/**
* Return the mobile version of the current URL if the user is on a mobile device
* and might want to switch over. Return false when not on a mobile device.
*
* @return string
*/
public function __invoke()
{
// Do nothing special if we're not on a mobile device or no mobile theme is
// enabled:
if (!Mobile::enabled() || !Mobile::detect()) {
return false;
}
$urlHelper = $this->getView()->plugin('serverurl');
$currentUrl = rtrim($urlHelper(true), '?');
$currentUrl .= strstr($currentUrl, '?') ? '&' : '?';
return $currentUrl .= 'ui=mobile';
}
/**
* Support method for init() -- figure out which theme option is active.
*
* @param Request $request Request object (for obtaining user parameters).
*
* @return string
*/
protected function pickTheme(Request $request)
{
// Load standard configuration options:
$standardTheme = $this->config->Site->theme;
$mobileTheme = isset($this->config->Site->mobile_theme) ? $this->config->Site->mobile_theme : false;
// Find out if the user has a saved preference in the POST, URL or cookies:
$selectedUI = $request->getPost()->get('ui', $request->getQuery()->get('ui', isset($request->getCookie()->ui) ? $request->getCookie()->ui : null));
if (empty($selectedUI)) {
$selectedUI = $mobileTheme && Mobile::detect() ? 'mobile' : 'standard';
}
// Save the current setting to a cookie so it persists:
$_COOKIE['ui'] = $selectedUI;
setcookie('ui', $selectedUI, null, '/');
// Do we have a valid mobile selection?
if ($mobileTheme && $selectedUI == 'mobile') {
return $mobileTheme;
}
// Do we have a non-standard selection?
if ($selectedUI != 'standard' && isset($this->config->Site->alternate_themes)) {
// Check the alternate theme settings for a match:
$parts = explode(',', $this->config->Site->alternate_themes);
foreach ($parts as $part) {
$subparts = explode(':', $part);
if (trim($subparts[0]) == trim($selectedUI) && isset($subparts[1]) && !empty($subparts[1])) {
return $subparts[1];
}
}
}
// If we got this far, we either have a standard option or the user chose
// an invalid non-standard option; either way, we need to default to the
// standard theme:
return $standardTheme;
}
