Updated compare dropdowns

Closes #18891

app/assets/javascripts/project.js.coffee

@@ -67,7 +67,7 @@ class @Project
         selectable: true
         filterable: true
         filterByText: true
-        fieldName: 'ref'
+        fieldName: $dropdown.data('field-name')
         renderRow: (ref) ->
           if ref.header?
             $('<li />')
@@ -87,5 +87,6 @@ class @Project
         toggleLabel: (obj, $el) ->
           $el.text().trim()
         clicked: (e) ->
-          $dropdown.closest('form').submit()
+          unless $dropdown.hasClass('js-compare-dropdown')
+            $dropdown.closest('form').submit()
       )

app/assets/stylesheets/framework/dropdowns.scss

@@ -48,9 +48,6 @@
   border: 1px solid $dropdown-toggle-border-color;
   border-radius: $border-radius-base;
   outline: 0;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-  overflow: hidden;
   .fa {
     position: absolute;
@@ -61,6 +58,14 @@
     font-size: 10px;
   }
+  .dropdown-toggle-text {
+    display: block;
+    min-height: 19px;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+    overflow: hidden;
+  }
+
   &:hover, {
     border-color: $dropdown-toggle-hover-border-color;

app/assets/stylesheets/pages/projects.scss

@@ -632,3 +632,21 @@ pre.light-well {
     width: 300px;
   }
 }
+
+.compare-input-group {
+  &.input-group .input-group-addon {
+    @media (min-width: $screen-sm-min) {
+      width: 1%;
+    }
+  }
+
+  .dropdown-menu-toggle {
+    width: 100%;
+    border-top-left-radius: 0;
+    border-bottom-left-radius: 0;
+  }
+
+  .dropdown-menu {
+    width: 300px;
+  }
+}

app/views/projects/compare/_form.html.haml

@@ -3,14 +3,18 @@
     - if params[:to] && params[:from]
       = link_to 'switch', {from: params[:to], to: params[:from]}, {class: 'commits-compare-switch has-tooltip', title: 'Switch base of comparison'}
     .form-group
-      .input-group.inline-input-group
+      = hidden_field_tag :from, params[:from]
+      .input-group.inline-input-group.compare-input-group.dropdown
         %span.input-group-addon from
-        = text_field_tag :from, params[:from], class: "form-control", required: true
+        = dropdown_toggle h(params[:from].presence || ''), { toggle: "dropdown", refs_url: refs_namespace_project_path(@project.namespace, @project), field_name: 'from', selected: params[:from] }, { toggle_class: "js-project-refs-dropdown js-compare-dropdown" }
+        = render "ref_dropdown"
     = "..."
     .form-group
-      .input-group.inline-input-group
+      = hidden_field_tag :to, params[:to]
+      .input-group.inline-input-group.compare-input-group.dropdown
         %span.input-group-addon to
-        = text_field_tag :to, params[:to], class: "form-control", required: true
+        = dropdown_toggle h(params[:from].presence || ''), { toggle: "dropdown", refs_url: refs_namespace_project_path(@project.namespace, @project), field_name: 'to', selected: params[:to] }, { toggle_class: "js-project-refs-dropdown js-compare-dropdown" }
+        = render "ref_dropdown"
      
     = button_tag "Compare", class: "btn btn-create commits-compare-btn"
     - if @merge_request.present?
@@ -19,11 +23,3 @@
       = link_to create_mr_path, class: 'prepend-left-10 btn' do
         = icon("plus")
         Create Merge Request
-
-:javascript
-  var availableTags = #{@project.repository.ref_names.to_json};
-
-  $("#from, #to").autocomplete({
-    source: availableTags,
-    minLength: 1
-  });

app/views/projects/compare/_ref_dropdown.html.haml

+.dropdown-menu.dropdown-menu-selectable
+  = dropdown_title "Switch branch/tag"
+  = dropdown_filter "Search branches and tags"
+  = dropdown_content
+  = dropdown_loading

app/views/shared/_ref_switcher.html.haml

@@ -6,7 +6,7 @@
   - @options && @options.each do |key, value|
     = hidden_field_tag key, value, id: nil
   .dropdown
-    = dropdown_toggle dropdown_toggle_text, { toggle: "dropdown", selected: dropdown_toggle_text, ref: @ref, refs_url: refs_namespace_project_path(@project.namespace, @project) }, { toggle_class: "js-project-refs-dropdown" }
+    = dropdown_toggle dropdown_toggle_text, { toggle: "dropdown", selected: dropdown_toggle_text, field_name: 'ref', ref: @ref, refs_url: refs_namespace_project_path(@project.namespace, @project) }, { toggle_class: "js-project-refs-dropdown" }
     .dropdown-menu.dropdown-menu-selectable{ class: ("dropdown-menu-align-right" if local_assigns[:align_right]) }
       = dropdown_title "Switch branch/tag"
       = dropdown_filter "Search branches and tags"