searchautocomplete.php

<?php
/**
 * Plugin Name: Search Autocomplete
 * Plugin URI: http://hereswhatidid.com/search-autocomplete/
 * Description: Adds jQuery Autocomplete functionality to the default WordPress search box.
 * Version: 2.1.2
 * Author: Gabe Shackle
 * Author URI: http://hereswhatidid.com
 * License: GPLv2 or later
 */
class SearchAutocomplete {
	protected static $options_field = "sa_settings";
	protected static $options_field_ver = "sa_settings_ver";
	protected static $options_field_current_ver = "2.0";
	protected static $options_default = array(
		'autocomplete_search_id'          => '#s',
		'autocomplete_minimum'            => 3,
		'autocomplete_numrows'            => 10,
		'autocomplete_hotlinks'			  => array(),
		'autocomplete_hotlink_titles'     => 1,
		'autocomplete_hotlink_keywords'   => 1,
		'autocomplete_hotlink_categories' => 1,
		'autocomplete_posttypes'          => array(),
		'autocomplete_taxonomies'         => array(),
		'autocomplete_sortorder'          => 'posts',
		'autocomplete_exclusions'					=> '',
		'autocomplete_theme'              => '/redmond/jquery-ui-1.9.2.custom.min.css',
		'autocomplete_custom_theme'       => '',
	);
	protected static $options_init = array(
		'autocomplete_search_id'          => '#s',
		'autocomplete_minimum'            => 3,
		'autocomplete_numrows'            => 10,
		'autocomplete_hotlinks'			  => array( 'posts', 'taxonomies' ),
		'autocomplete_hotlink_titles'     => 1,
		'autocomplete_hotlink_keywords'   => 1,
		'autocomplete_hotlink_categories' => 1,
		'autocomplete_posttypes'          => array(),
		'autocomplete_taxonomies'         => array(),
		'autocomplete_sortorder'          => 'posts',
		'autocomplete_exclusions'					=> '',
		'autocomplete_theme'              => '/redmond/jquery-ui-1.9.2.custom.min.css',
		'autocomplete_custom_theme'       => '',
	);

	var $pluginUrl,
			$defaults,
			$options;

	public function __construct() {
		$this->initVariables();
		add_action( 'wp_enqueue_scripts', array( $this, 'initScripts' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'initAdminScripts' ) );
		$this->initAjax();
		// init admin settings page
		add_action( 'admin_menu', array( $this, 'adminSettingsMenu' ) );
		add_action( 'admin_init', array( $this, 'adminSettingsInit' ) ); // Add admin init functions
	}

	public function initVariables() {
		$this->pluginUrl = plugin_dir_url( __FILE__ );
		$options         = get_option( self::$options_field );

		$this->options = ( $options !== false ) ? wp_parse_args( $options, self::$options_default ) : self::$options_default;
	}

	public function initScripts() {
		$localVars = array(
			'ajaxurl'   => admin_url( 'admin-ajax.php' ),
			'fieldName' => $this->options['autocomplete_search_id'],
			'minLength' => $this->options['autocomplete_minimum']
		);
		if ( $this->options['autocomplete_theme'] !== '--None--' ) {
			wp_enqueue_style( 'SearchAutocomplete-theme', plugins_url( 'css' . $this->options['autocomplete_theme'], __FILE__ ), array(), '1.9.2' );
		}
		if ( wp_script_is( 'jquery-ui-autocomplete', 'registered' ) ) {
			wp_enqueue_script( 'SearchAutocomplete', plugins_url( 'js/search-autocomplete.js', __FILE__ ), array( 'jquery-ui-autocomplete' ), '1.0.0', true );
		}
		else {
			wp_register_script( 'jquery-ui-autocomplete', plugins_url( 'js/jquery-ui-1.9.2.custom.min.js', __FILE__ ), array( 'jquery-ui' ), '1.9.2', true );
			wp_enqueue_script( 'SearchAutocomplete', plugins_url( 'js/search-autocomplete.js', __FILE__ ), array( 'jquery-ui-autocomplete' ), '1.0.0', true );
		}
		wp_localize_script( 'SearchAutocomplete', 'SearchAutocomplete', $localVars );
	}

