File widgets/google/WhVisualizationChart.php

 1 <?php
 2 /**
 3  * WhVisualizationChart widget class
 4  * A simple implementation for for Google
 5  *
 6  * @author Antonio Ramirez <amigo.cobos@gmail.com>
 7  * @copyright Copyright &copy; 2amigos.us 2013-
 8  * @license http://www.opensource.org/licenses/bsd-license.php New BSD License
 9  * @package YiiWheels.widgets.google
10  */
11 
12 class WhVisualizationChart extends CWidget
13 {
14     /**
15      * @var string $containerId the container Id to render the visualization to
16      */
17     public $containerId;
18 
19     /**
20      * @var string $visualization the type of visualization -ie PieChart
21      * @see https://google-developers.appspot.com/chart/interactive/docs/gallery
22      */
23     public $visualization;
24 
25     /**
26      * @var array $data the data to configure visualization
27      * @see https://google-developers.appspot.com/chart/interactive/docs/datatables_dataviews#arraytodatatable
28      */
29     public $data = array();
30 
31     /**
32      * @var array $options additional configuration options
33      * @see https://google-developers.appspot.com/chart/interactive/docs/customizing_charts
34      */
35     public $options = array();
36 
37     /**
38      * @var array $htmlOption the HTML tag attributes configuration
39      */
40     public $htmlOptions = array();
41 
42     /**
43      * Widget's run method
44      */
45     public function run()
46     {
47         $id                      = $this->getId();
48         // if no container is set, it will create one
49         if ($this->containerId == null) {
50             $this->htmlOptions['id'] = 'div-chart'.$id;
51             $this->containerId = $this->htmlOptions['id'];
52             echo '<div ' . CHtml::renderAttributes($this->htmlOptions) . '></div>';
53         }
54         $this->registerClientScript();
55     }
56 
57     /**
58      * Registers required scripts
59      */
60     public function registerClientScript()
61     {
62         $id        = $this->getId();
63         $jsData    = CJavaScript::jsonEncode($this->data);
64         $jsOptions = CJavaScript::jsonEncode($this->options);
65 
66         $script = '
67             google.setOnLoadCallback(drawChart' . $id . ');
68             var ' . $id . '=null;
69             function drawChart' . $id . '() {
70                 var data = google.visualization.arrayToDataTable(' . $jsData . ');
71 
72                 var options = ' . $jsOptions . ';
73 
74                 ' . $id . ' = new google.visualization.' . $this->visualization . '(document.getElementById("' . $this->containerId . '"));
75                 ' . $id . '.draw(data, options);
76             }';
77 
78         /** @var $cs CClientScript */
79         $cs = Yii::app()->getClientScript();
80         $cs->registerScriptFile('https://www.google.com/jsapi');
81         $cs->registerScript(
82             __CLASS__ . '#' . $id,
83             'google.load("visualization", "1", {packages:["corechart"]});',
84             CClientScript::POS_HEAD
85         );
86         $cs->registerScript($id, $script, CClientScript::POS_HEAD);
87     }
88 }
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