Row actions and utility functions

Adds row actions for supported post types, and introduces various utility methods and functions to simplify plugin and reduce repetition.

eth-simple-shortlinks.php

@@ -4,7 +4,7 @@ Plugin Name: ETH Simple Shortlinks
 Plugin URI: https://ethitter.com/plugins/
 Description: Simple non-GET shortlinks using post IDs
 Author: Erick Hitter
-Version: 0.2
+Version: 0.3
 Author URI: https://ethitter.com/
 
 This program is free software; you can redistribute it and/or modify
@@ -56,17 +56,24 @@ class ETH_Simple_Shortlinks {
 	private $slug = 'p';
 	private $qv   = 'eth-shortlink';
 
+	private $supported_post_types    = array();
+	private $supported_post_statuses = array();
+
 	/**
-	 *
+	 * Register actions and filters
 	 */
 	private function __construct() {
 		// Request
 		add_action( 'init', array( $this, 'add_rewrite_rule' ) );
+		add_action( 'wp_loaded', array( $this, 'filter_support' ) );
 		add_filter( 'query_vars', array( $this, 'filter_query_vars' ) );
 		add_action( 'parse_request', array( $this, 'action_parse_request' ) );
 
 		// Shortlink
 		add_filter( 'get_shortlink', array( $this, 'filter_get_shortlink' ), 10, 2 );
+		add_action( 'admin_head-edit.php', array( $this, 'add_admin_header_assets' ) );
+		add_filter( 'post_row_actions', array( $this, 'filter_row_actions' ), 10, 2 );
+		add_filter( 'page_row_actions', array( $this, 'filter_row_actions' ), 10, 2 );
 	}
 
 	/**
@@ -77,6 +84,14 @@ class ETH_Simple_Shortlinks {
 	}
 
 	/**
+	 * Allow filtering of supported statuses and types
+	 */
+	public function filter_support() {
+		$this->supported_post_statuses = apply_filters( 'eth_simple_shortlinks_allowed_post_statuses', array( 'publish', 'future' ) );
+		$this->supported_post_types    = apply_filters( 'eth_simple_shortlinks_allowed_post_types',    array( 'post', 'page' ) );
+	}
+
+	/**
 	 * Add custom query var to those permitted, so it can be detected at `parse_request`
 	 */
 	public function filter_query_vars( $qv ) {
@@ -119,16 +134,71 @@ class ETH_Simple_Shortlinks {
 			return $shortlink;
 		}
 
-		if ( ! in_array( get_post_status( $id ), apply_filters( 'eth_simple_shortlinks_allowed_post_statuses', array( 'publish', 'future' ) ) ) ) {
+		if ( ! in_array( get_post_status( $id ), $this->supported_post_statuses ) ) {
 			return $shortlink;
 		}
 
-		if ( ! in_array( get_post_type( $id ), apply_filters( 'eth_simple_shortlinks_allowed_post_types', array( 'post', 'page' ) ) ) ) {
+		if ( ! in_array( get_post_type( $id ), $this->supported_post_types ) ) {
 			return $shortlink;
 		}
 
-		return user_trailingslashit( home_url( sprintf( '%s/%d', $this->slug, $id ) ) );
+		return $this->get_shortlink( $id );
+	}
+
+	/**
+	 * Header assets for shortlink in row actions
+	 */
+	public function add_admin_header_assets() {
+		global $typenow;
+		if ( ! in_array( $typenow, $this->supported_post_types ) ) {
+			return;
+		}
+
+		?>
+		<script type="text/javascript">
+
+			jQuery( document ) .ready( function( $ ) {
+				$( '.row-actions .shortlink a' ).click( function( e ) {
+					e.preventDefault();
+
+					prompt( 'URL:', $( this ).attr('href') );
+				} );
+			} );
+		</script>
+		<?php
+	}
+
+	/**
+	 * Provide the shortlink in row actions for easy access
+	 */
+	public function filter_row_actions( $actions, $post ) {
+		if ( ! in_array( get_post_type( $post ), $this->supported_post_types ) ) {
+			return $actions;
+		}
+
+		$actions['shortlink'] = '<a href="' . esc_js( $this->get_shortlink( $post->ID ) ) . '">Shortlink</a>';
+
+		return $actions;
+	}
+
+	/**
+	 * Utility method for building permlink
+	 */
+	public function get_shortlink( $post_id ) {
+		return user_trailingslashit( home_url( sprintf( '%s/%d', $this->slug, $post_id ) ) );
 	}
 }
 
 ETH_Simple_Shortlinks::get_instance();
+
+/**
+ * Shortcut for using the shortlink outside of this plugin's considerations
+ */
+function eth_simple_shortlinks_get( $post_id ) {
+	if ( ! did_action( 'wp_loaded' ) ) {
+		_doing_it_wrong( __FUNCTION__, 'Shortlinks cannot be generated until after <code>wp_loaded</code>; this ensures that all post types are registered.', '0.3' );
+		return false;
+	}
+
+	return ETH_Simple_Shortlinks::get_instance()->get_shortlink( $post_id );
+}