added document parent, cleaned up readme

document-post-parent/document-post-parent.php

@@ -0,0 +1,120 @@
+<?php
+/*
+Plugin Name: Document Parent UI
+Description: Creates UI for selecting document parent
+Author: Benjamin Balter
+Version: 1.0
+Author URI: http://ben.balter.com/
+*/
+
+class Document_Post_Parent {
+
+	private $post_type = 'document'; 
+	private $parent_post_type = 'post'; //post_type to query for
+
+	/**
+	 * Register hooks with WP
+	 */
+	function __construct() {
+
+		add_action( 'add_meta_boxes', array( &$this, 'add_metabox' ) );
+		add_action( 'admin_init', array( &$this, 'enqueue_autocomplete' ) );
+		add_action( 'wp_ajax_document_parent_lookup', array( &$this, 'lookup' ) );
+		add_action( 'wp_insert_post_parent', array( &$this, 'save_parent' ) );
+
+	}
+
+	/**
+	 * Add metabox to document pages
+	 */
+	function add_metabox() {
+
+	add_meta_box( 'document-parent', 'Post Parent', array( &$this, 'metabox' ), $this->post_type, 'normal', 'low' );
+
+	}
+
+	/**
+	 * Metabox callback
+	 */
+	function metabox( $post ) { 
+		wp_nonce_field( 'document_parent', '_parent_nonce' );
+		$post_parent = get_post( $post->post_parent );
+	?>
+	<p><input type="text" class="widefat" name="post_parent" id="post_parent" value="<?php echo ( $post_parent ) ? $post_parent->post_title : 0; ?>" />
+	<input type="hidden" id="post_parent_id" name="post_parent_id" value="<?php echo $post->post_parent; ?>" />
+	</p>
+	<script>jQuery(document).ready(function($) {
+		$('#post_parent').autocomplete( ajaxurl + '?action=document_parent_lookup&_wpnonce=<?php echo wp_create_nonce('document_parent_lookup'); ?>',{autoFill: true,});
+		$('#post_parent').result(function(event,data,formatted) {
+			if (data) $('#post_parent_id').val(data[1]);
+		});
+	});</script>
+	<?php }
+
+	/**
+	 * Loads autocomplete jquery plugin on document edit page
+	 */
+	function enqueue_autocomplete() {
+		global $pagenow;		
+
+		//verify either new or existing document
+		if ( $pagenow != 'post-new.php' && $pagenow != 'post.php' )
+			return;
+
+		if ( $pagenow == 'post-new.php' && ( !isset( $_GET['post_type'] ) || $_GET['post_type'] != 'document' ) )
+			return;
+
+		if ( $pagenow == 'post.php' && get_post( $_GET['post'] )->post_type != $this->post_type )
+			return;
+
+		//js
+		$suffix = ( WP_DEBUG ) ? '.min' : '';
+		wp_enqueue_script( 'jquery.autocomplete', plugins_url( '/js/jquery.autocomplete' . $suffix . '.js', __FILE__ ), array( 'jquery' ), null, true );
+
+		//css
+		wp_enqueue_style( 'jquery.autocomplete', plugins_url( '/js/jquery.autocomplete.css', __FILE__ ) );
+
+	}
+
+	/**
+	 * Callback to lookup products for autocomplete
+	 */
+	function lookup() {
+		global $wpdb;
+
+		if ( !isset( $_GET['q'] ) )
+			die( -1 );
+
+		check_admin_referer( 'document_parent_lookup' );
+
+		$posts = $wpdb->get_results( $wpdb->prepare( "Select ID, post_title FROM $wpdb->posts WHERE post_type = '{$this->parent_post_type}' AND post_status = 'publish' AND post_title LIKE '%%%s%%' ORDER BY post_title ASC", $_GET['q'] ) );
+
+		foreach ( $posts as $post ) {
+			echo $post->post_title . '|' . $post->ID . "\n";
+		}
+
+		exit();
+	}
+
+	/**
+	 * Filter to save post_parent when document is updated
+	 */
+	function save_parent( $parent, $postID = null , $keys = null, $post = null) {
+
+		//filter fires on new and non-document posts, if so kick
+		if ( !isset( $_POST['post_parent_id'] ) )
+			return $parent;	
+
+		//nonce check also verifies this is a document
+		check_admin_referer( 'document_parent', '_parent_nonce' );
+
+		if ( !current_user_can( 'edit_post', $postID ) )
+			return;
+
+		return (int) $_POST['post_parent_id'];
+
+	}
+
+}
+
+new Document_Post_Parent();

document-post-parent/js/jquery.autocomplete.css

@@ -0,0 +1,48 @@
+.ac_results {
+	padding: 0px;
+	border: 1px solid black;
+	background-color: white;
+	overflow: hidden;
+	z-index: 99999;
+}
+
+.ac_results ul {
+	width: 100%;
+	list-style-position: outside;
+	list-style: none;
+	padding: 0;
+	margin: 0;
+}
+
+.ac_results li {
+	margin: 0px;
+	padding: 2px 5px;
+	cursor: default;
+	display: block;
+	/* 
+	if width will be 100% horizontal scrollbar will apear 
+	when scroll mode will be used
+	*/
+	/*width: 100%;*/
+	font: menu;
+	font-size: 12px;
+	/* 
+	it is very important, if line-height not setted or setted 
+	in relative units scroll will be broken in firefox
+	*/
+	line-height: 16px;
+	overflow: hidden;
+}
+
+.ac_loading {
+	background: white url('indicator.gif') right center no-repeat;
+}
+
+.ac_odd {
+	background-color: #eee;
+}
+
+.ac_over {
+	background-color: #0A246A;
+	color: white;
+}