<?php

/*
  Plugin Name: WP-PageNavi
  Plugin URI: http://lesterchan.net/portfolio/programming/php/
  Description: Adds a more advanced paging navigation to your WordPress blog.
  Version: 2.50
  Author: Lester 'GaMerZ' Chan
  Author URI: http://lesterchan.net
 */


/*
  Copyright 2009  Lester Chan  (email : lesterchan@gmail.com)

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

// Create Text Domain For Translations
function pagenavi_textdomain() {
	load_plugin_textdomain('wp-pagenavi', false, 'wp-pagenavi');
}

// Page Navigation: Boxed Style Paging
function wp_pagenavi($before = '', $after = '') {
	global $wpdb, $wp_query;
	pagenavi_init(); //Calling the pagenavi_init() function

	if (!is_single()) {
		$request          = $wp_query->request;
		$posts_per_page   = intval(get_query_var('posts_per_page'));
		$paged            = intval(get_query_var('paged'));
		$pagenavi_options = get_option('pagenavi_options');
		$numposts         = $wp_query->found_posts;
		$max_page         = $wp_query->max_num_pages;
		if (empty($paged) || $paged == 0) {
			$paged = 1;
		}
		$pages_to_show         = intval($pagenavi_options['num_pages']);
		$larger_page_to_show   = intval($pagenavi_options['num_larger_page_numbers']);
		$larger_page_multiple  = intval($pagenavi_options['larger_page_numbers_multiple']);
		$pages_to_show_minus_1 = $pages_to_show - 1;
		$half_page_start       = floor($pages_to_show_minus_1 / 2);
		$half_page_end         = ceil($pages_to_show_minus_1 / 2);
		$start_page            = $paged - $half_page_start;
		if ($start_page <= 0) {
			$start_page = 1;
		}
		$end_page = $paged + $half_page_end;
		if (($end_page - $start_page) != $pages_to_show_minus_1) {
			$end_page = $start_page + $pages_to_show_minus_1;
		}
		if ($end_page > $max_page) {
			$start_page = $max_page - $pages_to_show_minus_1;
			$end_page   = $max_page;
		}
		if ($start_page <= 0) {
			$start_page = 1;
		}
		$larger_per_page         = $larger_page_to_show * $larger_page_multiple;
		$larger_start_page_start = (n_round($start_page, 10) + $larger_page_multiple) - $larger_per_page;
		$larger_start_page_end   = n_round($start_page, 10) + $larger_page_multiple;
		$larger_end_page_start   = n_round($end_page, 10) + $larger_page_multiple;
		$larger_end_page_end     = n_round($end_page, 10) + ($larger_per_page);
		if ($larger_start_page_end - $larger_page_multiple == $start_page) {
			$larger_start_page_start = $larger_start_page_start - $larger_page_multiple;
			$larger_start_page_end   = $larger_start_page_end - $larger_page_multiple;
		}
		if ($larger_start_page_start <= 0) {
			$larger_start_page_start = $larger_page_multiple;
		}
		if ($larger_start_page_end > $max_page) {
			$larger_start_page_end = $max_page;
		}
		if ($larger_end_page_end > $max_page) {
			$larger_end_page_end = $max_page;
		}
		if ($max_page > 1 || intval($pagenavi_options['always_show']) == 1) {
			echo $before . '<div class="vh-pages-wrapper span12 body-bg">' . "\n";
			switch (intval($pagenavi_options['style'])) {
				case 1:
					if (!empty($pagenavi_options['pages_text'])) {
						echo '<span class="pages">' . $pagenavi_options['pages_text'] . '</span>&nbsp;';
					}

