/webcore/ext/google/webcore.google.visualization.php

<?php

/**

 * Represents a common control in a Google Visualization

 *

 * @package WebCore

 * @subpackage Google

 */

class GVizControl extends ControlModelBase implements IRootModel, IBindingTarget

{

    const TYPE_IMAGESPARKLINE = 'imagesparkline';

    const TYPE_AREACHART = 'areachart';

    const TYPE_PIECHART = 'piechart';

    const TYPE_COLUMNCHART = 'columnchart';

    const TYPE_LINECHART = 'linechart';

    const TYPE_BARCHART = 'barchart';

    

    const OPTION_IS_STACKED = 'isStacked';

    const OPTION_IS_3D = 'is3D';

    const OPTION_SHOW_VALUE_LABELS = 'showValueLabels';

    const OPTION_ENABLE_TOOLTIP = 'enableTooltip';

    const OPTION_SHOW_CATEGORIES = 'showCategories';

    const OPTION_WIDTH = 'width';

    const OPTION_HEIGHT = 'height';

    

    protected $caption;

    protected $type;

    protected $columns;

    protected $dataSource;

    protected $options;

    

    public function __construct($name, $caption, $type = 'barchart')

    {

        parent::__construct($name, true);

        

        $this->caption = $caption;

        $this->type    = $type;

        $this->options = new KeyedCollection();

        $this->setOption(self::OPTION_HEIGHT, 320);

        $this->setOption(self::OPTION_WIDTH, 500);

        $this->setOption(self::OPTION_IS_STACKED, true);

        $this->setOption(self::OPTION_IS_3D, true);

    }

    

    /**

     * Get visualization type

     *

     * @return string

     */

    public function getVizType()

    {

        return $this->type;

    }

    

    public function getColumns()

    {

        return $this->columns;

    }

    

    public function getDataSource()

    {

        return $this->dataSource;

    }

    

    /**

     * Gets caption

     *

     * @return string

     */

    public function getCaption()

    {

        return $this->caption;

    }

    

    public function setCaption($value)

    {

        $this->caption = $value;

    }

    

    /**

     * Sets an option for the Chart

     *

     * @param string $option. One of the OPTION_* prefixed constants

     * @param bool $value

     */

    public function setOption($option, $value)

    {

        $this->options->setValue($option, $value);

    }

    

    /**

     * Gets the options

     */

    public function getOptions()

    {

        return $this->options;

    }

    

    /**

     * @param IndexedCollection $dataSource

     */

    public function dataBind(&$dataSource)

    {

        if ($dataSource->isEmpty())

            return;

        

        $this->columns = array();

        

        foreach ($dataSource->getItem(0) as $key => $value)

        {

            if (is_object($value))

                $scalar = $value->getValue();

            else

                $scalar = $value;

            

            if (is_float($scalar) || is_int($scalar))

                $this->columns[] = array(

                    'id' => $key,

                    'type' => 'number'

                );

            else

                $this->columns[] = array(

                    'id' => $key,

                    'type' => 'string'

                );

        }

        

        foreach ($dataSource as $item)

        {

            $arr = array();

            

            foreach ($item as $key => $value)

            {

                $scalar = is_object($value) ? $value->getValue() : $value;

                

                $arr[] = $scalar;

            }

            

            $this->dataSource[] = $arr;

        }

    }

    

    /**

     * Creates a default instance of this class

     *

     * @return GVizControl

     */

    public static function createInstance()

    {

        return new GVizControl('ISerializable', 'ISerializable');

    }

}



/**

 * Represents a Google Chart view

 * 

 * @package WebCore

 * @subpackage Google

 */

class GChartView extends HtmlViewBase

{

    /**

     * Creates a new instance of this class based on a Google Visualization model

     *

     * @param GVizControl $model

     */

    public function __construct(&$model)

    {

        parent::__construct($model);

        $this->cssClass       = 'vizview';

        $this->frameWidth     = "auto";

        $this->isAsynchronous = true;

        $callbacks =& $this->renderCallbacks->getArrayReference();

        

        // Setup the callbacks for each renderable model

        $callbacks['GVizControl'] = array(

            'GVizRenderCallbacks',

            'renderGChartControl'

        );

        

        $this->registerDependencies();

    }

    

    /**

     * Registers model resources and dependencies on the client-side

     *

     */

    protected function registerDependencies()

    {

        //self::registerCommonDependecies();

    }

}



/**

 * Represents a Google Visualization view

 *

 * @package WebCore

 * @subpackage Google

 */

class GVizView extends HtmlViewBase

{

    /**

     * Creates a new instance of this class based on a Google Visualization model

     *

     * @param GVizControl $model

     */

    public function __construct(&$model)

