Website/sort and search (#949)

* Disable sort buttons when there is a search query

* Restore sorting order when search query is removed

* Update comment

* Add button to sort by relevance (non-functional)

As discussed in #949. Relatedly also removed the functionality that 
disabled the "sort by color" and "sort alphabetically" buttons (and 
related styling).

* Update sorting behaviour

Refactored to sorting algorithms into a single function and updated 
relevant code. The "sort by relenvance" button is now functional, and is 
automatically actived when the user starts searching, but not when 
updating their search query.

* Restore sorting ordre when search query is removed

* Only sort when needed

* Refactor activing a sorting button/selecting a soring order

* Renaming variables and functions

* Add colors to "order by relevance" button on hover

index.html

@@ -207,6 +207,7 @@
 
             <svg id="sort-color" class="sort-btn active" aria-labelledby="sort-color" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title id="sort-color">Sort by color</title><path d="M9.219 18.857H6.648V.429A.414.414 0 0 0 6.219 0H3.648a.418.418 0 0 0-.308.121.418.418 0 0 0-.121.308v18.428H.648a.4.4 0 0 0-.402.268c-.071.17-.04.326.094.469l4.286 4.287c.098.08.2.119.308.119a.447.447 0 0 0 .308-.119l4.272-4.273a.506.506 0 0 0 .134-.32.417.417 0 0 0-.429-.431z"/><path d="M12.219 3.429h3.429A.412.412 0 0 0 16.076 3V.429A.416.416 0 0 0 15.648 0h-3.429a.414.414 0 0 0-.429.429V3a.414.414 0 0 0 .429.429z"/><path d="M12.219 10.286h6a.42.42 0 0 0 .309-.12.42.42 0 0 0 .121-.308V7.286a.418.418 0 0 0-.121-.308.417.417 0 0 0-.309-.121h-6a.414.414 0 0 0-.308.121.417.417 0 0 0-.12.308v2.572c0 .125.04.228.12.308a.42.42 0 0 0 .308.12z"/><path d="M12.219 17.143h8.572c.125 0 .229-.039.309-.119s.119-.184.119-.309v-2.572c0-.125-.039-.227-.119-.307s-.184-.121-.309-.121h-8.572a.418.418 0 0 0-.308.121.415.415 0 0 0-.12.307v2.572c0 .125.04.229.12.309.081.08.183.119.308.119z"/><path d="M23.67 20.693a.408.408 0 0 0-.307-.121H12.219a.416.416 0 0 0-.429.428v2.572c0 .125.04.227.121.309a.42.42 0 0 0 .308.119h11.144a.414.414 0 0 0 .307-.119.424.424 0 0 0 .121-.309V21a.416.416 0 0 0-.121-.307z"/></svg>
             <svg id="sort-alphabetically" class="sort-btn" aria-labelledby="sort-alphabetically" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title id="sort-alphabetically">Sort alphabetically</title><path d="M10.096 18.857H7.525V.429A.414.414 0 0 0 7.096 0H4.525a.414.414 0 0 0-.429.429v18.429H1.525c-.196 0-.331.089-.402.268-.072.17-.04.326.094.469l4.286 4.286c.098.079.2.119.308.119.116 0 .219-.04.308-.12l4.272-4.272a.506.506 0 0 0 .134-.321.414.414 0 0 0-.429-.43z"/><path d="M20.102 22.474H16.78c-.188 0-.322.009-.402.026l-.188.026V22.5l.148-.147c.133-.16.227-.276.281-.348l4.941-7.099v-1.191h-7.594v3.066h1.607v-1.54h3.107c.16 0 .295-.014.4-.04a.856.856 0 0 0 .102-.007c.039-.004.068-.007.086-.007v.04l-.146.121c-.08.08-.176.2-.281.361L13.9 22.795V24h7.82v-3.12h-1.619v1.594h.001z"/><path d="M21.977 8.866L18.895 0h-2.168l-3.082 8.866h-.936v1.419h3.842V8.866h-1.004l.631-1.929h3.254l.629 1.929h-1.004v1.419h3.857V8.866h-.937zm-5.358-3.402l.977-2.92c.037-.107.07-.236.102-.388s.047-.232.047-.241l.039-.268h.055c0 .036.008.125.025.268l.162.629.963 2.92h-2.37z"/></svg>
