347 lines
10 KiB
Text
347 lines
10 KiB
Text
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<?php namespace ProcessWire;
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/**
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* An Inputfield for handling a single checkbox
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*
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* ProcessWire 3.x, Copyright 2020 by Ryan Cramer
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* https://processwire.com
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*
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* Note: if you want a checkbox already checked, you need to add a setAttribute('checked', 'checked');
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*
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* @property string $checkedValue Value when checked (default=1)
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* @property string $uncheckedValue Value when not checked (default='', blank string)
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* @property string $label2 Alterate label to display next to checkbox (default=use regular label)
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* @property string $checkboxLabel Same as label2, but used as part of field config rather than API-only config.
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* @property bool $checkboxOnly Show only the checkbox without label text next to it? (default=false) @since 3.0.144
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* @property array $labelAttrs Optional attributes for <label> element that surrounds checkbox (default=[]) @since 3.0.141
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* @property int $autocheck When set to 1, setting value attribute to non-blank/non-zero automatically triggers checked.
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*
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*
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*/
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class InputfieldCheckbox extends Inputfield {
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public static function getModuleInfo() {
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return array(
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'title' => __('Checkbox', __FILE__), // Module Title
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'summary' => __('Single checkbox toggle', __FILE__), // Module Summary
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'version' => 106,
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'permanent' => true,
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);
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}
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/**
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* Default checked value
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*
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*/
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const checkedValueDefault = 1;
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/**
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* Default unchecked value
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*
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*/
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const uncheckedValueDefault = '';
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/**
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* True if the $checkedValue set manually (and should be used as a label), false if it was inherited from $value attribute
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*
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*/
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protected $checkedValueIsLabel = false;
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/**
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* Construct and set default settings
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*
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*/
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public function __construct() {
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$this->set('checkedValue', self::checkedValueDefault);
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$this->checkedValueIsLabel = false; // cancel line above
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$this->set('uncheckedValue', self::uncheckedValueDefault);
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// when autocheck set to 1, setting the value attribute to non-zero automatically triggered checked=checked attribute
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$this->set('autocheck', 0);
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// alternate label for checkbox (both do the same thing but for different config context)
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$this->set('label2', ''); // typically specified by API
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$this->set('checkboxOnly', false); // render checkbox only, without showing label text
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$this->set('checkboxLabel', ''); // typically specified by interactive config
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$this->set('labelAttrs', array()); // Optional attributes for <label> element that surrounds checkbox (3.0.141+)
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parent::__construct();
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// Use an undefined skipLabel setting so we can detect when to apply a custom default in ___render()
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// according to runtime conditions (placement after parent::__construct() is required)
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$this->set('skipLabel', -1);
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}
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/**
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* Wired to ProcessWire instance
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*
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*/
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public function wired() {
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$languages = $this->wire()->languages;
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if($languages) {
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foreach($languages as $language) {
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if(!$language->isDefault()) $this->set("checkboxLabel$language", "");
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}
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}
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parent::wired();
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}
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/**
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* Init
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*
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*/
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public function init() {
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parent::init();
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$this->attr('checked', '');
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}
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/**
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* Render checkbox input
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*
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* @return string
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*
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*/
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public function ___render() {
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$user = $this->wire()->user;
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// label placed to the right of the checkbox
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$checkboxLabel = '';
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if(!$this->checkboxOnly) {
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// we will be displaying a label next to the checkbox
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if($user->language) $checkboxLabel = $this->getSetting("checkboxLabel$user->language");
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if(!$checkboxLabel) $checkboxLabel = $this->getSetting("checkboxLabel");
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if(!$checkboxLabel && $this->checkedValueIsLabel) $checkboxLabel = $this->checkedValue;
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if(!$checkboxLabel) $checkboxLabel = $this->getSetting('label2');
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$checkboxLabel = trim($checkboxLabel);
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}
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if($this->getSetting('skipLabel') === -1) {
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// nothing has modified the skipLabel setting so apply an automatic setting
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if($checkboxLabel || $this->description) {
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$this->set('skipLabel', Inputfield::skipLabelFor);
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} else {
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$this->set('skipLabel', Inputfield::skipLabelHeader);
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}
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}
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if(!$checkboxLabel && !$this->checkboxOnly) {
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$checkboxLabel = $this->label;
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}
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$checkboxAttrs = $this->getAttributes();
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$checkboxAttrs['value'] = $this->checkedValue;
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unset($checkboxAttrs['type']);
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$checkboxAttrs = $this->getAttributesString($checkboxAttrs);
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if(strlen($checkboxLabel)) {
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if($this->getSetting('entityEncodeLabel') !== false) {
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$checkboxLabel = $this->entityEncode($checkboxLabel, Inputfield::textFormatBasic);
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}
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$checkboxLabel = "<span class='pw-no-select'>$checkboxLabel</span>";
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}
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$labelAttrs = $this->getSetting('labelAttrs');
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$labelAttrs = empty($labelAttrs) ? '' : ' ' . $this->getAttributesString($labelAttrs);
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$out =
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"<label$labelAttrs>" .
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"<input type='checkbox' $checkboxAttrs />" .
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$checkboxLabel .