    {

        parent::__construct($model);

        $this->cssClass       = 'vizview';

        $this->frameWidth     = "auto";

        $this->isAsynchronous = true;

        $callbacks =& $this->renderCallbacks->getArrayReference();

        

        // Setup the callbacks for each renderable model

        $callbacks['GVizControl'] = array(

            'GVizRenderCallbacks',

            'renderGVizControl'

        );

        

        $this->registerDependencies();

    }

    

    /**

     * Registers model resources and dependencies on the client-side

     *

     */

    protected function registerDependencies()

    {

        self::registerCommonDependecies();

        

        $formviewPath = HttpContext::getLibraryRoot() . 'ext/google/google.vizview.js';

        $cssPath      = HttpContext::getLibraryRoot() . 'ext/google/google.vizview.css';

        

        HtmlViewManager::registerDependency(HtmlDependency::TYPE_JS_FILE, __CLASS__, 'HtmlVizView.Js', $formviewPath);

        HtmlViewManager::registerDependency(HtmlDependency::TYPE_CSS_FILE, __CLASS__, 'HtmlVizView.Css', $cssPath);

        

        $googleAPIPath = 'http://www.google.com/jsapi';

        HtmlViewManager::registerDependency(HtmlDependency::TYPE_JS_FILE, __CLASS__, 'GoogleAPI.Js', $googleAPIPath);

        

        

        $jsViz          = "gVizView_" . $this->model->getName();

        $jsVizContainer = HtmlViewBase::getHtmlId($this->model) . "_content";

        $jsData         = json_encode($this->model->getDataSource());

        $jsColumns      = json_encode($this->model->getColumns());

        $jsVizType      = $this->model->getVizType();

        $jsVizOptions   = json_encode($this->model->getOptions()->getArrayReference());

        

        $javascript = "var $jsViz = new GVizView('$jsVizContainer', '$jsVizType', $jsVizOptions); {$jsViz}.setColumns('$jsColumns'); {$jsViz}.setData('$jsData'); {$jsViz}.draw();";

        HtmlViewManager::registerDependency(HtmlDependency::TYPE_JS_BLOCK, $this->model->getName(), 'gViz_' . $this->model->getName(), $javascript);

    }

}



/**

 * Contains static callback methods to render Google Visualization

 *

 * @package WebCore

 * @subpackage Google

 */

class GVizRenderCallbacks extends HtmlRenderCallbacks

{

    /**

     * Renders the main control as static chart

     *

     * @param GVizControl $model

     * @param GVizView $view

     */

    public static function renderGChartControl(&$model, &$view)

    {

        $tw = HtmlWriter::getInstance();

        

        $legends = array();

        $data    = array();

        

        foreach ($model->getDataSource() as $item)

        {

            $legends[] = $item[0];

            $data[]    = $item[1];

        }

        

        $url = "http://chart.apis.google.com/chart?";

        $url .= "cht=p3"; // Change for type

        $url .= "&chs=600x500";

        $url .= "&chl=" . implode("|", $legends);

        $url .= "&chd=t:" . implode(",", $data);

        

        $tw->openImg();

        $tw->addAttribute('src', $url);

        $tw->closeImg();

    }

    

    /**

     * Renders the main control

     *

     * @param GVizControl $model

     * @param GVizView $view

     */

    public static function renderGVizControl(&$model, &$view)

    {

        $tw = HtmlWriter::getInstance();

        

        $tw->openForm();

        $tw->addAttribute('name', $model->getName());

        $tw->addAttribute('action', HttpContext::getInfo()->getScriptVirtualPath());

        $tw->addAttribute('method', 'post');

        $tw->addAttribute('id', HtmlViewBase::getHtmlId($model));

        $tw->addAttribute('class', $view->getCssClass());

        

        $tw->openDiv();

        $tw->addAttribute('class', $view->getMasterCssClass() . '-caption');

        $tw->writeContent($model->getCaption());

        $tw->closeDiv();

        

        $tw->openDiv();

        $tw->addAttribute('id', HtmlViewBase::getHtmlId($model) . '_content');

        $tw->addAttribute('class', $view->getCssClass() . '-content');

        

        $tw->openDiv();

        $tw->addAttribute('id', $model->getName() . '_viz');

        $tw->addAttribute('type', $model->getVizType());

        $tw->addAttribute('class', $view->getCssClass() . '-viz');

        $tw->writeContent('');

        $tw->closeDiv();

        

        self::renderPostBackFlag($model, $view);

        $tw->closeDiv();

        

        $tw->closeForm();

        

        //self::renderInitializationScript($javascript);

    }

}

?>