+            <svg id="sort-relevance" class="sort-btn" aria-labelledby="sort-relevance" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" display="none"><title id="sort-relevance">Sort by relevance</title><path d="M9.219,18.857H6.648V0.429C6.656,0.201,6.478,0.008,6.25,0H3.648C3.533-0.004,3.421,0.04,3.34,0.121C3.259,0.203,3.215,0.314,3.219,0.429v18.428H0.648c-0.179-0.012-0.344,0.098-0.402,0.268c-0.071,0.17-0.04,0.326,0.094,0.469l4.286,4.287C4.724,23.961,4.826,24,4.934,24c0.114,0.001,0.224-0.041,0.308-0.119l4.272-4.273c0.081-0.086,0.128-0.199,0.134-0.318c0.008-0.23-0.172-0.423-0.402-0.432C9.237,18.857,9.228,18.857,9.219,18.857z"/><path d="M22.971,4.984c0.226-0.22,0.304-0.543,0.207-0.843c-0.099-0.3-0.352-0.515-0.666-0.561l-2.777-0.403c-0.119-0.018-0.221-0.092-0.274-0.199l-1.241-2.519C18.079,0.174,17.797,0,17.479,0c-0.316,0-0.598,0.176-0.737,0.458l-1.243,2.519c-0.054,0.108-0.156,0.183-0.273,0.199L12.445,3.58c-0.311,0.043-0.569,0.261-0.665,0.56c-0.098,0.3-0.019,0.624,0.207,0.843l2.012,1.96c0.086,0.084,0.125,0.207,0.104,0.322l-0.475,2.769c-0.041,0.245,0.021,0.481,0.18,0.667c0.244,0.292,0.674,0.381,1.016,0.201l2.486-1.307c0.104-0.056,0.232-0.054,0.339,0l2.485,1.307C20.256,10.967,20.387,11,20.518,11c0.245,0,0.477-0.109,0.633-0.298c0.156-0.185,0.223-0.429,0.18-0.667l-0.475-2.768c-0.021-0.117,0.02-0.24,0.104-0.322L22.971,4.984z"/><path d="M22.966,17.984c0.227-0.219,0.307-0.543,0.209-0.844c-0.099-0.299-0.354-0.516-0.666-0.561l-2.777-0.404c-0.119-0.018-0.221-0.092-0.274-0.199l-1.241-2.518c-0.141-0.283-0.422-0.46-0.738-0.46s-0.6,0.177-0.738,0.46l-1.242,2.518c-0.054,0.107-0.156,0.184-0.275,0.199l-2.775,0.404c-0.314,0.045-0.568,0.259-0.666,0.561c-0.098,0.301-0.018,0.623,0.207,0.844l2.011,1.961c0.087,0.082,0.124,0.205,0.104,0.322l-0.475,2.769c-0.055,0.312,0.07,0.618,0.328,0.806c0.254,0.186,0.586,0.207,0.865,0.063l2.484-1.307c0.107-0.056,0.234-0.056,0.341,0l2.485,1.307C20.253,23.968,20.384,24,20.515,24c0.172,0,0.34-0.055,0.482-0.158c0.256-0.188,0.383-0.494,0.329-0.806l-0.478-2.769c-0.02-0.117,0.021-0.24,0.104-0.322L22.966,17.984z M20.874,23.115c0.021,0.14-0.029,0.273-0.145,0.354c-0.115,0.086-0.258,0.094-0.385,0.029l-2.487-1.309c-0.118-0.063-0.251-0.096-0.382-0.096s-0.264,0.032-0.385,0.098l-2.485,1.307c-0.124,0.064-0.269,0.057-0.382-0.029c-0.116-0.08-0.168-0.215-0.146-0.354l0.479-2.77c0.045-0.267-0.043-0.539-0.236-0.729l-2.014-1.96c-0.104-0.099-0.135-0.237-0.092-0.371c0.045-0.136,0.154-0.228,0.295-0.249l2.778-0.403c0.269-0.038,0.5-0.207,0.618-0.448l1.242-2.521c0.064-0.127,0.184-0.202,0.326-0.202c0.144,0,0.265,0.075,0.328,0.202l1.242,2.521c0.117,0.241,0.35,0.41,0.617,0.448l2.78,0.403c0.14,0.021,0.249,0.113,0.292,0.249c0.044,0.134,0.011,0.272-0.092,0.371l-2.01,1.96c-0.192,0.189-0.281,0.461-0.235,0.729L20.874,23.115z"/></svg>
         </div>
         <ul class="grid">
             <li class="grid-item grid-item--ad">

