WP_Plugins_List_Table::prepare_items()

	public function prepare_items() {
		global $status, $plugins, $totals, $page, $orderby, $order, $s;

		wp_reset_vars( array( 'orderby', 'order' ) );

		/**
		 * Filters the full array of plugins to list in the Plugins list table.
		 *
		 * @since WP-3.0.0
		 *
		 * @see get_plugins()
		 *
		 * @param array $all_plugins An array of plugins to display in the list table.
		 */
		$all_plugins = apply_filters( 'all_plugins', get_plugins() );

		$plugins = array(
			'all'                => $all_plugins,
			'search'             => array(),
			'active'             => array(),
			'inactive'           => array(),
			'recently_activated' => array(),
			'upgrade'            => array(),
			'mustuse'            => array(),
			'dropins'            => array(),
		);

		$screen = $this->screen;

		if ( ! is_multisite() || ( $screen->in_admin( 'network' ) && current_user_can( 'manage_network_plugins' ) ) ) {

			/**
			 * Filters whether to display the advanced plugins list table.
			 *
			 * There are two types of advanced plugins - must-use and drop-ins -
			 * which can be used in a single site or Multisite network.
			 *
			 * The $type parameter allows you to differentiate between the type of advanced
			 * plugins to filter the display of. Contexts include 'mustuse' and 'dropins'.
			 *
			 * @since WP-3.0.0
			 *
			 * @param bool   $show Whether to show the advanced plugins for the specified
			 *                     plugin type. Default true.
			 * @param string $type The plugin type. Accepts 'mustuse', 'dropins'.
			 */
			if ( apply_filters( 'show_advanced_plugins', true, 'mustuse' ) ) {
				$plugins['mustuse'] = get_mu_plugins();
			}

			/** This action is documented in wp-admin/includes/class-wp-plugins-list-table.php */
			if ( apply_filters( 'show_advanced_plugins', true, 'dropins' ) )
				$plugins['dropins'] = get_dropins();

			if ( current_user_can( 'update_plugins' ) ) {
				$current = get_site_transient( 'update_plugins' );
				foreach ( (array) $plugins['all'] as $plugin_file => $plugin_data ) {
					if ( isset( $current->response[ $plugin_file ] ) ) {
						$plugins['all'][ $plugin_file ]['update'] = true;
						$plugins['upgrade'][ $plugin_file ] = $plugins['all'][ $plugin_file ];
					}
				}
			}
		}

		if ( ! $screen->in_admin( 'network' ) ) {
			$show = current_user_can( 'manage_network_plugins' );
			/**
			 * Filters whether to display network-active plugins alongside plugins active for the current site.
			 *
			 * This also controls the display of inactive network-only plugins (plugins with
			 * "Network: true" in the plugin header).
			 *
			 * Plugins cannot be network-activated or network-deactivated from this screen.
			 *
			 * @since WP-4.4.0
			 *
			 * @param bool $show Whether to show network-active plugins. Default is whether the current
			 *                   user can manage network plugins (ie. a Super Admin).
			 */
			$show_network_active = apply_filters( 'show_network_active_plugins', $show );
		}

		set_transient( 'plugin_slugs', array_keys( $plugins['all'] ), DAY_IN_SECONDS );

		if ( $screen->in_admin( 'network' ) ) {
			$recently_activated = get_site_option( 'recently_activated', array() );
		} else {
			$recently_activated = get_option( 'recently_activated', array() );
		}

		foreach ( $recently_activated as $key => $time ) {
			if ( $time + WEEK_IN_SECONDS < time() ) {
				unset( $recently_activated[$key] );
			}
		}

		if ( $screen->in_admin( 'network' ) ) {
			update_site_option( 'recently_activated', $recently_activated );
		} else {
			update_option( 'recently_activated', $recently_activated );
		}

		$plugin_info = get_site_transient( 'update_plugins' );

		foreach ( (array) $plugins['all'] as $plugin_file => $plugin_data ) {
			// Extra info if known. array_merge() ensures $plugin_data has precedence if keys collide.
			if ( isset( $plugin_info->response[ $plugin_file ] ) ) {
				$plugins['all'][ $plugin_file ] = $plugin_data = array_merge( (array) $plugin_info->response[ $plugin_file ], $plugin_data );
				// Make sure that $plugins['upgrade'] also receives the extra info since it is used on ?plugin_status=upgrade
				if ( isset( $plugins['upgrade'][ $plugin_file ] ) ) {
					$plugins['upgrade'][ $plugin_file ] = $plugin_data = array_merge( (array) $plugin_info->response[ $plugin_file ], $plugin_data );
				}

