/
ActiveHighstockWidget.php
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/
ActiveHighstockWidget.php
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<?php
/**
* ActiveHighstockWidget class file.
*
* @author David Baker <github@acorncomputersolutions.com>
* @link https://github.com/miloschuman/yii-highcharts/
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
require_once(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'HighstockWidget.php');
/**
* Usage:
*
$this->widget('highcharts.ActiveHighstockWidget', array(
'options' => array(
'title' => array('text' => 'Site Percentile'),
'yAxis' => array(
'title' => array('text' => 'Site Rank')
),
'series' => array(
array(
'name' => 'Site percentile',
'data' => 'SiteRank12', // data column in the dataprovider
'time' => 'RankDate', // time column in the dataprovider
// 'timeType' => 'date',
// defaults to a mysql timestamp, other options are 'date' (run through strtotime()) or 'plain'
),
array(
'name' => 'Site percentile',
'time' => 'RankDate', // time column in the dataprovider
'type' => 'arearange',
'removeNulls' => true,
'data' => array(
'Column1', // specify an array of data options
'Column2', // if you are using an area range charts
),
),
),
),
'dataProvider' => $dataProvider,
));
*
* @see HighchartsWidget for additional options
*/
class ActiveHighstockWidget extends HighstockWidget
{
/**
* Pass in a data provider that we will turn into the series
*
* @var CDataProvider
*/
public $dataProvider;
public function run()
{
$data = $this->dataProvider->getData();
$series = $this->options['series'];
if (count($data) > 0) {
foreach ($series as $i => $batch) {
if (isset($batch['time']) && isset($batch['data']) &&
!is_array($batch['time'])
) {
$dateSeries = array();
foreach ($data as $row) {
if($this->shouldRemoveNullValues($series[$i], $row)) {
continue;
}
$dateSeries[] = $this->processRow($row, $batch);
}
// we'll work on the actual item, this may be PHP 5.3+ specific
$this->sortDateSeries($dateSeries);
// clean up our time item so we don't accidentally conflict with Highstock
unset($this->options['series'][$i]['time']);
// and then reset our data column with our data series
$this->options['series'][$i]['data'] = $dateSeries;
}
}
}
parent::run();
}
/**
* Checks whether we want to remove null values from a series
*
* @param $series
* @param $row
*
* @return bool
*/
private function shouldRemoveNullValues($series, $row)
{
if(isset($series['removeNulls']) && $series['removeNulls'] == true) {
if($row[$series['data']] == null) {
return true;
}
}
return false;
}
/**
* Handles processing a row and readying it for Highstock
*
* @param $row
* @param $batch
* @throws Exception
* @return array
*/
protected function processRow($row, $batch)
{
// if we're dealing with a javascript timestamp
// then just setup our array
$timeType = (isset($batch['timeType'])) ? $batch['timeType'] : 'mysql';
switch ($timeType) {
case 'plain':
$time = $this->processPlainTimestamp($row, $batch);
break;
case 'date':
$time = $this->processDateString($row, $batch);
break;
case 'mysql':
$time = $this->processMysqlTimestamp($row, $batch);
break;
default:
$functionName = 'process' . ucfirst($timeType);
if (method_exists($this, $functionName)) {
return call_user_func(array($this, $functionName), $row, $batch);
} else {
throw new Exception("Can't call your custom date processing function");
}
}
// process our data by running it through our data processing method
$data = $this->processData($row, $batch);
// push our data value on the front of what may be multiple data values
array_unshift($data, $time);
return $data;
}
/**
* Cleans up the data column so Highstock is happy
*
* @param $row
* @param $batch
* @return array
*/
protected function processData($row, $batch)
{
if(!is_array($batch['data'])) {
return array($this->processDataValue($row[$batch['data']]));
}
$items = array();
foreach($batch['data'] as $item) {
$items[] = $this->processDataValue($row[$item]);
}
return $items;
}
/**
* Using this means your time needs to be in JS milliseconds
*
* @param $row
* @param $batch
* @return array
*/
protected function processPlainTimestamp($row, $batch)
{
return floatval($row[$batch['time']]);
}
/**
* Converts dates using strtotime() to a MySQL timestamp and then changes to JS milliseconds
*
* @param $row
* @param $batch
* @return array
*/
protected function processDateString($row, $batch)
{
return 1000 * floatval(strtotime($row[$batch['time']]));
}
/**
* Converts a SQL unix timestamp to a JS timestamp (in milliseconds)
* This is our default time processor if not specified
*
* @param $row
* @param $batch
* @return array
*/
protected function processMysqlTimestamp($row, $batch)
{
return 1000 * floatval($row[$batch['time']]);
}
/**
* Sorts our date series so we have all the dates from first to last
*
* @param $series
*/
protected function sortDateSeries(&$series)
{
$dates = array();
//sort by first column (dates ascending order)
foreach ($series as $key => $row) {
$dates[$key] = $row[0];
}
array_multisort($dates, SORT_ASC, $series);
}
/**
* Highstocks won't graph a value if we have a null for it.
* We want to make sure we don't cast nulls to 0 using floatval,
* so we check here to make sure the value should be converted to
* a float before we do anything.
*
* @param $value
* @return float|null
*/
protected function processDataValue($value)
{
return ($value === null) ? null : floatval($value);
}
}