85 lines
2.2 KiB
Text
85 lines
2.2 KiB
Text
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<?php namespace ProcessWire;
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/**
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* Select Multiple Inputfield
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*
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* An Inputfield for handling multiple selection using HTML `<select multiple>`.
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* Also a base type for other multiple selection types (checkboxes, asmSelect, etc.)
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*
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* ProcessWire 3.x, Copyright 2022 by Ryan Cramer
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* https://processwire.com
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*
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* @property int $size
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*
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*/
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class InputfieldSelectMultiple extends InputfieldSelect implements InputfieldHasArrayValue {
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/**
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* Default 'size' attribute value
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*
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*/
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const defaultSize = 10;
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/**
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* Get module info
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*
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* @return array
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*
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*/
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public static function getModuleInfo() {
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return array(
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'title' => __('Select Multiple', __FILE__), // Module Title
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'summary' => __('Select multiple items from a list', __FILE__), // Module Summary
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'version' => 101,
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'permanent' => true,
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);
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}
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/**
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* Construct
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*
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*/
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public function __construct() {
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parent::__construct();
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$this->setAttribute('multiple', 'multiple');
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$this->setAttribute('size', self::defaultSize);
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}
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/**
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* Add options only if they are non-blank
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*
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* We don't need blank options in a select multiple since the unselected state involves no selected options
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*
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* @param string|int $value
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* @param string|null $label
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* @param array|null $attributes
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* @return InputfieldSelect|InputfieldSelectMultiple|self
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*
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*/
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public function addOption($value, $label = null, array $attributes = null) {
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if(is_null($value) || (is_string($value) && !strlen($value))) return $this;
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return parent::addOption($value, $label, $attributes);
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}
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/**
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* Configure Inputfield
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*
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* @return InputfieldWrapper
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*
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*/
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public function ___getConfigInputfields() {
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$inputfields = parent::___getConfigInputfields();
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if($this->className() === 'InputfieldSelectMultiple') {
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// descending classes may null out the 'size' attribute if they don't need it
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/** @var InputfieldInteger $f */
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$f = $this->wire()->modules->get('InputfieldInteger');
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$f->label = $this->_('Size: number of rows visible at once in the select multiple');
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$f->attr('name', 'size');
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$f->attr('value', (int) $this->attr('size'));
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$inputfields->add($f);
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}
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return $inputfields;
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}
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}
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