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"</label>";
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return $out;
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}
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/**
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* Render value only
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*
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* @return string
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*
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*/
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public function ___renderValue() {
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$value = $this->val();
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if($value != self::uncheckedValueDefault && $value != $this->uncheckedValue) {
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$value = $this->wire()->sanitizer->entities($this->checkedValue);
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$value = $value === "1" ? $this->_('Checked') : $value;
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$value = wireIconMarkup('check-square-o') . " $value";
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} else {
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$value = $this->wire()->sanitizer->entities($this->uncheckedValue);
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$value = empty($value) ? $this->_('Not checked') : $value;
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$value = wireIconMarkup('square-o') . " $value";
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}
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return $value;
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}
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/**
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* Set attribute
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*
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* @param array|string $key
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* @param array|int|string $value
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* @return Inputfield|InputfieldCheckbox
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*
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*/
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public function setAttribute($key, $value) {
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if($key === 'value' && $value && "$value" !== "$this->uncheckedValue") {
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if("$value" !== (string) self::checkedValueDefault) {
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$this->checkedValue = $value;
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$this->checkedValueIsLabel = false;
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}
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// autocheck mode: when non-zero 'value' set, then 'checked=checked' is assumed
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if($this->autocheck || $this->getSetting('formBuilder')) $this->attr('checked', 'checked');
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}
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return parent::setAttribute($key, $value);
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}
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/**
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* Set property
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*
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* @param string $key
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* @param mixed $value
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* @return InputfieldCheckbox|Inputfield
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*
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*/
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public function set($key, $value) {
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if($key === 'checkedValue' && $value != self::checkedValueDefault) {
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$this->checkedValueIsLabel = true;
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}
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return parent::set($key, $value);
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}
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/**
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* Get or set current checkbox boolean attribute state
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*
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* ~~~~~
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* // the following two lines are equivalent to GET checkbox state
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* $checked = $f->checked();
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* $checked = !empty($f->attr('checked'));
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*
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* // the following two lines are equivalent to SET checkbox state
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* $f->checked(true);
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* $f->attr('checked', 'checked');
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* ~~~~~
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*
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* @param bool|null Specify boolean to set checkbox state
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* @return bool
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* @since 3.0.133
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*
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*/
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public function checked($checked = null) {
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if($checked !== null) {
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if($checked) {
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$this->attr('checked', 'checked');
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$checked = true;
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} else {
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$this->removeAttr('checked');
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$checked = false;
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}
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} else {
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$checked = $this->attr('checked');
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$checked = empty($checked) ? false : true;
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}
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return $checked;
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}
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/**
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* Is checkbox currently checked?
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*
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* #pw-internal
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*
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* @return bool
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*
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*/
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public function isChecked() {
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return $this->checked();
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}
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/**
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* Is empty (checkbox not checked)?
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*
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* @return bool
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*
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*/
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public function isEmpty() {
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return !$this->checked();
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}
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/**
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* Process input
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*
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* @param WireInputData $input
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* @return $this
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*
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*/
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public function ___processInput(WireInputData $input) {
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$value = $input[$this->name];
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$checked = $this->isChecked();
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if(!empty($value)) {
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if(!$checked) $this->trackChange('value', $this->uncheckedValue, $this->checkedValue);
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parent::attr('checked', 'checked');
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parent::attr('value', $this->checkedValue);
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} else {
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if($checked) $this->trackChange('value', $this->checkedValue, $this->uncheckedValue);
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parent::attr('checked', '');
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parent::attr('value', $this->uncheckedValue);
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}
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return $this;
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}
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/**
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* Configure checkbox field
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*
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* @return InputfieldWrapper
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*
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*/
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public function ___getConfigInputfields() {
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$inputfields = parent::___getConfigInputfields();
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$languages = $this->wire()->languages;
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/** @var InputfieldText $f */
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$f = $this->wire()->modules->get('InputfieldText');
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$f->attr('name', 'checkboxLabel');
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$f->label = $this->_('Checkbox label');
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$f->description = $this->_('If you want to have separate field and checkbox labels, specify the label that will appear next to the checkbox here.');
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$f->notes = $this->_('If not specified, the field label will be used instead.');
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$f->attr('value', $this->getSetting('checkboxLabel'));
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$f->icon = 'check-square';
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$f->collapsed = Inputfield::collapsedBlank;
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if($languages) {
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$f->useLanguages = true;
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foreach($languages as $language) {
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if(!$language->isDefault()) $f->set("value$language", $this->getSetting("checkboxLabel$language"));
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}
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}
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$inputfields->add($f);
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// if working with fieldtype, no additional settings are applicable
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if($this->hasFieldtype) return $inputfields;
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$f = $this->wire()->modules->get('InputfieldText');
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$f->attr('name', 'checkedValue');
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$f->attr('value', $this->checkedValue);
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$f->label = $this->_('Checked Value');
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$f->collapsed = $this->checkedValue == self::checkedValueDefault ? Inputfield::collapsedYes : Inputfield::collapsedNo;
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$f->description = $this->_('When populated with something other than "1", this will appear as a label directly next to the checkbox.');
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$f->required = true;
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$inputfields->add($f);
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$f = $this->wire()->modules->get('InputfieldText');
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$f->attr('name', 'uncheckedValue');
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$f->attr('value', "$this->uncheckedValue");
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$f->label = $this->_('Unchecked Value');
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$f->collapsed = $this->uncheckedValue == self::uncheckedValueDefault ? Inputfield::collapsedYes : Inputfield::collapsedNo;
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$f->description = $this->_('This only appears in result entries, not in the form itself. You should leave this blank unless you want it to hold a specific value.');
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$inputfields->add($f);
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return $inputfields;
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}
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}
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