/**
* Filter an array of Shortcode attributes.
*
* Shortcodes have limited attributes and possibly limited values
* for some attributes. This method matches each submitted attr
* to its limited values if available, and apply a filter to the
* value before returning the array.
*
* @since 1.1.0
*
* @param string $shortcode Shortcode's ID
* @param array $atts Attributes to filter
* @param array $defaults Default attributes if needed
*
* @return array Filtered Attributes
*/
public static function filter_shortcode_atts($shortcode, $atts = array(), $defaults = array())
{
if (!is_array($atts)) {
$atts = array($atts);
}
if (empty($defaults)) {
$defaults = WPMOLY_Settings::get_available_shortcodes();
$defaults = $defaults[$shortcode]['atts'];
}
$attributes = array();
// Loop through the Shortcode's attributes
foreach ($defaults as $slug => $default) {
if (isset($atts[$slug])) {
$attr = $atts[$slug];
// Attribute is not null
if (is_null($attr)) {
$attributes[$slug] = $default['default'];
} else {
if (!is_null($attr)) {
$value = $attr;
// Attribute has limited values
if (!is_null($default['values'])) {
// Value should be boolean
if ('boolean' == $default['values'] && in_array(strtolower($attr), array('true', 'false', 'yes', 'no'))) {
$value = wpmoly_is_boolean($attr);
} else {
if (is_array($default['values'])) {
// multiple values
if (false !== strpos($attr, '|')) {
$value = str_replace('actors', 'cast', $attr);
$value = explode('|', $value);
foreach ($value as $i => $v) {
if (!in_array($v, $default['values'])) {
unset($value[$i]);
}
}
array_unique($value);
} else {
if (in_array(strtolower($attr), $default['values'])) {
$value = $attr;
}
}
}
}
}
// Attribute has a valid filter
if (is_string($value) && function_exists($default['filter']) && is_callable($default['filter'])) {
$value = call_user_func($default['filter'], $value);
}
$attributes[$slug] = $value;
}
}
} else {
$attributes[$slug] = $default['default'];
}
}
return $attributes;
}
