Resolve all comments button

app/assets/javascripts/line_comments/application.js.coffee

 #= require vue
+#= require_directory ./stores
 #= require_directory ./components
 
 $ ->
   new Vue
     el: '#notes'
+
+  new Vue
+    el: '#resolve-all-app'

app/assets/javascripts/line_comments/components/resolve_all.js.coffee

+ResolveAll = Vue.extend
+  data: ->
+    { comments: CommentsStore.state }
+  computed:
+    resolved: ->
+      resolvedCount = 0
+      for noteId, resolved of this.comments
+        resolvedCount++ if resolved
+      resolvedCount
+    commentsCount: ->
+      Object.keys(this.comments).length
+    buttonText: ->
+      if this.resolved is this.commentsCount then 'Un-resolve all' else 'Resolve all'
+  methods:
+    updateAll: ->
+      resolveAll = !(this.resolved is this.commentsCount)
+      CommentsStore.updateAll(resolveAll)
+
+Vue.component 'resolve-all', ResolveAll

app/assets/javascripts/line_comments/components/line_btn.js.coffee → app/assets/javascripts/line_comments/components/resolve_btn.js.coffee

-LineBtn = Vue.extend
+ResolveBtn = Vue.extend
   props:
     noteId: Number
     resolved: Boolean
+  data: -> comments: CommentsStore.state
   computed:
     buttonText: ->
-      if this.resolved then "Mark as un-resolved" else "Mark as resolved"
+      if this.comments[this.noteId] then "Mark as un-resolved" else "Mark as resolved"
+    isResolved: -> this.comments[this.noteId]
   methods:
     updateTooltip: ->
       $(this.$el)
         .tooltip('hide')
         .tooltip('fixTitle')
     resolve: ->
-      this.$set('resolved', !this.resolved)
+      CommentsStore.update(this.noteId, !this.comments[this.noteId])
+
       this.$nextTick this.updateTooltip
   compiled: ->
     $(this.$el).tooltip()
+  created: ->
+    CommentsStore.create(this.noteId, this.resolved)
 
-Vue.component 'line-btn', LineBtn
+Vue.component 'resolve-btn', ResolveBtn

app/assets/javascripts/line_comments/stores/comments.js.coffee

+@CommentsStore =
+  state: {}
+  create: (id, resolved) ->
+    Vue.set(this.state, id, resolved)
+  update: (id, resolved) ->
+    this.state[id] = resolved
+  updateAll: (state) ->
+    for id,resolved of this.state
+      this.update(id, state) if resolved isnt state

app/assets/stylesheets/behaviors.scss

@@ -20,3 +20,7 @@
     .turn-off { display: block; }
   }
 }
+
+[v-cloak="true"] {
+  display: none;
+}

app/views/projects/merge_requests/_show.html.haml

@@ -44,7 +44,15 @@
         = succeed '.' do
           = link_to "command line", "#modal_merge_info", class: "how_to_merge_link vlink", title: "How To Merge", "data-toggle" => "modal"
 
-    - if @commits_count.nonzero?
+    #resolve-all-app{ "v-cloak" => true }
+      %resolve-all{ "inline-template" => true }
+        .line-resolve-all{ "v-show" => "commentsCount > 0" }
+          %button.btn.btn-gray{ type: "button", "aria-label" => "Resolve all", "v-on:click" => "updateAll" }
+            {{ buttonText }}
+          %span.line-resolve-text
+            {{ resolved }}/{{ commentsCount }} comments resolved
+
+    - if @commits.nonzero?
       %ul.merge-request-tabs.nav-links.no-top.no-bottom
         %li.notes-tab
           = link_to namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: 'div#notes', action: 'notes', toggle: 'tab'} do

app/views/projects/notes/_note.html.haml

@@ -21,8 +21,8 @@
           - if access and not note.system
             %span.note-role.hidden-xs= access
           - unless note.system
-            %line-btn{ ":note-id" => note.id, ":resolved" => "false", "inline-template" => true }
-              %button.note-action-button.line-resolve-btn{ type: "button", "v-bind:class" => "{ 'is-active': resolved }", "v-bind:aria-label" => "buttonText", "v-on:click" => "resolve", "v-bind:title" => "buttonText" }
+            %resolve-btn{ ":note-id" => note.id, ":resolved" => "false", "inline-template" => true }
+              %button.note-action-button.line-resolve-btn{ type: "button", "v-bind:class" => "{ 'is-active': isResolved }", "v-bind:aria-label" => "buttonText", "v-on:click" => "resolve", "v-bind:title" => "buttonText" }
                 = icon("check")
           - if current_user and not note.system
             = link_to '#', title: 'Award Emoji', class: 'note-action-button note-emoji-button js-add-award js-note-emoji', data: { position: 'right' } do