added progress widget

framework/yii/bootstrap/Progress.php

+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\bootstrap;
+
+use yii\base\InvalidConfigException;
+use yii\helpers\base\ArrayHelper;
+use yii\helpers\Html;
+
+
+/**
+ * Progress renders a bootstrap progress bar component.
+ *
+ * For example,
+ *
+ * ```php
+ * // default with label
+ * echo Progress::widget(array(
+ *     'percent' => 60,
+ *     'label' => 'test',
+ * ));
+ *
+ * // styled
+ * echo Progress::widget(array(
+ *     'percent' => 65,
+ *     'barOptions' => array('class' => 'bar-danger')
+ * ));
+ *
+ * // striped
+ * echo Progress::widget(array(
+ *     'percent' => 70,
+ *     'barOptions' => array('class' => 'bar-warning'),
+ *     'options' => array('class' => 'progress-striped')
+ * ));
+ *
+ * // striped animated
+ * echo Progress::widget(array(
+ *     'percent' => 70,
+ *     'barOptions' => array('class' => 'bar-success'),
+ *     'options' => array('class' => 'active progress-striped')
+ * ));
+ *
+ * // stacked and one with label
+ * echo Progress::widget(array(
+ *     'stacked' => array(
+ *         array('percent' => 30, 'options' => array('class' => 'bar-danger')),
+ *         array('label'=>'test', 'percent' => 30, 'options' => array('class' => 'bar-success')),
+ *         array('percent' => 35, 'options' => array('class' => 'bar-warning'))
+ *     )
+ * ));
+ * ```
+ * @see http://twitter.github.io/bootstrap/components.html#progress
+ * @author Antonio Ramirez <amigo.cobos@gmail.com>
+ * @since 2.0
+ */
+class Progress extends Widget
+{
+	/**
+	 * @var string the button label
+	 */
+	public $label;
+	/**
+	 * @var integer the amount of progress as a percentage.
+	 */
+	public $percent = 0;
+	/**
+	 * @var array the HTML attributes of the
+	 */
+	public $barOptions = array();
+	/**
+	 * @var array $stacked set to an array of progress bar values to display stacked progress bars
+	 *
+	 * ```php
+	 *  'stacked'=>array(
+	 *      array('percent'=>'30', 'options'=>array('class'=>'custom')),
+	 *      array('percent'=>'30'),
+	 *  )
+	 * ```
+	 */
+	public $stacked = false;
+
+
+	/**
+	 * Initializes the widget.
+	 * If you override this method, make sure you call the parent implementation first.
+	 */
+	public function init()
+	{
+		if ($this->label === null && $this->stacked == false) {
+			throw new InvalidConfigException("The 'percent' option is required.");
+		}
+		parent::init();
+		$this->addCssClass($this->options, 'progress');
+		$this->getView()->registerAssetBundle(static::$responsive ? 'yii/bootstrap/responsive' : 'yii/bootstrap');
+	}
+
+	/**
+	 * Renders the widget.
+	 */
+	public function run()
+	{
+		echo Html::beginTag('div', $this->options) . "\n";
+		echo $this->renderProgress() . "\n";
+		echo Html::endTag('div') . "\n";
+	}
+
+	/**
+	 * Generates a bar
+	 * @param int $percent the percentage of the bar
+	 * @param string $label, optional, the label to display at the bar
+	 * @param array $options the HTML attributes of the bar
+	 * @return string the rendering result.
+	 */
+	public function bar($percent, $label = '', $options = array())
+	{
+		$this->addCssClass($options, 'bar');
+		$options['style'] = "width:{$percent}%";
+		return Html::tag('div', $label, $options);
+	}
+
+	/**
+	 * @return string the rendering result.
+	 * @throws InvalidConfigException
+	 */
+	protected function renderProgress()
+	{
+		if ($this->stacked === false) {
+			return $this->bar($this->percent, $this->label, $this->barOptions);
+		}
+		$bars = array();
+		foreach ($this->stacked as $item) {
+			$label = ArrayHelper::getValue($item, 'label', '');
+			if (!isset($item['percent'])) {
+				throw new InvalidConfigException("The 'percent' option is required.");
+			}
+			$options = ArrayHelper::getValue($item, 'options', array());
+
+			$bars[] = $this->bar($item['percent'], $label, $options);
+		}
+		return implode("\n", $bars);
+	}
+
+}
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