/**
* Draw Legend, if required by the user on the desired position
*
* This is a special method for pie charts. The legend for pie charts uses a
* different datastructure. We can use the special drawPieLegend method of
* the pChart class, but we cannot retrieve the size of that legend for
* positioning. For that reason, the structure is changed
*/
public function drawLegend()
{
$args = $this->chartArgs;
// Backup the original datadescription structure
$original = $this->pDataDescription;
$this->pDataDescription = $this->pieLegendDataDescription;
// Draw the legend
parent::drawLegend();
// Put the original datadescription back into place
$this->pDataDescription = $original;
}
/**
* Returns the default properties for radar graphs
*
* @returns Array Associative array with default properties.
*/
public function getDefaultArgs()
{
$args = parent::getDefaultArgs();
// Set radar-specific default arguments
$args["filled"] = false;
$args["striped"] = false;
$args["stripecolor"] = array(200, 200, 200);
$args["opacity"] = 50;
// Check whether the user has set defaults in the LocalSettings.php file
$name = "wgPChart4mw" . ucfirst($this->type) . "Defaults";
if (array_key_exists($name, $GLOBALS)) {
$args = $this->parseArgs($GLOBALS[$name], $args);
}
return $args;
}
/**
* Renders the chart as a parser function
*
* @param String Class name to render the chart
* @param Object The parent parser; more advanced extensions use this to obtain the contextual Title,
* parse wiki text, expand braces, register link relationships and dependencies etc.
* @return String HTML output with the chart
*/
public static function renderParserFunction()
{
// If no className and parser is given, return false
if (func_num_args() < 2) {
return false;
}
$className = func_get_arg(0);
$parser = func_get_arg(1);
// Walk through all other parameters
$data = '';
$args = array();
for ($i = 2; $i < func_num_args(); $i++) {
list($key, $value) = pChart4mw::parseParserFunctionArguments(func_get_arg($i));
if ($key == 'data') {
$data = $value;
} else {
$args[$key] = $value;
}
}
// Call the base method and return the HTML code. The parameters noparse and isHTML are set
// because otherwise the returned code is not handled as HTML code. See http://www.mediawiki.org/wiki/Manual:Parser_functions
return array(call_user_func(array($className, 'render'), $data, $args, $parser), 'noparse' => true, 'isHTML' => true);
}