					if ($start_page >= 2 && $pages_to_show < $max_page) {
						/* $first_page_text = str_replace("%TOTAL_PAGES%", number_format_i18n($max_page), $pagenavi_options['first_text']); */
						echo '<a href="' . esc_url(get_pagenum_link()) . '" class="first no_thickbox icon-angle-left" title="&laquo;"></a>';
						if (!empty($pagenavi_options['dotleft_text'])) {
							echo '<span class="extend">' . $pagenavi_options['dotleft_text'] . '</span>';
						}
					}
					if ($larger_page_to_show > 0 && $larger_start_page_start > 0 && $larger_start_page_end <= $max_page) {
						for ($i = $larger_start_page_start; $i < $larger_start_page_end; $i+=$larger_page_multiple) {
							$page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['page_text']);
							echo '<a href="' . esc_url(get_pagenum_link($i)) . '" class="page" title="' . $page_text . '">' . $page_text . '</a>';
						}
					}
					/* previous_posts_link($pagenavi_options['prev_text']); */
					for ($i = $start_page; $i <= $end_page; $i++) {
						if ($i == $paged) {
							$current_page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['current_text']);
							echo '<span class="current">' . $current_page_text . '</span>';
						} else {
							$page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['page_text']);
							echo '<a href="' . esc_url(get_pagenum_link($i)) . '" class="page" title="' . $page_text . '">' . $page_text . '</a>';
						}
					}
					if ($end_page < $max_page) {
						if (!empty($pagenavi_options['dotright_text'])) {
							echo '<span class="extend">' . $pagenavi_options['dotright_text'] . '</span>';
						}
						/* $last_page_text = str_replace("%TOTAL_PAGES%", number_format_i18n($max_page), $pagenavi_options['last_text']); */
						echo '<a href="' . esc_url(get_pagenum_link($max_page)) . '" class="last no_thickbox icon-angle-right" title="&raquo;"></a>';
					}
					break;
				case 2;
					echo '<form action="' . htmlspecialchars($_SERVER['PHP_SELF']) . '" method="get">' . "\n";
					echo '<select size="1" onchange="document.location.href = this.options[this.selectedIndex].value;">' . "\n";
					for ($i = 1; $i <= $max_page; $i++) {
						$page_num = $i;
						if ($page_num == 1) {
							$page_num = 0;
						}
						if ($i == $paged) {
							$current_page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['current_text']);
							echo '<option value="' . esc_url(get_pagenum_link($page_num)) . '" selected="selected" class="current">' . $current_page_text . "</option>\n";
						} else {
							$page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['page_text']);
							echo '<option value="' . esc_url(get_pagenum_link($page_num)) . '">' . $page_text . "</option>\n";
						}
					}
					echo "</select>\n";
					echo "</form>\n";
					break;
			}
			echo '</div>' . $after . "\n";
		}
	}
}

// Page Navigation: Drop Down Menu (Deprecated)
function wp_pagenavi_dropdown() {
	wp_pagenavi();
}

// Round To The Nearest Value
function n_round($num, $tonearest) {
	return floor($num / $tonearest) * $tonearest;
}

// Page Navigation Options
function pagenavi_init() {
	pagenavi_textdomain();

	// Add Options
	$pagenavi_options                                 = array();
	$pagenavi_options['pages_text']                   = __('', 'wp-pagenavi');
	$pagenavi_options['current_text']                 = '%PAGE_NUMBER%';
	$pagenavi_options['page_text']                    = '%PAGE_NUMBER%';
	$pagenavi_options['first_text']                   = __('&laquo;', 'wp-pagenavi');
	$pagenavi_options['last_text']                    = __('&raquo;', 'wp-pagenavi');
	$pagenavi_options['next_text']                    = __('&raquo;', 'wp-pagenavi');
	$pagenavi_options['prev_text']                    = __('&laquo;', 'wp-pagenavi');
	$pagenavi_options['dotright_text']                = __('...', 'wp-pagenavi');
	$pagenavi_options['dotleft_text']                 = __('...', 'wp-pagenavi');
	$pagenavi_options['style']                        = 1;
	$pagenavi_options['num_pages']                    = 5;
	$pagenavi_options['always_show']                  = 0;
	$pagenavi_options['num_larger_page_numbers']      = 5;
	$pagenavi_options['larger_page_numbers_multiple'] = 5;
	update_option('pagenavi_options', $pagenavi_options);
}