WP_Theme_Install_List_Table::prepare_items()

	public function prepare_items() {
		include( ABSPATH . 'wp-admin/includes/theme-install.php' );

		global $tabs, $tab, $paged, $type, $theme_field_defaults;
		wp_reset_vars( array( 'tab' ) );

		$search_terms = array();
		$search_string = '';
		if ( ! empty( $_REQUEST['s'] ) ){
			$search_string = strtolower( wp_unslash( $_REQUEST['s'] ) );
			$search_terms = array_unique( array_filter( array_map( 'trim', explode( ',', $search_string ) ) ) );
		}

		if ( ! empty( $_REQUEST['features'] ) )
			$this->features = $_REQUEST['features'];

		$paged = $this->get_pagenum();

		$per_page = 36;

		// These are the tabs which are shown on the page,
		$tabs = array();
		$tabs['dashboard'] = __( 'Search' );
		if ( 'search' === $tab )
			$tabs['search']	= __( 'Search Results' );
		$tabs['upload'] = __( 'Upload' );
		$tabs['featured'] = _x( 'Featured', 'themes' );
		//$tabs['popular']  = _x( 'Popular', 'themes' );
		$tabs['new']      = _x( 'Latest', 'themes' );
		$tabs['updated']  = _x( 'Recently Updated', 'themes' );

		$nonmenu_tabs = array( 'theme-information' ); // Valid actions to perform which do not have a Menu item.

		/** This filter is documented in wp-admin/theme-install.php */
		$tabs = apply_filters( 'install_themes_tabs', $tabs );

		/**
		 * Filters tabs not associated with a menu item on the Install Themes screen.
		 *
		 * @since WP-2.8.0
		 *
		 * @param array $nonmenu_tabs The tabs that don't have a menu item on
		 *                            the Install Themes screen.
		 */
		$nonmenu_tabs = apply_filters( 'install_themes_nonmenu_tabs', $nonmenu_tabs );

		// If a non-valid menu tab has been selected, And it's not a non-menu action.
		if ( empty( $tab ) || ( ! isset( $tabs[ $tab ] ) && ! in_array( $tab, (array) $nonmenu_tabs ) ) )
			$tab = key( $tabs );

		$args = array( 'page' => $paged, 'per_page' => $per_page, 'fields' => $theme_field_defaults );

		switch ( $tab ) {
			case 'search':
				$type = isset( $_REQUEST['type'] ) ? wp_unslash( $_REQUEST['type'] ) : 'term';
				switch ( $type ) {
					case 'tag':
						$args['tag'] = array_map( 'sanitize_key', $search_terms );
						break;
					case 'term':
						$args['search'] = $search_string;
						break;
					case 'author':
						$args['author'] = $search_string;
						break;
				}

				if ( ! empty( $this->features ) ) {
					$args['tag'] = $this->features;
					$_REQUEST['s'] = implode( ',', $this->features );
					$_REQUEST['type'] = 'tag';
				}

				add_action( 'install_themes_table_header', 'install_theme_search_form', 10, 0 );
				break;

			case 'featured':
			// case 'popular':
			case 'new':
			case 'updated':
				$args['browse'] = $tab;
				break;

			default:
				$args = false;
				break;
		}

		/**
		 * Filters API request arguments for each Install Themes screen tab.
		 *
		 * The dynamic portion of the hook name, `$tab`, refers to the theme install
		 * tabs. Default tabs are 'dashboard', 'search', 'upload', 'featured',
		 * 'new', and 'updated'.
		 *
		 * @since WP-3.7.0
		 *
		 * @param array $args An array of themes API arguments.
		 */
		$args = apply_filters( "install_themes_table_api_args_{$tab}", $args );

		if ( ! $args )
			return;

		$api = themes_api( 'query_themes', $args );

		if ( is_wp_error( $api ) )
			wp_die( $api->get_error_message() . '</p> <p><a href="#" onclick="document.location.reload(); return false;">' . __( 'Try again' ) . '</a>' );

		$this->items = $api->themes;

		$this->set_pagination_args( array(
			'total_items' => $api->info['results'],
			'per_page' => $args['per_page'],
			'infinite_scroll' => true,
		) );
	}