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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\ArrayHelper;
use yii\helpers\Url;
/**
* ButtonDropdown renders a group or split button dropdown bootstrap component.
*
* For example,
*
* ```php
* // a button group using Dropdown widget
* echo ButtonDropdown::widget([
* 'label' => 'Action',
* 'dropdown' => [
* 'items' => [
* ['label' => 'DropdownA', 'url' => '/'],
* ['label' => 'DropdownB', 'url' => '#'],
* ],
* ],
* ]);
* ```
* @see http://getbootstrap.com/javascript/#buttons
* @see http://getbootstrap.com/components/#btn-dropdowns
* @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 for the container tag. The following special options are recognized:
*
* - tag: string, defaults to "div", the name of the container tag.
*
* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
* @since 2.0.1
*/
public $containerOptions = [];
/**
* @var array the HTML attributes of the button.
* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
*/
public $options = [];
/**
* @var array the configuration array for [[Dropdown]].
*/
public $dropdown = [];
/**
* @var bool whether to display a group of split-styled button group.
*/
public $split = false;
/**
* @var string the tag to use to render the button
*/
public $tagName = 'button';
/**
* @var bool whether the label should be HTML-encoded.
*/
public $encodeLabel = true;
/**
* @var string name of a class to use for rendering dropdowns withing this widget. Defaults to [[Dropdown]].
* @since 2.0.7
*/
public $dropdownClass = 'yii\bootstrap\Dropdown';
/**
* Renders the widget.
*/
public function run()
{
// @todo use [[options]] instead of [[containerOptions]] and introduce [[buttonOptions]] before 2.1 release
Html::addCssClass($this->containerOptions, ['widget' => 'btn-group']);
$options = $this->containerOptions;
$tag = ArrayHelper::remove($options, 'tag', 'div');
$this->registerPlugin('dropdown');
return implode("\n", [
Html::beginTag($tag, $options),
$this->renderButton(),
$this->renderDropdown(),
Html::endTag($tag)
]);
}
/**
* Generates the button dropdown.
* @return string the rendering result.
*/
protected function renderButton()
{
Html::addCssClass($this->options, ['widget' => 'btn']);
$label = $this->label;
if ($this->encodeLabel) {
$label = Html::encode($label);
}
if ($this->split) {
$options = $this->options;
$this->options['data-toggle'] = 'dropdown';
Html::addCssClass($this->options, ['toggle' => 'dropdown-toggle']);
unset($options['id']);
$splitButton = Button::widget([
'label' => '<span class="caret"></span>',
'encodeLabel' => false,
'options' => $this->options,
'view' => $this->getView(),
]);
} else {
$label .= ' <span class="caret"></span>';
$options = $this->options;
Html::addCssClass($options, ['toggle' => 'dropdown-toggle']);
$options['data-toggle'] = 'dropdown';
$splitButton = '';
}
if (isset($options['href'])) {
if (is_array($options['href'])) {
$options['href'] = Url::to($options['href']);
}
} else {
if ($this->tagName === 'a') {
$options['href'] = '#';
}
}
return Button::widget([
'tagName' => $this->tagName,
'label' => $label,
'options' => $options,
'encodeLabel' => false,
'view' => $this->getView(),
]) . "\n" . $splitButton;
}
/**
* Generates the dropdown menu.
* @return string the rendering result.
*/
protected function renderDropdown()
{
$config = $this->dropdown;
$config['clientOptions'] = false;
$config['view'] = $this->getView();
/** @var Widget $dropdownClass */
$dropdownClass = $this->dropdownClass;
return $dropdownClass::widget($config);
}
}