From dc5aa58c5045fdca38bd3f58a52d2d9c51b9273a Mon Sep 17 00:00:00 2001
From: mateuswetah <mateus.m.luna@gmail.com>
Date: Wed, 22 Jul 2020 12:07:11 -0300
Subject: [PATCH] Adds option to change navigation item section label. If no
 query is passed, uses WordPress default strategy for displaying next and
 previous links.

---
 src/functions/customizer.php                  | 29 +++++++++++++++++--
 .../single-items-navigation.php               | 21 ++++++++++++--
 2 files changed, 44 insertions(+), 6 deletions(-)

diff --git a/src/functions/customizer.php b/src/functions/customizer.php
index 105b7e5..ed8dfb5 100644
--- a/src/functions/customizer.php
+++ b/src/functions/customizer.php
@@ -450,6 +450,29 @@ function tainacan_customize_register( $wp_customize ) {
 			'render_callback' => '__return_false',
 			'fallback_refresh' => true
 			) );
+
+		/**
+		 * Adds option to configure Item Navigation section label.
+		 */
+		$wp_customize->add_setting( 'tainacan_single_item_navigation_section_label', array(
+			'type' 		 => 'theme_mod',
+			'capability' => 'edit_theme_options',
+			'default' 	 => __('Continue browsing', 'tainacan-interface'),
+			'transport'  => 'postMessage',
+			'sanitize_callback'  => 'sanitize_text_field'
+			) );
+		$wp_customize->add_control( 'tainacan_single_item_navigation_section_label', array(
+			'type' 	   	  => 'text',
+			'priority' 	  => 0, // Within the section.
+			'section'  	  => 'tainacan_single_item_page',
+			'label'    	  => __( 'Label for the "Items navigation" or "Continue browsing" section', 'tainacan-interface' ),
+			'description' => __( 'Leave blank it for not displaying any label.', 'tainacan-interface' )
+			) );
+		$wp_customize->selective_refresh->add_partial( 'tainacan_single_item_navigation_section_label', array(
+			'selector' => '#single-item-navigation-label',
+			'render_callback' => '__return_false',
+			'fallback_refresh' => true
+			) );
 		
 		/**
 		 * Adds options to hide attachments file names on carousel.
@@ -633,7 +656,7 @@ function tainacan_customize_register( $wp_customize ) {
 		$wp_customize->add_setting( 'tainacan_single_item_navigation_options', array(
 			'type' 		 => 'theme_mod',
 			'capability' => 'edit_theme_options',
-			'default' 	 => 'none',
+			'default' 	 => 'thumbnail_small',
 			'transport'  => 'refresh',
 			'sanitize_callback' => 'tainacan_sanitize_single_item_navigation_links_options',
 			) );
@@ -641,8 +664,8 @@ function tainacan_customize_register( $wp_customize ) {
 			'type' 	   	  => 'select',
 			'priority' 	  => 3, // Within the section.
 			'section'  	  => 'tainacan_single_item_page',
-			'label'    	  => __( 'Navigation links to other items', 'tainacan-interface' ),
-			'description' => __( 'Sets how next and previous items links will be displayed. This links only obey creation date order inside their collection.', 'tainacan-interface' ),
+			'label'    	  => __( 'Navigation links to adjacent items', 'tainacan-interface' ),
+			'description' => __( 'Sets how next and previous items links will be displayed. If your Tainacan version is bellow 0.17, this links only obey creation date order inside their collection.', 'tainacan-interface' ),
 			'choices'	  => tainacan_get_single_item_navigation_links_options()
 			) );
 
diff --git a/src/template-parts/single-items-navigation.php b/src/template-parts/single-items-navigation.php
index 34f60b5..ae79dab 100644
--- a/src/template-parts/single-items-navigation.php
+++ b/src/template-parts/single-items-navigation.php
@@ -14,6 +14,17 @@
         } else {
             $previous_link_url = false;
         }
+
+        // In this case, the user entered the page without any query params.
+        if (!isset($adjacent_items['previous']) && !isset($adjacent_items['previous'])) {
+             //Get the links to the Previous and Next Post
+            $previous_link_url = get_permalink( get_previous_post() );
+            $next_link_url = get_permalink( get_next_post() );
+
+            //Get the title of the previous post and next post
+            $previous_title = get_the_title( get_previous_post() );
+            $next_title = get_the_title( get_next_post() );
+        }
     } else {
         //Get the links to the Previous and Next Post
         $previous_link_url = get_permalink( get_previous_post() );
@@ -27,7 +38,7 @@
     $previous = '';
     $next = '';
 
-    switch (get_theme_mod('tainacan_single_item_navigation_options', 'none')) {
+    switch (get_theme_mod('tainacan_single_item_navigation_options', 'thumbnail_small')) {
 
         case 'link':
             $previous = $previous_link_url === false ? '' : '<a rel="prev" href="' . $previous_link_url . '"><i class="tainacan-icon tainacan-icon-arrowleft tainacan-icon-30px"></i>&nbsp; ' . $previous_title . '</a>';
@@ -94,9 +105,13 @@
         return '';
     }
 ?>
-<?php if ($previous !== '' && $next !== '') : ?>
+<?php if ($previous !== '' || $next !== '') : ?>
     <div class="tainacan-single-post">
-        <h2 class="title-content-items"><?php echo __('Also in this collection', 'tainacan-interface') ?></h2>
+        <?php if ( get_theme_mod('tainacan_single_item_navigation_section_label', __( 'Continue browsing', 'tainacan-interface' )) != '') : ?>
+            <h2 class="title-content-items" id="single-item-navigation-label">
+                <?php echo get_theme_mod('tainacan_single_item_navigation_section_label', __('Continue browsing', 'tainacan-interface')); ?>
+            </h2>
+        <?php endif; ?>
         <div id="item-single-navigation" class="d-flex justify-content-between margin-two-column">
             <div class="pagination">
                 <?php echo $previous; ?>