	public function initAdminScripts() {
		$localAdminVars = array(
			'defaults' => self::$options_default
		);
		wp_enqueue_script( 'SearchAutocompleteAdmin', plugins_url( 'js/admin-scripts.js', __FILE__ ), array( 'jquery-ui-sortable' ), '1.0.0', true );
		wp_localize_script( 'SearchAutocompleteAdmin', 'SearchAutocompleteAdmin', $localAdminVars );
	}

	public function initAjax() {
		add_action( 'wp_ajax_autocompleteCallback', array( $this, 'acCallback' ) );
		add_action( 'wp_ajax_nopriv_autocompleteCallback', array( $this, 'acCallback' ) );
	}

	public function acCallback() {
		global $wpdb;
		$resultsPosts = array();
		$resultsTerms = array();
		$term         = sanitize_text_field( $_GET['term'] );
		if ( count( $this->options['autocomplete_posttypes'] ) > 0 ) {
			$tempPosts = get_posts( array(
				's'           => $term,
				'numberposts' => $this->options['autocomplete_numrows'],
				'post_type'   => $this->options['autocomplete_posttypes'],
			) );
			foreach ( $tempPosts as $post ) {
				$tempObject = array(
					'id' => $post->ID,
					'type' => 'post',
					'taxonomy' => null,
					'postType' => $post->post_type
				);
				$linkTitle = apply_filters( 'the_title', $post->post_title );
				$linkTitle = apply_filters( 'search_autocomplete_modify_title', $linkTitle, $tempObject );
				if ( ! in_array( 'posts', $this->options['autocomplete_hotlinks'] ) ) {
					$linkURL = '#';
				} else {
					$linkURL = get_permalink( $post->ID );
					$linkURL = apply_filters( 'search_autocomplete_modify_url', $linkURL, $tempObject );
				}
				$resultsPosts[] = array(
					'title' => $linkTitle,
					'url'   => $linkURL,
				);
			}
		}
		if ( count( $this->options['autocomplete_taxonomies'] ) > 0 ) {
			$taxonomyTypes = "AND ( tax.taxonomy = '" . implode( "' OR tax.taxonomy = '", $this->options['autocomplete_taxonomies'] ) . "') ";
			$queryStringTaxonomies = 'SELECT term.term_id as id, term.name as post_title, term.slug as guid, tax.taxonomy, 0 AS content_frequency, 0 AS title_frequency FROM ' . $wpdb->term_taxonomy . ' tax ' .
					'LEFT JOIN ' . $wpdb->terms . ' term ON term.term_id = tax.term_id WHERE 1 = 1 ' .
					'AND term.name_normal LIKE "' . $term . '%" ' .
					$taxonomyTypes .
					'ORDER BY tax.count DESC ' .
					'LIMIT 0, ' . $this->options['autocomplete_numrows'];
			$tempTerms             = $wpdb->get_results( $queryStringTaxonomies );
			foreach ( $tempTerms as $term ) {
				$tempObject = array(
					'id' => $term->id,
					'type' => 'taxonomy',
					'taxonomy' => $term->taxonomy,
					'postType' => null
				);
				$linkTitle = apply_filters( 'the_title', $term->post_title );
				$linkTitle = apply_filters( 'search_autocomplete_modify_title', $linkTitle, $tempObject );
				if ( ! in_array( 'taxonomies', $this->options['autocomplete_hotlinks'] ) ) {
					$linkURL = '#';
				} else {
					$linkURL = get_term_link( $term->guid, $term->taxonomy );
					$linkURL = apply_filters( 'search_autocomplete_modify_url', $linkURL, $tempObject );
				}
				$resultsTerms[] = array(
					'title' => $linkTitle,
					'url'   => $linkURL,
				);
			}
		}
		if ( $this->options['autocomplete_sortorder'] == 'posts' ) {
			$results = array_merge( $resultsPosts, $resultsTerms );
		}
		else {
			$results = array_merge( $resultsTerms, $resultsPosts );
		}
		$results = apply_filters( 'search_autocomplete_modify_results', $results );
		echo json_encode( array( 'results' => array_slice( $results, 0, $this->options['autocomplete_numrows'] ) ) );
		die();
	}

