Merge branch 'emoji-menu-stick-search' into 'master'

Made the search bar on emoji menu sticky

## What does this MR do?

When scrolling down the emoji menu, the search bar disappears. For better UX, the search bar no stays at the top when scrolling.

## Screenshots (if relevant)

![emoji-sticky](/uploads/a5b4773547d3d67342ddcfc07c8f1568/emoji-sticky.gif)

See merge request !4743

app/assets/javascripts/awards_handler.coffee

@@ -341,7 +341,9 @@ class @AwardsHandler
       for emoji in frequentlyUsedEmojis
         $(".emoji-menu-content [data-emoji='#{emoji}']").closest('li').clone().appendTo(ul)
 
-      $('input.emoji-search').after(ul).after($('<h5>').text('Frequently used'))
+      $('.emoji-menu-content')
+        .prepend(ul)
+        .prepend($('<h5>').text('Frequently used'))
 
     @frequentEmojiBlockRendered = true
 
@@ -356,7 +358,7 @@ class @AwardsHandler
 
       if term
         # Generate a search result block
-        h5 = $('<h5>').text('Search results').addClass('emoji-search')
+        h5 = $('<h5>').text('Search results')
         found_emojis = @searchEmojis(term).show()
         ul = $('<ul>').addClass('emoji-menu-list emoji-menu-search').append(found_emojis)
         $('.emoji-menu-content ul, .emoji-menu-content h5').hide()

app/assets/stylesheets/pages/awards.scss

@@ -8,8 +8,9 @@
 .emoji-menu {
   position: absolute;
   margin-top: 3px;
-  z-index: 1000;
-  min-width: 160px;
+  padding: $gl-padding;
+  z-index: 9;
+  width: 300px;
   font-size: 14px;
   background-color: $award-emoji-menu-bg;
   border: 1px solid $award-emoji-menu-border;
@@ -33,18 +34,16 @@
   }
 
   .emoji-menu-content {
-    padding: $gl-padding;
-    width: 300px;
     height: 300px;
     overflow-y: scroll;
+  }
+}
 
-    input.emoji-search {
+.emoji-search {
   background-image: url("data:image/png;base64,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");
   background-repeat: no-repeat;
   background-position: right 5px center;
   background-size: 16px;
-    }
-  }
 }
 
 .emoji-menu-list {

app/views/emojis/index.html.haml

 .emoji-menu
+  = text_field_tag :emoji_search, "", class: "emoji-search search-input form-control", placeholder: "Seach emojis"
   .emoji-menu-content
-    = text_field_tag :emoji_search, "", class: "emoji-search search-input form-control"
     - Gitlab::AwardEmoji.emoji_by_category.each do |category, emojis|
       %h5.emoji-menu-title
         = Gitlab::AwardEmoji::CATEGORIES[category]

features/steps/project/issues/award_emoji.rb

@@ -81,10 +81,8 @@ class Spinach::Features::AwardEmoji < Spinach::FeatureSteps
   end
 
   step 'I search "hand"' do
-    page.within('.emoji-menu-content') do
     fill_in 'emoji_search', with: 'hand'
   end
-  end
 
   step 'I see search result for "hand"' do
     page.within '.emoji-menu-content' do

spec/javascripts/awards_handler_spec.js.coffee

@@ -160,7 +160,6 @@ describe 'AwardsHandler', ->
       expect($('[data-emoji=angel]').is(':visible')).toBe no
       expect($('[data-emoji=anger]').is(':visible')).toBe no
       expect($('[data-emoji=alien]').is(':visible')).toBe yes
-      expect($('h5.emoji-search').is(':visible')).toBe yes
 
 
   describe 'emoji menu', ->

spec/javascripts/fixtures/emoji_menu.coffee

 window.emojiMenu = """
   <div class='emoji-menu'>
-    <div class='emoji-menu-content'>
     <input type="text" name="emoji_search" id="emoji_search" value="" class="emoji-search search-input form-control" />
+    <div class='emoji-menu-content'>
       <h5 class='emoji-menu-title'>
       Emoticons
       </h5>