bp_is_current_component( string $component = '' )

function bp_is_current_component( $component = '' ) {

	// Default is no match. We'll check a few places for matches.
	$is_current_component = false;

	// Always return false if a null value is passed to the function.
	if ( empty( $component ) ) {
		return false;
	}

	// Backward compatibility: 'xprofile' should be read as 'profile'.
	if ( 'xprofile' === $component ) {
		$component = 'profile';
	}

	$bp = buddypress();

	// Only check if BuddyPress found a current_component.
	if ( ! empty( $bp->current_component ) ) {

		// First, check to see whether $component_name and the current
		// component are a simple match.
		if ( $bp->current_component == $component ) {
			$is_current_component = true;

		// Since the current component is based on the visible URL slug let's
		// check the component being passed and see if its root_slug matches.
		} elseif ( isset( $bp->{$component}->root_slug ) && $bp->{$component}->root_slug == $bp->current_component ) {
			$is_current_component = true;

		// Because slugs can differ from root_slugs, we should check them too.
		} elseif ( isset( $bp->{$component}->slug ) && $bp->{$component}->slug == $bp->current_component ) {
			$is_current_component = true;

		// Next, check to see whether $component is a canonical,
		// non-translatable component name. If so, we can return its
		// corresponding slug from $bp->active_components.
		} elseif ( $key = array_search( $component, $bp->active_components ) ) {
			if ( strstr( $bp->current_component, $key ) ) {
				$is_current_component = true;
			}

		// If we haven't found a match yet, check against the root_slugs
		// created by $bp->pages, as well as the regular slugs.
		} else {
			foreach ( $bp->active_components as $id ) {
				// If the $component parameter does not match the current_component,
				// then move along, these are not the droids you are looking for.
				if ( empty( $bp->{$id}->root_slug ) || $bp->{$id}->root_slug != $bp->current_component ) {
					continue;
				}

				if ( $id == $component ) {
					$is_current_component = true;
					break;
				}
			}
		}
	}

	/**
	 * Filters whether the current page belongs to the specified component.
	 *
	 * @since BuddyPress 1.5.0
	 *
	 * @param bool   $is_current_component Whether or not the current page belongs to specified component.
	 * @param string $component            Name of the component being checked.
	 */
	return apply_filters( 'bp_is_current_component', $is_current_component, $component );
}