Yii2 Bootstrap 3
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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\bootstrap;
use Yii;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;
/**
* Alert renders an alert bootstrap component.
*
* For example,
*
* ```php
* echo Alert::widget([
* 'options' => [
* 'class' => 'alert-info',
* ],
* 'body' => 'Say hello...',
* ]);
* ```
*
* The following example will show the content enclosed between the [[begin()]]
* and [[end()]] calls within the alert box:
*
* ```php
* Alert::begin([
* 'options' => [
* 'class' => 'alert-warning',
* ],
* ]);
*
* echo 'Say hello...';
*
* Alert::end();
* ```
*
* @see http://getbootstrap.com/components/#alerts
* @author Antonio Ramirez <amigo.cobos@gmail.com>
* @since 2.0
*/
class Alert extends Widget
{
/**
* @var string the body content in the alert component. Note that anything between
* the [[begin()]] and [[end()]] calls of the Alert widget will also be treated
* as the body content, and will be rendered before this.
*/
public $body;
/**
* @var array the options for rendering the close button tag.
* The close button is displayed in the header of the modal window. Clicking
* on the button will hide the modal window. If this is false, no close button will be rendered.
*
* The following special options are supported:
*
* - tag: string, the tag name of the button. Defaults to 'button'.
* - label: string, the label of the button. Defaults to '&times;'.
*
* The rest of the options will be rendered as the HTML attributes of the button tag.
* Please refer to the [Alert documentation](http://getbootstrap.com/components/#alerts)
* for the supported HTML attributes.
*/
public $closeButton = [];
/**
* Initializes the widget.
*/
public function init()
{
parent::init();
$this->initOptions();
echo Html::beginTag('div', $this->options) . "\n";
echo $this->renderBodyBegin() . "\n";
}
/**
* Renders the widget.
*/
public function run()
{
echo "\n" . $this->renderBodyEnd();
echo "\n" . Html::endTag('div');
$this->registerPlugin('alert');
}
/**
* Renders the close button if any before rendering the content.
* @return string the rendering result
*/
protected function renderBodyBegin()
{
return $this->renderCloseButton();
}
/**
* Renders the alert body (if any).
* @return string the rendering result
*/
protected function renderBodyEnd()
{
return $this->body . "\n";
}
/**
* Renders the close button.
* @return string the rendering result
*/
protected function renderCloseButton()
{
if ($this->closeButton !== false) {
$tag = ArrayHelper::remove($this->closeButton, 'tag', 'button');
$label = ArrayHelper::remove($this->closeButton, 'label', '&times;');
if ($tag === 'button' && !isset($this->closeButton['type'])) {
$this->closeButton['type'] = 'button';
}
return Html::tag($tag, $label, $this->closeButton);
} else {
return null;
}
}
/**
* Initializes the widget options.
* This method sets the default values for various options.
*/
protected function initOptions()
{
Html::addCssClass($this->options, 'alert');
Html::addCssClass($this->options, 'fade');
Html::addCssClass($this->options, 'in');
if ($this->closeButton !== null) {
$this->closeButton = array_merge([
'data-dismiss' => 'alert',
'aria-hidden' => 'true',
'class' => 'close',
], $this->closeButton);
}
}
}