'web', 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => '' );
		$args = wp_parse_args($args, $defaults);
		$this->type = $args['type'];
		$this->api = isset($args['api']) ? $args['api'] : array();
		parent::__construct($args);
	}
	/**
	 */
	public function before() {
		if ( !empty($this->api) )
			$this->upgrader->strings['process_success'] = sprintf( __('Successfully installed the plugin %s %s.'), $this->api->name, $this->api->version);
	}
	/**
	 */
	public function after() {
		$plugin_file = $this->upgrader->plugin_info();
		$install_actions = array();
		$from = isset($_GET['from']) ? wp_unslash( $_GET['from'] ) : 'plugins';
		if ( 'import' == $from ) {
			$install_actions['activate_plugin'] = '' . __( 'Activate Plugin & Run Importer' ) . '';
		} else if ( 'press-this' == $from ) {
			$install_actions['activate_plugin'] = '' . __( 'Activate Plugin & Return to Press This' ) . '';
		} else {
			$install_actions['activate_plugin'] = '' . __( 'Activate Plugin' ) . '';
		}
		if ( is_multisite() && current_user_can( 'manage_network_plugins' ) ) {
			$install_actions['network_activate'] = '' . __( 'Network Activate' ) . '';
			unset( $install_actions['activate_plugin'] );
		}
		if ( 'import' == $from ) {
			$install_actions['importers_page'] = '' . __( 'Return to Importers' ) . '';
		} elseif ( $this->type == 'web' ) {
			$install_actions['plugins_page'] = '' . __( 'Return to Plugin Installer' ) . '';
		} elseif ( 'upload' == $this->type && 'plugins' == $from ) {
			$install_actions['plugins_page'] = '' . __( 'Return to Plugin Installer' ) . '';
		} else {
			$install_actions['plugins_page'] = '' . __( 'Return to Plugins page' ) . '';
		}
		if ( ! $this->result || is_wp_error($this->result) ) {
			unset( $install_actions['activate_plugin'], $install_actions['network_activate'] );
		} elseif ( ! current_user_can( 'activate_plugin', $plugin_file ) ) {
			unset( $install_actions['activate_plugin'] );
		}
		/**
		 * Filters the list of action links available following a single plugin installation.
		 *
		 * @since 2.7.0
		 *
		 * @param array  $install_actions Array of plugin action links.
		 * @param object $api             Object containing WordPress.org API plugin data. Empty
		 *                                for non-API installs, such as when a plugin is installed
		 *                                via upload.
		 * @param string $plugin_file     Path to the plugin file.
		 */
		$install_actions = apply_filters( 'install_plugin_complete_actions', $install_actions, $this->api, $plugin_file );
		if ( ! empty( $install_actions ) ) {
			$this->feedback( implode( ' ', (array) $install_actions ) );
		}
	}
}