			} elseif ( isset( $plugin_info->no_update[ $plugin_file ] ) ) {
				$plugins['all'][ $plugin_file ] = $plugin_data = array_merge( (array) $plugin_info->no_update[ $plugin_file ], $plugin_data );
				// Make sure that $plugins['upgrade'] also receives the extra info since it is used on ?plugin_status=upgrade
				if ( isset( $plugins['upgrade'][ $plugin_file ] ) ) {
					$plugins['upgrade'][ $plugin_file ] = $plugin_data = array_merge( (array) $plugin_info->no_update[ $plugin_file ], $plugin_data );
				}
			}

			// Filter into individual sections
			if ( is_multisite() && ! $screen->in_admin( 'network' ) && is_network_only_plugin( $plugin_file ) && ! is_plugin_active( $plugin_file ) ) {
				if ( $show_network_active ) {
					// On the non-network screen, show inactive network-only plugins if allowed
					$plugins['inactive'][ $plugin_file ] = $plugin_data;
				} else {
					// On the non-network screen, filter out network-only plugins as long as they're not individually active
					unset( $plugins['all'][ $plugin_file ] );
				}
			} elseif ( ! $screen->in_admin( 'network' ) && is_plugin_active_for_network( $plugin_file ) ) {
				if ( $show_network_active ) {
					// On the non-network screen, show network-active plugins if allowed
					$plugins['active'][ $plugin_file ] = $plugin_data;
				} else {
					// On the non-network screen, filter out network-active plugins
					unset( $plugins['all'][ $plugin_file ] );
				}
			} elseif ( ( ! $screen->in_admin( 'network' ) && is_plugin_active( $plugin_file ) )
				|| ( $screen->in_admin( 'network' ) && is_plugin_active_for_network( $plugin_file ) ) ) {
				// On the non-network screen, populate the active list with plugins that are individually activated
				// On the network-admin screen, populate the active list with plugins that are network activated
				$plugins['active'][ $plugin_file ] = $plugin_data;
			} else {
				if ( isset( $recently_activated[ $plugin_file ] ) ) {
					// Populate the recently activated list with plugins that have been recently activated
					$plugins['recently_activated'][ $plugin_file ] = $plugin_data;
				}
				// Populate the inactive list with plugins that aren't activated
				$plugins['inactive'][ $plugin_file ] = $plugin_data;
			}
		}

		if ( strlen( $s ) ) {
			$status = 'search';
			$plugins['search'] = array_filter( $plugins['all'], array( $this, '_search_callback' ) );
		}

		$totals = array();
		foreach ( $plugins as $type => $list )
			$totals[ $type ] = count( $list );

		if ( empty( $plugins[ $status ] ) && !in_array( $status, array( 'all', 'search' ) ) )
			$status = 'all';

		$this->items = array();
		foreach ( $plugins[ $status ] as $plugin_file => $plugin_data ) {
			// Translate, Don't Apply Markup, Sanitize HTML
			$this->items[$plugin_file] = _get_plugin_data_markup_translate( $plugin_file, $plugin_data, false, true );
		}

		$total_this_page = $totals[ $status ];

		$js_plugins = array();
		foreach ( $plugins as $key => $list ) {
			$js_plugins[ $key ] = array_keys( (array) $list );
		}

		wp_localize_script( 'updates', '_wpUpdatesItemCounts', array(
			'plugins' => $js_plugins,
			'totals'  => wp_get_update_data(),
		) );

		if ( ! $orderby ) {
			$orderby = 'Name';
		} else {
			$orderby = ucfirst( $orderby );
		}

		$order = strtoupper( $order );

		uasort( $this->items, array( $this, '_order_callback' ) );

		$plugins_per_page = $this->get_items_per_page( str_replace( '-', '_', $screen->id . '_per_page' ), 999 );

		$start = ( $page - 1 ) * $plugins_per_page;

		if ( $total_this_page > $plugins_per_page )
			$this->items = array_slice( $this->items, $start, $plugins_per_page );

		$this->set_pagination_args( array(
			'total_items' => $total_this_page,
			'per_page' => $plugins_per_page,
		) );
	}