	/*
	 * Admin Settings
	 *
	 */
	public function adminSettingsMenu() {
		$page = add_options_page( 'Search Autocomplete', 'Search Autocomplete', 'manage_options', 'search-autocomplete', array( $this, 'settingsPage' ) );
	}

	public function settingsPage() {
		?>
		<div class="wrap searchautocomplete-settings">
			<?php screen_icon(); ?>
			<h2><?php _e( "Search Autocomplete", "search-autocomplete" ); ?></h2>

			<form action="options.php" method="post">
				<?php wp_nonce_field(); ?>
				<?php
				settings_fields( "sa_settings" );
				do_settings_sections( "search-autocomplete" );
				?>
				<input class="button-primary" name="Submit" type="submit" value="<?php _e( "Save settings", "search-autocomplete" ); ?>">
				<input class="button revert" name="revert" type="button" value="<?php _e( "Revert to Defaults", "search-autocomplete" ); ?>">
			</form>
		</div>
	<?php
	}

	/**
	 *
	 */
	public function adminSettingsInit() {
		register_setting(
			self::$options_field,
			self::$options_field,
			array( $this, "sa_settings_validate" )
		);
		add_settings_section(
			'sa_settings_main',
			__( 'Settings', 'search-autocomplete' ),
			array( $this, 'sa_settings_main_text' ),
			'search-autocomplete'
		);
		add_settings_field(
			'autocomplete_search_id',
			__( 'Search Field Selector', 'search-autocomplete' ),
			array( $this, 'sa_settings_field_selector' ),
			'search-autocomplete',
			'sa_settings_main'
		);
		add_settings_field(
			'autocomplete_minimum',
			__( 'Autocomplete Trigger', 'search-autocomplete' ),
			array( $this, 'sa_settings_field_minimum' ),
			'search-autocomplete',
			'sa_settings_main'
		);
		add_settings_field(
			'autocomplete_numrows',
			__( 'Number of Results', 'search-autocomplete' ),
			array( $this, 'sa_settings_field_numrows' ),
			'search-autocomplete',
			'sa_settings_main'
		);
		add_settings_field(
			'autocomplete_hotlinks',
			__( 'Hotlink Items', 'search-autocomplete' ),
			array( $this, 'sa_settings_field_hotlinks' ),
			'search-autocomplete',
			'sa_settings_main'
		);
		add_settings_field(
			'autocomplete_posttypes',
			__( 'Post Types', 'search-autocomplete' ),
			array( $this, 'sa_settings_field_posttypes' ),
			'search-autocomplete',
			'sa_settings_main'
		);
		add_settings_field(
			'autocomplete_taxonomies',
			__( 'Taxonomies', 'search-autocomplete' ),
			array( $this, 'sa_settings_field_taxonomies' ),
			'search-autocomplete',
			'sa_settings_main'
		);
//		add_settings_field(
//			'autocomplete_exclusions',
//			__( 'Excluded ', 'search-autocomplete' ),
//			array( $this, 'sa_settings_field_exclusions' ),
//			'search-autocomplete',
//			'sa_settings_main'
//		);
		add_settings_field(
			'autocomplete_sortorder',
			__( 'Order of Types', 'search-autocomplete' ),
			array( $this, 'sa_settings_field_sortorder' ),
			'search-autocomplete',
			'sa_settings_main'
		);
		add_settings_field(
			'autocomplete_theme',
			__( 'Theme Stylesheet', 'search-autocomplete' ),
			array( $this, 'sa_settings_field_themes' ),
			'search-autocomplete',
			'sa_settings_main'
		);
	}

	public function sa_settings_main_text() {
	}

	public function sa_settings_field_selector() {
		?>
		<input id="autocomplete_search_id" class="regular-text" name="<?php echo self::$options_field; ?>[autocomplete_search_id]" value="<?php echo htmlspecialchars( $this->options['autocomplete_search_id'] ); ?>">
		<p class="description">
			<?php _e( "Any valid CSS selector will work.", "search-autocomplete" ); ?><br>
			<?php _e( "The default search box for TwentyTwelve, TwentyEleven, and TwentyTen is '#s'.", "search-autocomplete" ); ?><br>
			<?php _e( "The default search box for TwentyThirteen is '[name=\"#s\"]'.", "search-autocomplete" ); ?>
		</p>
	<?php
	}

	public function sa_settings_field_minimum() {
		?>
		<input id="autocomplete_minimum" class="regular-text" name="<?php echo self::$options_field; ?>[autocomplete_minimum]" value="<?php echo $this->options['autocomplete_minimum']; ?>">
		<p class="description"><?php _e( "The minimum number of characters before the autocomplete triggers.", "search-autocomplete" ); ?>
		<br>
	<?php
	}

	public function sa_settings_field_numrows() {
		?>
		<input id="autocomplete_numrows" class="regular-text" name="<?php echo self::$options_field; ?>[autocomplete_numrows]" value="<?php echo $this->options['autocomplete_numrows']; ?>">
		<p class="description"><?php _e( "The total number of results returned.", "search-autocomplete" ); ?><br>
	<?php
	}

	public function sa_settings_field_hotlinks() {
		?>
		<p><label>
				<input name="<?php echo self::$options_field; ?>[autocomplete_hotlinks][]" type="checkbox" id="autocomplete_hotlink_posts" value="posts" <?php checked( in_array( 'posts', $this->options['autocomplete_hotlinks'] ) ); ?>>
				<?php _e( 'Link to post or page.', 'seach-autocomplete' ); ?></label><br>
			<label>
				<input name="<?php echo self::$options_field; ?>[autocomplete_hotlinks][]" type="checkbox" id="autocomplete_hotlink_taxonomies" value="taxonomies" <?php checked( in_array( 'taxonomies', $this->options['autocomplete_hotlinks'] ) ); ?>>
				<?php _e( 'Link to taxonomy (categories, keywords, custom taxonomies, etc...) page.', 'search-autocomplete' ); ?>
			</label></p>
		<p class="description"><?php _e( 'Adjusts the click action on drop down items.', 'search-autocomplete' ); ?></p>
	<?php
	}

	public function sa_settings_field_taxonomies() {
		$selectedTaxonomies = $this->options['autocomplete_taxonomies'];
		$args               = array(
			'public' => true,
		);
		$output             = 'objects';
		$taxonomies         = get_taxonomies( $args, $output );
		?><p><?php
		foreach ( $taxonomies as $taxonomy ) {
			?>
			<label>
				<input name="<?= self::$options_field; ?>[autocomplete_taxonomies][]" class="autocomplete_taxonomies" id="autocomplete_taxonomies-<?= $taxonomy->name ?>" type="checkbox" value="<?= $taxonomy->name ?>" <?php checked( in_array( $taxonomy->name, $selectedTaxonomies ), true ); ?>>
				<?= $taxonomy->labels->name ?></label><br>
		<?php
		}
		?></p>
		<p class="description"><?php _e( 'Check the taxonomies to include in the autocomplete drop down.', 'search-autocomplete' ); ?></p>
	<?php
	}

	public function sa_settings_field_posttypes() {
		$selectedTypes = $this->options['autocomplete_posttypes'];
		$args          = array(
			'public' => true,
		);
		$output        = 'objects';
		$postTypes     = get_post_types( $args, $output );
		?><p><?php
		foreach ( $postTypes as $postType ) {
			?>
			<label>
				<input name="<?php echo self::$options_field; ?>[autocomplete_posttypes][]" class="autocomplete_posttypes" id="autocomplete_posttypes-<?php echo $postType->name ?>" type="checkbox" value="<?php echo $postType->name ?>" <?php checked( in_array( $postType->name, $selectedTypes ), true ); ?>>
				<?php echo $postType->labels->name ?></label><br>
		<?php
		}
		?></p>
		<p class="description"><?php _e( 'Check the post types to include in the autocomplete drop down.', 'search-autocomplete' ); ?></p>
	<?php
	}

	public function sa_settings_field_themes() {
		$globFilter = dirname( __FILE__ ) . DIRECTORY_SEPARATOR . 'css' . DIRECTORY_SEPARATOR . '*' . DIRECTORY_SEPARATOR . '*.css';
		$themeOptions = glob( $globFilter, GLOB_ERR );
		array_unshift( $themeOptions, __( '--None--', 'search-autocomplete') );
        
		?>
		<select name="<?php echo self::$options_field; ?>[autocomplete_theme]" id="autocomplete_theme">
			<?php
			foreach ( $themeOptions as $stylesheet ) {
				$newSheet = str_replace( dirname( __FILE__ ) . DIRECTORY_SEPARATOR . 'css', '', $stylesheet );
//				$newSheet = str_replace( '\\', '/', $newSheet );
				printf( '<option value="%s"%s>%s</option>', $newSheet, ( $newSheet == $this->options['autocomplete_theme'] ) ? ' selected="selected"' : '', $newSheet );
			}
			?>
		</select>
		<p class="description"><?php _e( 'These themes use the jQuery UI standard theme set up.  You can create and download additional themes here: <a href="http://jqueryui.com/themeroller/" target="_blank">http://jqueryui.com/themeroller/</a>', 'search-autocomplete' ); ?>.</p>
		<p class="description"><?php _e( 'To add a new theme to this plugin you must upload the "/css/" directory in the generated theme to the this plugin\'s "/css/" directory.  For example, "/wp-content/plugin/search-autocomplete/css/" would be a default install location', 'search-autocomplete' ); ?>.</p>
		<p class="description"><?php _e( 'The minified (compressed) version of the CSS for ThemeRoller themes typically contain ".min" within their file name.', 'search-autocomplete' ); ?></p>
		<p class="description"><?php _e( 'If you would like to use your own styles outside of the plugin, select "--None--" and no stylesheet will be loaded by the plugin.', 'search-autocomplete' ); ?></p>
	<?php
	}

	public function sa_settings_field_sortorder() {
		?>
		<select name="<?php echo self::$options_field; ?>[autocomplete_sortorder]" id="autocomplete_sortorder">
			<option value="posts" <?php selected( $this->options['autocomplete_sortorder'], 'posts' ); ?>><?php _e( 'Posts First', 'search-autocomplete' ); ?></option>
			<option value="terms" <?php selected( $this->options['autocomplete_sortorder'], 'terms' ); ?>><?php _e( 'Taxonomies First', 'search-autocomplete' ); ?></option>
		</select>
		<p class="description"><?php _e( 'When using multiple types (posts or taxonomies) this controls what order they are sorted in within the autocomplete drop down.', 'search-autocomplete' ); ?></p>
	<?php
	}

	public function sa_settings_validate( $input ) {
		$valid = wp_parse_args( $input, self::$options_default );
		return $valid;
	}

	public function activate( $network_wide ) {
		if ( get_option( 'sa_settings' ) === false ) {
			update_option( 'sa_settings', self::$options_init );
		} else {
			$options = get_option( 'sa_settings' );
			if ( ! isset( $options['autocomplete_hotlinks'] ) ) {
				$options['autocomplete_hotlinks'] = array( 'posts', 'taxonomies' );
				update_option( 'sa_settings', $options );
			}
		}
	}
}
register_activation_hook( __FILE__, array( 'SearchAutocomplete', 'activate' ) );

$SearchAutocomplete = new SearchAutocomplete();