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<?php
/**
* @copyright Copyright © Kartik Visweswaran, Krajee.com, 2014 - 2016
* @package yii2-widgets
* @subpackage yii2-widget-switchinput
* @version 1.3.1
*/
namespace kartik\switchinput;
use Yii;
use yii\helpers\Html;
use yii\helpers\ArrayHelper;
use yii\base\InvalidConfigException;
use kartik\base\InputWidget;
/**
* Switch widget is a Yii2 wrapper for the Bootstrap Switch plugin by Mattia, Peter, & Emanuele. This input widget is a
* jQuery based replacement for checkboxes and radio buttons and converts them to toggle switchinputes.
*
* @author Kartik Visweswaran <kartikv2@gmail.com>
* @since 1.0
* @see http://www.bootstrap-switch.org/
*/
class SwitchInput extends InputWidget
{
const CHECKBOX = 1;
const RADIO = 2;
/**
* @var int the input type - one of the constants above.
*/
public $type = self::CHECKBOX;
/**
* @var boolean whether to enable third indeterminate behavior when type is `SwitchInput::CHECKBOX`. Defaults to
* `false`.
*/
public $tristate = false;
/**
* @var string|int the value for indeterminate state when `tristate` is true and type is `SwitchInput::CHECKBOX`.
* Defaults to `null`.
*/
public $indeterminateValue = null;
/**
* @var array | boolean HTML attributes for the toggle indicator to turn indeterminate state on and off. The
* following special attributes are recognized:
* - `label`: string, the indeterminate toggle icon markup. Defaults to `×`
* If this is set to `false` the indeterminate toggle icon will not be shown.
*/
public $indeterminateToggle = [];
/**
* @var array the list of items for radio input (applicable only if `type` = 2). The following keys could be setup:
* - label: string the label of each radio item. If this is set to `false` or null, the label will not be displayed.
* - value: string the value of each radio item
* - options: array, HTML attributes for the radio item
* - labelOptions: array, HTML attributes for each radio item label
*/
public $items = [];
/**
* @var boolean whether label is aligned on same line. Defaults to `true`. If set to `false`, the label and input
* will be on separate lines.
*/
public $inlineLabel = true;
/**
* @var array default HTML attributes for each radio item (applicable only if `type` = 2)
*/
public $itemOptions = [];
/**
* @var array default HTML attributes for each radio item label
*/
public $labelOptions = [];
/**
* @var string the separator content between each radio item (applicable only if `type` = 2)
*/
public $separator = " ";
/**
* @var array HTML attributes for the container (applicable only if `type` = 2)
*/
public $containerOptions = ['class' => 'form-group'];
/**
* @inheritdoc
*/
public $pluginName = 'bootstrapSwitch';
/**
* @inheritdoc
*/
public function run()
{
parent::run();
if (empty($this->type) && $this->type !== self::CHECKBOX && $this->type !== self::RADIO) {
throw new InvalidConfigException("You must define a valid 'type' which must be either 1 (for checkbox) or 2 (for radio).");
}
if ($this->type == self::RADIO) {
if (empty($this->items) || !is_array($this->items)) {
throw new InvalidConfigException("You must setup the 'items' array for the 'radio' type.");
}
}
$this->registerAssets();
echo $this->renderInput();
}
/**
* Renders the source Input for the Switch plugin. Graceful fallback to a normal HTML checkbox or radio input in
* case JQuery is not supported by the browser
*
* @return string
*/
protected function renderInput()
{
if ($this->type == self::CHECKBOX) {
if (empty($this->options['label'])) {
$this->options['label'] = null;
}
$input = $this->getInput('checkbox');
$output = ($this->inlineLabel) ? $input : Html::tag('div', $input);
$output = $this->mergeIndToggle($output);
return Html::tag('div', $output, $this->containerOptions) . "\n";
}
$output = '';
Html::addCssClass($this->containerOptions, 'kv-switch-container');
foreach ($this->items as $item) {
if (!is_array($item)) {
continue;
}
$label = ArrayHelper::getValue($item, 'label', false);
$options = ArrayHelper::merge($this->itemOptions, ArrayHelper::getValue($item, 'options', []));
$labelOptions = ArrayHelper::merge($this->labelOptions, ArrayHelper::getValue($item, 'labelOptions', []));
$value = ArrayHelper::getValue($item, 'value', null);
$options['value'] = $value;
$input = Html::radio($this->name, ($value == $this->value), $options);
$output .= Html::label($label, $this->name, $labelOptions) . "\n" .
(($this->inlineLabel) ? $input : Html::tag('div', $input)) . "\n" .
$this->separator;
}
return Html::tag('div', $output, $this->containerOptions) . "\n";
}
/**
* Merges the rendered indeterminate toggle indicator
*
* @var string $output the content to merge with the output
* @return string
*/
protected function mergeIndToggle($output)
{
if (!$this->tristate || $this->indeterminateToggle === false) {
return $output;
}
$icon = ArrayHelper::remove($this->indeterminateToggle, 'label', '×');
$this->indeterminateToggle['data-kv-switch'] = ($this->type == self::CHECKBOX) ? $this->options['id'] : $this->name;
Html::addCssClass($this->indeterminateToggle, 'close kv-ind-toggle');
$icon = Html::tag('span', $icon, $this->indeterminateToggle);
$options = ArrayHelper::remove($this->indeterminateToggle, 'containerOptions', []);
$size = 'kv-size-' . ArrayHelper::getValue($this->pluginOptions, 'size', 'normal');
Html::addCssClass($options, 'kv-ind-container ' . $size);
return Html::tag('div', $icon . "\n" . $output, $options);
}
/**
* Registers the needed assets
*/
public function registerAssets()
{
$view = $this->getView();
SwitchInputAsset::register($view);
if (!isset($this->pluginOptions['animate']) || !is_bool($this->pluginOptions['animate'])) {
$this->pluginOptions['animate'] = true;
}
$ind = $this->indeterminateValue;
$this->pluginOptions['indeterminate'] = $this->tristate && $this->value === $ind && $this->type !== self::RADIO;
$this->pluginOptions['disabled'] = $this->disabled;
$this->pluginOptions['readonly'] = $this->readonly;
$id = $this->type == self::RADIO ? 'jQuery("[name = \'' . $this->name . '\']")' :
'jQuery("#' . $this->options['id'] . '")';
$this->registerPlugin($this->pluginName, $id);
if (!$this->tristate || $this->indeterminateToggle === false || $this->type == self::RADIO) {
return;
}
$tog = 'jQuery("[data-kv-switch=\'' . $this->options['id'] . '\']")';
$js = <<< JS
{$tog}.on('click',function(){
var el={$id}, val;
el.{$this->pluginName}('toggleIndeterminate');
val = el.prop('indeterminate') ? '{$ind}' : (el.is(':checked').length > 0 ? 1 : 0);
el.val(val);
});
JS;
$view->registerJs($js);
}
}