1 files changed, 51 insertions, 1 deletions
diff --git a/app/assets/javascripts/diffs/components/compare_versions.vue b/app/assets/javascripts/diffs/components/compare_versions.vue
index 6b1e2bfb34e..7526c5347f7 100644
--- a/app/assets/javascripts/diffs/components/compare_versions.vue
+++ b/app/assets/javascripts/diffs/components/compare_versions.vue
@@ -1,7 +1,8 @@
 <script>
-import { GlTooltipDirective, GlLink, GlButton, GlSprintf } from '@gitlab/ui';
+import { GlTooltipDirective, GlIcon, GlLink, GlButtonGroup, GlButton, GlSprintf } from '@gitlab/ui';
 import { mapActions, mapGetters, mapState } from 'vuex';
 import { __ } from '~/locale';
+import { setUrlParams } from '../../lib/utils/url_utility';
 import { CENTERED_LIMITED_CONTAINER_CLASSES, EVT_EXPAND_ALL_FILES } from '../constants';
 import eventHub from '../event_hub';
 import CompareDropdownLayout from './compare_dropdown_layout.vue';
@@ -11,7 +12,9 @@ import SettingsDropdown from './settings_dropdown.vue';
 export default {
   components: {
     CompareDropdownLayout,
+    GlIcon,
     GlLink,
+    GlButtonGroup,
     GlButton,
     GlSprintf,
     SettingsDropdown,
@@ -56,6 +59,19 @@ export default {
     hasSourceVersions() {
       return this.diffCompareDropdownSourceVersions.length > 0;
     },
+    nextCommitUrl() {
+      return this.commit.next_commit_id
+        ? setUrlParams({ commit_id: this.commit.next_commit_id })
+        : '';
+    },
+    previousCommitUrl() {
+      return this.commit.prev_commit_id
+        ? setUrlParams({ commit_id: this.commit.prev_commit_id })
+        : '';
+    },
+    hasNeighborCommits() {
+      return this.commit && (this.commit.next_commit_id || this.commit.prev_commit_id);
+    },
   },
   created() {
     this.CENTERED_LIMITED_CONTAINER_CLASSES = CENTERED_LIMITED_CONTAINER_CLASSES;
@@ -65,6 +81,7 @@ export default {
     expandAllFiles() {
       eventHub.$emit(EVT_EXPAND_ALL_FILES);
     },
+    ...mapActions('diffs', ['moveToNeighboringCommit']),
   },
 };
 </script>
@@ -84,6 +101,7 @@ export default {
         icon="file-tree"
         class="gl-mr-3 js-toggle-tree-list"
         :title="toggleFileBrowserTitle"
+        :aria-label="toggleFileBrowserTitle"
         :selected="showTreeList"
         @click="setShowTreeList({ showTreeList: !showTreeList })"
       />
@@ -91,6 +109,38 @@ export default {
         {{ __('Viewing commit') }}
         <gl-link :href="commit.commit_url" class="monospace">{{ commit.short_id }}</gl-link>
       </div>
+      <div v-if="hasNeighborCommits" class="commit-nav-buttons ml-3">
+        <gl-button-group>
+          <gl-button
+            :href="previousCommitUrl"
+            :disabled="!commit.prev_commit_id"
+            @click.prevent="moveToNeighboringCommit({ direction: 'previous' })"
+          >
+            <span
+              v-if="!commit.prev_commit_id"
+              v-gl-tooltip
+              class="h-100 w-100 position-absolute position-top-0 position-left-0"
+              :title="__('You\'re at the first commit')"
+            ></span>
+            <gl-icon name="chevron-left" />
+            {{ __('Prev') }}
+          </gl-button>
+          <gl-button
+            :href="nextCommitUrl"
+            :disabled="!commit.next_commit_id"
+            @click.prevent="moveToNeighboringCommit({ direction: 'next' })"
+          >
+            <span
+              v-if="!commit.next_commit_id"
+              v-gl-tooltip
+              class="h-100 w-100 position-absolute position-top-0 position-left-0"
+              :title="__('You\'re at the last commit')"
+            ></span>
+            {{ __('Next') }}
+            <gl-icon name="chevron-right" />
+          </gl-button>
+        </gl-button-group>
+      </div>
       <gl-sprintf
         v-else-if="hasSourceVersions"
         class="d-flex align-items-center compare-versions-container"