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<?php
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namespace CMEN\GoogleChartsBundle\GoogleCharts;
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use CMEN\GoogleChartsBundle\Exception\GoogleChartsException;
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/**
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* @author Christophe Meneses
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*/
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class Data
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{
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/**
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* @var array
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*/
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private $arrayToDataTable;
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/**
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* @var boolean
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*/
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private $firstRowIsData;
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/**
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* @return array
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*/
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public function getArrayToDataTable()
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{
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return $this->arrayToDataTable;
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}
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/**
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* This method takes in a two-dimensional array. The data types of each column are interpreted automatically from
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* the data given. If a cell has no value, specify a null or empty value as appropriate. Column data types can also
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* be specified using the object literal notation in the first row (the column header row) of the array
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* (i.e. ['label' => 'Start Date', 'type' => 'date']). Optional data roles may be used as well, but they must be
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* defined explicitly using object literal notation. Object literal notation may also be used for any cell,
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* allowing you to define Cell Objects).
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*
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* @param array $arrayToDataTable A two-dimensional array, where each row represents a row in the data table.
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* @param boolean $firstRowIsData If firstRowIsData is false (the default), the first row will be interpreted
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* as header labels.
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*/
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public function setArrayToDataTable($arrayToDataTable, $firstRowIsData = false)
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{
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$this->arrayToDataTable = $arrayToDataTable;
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$this->firstRowIsData = $firstRowIsData;
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}
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/**
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* Returns Javascript of data.
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*
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* @param string $dataName Variable name who will contain the data Javascript
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*
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* @return string A Javascript string
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*
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* @throws GoogleChartsException
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*/
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public function draw($dataName)
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{
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if (!$this->arrayToDataTable) {
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throw new GoogleChartsException(
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'There is no data for chart. Use method setArrayToDataTable() to provide data.'
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);
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}
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$js = "var $dataName = new google.visualization.arrayToDataTable([";
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end($this->arrayToDataTable);
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$lastKeyRow = key($this->arrayToDataTable);
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foreach ($this->arrayToDataTable as $keyRow => $row) {
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$js .= '[';
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end($row);
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$lastKeyValue = key($row);
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foreach ($row as $key => $value) {
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if ($value instanceof \DateTime) {
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$js .= 'new Date(' . $value->format('Y') . ', ' . ($value->format('n') - 1) . ', ' .
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$value->format('d') . ', ' . $value->format('H') . ', ' . $value->format('i') . ', ' .
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$value->format('s') . ')';
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} else {
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$js .= json_encode($value);
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}
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if ($key != $lastKeyValue) {
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$js .= ', ';
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}
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}
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unset($value);
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$js .= ']';
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if ($keyRow != $lastKeyRow) {
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$js .= ', ';
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}
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}
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unset($row);
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$this->firstRowIsData ? $js .= '], true);' : $js .= '], false);';
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return $js;
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}
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}
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cmen /
CMENGoogleChartsBundle
