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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\helpers\Html;
/**
* ButtonDropdown renders a group or split button dropdown bootstrap component.
*
* For example,
*
* ```php
* // a button group using Dropdown widget
* echo ButtonDropdown::widget(array(
* 'label' => 'Action',
* 'dropdown' => array(
* 'items' => array(
* array(
* 'label' => 'DropdownA',
* 'url' => '/',
* ),
* array(
* 'label' => 'DropdownB',
* 'url' => '#',
* ),
* ),
* ),
* ));
* ```
* @see http://twitter.github.io/bootstrap/javascript.html#buttons
* @see http://twitter.github.io/bootstrap/components.html#buttonDropdowns
* @author Antonio Ramirez <amigo.cobos@gmail.com>
* @since 2.0
*/
class ButtonDropdown extends Widget
{
/**
* @var string the button label
*/
public $label = 'Button';
/**
* @var array the HTML attributes of the button.
*/
public $buttonOptions = array();
/**
* @var array the configuration array for [[Dropdown]].
*/
public $dropdown = array();
/**
* @var boolean whether to display a group of split-styled button group.
*/
public $split = false;
/**
* Initializes the widget.
* If you override this method, make sure you call the parent implementation first.
*/
public function init()
{
parent::init();
Html::addCssClass($this->options, 'btn-group');
}
/**
* Renders the widget.
*/
public function run()
{
echo Html::beginTag('div', $this->options) . "\n";
echo $this->renderButton() . "\n";
echo $this->renderDropdown() . "\n";
echo Html::endTag('div') . "\n";
$this->registerPlugin('button');
}
/**
* Generates the button dropdown.
* @return string the rendering result.
*/
protected function renderButton()
{
Html::addCssClass($this->buttonOptions, 'btn');
if ($this->split) {
$tag = 'button';
$options = $this->buttonOptions;
$this->buttonOptions['data-toggle'] = 'dropdown';
Html::addCssClass($this->buttonOptions, 'dropdown-toggle');
$splitButton = Button::widget(array(
'label' => '<span class="caret"></span>',
'encodeLabel' => false,
'options' => $this->buttonOptions,
));
} else {
$tag = 'a';
$this->label .= ' <span class="caret"></span>';
$options = $this->buttonOptions;
if (!isset($options['href'])) {
$options['href'] = '#';
}
Html::addCssClass($options, 'dropdown-toggle');
$options['data-toggle'] = 'dropdown';
$splitButton = '';
}
return Button::widget(array(
'tagName' => $tag,
'label' => $this->label,
'options' => $options,
'encodeLabel' => false,
)) . "\n" . $splitButton;
}
/**
* Generates the dropdown menu.
* @return string the rendering result.
*/
protected function renderDropdown()
{
$config = $this->dropdown;
$config['clientOptions'] = false;
return Dropdown::widget($config);
}
}