check_active() )
echo 'SFC is installed and activated!';
else if ( $test->check() )
echo 'SFC is installed, but not activated. Click here to activate the plugin.';
else if ( $install_link = $test->install_link() )
echo 'SFC is not installed. Click here to install the plugin.';
else
echo 'SFC is not installed and could not be found in the Plugin Directory. Please install this plugin manually.';
*/
if (!class_exists('Theme_Plugin_Dependency')) {
class Theme_Plugin_Dependency {
// input information from the theme
var $slug;
var $uri;
// installed plugins and uris of them
private $plugins; // holds the list of plugins and their info
private $uris; // holds just the URIs for quick and easy searching
// both slug and PluginURI are required for checking things
function __construct( $slug, $uri ) {
$this->slug = $slug;
$this->uri = $uri;
if ( empty( $this->plugins ) )
$this->plugins = get_plugins();
if ( empty( $this->uris ) )
$this->uris = wp_list_pluck($this->plugins, 'PluginURI');
// echo '';
// print_r($this->uris);
// echo '
';
}
// return true if installed, false if not
function check() {
return in_array($this->uri, $this->uris);
}
// return true if installed and activated, false if not
function check_active() {
$plugin_file = $this->get_plugin_file();
if ($plugin_file) return is_plugin_active($plugin_file);
return false;
}
// gives a link to activate the plugin
function activate_link() {
$plugin_file = $this->get_plugin_file();
if ($plugin_file) return wp_nonce_url(self_admin_url('plugins.php?action=activate&plugin='.$plugin_file), 'activate-plugin_'.$plugin_file);
return false;
}
// return a nonced installation link for the plugin. checks wordpress.org to make sure it's there first.
function install_link() {
include_once ABSPATH . 'wp-admin/includes/plugin-install.php';
$info = plugins_api('plugin_information', array('slug' => $this->slug ));
if ( is_wp_error( $info ) )
return false; // plugin not available from wordpress.org
return wp_nonce_url(self_admin_url('update.php?action=install-plugin&plugin=' . $this->slug), 'install-plugin_' . $this->slug);
}
// return array key of plugin if installed, false if not, private because this isn't needed for themes, generally
private function get_plugin_file() {
return array_search($this->uri, $this->uris);
}
}
}