Rewrite prev-next with enw lang. selector

assets/_main.scss

@@ -250,11 +250,21 @@ body[dir="rtl"] .book-menu {
   padding-top: $padding-16;
   font-size: $font-size-14;
 
+  a {
+    margin: $padding-8 0;
+  }
+
   img {
     height: 1em;
     width: 1em;
+    
+    &:first-child {
       margin-inline-end: $padding-8;
     }
+    &:last-child {
+      margin-inline-start: $padding-8;
+    }
+  }
 }
 
 .book-comments {

exampleSite/resources/_gen/assets/scss/book.scss_50fc8c04e12a2f59027287995557ceff.json

@@ -1 +1 @@
-{"Target":"book.min.8599444fcc48ee6b435b5b62c955ab7d914fa1e2a453df90c4b97cc9769665d1.css","MediaType":"text/css","Data":{"Integrity":"sha256-hZlET8xI7mtDW1tiyVWrfZFPoeKkU9+QxLl8yXaWZdE="}}
+{"Target":"book.min.ad694c0f1601cd801d432bdb4a6abae57aa202e0cec7e44e2f6ab46fbe7b628c.css","MediaType":"text/css","Data":{"Integrity":"sha256-rWlMDxYBzYAdQyvbSmq65XqiAuDOx+ROL2q0b757Yow="}}

layouts/partials/docs/footer.html

@@ -1,27 +1,25 @@
 <div class="flex flex-wrap justify-between">
 
 {{ if and .GitInfo .Site.Params.BookRepo }}
-  <div>
   {{- $date := partial "docs/date" (dict "Date" .GitInfo.AuthorDate.Local "Format" .Site.Params.BookDateFormat) -}}
   {{- $commitPath := default "commit" .Site.Params.BookCommitPath -}}
   <a class="flex align-center" href="{{ .Site.Params.BookRepo }}/{{ $commitPath }}/{{ .GitInfo.Hash }}" title='{{ i18n "Last modified by" }} {{ .GitInfo.AuthorName }} | {{ $date }}' target="_blank" rel="noopener">
     <img src="{{ "svg/calendar.svg" | relURL }}" class="book-icon" alt="Calendar" />
     <span>{{ $date }}</span>
   </a>
-  </div>
 {{ end }}
 
 {{ if and .File .Site.Params.BookRepo .Site.Params.BookEditPath }}
-  <div>
   <a class="flex align-center" href="{{ .Site.Params.BookRepo }}/{{ .Site.Params.BookEditPath }}/{{ .Site.Params.contentDir | default "content" }}/{{ replace .File.Path "\\" "/" }}" target="_blank" rel="noopener">
     <img src="{{ "svg/edit.svg" | relURL }}" class="book-icon" alt="Edit" />
     <span>{{ i18n "Edit this page" }}</span>
   </a>
-  </div>
 {{ end }}
 
 </div>
 
+{{ partial "docs/prev-next" . }}
+
 {{ $script := resources.Get "clipboard.js" | resources.Minify }}
 {{ with $script.Content }}
   <script>{{ . | safeJS }}</script>

layouts/partials/docs/prev-next-cache.html

@@ -0,0 +1,14 @@
+{{ $scratch := newScratch }}
+{{ template "recurse" (dict "Scratch" $scratch "Sections" .) }}
+{{ define "recurse" }}
+  {{ range .Sections }}
+    {{ if and .Content (not .Params.BookHidden) }}
+      {{ $.Scratch.Add "BookPages" (slice .) }}
+    {{ end }}
+    {{ if .IsSection }}
+      {{ template "recurse" (dict "Scratch" $.Scratch "Sections" .Pages) }}
+    {{ end }}
+  {{ end }}
+{{ end }}
+
+{{ return $scratch.Get "BookPages" }}

layouts/partials/docs/prev-next.html

@@ -0,0 +1,27 @@
+{{ $bookSection := default "docs" .Site.Params.BookSection  }}
+{{ if eq $bookSection "*" }}
+  {{ $bookSection = "/" }}{{/* Backward compatibility */}}
+{{ end }}
+
+{{ with .Site.GetPage $bookSection }}
+  {{ $pages := partialCached "docs/prev-next-cache" .Pages }}
+  {{ $prev := $pages.Next $ }}
+  {{ $next := $pages.Prev $ }}
+
+  {{- if or $prev $next }}
+  <div class="flex flex-wrap justify-between">
+    {{ with $prev }}
+      <a href="{{ .RelPermalink }}" class="flex align-center float-left book-icon">
+        <img src="{{ "svg/backward.svg" | relURL }}" alt="Previous" title="{{ partial "docs/title" . }}" />
+        <span>{{ partial "docs/title" . }}</span>
+      </a>
+    {{ end }}
+    {{ with $next }}
+      <a href="{{ .RelPermalink }}" class="flex align-center float-right book-icon">
+        <span>{{ partial "docs/title" . }}</span>
+        <img src="{{ "svg/forward.svg" | relURL }}" alt="Next" title="{{ partial "docs/title" . }}" />
+      </a>
+    {{ end }}
+  </div>
+  {{ end -}}
+{{ end }}

static/svg/backward.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M20 11H7.83l5.59-5.59L12 4l-8 8 8 8 1.41-1.41L7.83 13H20v-2z"/></svg>

static/svg/forward.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M12 4l-1.41 1.41L16.17 11H4v2h12.17l-5.58 5.59L12 20l8-8z"/></svg>