78 lines
2.3 KiB
PHP
78 lines
2.3 KiB
PHP
<?php
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/**
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*
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* Copyright 2012-2012 Portugalmail Comunicações S.A (http://www.portugalmail.net/)
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*
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* See the enclosed file LICENCE for license information (GPLv3). If you
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* did not receive this file, see http://www.gnu.org/licenses/gpl-3.0.html.
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*
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* @author Gonçalo Queirós <mail@goncaloqueiros.net>
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*/
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namespace highcharts;
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use highcharts\HighchartJsExpr;
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class HighchartOptionRenderer
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{
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/**
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* Render the options and returns the javascript that
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* represents them
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*
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* @return string The javascript code
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*/
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public static function render($options)
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{
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$jsExpressions = array();
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//Replace any js expression with random strings so we can switch
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//them back after json_encode the options
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$options = static::_replaceJsExpr($options, $jsExpressions);
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//TODO: Check for encoding errors
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$result = json_encode($options);
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//Replace any js expression on the json_encoded string
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foreach ($jsExpressions as $key => $expr) {
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$result = str_replace('"' . $key . '"', $expr, $result);
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}
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return $result;
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}
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/**
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* Replaces any HighchartJsExpr for an id, and save the
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* js expression on the jsExpressions array
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* Based on Zend_Json
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*
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* @param mixed $data The data to analyze
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* @param array &$jsExpressions The array that will hold
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* information about the replaced
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* js expressions
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*/
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private static function _replaceJsExpr($data, &$jsExpressions)
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{
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if (!is_array($data) &&
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!is_object($data)) {
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return $data;
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}
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if (is_object($data)) {
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if ($data instanceof \stdClass) {
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return $data;
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} elseif (!$data instanceof HighchartJsExpr) {
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$data = $data->getValue();
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}
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}
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if ($data instanceof HighchartJsExpr) {
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$magicKey = "____" . count($jsExpressions) . "_" . count($jsExpressions);
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$jsExpressions[$magicKey] = $data->getExpression();
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return $magicKey;
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}
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foreach ($data as $key => $value) {
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$data[$key] = static::_replaceJsExpr($value, $jsExpressions);
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}
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return $data;
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}
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}
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