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<?php |
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/** |
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* HiPanel core package |
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* |
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* @link https://hipanel.com/ |
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* @package hipanel-core |
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* @license BSD-3-Clause |
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* @copyright Copyright (c) 2014-2019, HiQDev (http://hiqdev.com/) |
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*/ |
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namespace hipanel\widgets; |
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use Yii; |
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use yii\base\Widget; |
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use yii\helpers\Html; |
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class BackButton extends Widget |
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{ |
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/** |
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* Html options. |
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* @var array |
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*/ |
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public $options = [ |
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'class' => 'btn btn-default', |
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]; |
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/** |
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* @var string |
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*/ |
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public $selectorClass = 'btn-cancel'; |
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/** |
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* @var string |
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*/ |
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public $label; |
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public function run() |
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{ |
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$curr = $this->getCurrentUrl(); |
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$ref = $this->getReferrerUrl(); |
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if ($curr === $ref) { |
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Yii::$app->session[$this->getIdentifier()] = Yii::$app->session[$this->getIdentifier()] + 1; |
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} else { |
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Yii::$app->session[$this->getIdentifier()] = 1; |
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} |
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$this->registerClientScript(); |
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Html::addCssClass($this->options, $this->selectorClass); |
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return Html::button($this->getLabel(), $this->options); |
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} |
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/** |
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* @return string |
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*/ |
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public function getLabel() |
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{ |
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return $this->label !== null ? $this->label : Yii::t('hipanel', 'Cancel'); |
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} |
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/** |
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* Apply js to view. |
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*/ |
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protected function registerClientScript() |
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{ |
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$this->getView()->registerJs(";$('button.{$this->selectorClass}').on('click', function () {window.history.go({$this->getBackStepsCount()});});"); |
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} |
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/** |
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* @return int |
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*/ |
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protected function getBackStepsCount() |
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{ |
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return -Yii::$app->session[$this->getIdentifier()]; |
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} |
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/** |
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* @return string |
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*/ |
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protected function getIdentifier() |
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{ |
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return self::class; |
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} |
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/** |
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* @return string |
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*/ |
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protected function getCurrentUrl() |
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{ |
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return $this->removeParams(Yii::$app->request->absoluteUrl); |
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} |
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/** |
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* @return string |
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*/ |
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protected function getReferrerUrl() |
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{ |
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return $this->removeParams(Yii::$app->request->referrer); |
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} |
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/** |
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* Remove params from url. |
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* @return string |
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*/ |
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protected function removeParams($url) |
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{ |
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return explode('?', $url, 2)[0]; |
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} |
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} |
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hiqdev /
hipanel-core
