1: <?php
 2: /**
 3:  * TbScrollspy class file.
 4:  * @author Christoffer Niska <[email protected]>
 5:  * @copyright Copyright &copy; Christoffer Niska 2013-
 6:  * @license http://www.opensource.org/licenses/bsd-license.php New BSD License
 7:  * @package bootstrap.widgets
 8:  */
 9: 
10: Yii::import('bootstrap.behaviors.TbWidget');
11: 
12: /**
13:  * Bootstrap scrollspy widget.
14:  * @see http://twitter.github.com/bootstrap/javascript.html#scrollspy
15:  */
16: class TbScrollspy extends CWidget
17: {
18:     /**
19:      * @var string the CSS selector for the scrollspy element.
20:      */
21:     public $selector = 'body';
22:     /**
23:      * @var string the CSS selector for the spying element.
24:      */
25:     public $target;
26:     /**
27:      * @var integer the scroll offset (in pixels).
28:      */
29:     public $offset;
30:     /**
31:      * @var string[] $events the JavaScript event configuration (name=>handler).
32:      */
33:     public $events = array();
34: 
35:     /**
36:      * Initializes the widget.
37:      */
38:     public function init()
39:     {
40:         $this->attachBehavior('TbWidget', new TbWidget);
41:     }
42: 
43:     /**
44:      * Runs the widget.
45:      */
46:     public function run()
47:     {
48:         // todo: think of a better way of doing this.
49:         $script = "jQuery('{$this->selector}').attr('data-spy', 'scroll');";
50:         if (isset($this->target)) {
51:             $script .= "jQuery('{$this->selector}').attr('data-target', '{$this->target}');";
52:         }
53:         if (isset($this->offset)) {
54:             $script .= "jQuery('{$this->selector}').attr('data-offset', '{$this->offset}');";
55:         }
56:         Yii::app()->clientScript->registerScript($this->getId(), $script, CClientScript::POS_BEGIN);
57:         $this->registerEvents($this->selector, $this->events);
58:     }
59: }
60: