bobiasg

Hi msaari,

For ajax indexing, you can do like this (I modify base on Search-unleashed):

1. Add action :

add_action( 'wp_ajax_relevanssi_index', 'relevanssi_build_index_ajax' );
add_action( 'wp_print_scripts','relevanssi_print_scripts' );
add_action( 'admin_head','relevanssi_admin_head' );

2. build function relevanssi_build_index_ajax, relevanssi_print_scripts, relevanssi_admin_head.
My code

function relevanssi_build_index_ajax() {
	global $wpdb, $relevanssi_table;
	$extend = false;

	$ajax_index = check_ajax_referer( 'relevanssi-index', false, false );
	$ajax_continue_index = check_ajax_referer( 'relevanssi-continue-index', false, false );

	if ($ajax_continue_index)
		$extend = true;

	if ( current_user_can( 'administrator' ) && ($ajax_index || $ajax_continue_index) ) {
		ob_start();

		$offset = intval( $_POST['offset'] );
		$count = intval( $_POST['limit'] );

		$type = get_option("relevanssi_index_type");
		switch ($type) {
			case "posts":
				$restriction = " AND post_type = 'post'";
				break;
			case "pages":
				$restriction = " AND post_type = 'page'";
				break;
			case "both":
			default:
				$restriction = "";
		}		

		$remaining = 0;
		$exists = $wpdb->get_var( "SELECT COUNT(DISTINCT(doc)) FROM $relevanssi_table");
		$total = $wpdb->get_var( "SELECT COUNT(DISTINCT {$wpdb->posts}.ID) FROM {$wpdb->posts} WHERE post_status='publish'" . $restriction );		

		$n = 0;

		if ( $total > 0 && $offset < $total) {
			// More posts to index
			$relative = 0;// $offset;

			if (!$extend) {
				// truncate table first
				$wpdb->query("TRUNCATE TABLE $relevanssi_table");
				$q = "SELECT ID, post_content, post_title
				FROM $wpdb->posts WHERE post_status='publish'" . $restriction . "  LIMIT $relative,$count ";
				update_option('relevanssi_index', '');

				$exists = 0;
			}
			else {
				// extending, so no truncate and skip the posts already in the index
				$q = "SELECT ID, post_content, post_title
				FROM $wpdb->posts WHERE post_status='publish' AND
				ID NOT IN (SELECT (doc) FROM $relevanssi_table)" . $restriction  . "  LIMIT $relative,$count ";
			}

			$custom_fields = relevanssi_get_custom_fields();

			$content = $wpdb->get_results($q);
			foreach ($content as $post) {
				$n += relevanssi_index_doc($post, false, $custom_fields);
				// n calculates the number of insert queries
			}

			$remaining = $total - count( $content) - $offset - $exists;
		}

		ob_end_clean();

		$percent = 100;
		if ($total > 0)
			$percent = ( ( $total - $remaining ) / $total ) * 100;

		if ( $remaining > 0 )
			echo sprintf('%d %d%% ', $remaining, $percent).sprintf( __( '%d of %d / %d%%', 'relevanssi'), $total - $remaining, $total, $percent );
		else {
			echo '0 100% '.__('Finished!', 'relevanssi');
		}	

		if ($remaining == 0)
			update_option('relevanssi_indexed', 'done');

		die();
	}
}
function relevanssi_print_scripts() {
	if ( isset($_GET['page']) && $_GET['page'] == 'relevanssi/'.basename( __FILE__ ) ) {
		wp_enqueue_script( 'relevanssi', plugins_url('/js/admin.js',__FILE__), array( 'jquery-form' ), '1.7.2' );
	}
}
function relevanssi_admin_head() {
		if ( isset($_GET['page']) && $_GET['page'] == 'relevanssi/'. basename( __FILE__ ) )
			echo '<link rel="stylesheet" href="'. plugins_url('admin.css',__FILE__) .'" type="text/css" media="screen" title="no title" charset="utf-8"/>';
	}

3. Add javascript in function relevanssi_options_form:

<div id="wrapper" style="display: none"></div>
<script type="text/javascript" charset="utf-8">

		jQuery(function() {
			jQuery('#wrapper').Progressor( {
				start:    jQuery('input[name=continueindex]'),
				cancel:   '<?php _e( 'Cancel', 'relevanssi' ); ?>',
				url:      '<?php echo admin_url('admin-ajax.php') ?>',
				nonce:    '<?php echo wp_create_nonce ('relevanssi-continue-index')?>',
				finished: '<?php _e( 'Finished!', 'relevanssi'); ?>'
			});
		});
	</script>

admin.js

(function($){
 $.fn.Progressor = function(args){
	args = args || {};

	return this.each(function() {
		// Store value in a cookie
		function timer() {
		  if (running) {
  		  $.ajax({
  		    url: opts.url,
  		    cache: false,
  		    data: ({ action: 'relevanssi_index', offset: offset, limit: opts.limit, _ajax_nonce: opts.nonce }),
  		    type: 'POST',
  		    error: function() {
					alert('There is an error');
				  },
  		    success: function(data) {
  		      var parts   = data.split(' ');
  		      var left    = parseInt(parts.shift());
  		      var percent = parts.shift();
  		      var message = parts.join(' ')

		        $(wrapper).find('p').html(message);
		        $('#' + opts.inside).css('width', percent);

  		      if (left > 0) {
  		        // More to come
  		        offset += opts.limit;
          		setTimeout(timer, 0);
  		      }
  		      else {
  		        // Finished
		          $(opts.start).val(original);
        		  $(opts.loading).hide();
  		        running = false;
  		      }
  		    }
  		  });
  		}
		}

    // Load values from args and merge with defaults
    var opts = $.extend({
      cancel: 'Cancel',
      inside: 'inner',
      limit: 20,
      nonce: '',
      loading: '#loading'
    }, args);

		var offset  = 0;
		var running = false;
		var wrapper = this;
		var original = $(opts.start).val();

		$(opts.start).click(function() {
		  var button = this;

		  if (running) {
		    // Cancel
		    running = false;
		    $(button).val(original);
  		  $(opts.loading).hide();
		  }
		  else {
		    offset = 0;
  		  running = true;

  		  // Hide the button
  		  $(button).val(opts.cancel);
  		  $(opts.loading).show();

  		  // Setup the progress bar
  		  $(wrapper).empty();
  		  $(wrapper).append('<div id="' + opts.inside + '"></div><p></p>');
  		  $(wrapper).fadeIn();
        $('#' + opts.inside).css('width', '0px');

    		// Now kick-start a timer to perform the progressor
    		setTimeout(timer, 0);
    	}

  		return false;
		});
	  });
  };
})(jQuery);

function highlight (index,item)
{
  jQuery('#color_' + index).css ('backgroundColor', '#' + item.value);
}

admin.css

#wrapper, #wrapper2
{
border: 1px solid #666;
height: 2em;
position: relative;
width: 70%;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
margin: 0 auto;
}

#wrapper p, #wrapper2 p
{
margin: 0;
padding: 0;
padding-top: 0.3em;
position: absolute;
left: 0;
top: 0;
width: 100%;
text-align: center;
font-weight: bold;
}

#inner
{
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
width: 10px;
height: 2em;
background-color: #ccc;
}

#status
{
position: absolute;
top: 0;
left: 0;
text-align: center;
color: #444;
width: 100%;
}