_EOL; |
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if ($this->oFlags->isSet(FormFlags::SHOW_VALUE) && $this->oFlags->isSet(FormFlags::ALIGN_RIGHT)) { |
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$strHTML .= $this->buildValueLabel(); |
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} |
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$strHTML .= '</div>' . PHP_EOL; |
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return $strHTML; |
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} |
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/** |
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* Build the label to display the actual value selected by the range element. |
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* @return string |
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*/ |
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protected function buildValueLabel() : string |
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{ |
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// if min is negative it can be longer than the max value... |
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$iLen = (strlen((string)$this->iMin) > strlen((string)$this->iMax)) ? strlen((string)$this->iMin) : strlen((string)$this->iMax); |
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$strHTML = '<label class="slider_label"'; |
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$strHTML .= ' for="' . $this->strID . '"'; |
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$strHTML .= ' style="width: ' . $iLen . 'em;'; |
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if ($this->oFlags->isSet(FormFlags::ALIGN_RIGHT)) { |
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$strHTML .= ' text-align: right;'; |
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} |
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$strHTML .= '">'; |
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$strHTML .= $this->iValue; |
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$strHTML .= '</label>' . PHP_EOL; |
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return $strHTML; |
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} |
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} |
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Stefanius67 /
Formgenerator
