BP_Group_Extension::setup_access_settings()

	protected function setup_access_settings() {

		// Bail if no group ID is available.
		if ( empty( $this->group_id ) ) {
			return;
		}

		// Backward compatibility.
		if ( isset( $this->params['enable_nav_item'] ) ) {
			$this->enable_nav_item = (bool) $this->params['enable_nav_item'];
		}

		// Tab Access.
		$this->user_can_visit = false;

		// Backward compatibility for components that do not provide
		// explicit 'access' parameter.
		if ( empty( $this->params['access'] ) ) {
			if ( false === $this->params['enable_nav_item'] ) {
				$this->params['access'] = 'noone';
			} else {
				$group = groups_get_group( $this->group_id );

				if ( ! empty( $group->status ) && 'public' === $group->status ) {
					// Tabs in public groups are accessible to anyone by default.
					$this->params['access'] = 'anyone';
				} else {
					// All other groups have members-only as the default.
					$this->params['access'] = 'member';
				}
			}
		}

		// Parse multiple access conditions into an array.
		$access_conditions = $this->params['access'];
		if ( ! is_array( $access_conditions ) ) {
			$access_conditions = explode( ',', $access_conditions );
		}

		// If the current user meets at least one condition, the
		// get access.
		foreach ( $access_conditions as $access_condition ) {
			if ( $this->user_meets_access_condition( $access_condition ) ) {
				$this->user_can_visit = true;
				break;
			}
		}

		// Tab Visibility.
		$this->user_can_see_nav_item = false;

		// Backward compatibility for components that do not provide
		// explicit 'show_tab' parameter.
		if ( empty( $this->params['show_tab'] ) ) {
			if ( false === $this->params['enable_nav_item'] ) {
				// The enable_nav_item index is only false if it's been
				// defined explicitly as such in the
				// constructor. So we always trust this value.
				$this->params['show_tab'] = 'noone';

			} elseif ( isset( $this->params_raw['enable_nav_item'] ) || isset( $this->params_raw['visibility'] ) ) {
				// If enable_nav_item or visibility is passed,
				// we assume this  is a legacy extension.
				// Legacy behavior is that enable_nav_item=true +
				// visibility=private implies members-only.
				if ( 'public' !== $this->visibility ) {
					$this->params['show_tab'] = 'member';
				} else {
					$this->params['show_tab'] = 'anyone';
				}

			} else {
				// No show_tab or enable_nav_item value is
				// available, so match the value of 'access'.
				$this->params['show_tab'] = $this->params['access'];
			}
		}

		// Parse multiple access conditions into an array.
		$access_conditions = $this->params['show_tab'];
		if ( ! is_array( $access_conditions ) ) {
			$access_conditions = explode( ',', $access_conditions );
		}

		// If the current user meets at least one condition, the
		// get access.
		foreach ( $access_conditions as $access_condition ) {
			if ( $this->user_meets_access_condition( $access_condition ) ) {
				$this->user_can_see_nav_item = true;
				break;
			}
		}
	}