Fixes #1222: refactored jui/Widget, intorduced jui/Slider and jui/SliderInput

extensions/jui/Slider.php

+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\jui;
+
+use yii\helpers\Html;
+
+/**
+ * Slider renders a slider jQuery UI widget.
+ *
+ * echo Slider::widget([
+ *     'clientOptions' => [
+ *         'min' => 1,
+ *         'max' => 10,
+ *     ],
+ * ]);
+ * ```
+ *
+ * @see http://api.jqueryui.com/slider/
+ * @author Alexander Makarov <sam@rmcreative.ru>
+ * @since 2.0
+ */
+class Slider extends Widget
+{
+	protected $clientEventsMap = [
+		'change' => 'slidechange',
+		'create' => 'slidecreate',
+		'slide' => 'slide',
+		'start' => 'slidestart',
+		'stop' => 'slidestop',
+	];
+
+	/**
+	 * Executes the widget.
+	 */
+	public function run()
+	{
+		echo Html::tag('div', '', $this->options);
+		$this->registerWidget('slider', SliderAsset::className());
+	}
+}
\ No newline at end of file

extensions/jui/SliderInput.php

+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\jui;
+
+use yii\helpers\Html;
+
+/**
+ * SliderInput renders a slider jQuery UI widget that writes its value into hidden input.
+ *
+ * For example,
+ *
+ * ```
+ * echo Slider::widget([
+ *     'model' => $model,
+ *     'attrbute' => 'amount',
+ *     'clientOptions' => [
+ *         'min' => 1,
+ *         'max' => 10,
+ *     ],
+ * ]);
+ * ```
+ *
+ * The following example will use the name property instead:
+ *
+ * ```
+ * echo Slider::widget([
+ *     'name' => 'amount',
+ *     'clientOptions' => [
+ *         'min' => 1,
+ *         'max' => 10,
+ *     ],
+ * ]);
+ * ```
+ *
+ * @see http://api.jqueryui.com/slider/
+ * @author Alexander Makarov <sam@rmcreative.ru>
+ * @since 2.0
+ */
+class SliderInput extends InputWidget
+{
+	protected $clientEventsMap = [
+		'change' => 'slidechange',
+		'create' => 'slidecreate',
+		'slide' => 'slide',
+		'start' => 'slidestart',
+		'stop' => 'slidestop',
+	];
+
+	/**
+	 * Executes the widget.
+	 */
+	public function run()
+	{
+		echo Html::tag('div', '', $this->options);
+
+		$inputId = $this->id.'-input';
+		$inputOptions = $this->options;
+		$inputOptions['id'] = $inputId;
+		if ($this->hasModel()) {
+			echo Html::activeHiddenInput($this->model, $this->attribute, $inputOptions);
+		} else {
+			echo Html::hiddenInput($this->name, $this->value, $inputOptions);
+		}
+
+		if (!isset($this->clientEvents['slide'])) {
+			$this->clientEvents['slide'] = 'function(event, ui) {
+				$("#'.$inputId.'").val(ui.value);
+			}';
+		}
+
+		$this->registerWidget('slider', SliderAsset::className());
+		$this->getView()->registerJs('$("#'.$inputId.'").val($("#'.$this->id.'").slider("value"));');
+	}
+}
\ No newline at end of file

extensions/jui/Widget.php

@@ -42,6 +42,11 @@ class Widget extends \yii\base\Widget
 	 */
 	public $clientEvents = [];
 
+	/**
+	 * @var array event names mapped to what should be specified in .on(
+	 * If empty, it is assumed that event passed to clientEvents is prefixed with widget name.
+	 */
+	protected $clientEventsMap = [];
 
 	/**
 	 * Initializes the widget.
@@ -56,32 +61,62 @@ class Widget extends \yii\base\Widget
 	}
 
 	/**
-	 * Registers a specific jQuery UI widget and the related events
-	 * @param string $name the name of the jQuery UI widget
+	 * Registers a specific jQuery UI widget assets
 	 * @param string $assetBundle the asset bundle for the widget
 	 */
-	protected function registerWidget($name, $assetBundle)
+	protected function registerAssets($assetBundle)
 	{
-		$view = $this->getView();
 		/** @var \yii\web\AssetBundle $assetBundle */
-		$assetBundle::register($view);
+		$assetBundle::register($this->getView());
 		/** @var \yii\web\AssetBundle $themeAsset */
 		$themeAsset = static::$theme;
-		$themeAsset::register($view);
+		$themeAsset::register($this->getView());
+	}
 
-		$id = $this->options['id'];
+	/**
+	 * Registers a specific jQuery UI widget options
+	 * @param string $name the name of the jQuery UI widget
+	 */
+	protected function registerClientOptions($name)
+	{
 		if ($this->clientOptions !== false) {
+			$id = $this->options['id'];
 			$options = empty($this->clientOptions) ? '' : Json::encode($this->clientOptions);
 			$js = "jQuery('#$id').$name($options);";
-			$view->registerJs($js);
+			$this->getView()->registerJs($js);
+		}
 	}
 
+	/**
+	 * Registers a specific jQuery UI widget events
+	 * @param string $name the name of the jQuery UI widget
+	 */
+	protected function registerClientEvents($name)
+	{
 		if (!empty($this->clientEvents)) {
+			$id = $this->options['id'];
 			$js = [];
 			foreach ($this->clientEvents as $event => $handler) {
-				$js[] = "jQuery('#$id').on('$name$event', $handler);";
+				if (isset($this->clientEventsMap[$event])) {
+					$eventName = $this->clientEventsMap[$event];
+				} else {
+					$eventName = $name.$event;
 				}
-			$view->registerJs(implode("\n", $js));
+				$js[] = "jQuery('#$id').on('$eventName', $handler);";
 			}
+			$this->getView()->registerJs(implode("\n", $js));
+		}
+	}
+
+	/**
+	 * Registers a specific jQuery UI widget asset bundle, initializes it with client options and registers related events
+	 * @param string $name the name of the jQuery UI widget
+	 * @param string $assetBundle the asset bundle for the widget
+	 */
+	protected function registerWidget($name, $assetBundle)
+	{
+		$this->registerAssets($assetBundle);
+		$this->registerClientOptions($name);
+		$this->registerClientEvents($name);
 	}
 }