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<?php

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/**

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* WPSEO plugin file.

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* @package WPSEO\Admin\Capabilities

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/**

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* Abstract Capability Manager shared code.

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abstract class WPSEO_Abstract_Capability_Manager implements WPSEO_Capability_Manager {

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/**

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* Registered capabilities.

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* @var array

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protected $capabilities = [];

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/**

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* Registers a capability.

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* @param string $capability Capability to register.

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* @param array $roles Roles to add the capability to.

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* @param bool $overwrite Optional. Use add or overwrite as registration method.

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* @return void

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public function register( $capability, array $roles, $overwrite = false ) {

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if ( $overwrite || ! isset( $this->capabilities[ $capability ] ) ) {

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$this->capabilities[ $capability ] = $roles;

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return;

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}

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// Combine configurations.

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$this->capabilities[ $capability ] = array_merge( $roles, $this->capabilities[ $capability ] );

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// Remove doubles.

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$this->capabilities[ $capability ] = array_unique( $this->capabilities[ $capability ] );

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}

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/**

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* Returns the list of registered capabilitities.

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* @return string[] Registered capabilities.

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public function get_capabilities() {

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return array_keys( $this->capabilities );

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}

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/**

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* Returns a list of WP_Role roles.

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* The string array of role names are converted to actual WP_Role objects.

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* These are needed to be able to use the API on them.

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* @param array $roles Roles to retrieve the objects for.

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* @return WP_Role[] List of WP_Role objects.

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protected function get_wp_roles( array $roles ) {

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$wp_roles = array_map( 'get_role', $roles );

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return array_filter( $wp_roles );

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}

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/**

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* Filter capability roles.

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* @param string $capability Capability to filter roles for.

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* @param array $roles List of roles which can be filtered.

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* @return array Filtered list of roles for the capability.

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protected function filter_roles( $capability, array $roles ) {

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/**

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* Filter: Allow changing roles that a capability is added to.

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* @param array $roles The default roles to be filtered.

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$filtered = apply_filters( $capability . '_roles', $roles );

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// Make sure we have the expected type.

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if ( ! is_array( $filtered ) ) {

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return [];

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}

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return $filtered;

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}

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}

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