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<?php
/**
* @copyright Copyright © Kartik Visweswaran, Krajee.com, 2014 - 2017
* @package yii2-widgets
* @subpackage yii2-widget-alert
* @version 1.1.1
*/
namespace kartik\alert;
use Yii;
use yii\base\InvalidConfigException;
use yii\bootstrap\Widget;
use yii\helpers\Html;
use yii\helpers\ArrayHelper;
use kartik\base\Config;
use kartik\growl\Growl;
/**
* AlertBlock widget groups multiple [[Alert]] or [[Growl]] widgets as one single block. You can choose to
* automatically read and display session flash messages (which is the default setting) or setup your own block of
* custom alerts.
*
* @author Kartik Visweswaran <kartikv2@gmail.com>
* @since 1.0
*/
class AlertBlock extends Widget
{
/**
* Default bootstrap alert style
*/
const TYPE_ALERT = 'alert';
/**
* Bootstrap growl plugin alert style
*/
const TYPE_GROWL = 'growl';
/**
* @var string the type of alert to use. Can be one of [[TYPE_ALERT]] or [[TYPE_GROWL]]. Defaults to [[TYPE_ALERT]].
*/
public $type = self::TYPE_ALERT;
/**
* @var integer time in milliseconds to delay the fade out of each alert. If set to `0` or `false`, alerts
* will never fade out and will be always displayed. This defaults to `2000` ms for [[TYPE_ALERT]] and
* `1000` ms for [[TYPE_GROWL]].
*/
public $delay;
/**
* @var boolean whether to automatically use messages set via `Yii::$app->session->setFlash()`. Defaults to `true`.
* If set to `false`, you would need to pass the `body` setting within [[alertSetting]] array.
*/
public $useSessionFlash = true;
/**
* @var array the alert types configuration for the alert messages. This array is setup as `$alert => $settings`,
* where:
*
* - `$alert`: _string_, is the name of the session flash variable (e.g. `error`, `success`, `info`, `warning`).
* - `$settings`: _array_, the [[Alert]] or [[Growl]] widget settings depending on the [[type]] set.
*/
public $alertSettings = [];
/**
* @var array the options for rendering the close button tag. This will be overridden by the `closeButton` setting
* within the [[alertSettings]] configuration.
*/
public $closeButton = [];
/**
* @inheritdoc
*/
public function init()
{
parent::init();
$this->initOptions();
echo Html::beginTag('div', $this->options) . "\n";
}
/**
* @inheritdoc
*/
public function run()
{
parent::run();
if ($this->useSessionFlash) {
$this->renderFlashAlerts();
} else {
$this->renderAlerts();
}
echo "\n" . Html::endTag('div');
}
/**
* Initializes widget options and settings.
*
* @throws InvalidConfigException
*/
protected function initOptions()
{
if ($this->type == self::TYPE_GROWL) {
Config::checkDependency('growl\Growl', 'yii2-widget-growl', 'for rendering Growl notifications in the alert block');
}
if (empty($this->options['id'])) {
$this->options['id'] = $this->getId();
}
if (!isset($this->delay)) {
$this->delay = ($this->type == self::TYPE_ALERT) ? 2000 : 1200;
}
if (empty($this->alertSettings) && $this->type == self::TYPE_GROWL) {
$this->alertSettings = [
'error' => ['type' => Growl::TYPE_DANGER],
'success' => ['type' => Growl::TYPE_SUCCESS],
'info' => ['type' => Growl::TYPE_INFO],
'warning' => ['type' => Growl::TYPE_WARNING],
'growl' => ['type' => Growl::TYPE_GROWL]
];
} elseif (empty($this->alertSettings)) {
$this->alertSettings = [
'error' => ['type' => Alert::TYPE_DANGER],
'success' => ['type' => Alert::TYPE_SUCCESS],
'info' => ['type' => Alert::TYPE_INFO],
'warning' => ['type' => Alert::TYPE_WARNING],
'primary' => ['type' => Alert::TYPE_PRIMARY],
'default' => ['type' => Alert::TYPE_DEFAULT]
];
}
}
/**
* Renders alerts from session flash settings.
* @see [[\yii\web\Session::getAllFlashes()]]
*/
public function renderFlashAlerts()
{
$type = ($this->type == self::TYPE_GROWL) ? self::TYPE_GROWL : self::TYPE_ALERT;
$session = Yii::$app->getSession();
$flashes = $session->getAllFlashes();
$delay = $this->delay;
foreach ($flashes as $alert => $config) {
if (!empty($this->alertSettings[$alert])) {
$messages = is_array($config) ? $config : [$config];
foreach($messages as $message) {
$settings = $this->alertSettings[$alert];
$settings['body'] = $message;
if (empty($settings['closeButton'])) {
$settings['closeButton'] = $this->closeButton;
}
$settings['delay'] = $delay;
$delay += $this->delay;
echo ($type == self::TYPE_GROWL) ? Growl::widget($settings) : Alert::widget($settings);
}
$session->removeFlash($alert);
}
}
}
/**
* Renders manually set alerts
*/
public function renderAlerts()
{
$type = ($this->type == self::TYPE_GROWL) ? self::TYPE_GROWL : self::TYPE_ALERT;
foreach ($this->alertSettings as $alert => $settings) {
if (!empty($settings['body'])) {
echo ($type == self::TYPE_GROWL) ? Growl::widget($settings) : Alert::widget($settings);
}
}
}
/**
* Renders the close button.
*
* @return string the rendering result
*/
protected function renderCloseButton()
{
if ($this->closeButton !== null) {
$tag = ArrayHelper::remove($this->closeButton, 'tag', 'button');
$label = ArrayHelper::remove($this->closeButton, 'label', '×');
if ($tag === 'button' && !isset($this->closeButton['type'])) {
$this->closeButton['type'] = 'button';
}
return Html::tag($tag, $label, $this->closeButton);
} else {
return null;
}
}
}