site_script.js

@@ -1,12 +1,16 @@
 (function(document) {
-  var queryParameter = 'q',
+  var $grid               = document.querySelector('.grid'),
-      $grid          = document.querySelector('.grid'),
       $icons              = $grid.querySelectorAll('.grid-item:not(.grid-item--ad)'),
       $search             = document.querySelector('.search'),
       $searchClose        = $search.querySelector('.search__close'),
       $searchInput        = $search.querySelector('input'),
       $sortColor          = document.getElementById('sort-color'),
-      $sortAlpha     = document.getElementById('sort-alphabetically');
+      $sortAlphabetically = document.getElementById('sort-alphabetically'),
+      $sortRelevance      = document.getElementById('sort-relevance');
+
+  var queryParameter = 'q',
+      previousQuery  = null,
+      previousOrder  = $sortColor;
 
   // Remove the "disabled" attribute from the search input
   $searchInput.setAttribute('title', 'Search Simple Icons');
@@ -96,18 +100,51 @@
     }).sort(function(a, b) {
       return a.score - b.score;
     }).forEach(function(item, index) {
-      item.element.classList.remove('hidden');
+      var element = item.element;
-
+      element.setAttribute('data-relevance', index);
-      if (query !== '') {
+      element.classList.remove('hidden');
-        // Order according to relevance (i.e. score) if there is a query
-        item.element.style.order = index;
-      } else {
-        // Use color-based order if there is no query
-        item.element.style.removeProperty('order');
-      }
     });
 
     $grid.classList.toggle('search__empty', hiddenCounter == icons.length);
+    if (query === '') {
+      if ($sortRelevance.classList.contains('active')) {
+        selectSortingOrder(previousOrder);
+      }
+
+      $sortRelevance.setAttribute('display', 'none');
+      previousQuery = null;
+    } else {
+      if (previousQuery === null) {
+        selectSortingOrder($sortRelevance);
+      }
+
+      previousQuery = query;
+    }
+  }
+  function sort() {
+    if ($sortColor.classList.contains('active')) {
+      $icons.forEach(icon => { icon.style.order = null; });
+    } else if ($sortAlphabetically.classList.contains('active')) {
+      $icons.forEach(icon => { icon.style.order = icon.getAttribute('order'); });
+    } else if ($sortRelevance.classList.contains('active')) {
+      $icons.forEach(icon => { icon.style.order = icon.getAttribute('data-relevance'); });
+    }
+  }
+  function selectSortingOrder(selected) {
+    selected.classList.add('active');
+
+    var options = [$sortColor, $sortAlphabetically, $sortRelevance];
+    for (var option of options.filter(option => option !== selected)) {
+      option.classList.remove('active');
+    }
+
+    if (selected !== $sortRelevance) {
+      previousOrder = selected;
+    } else {
+      $sortRelevance.removeAttribute('display');
+    }
+
+    sort();
   }
 
   document.addEventListener('DOMContentLoaded', function() {
@@ -142,15 +179,12 @@
   }, false);
 
   $sortColor.addEventListener('click', function() {
-    $icons.forEach(icon => { icon.style.order = null; });
+    selectSortingOrder($sortColor);
-
-    $sortColor.classList.add('active');
-    $sortAlpha.classList.remove('active');
   });
-  $sortAlpha.addEventListener('click', function() {
+  $sortAlphabetically.addEventListener('click', function() {
-    $icons.forEach(icon => { icon.style.order = icon.getAttribute('order'); });
+    selectSortingOrder($sortAlphabetically);
-
+  });
-    $sortAlpha.classList.add('active');
+  $sortRelevance.addEventListener('click', function() {
-    $sortColor.classList.remove('active');
+    selectSortingOrder($sortRelevance);
   });
 })( document );

stylesheet.css

@@ -202,6 +202,10 @@ a.share-button {
   opacity: 1;
 }
 
+#sort-relevance:hover path:not(:nth-of-type(1)) {
+  fill: #fbc02d;
+}
+
 .grid {
   display: flex;
   flex-wrap: wrap;