1 files changed, 45 insertions, 1 deletions
diff --git a/app/assets/javascripts/boards/toggle_focus.js b/app/assets/javascripts/boards/toggle_focus.js
index 2d1ec238274..a437a34c948 100644
--- a/app/assets/javascripts/boards/toggle_focus.js
+++ b/app/assets/javascripts/boards/toggle_focus.js
@@ -1 +1,45 @@
-export default () => {};
+import $ from 'jquery';
+import Vue from 'vue';
+import collapseIcon from './icons/fullscreen_collapse.svg';
+import expandIcon from './icons/fullscreen_expand.svg';
+
+export default (ModalStore, boardsStore) => {
+  const issueBoardsContent = document.querySelector('.content-wrapper > .js-focus-mode-board');
+
+  return new Vue({
+    el: document.getElementById('js-toggle-focus-btn'),
+    data: {
+      modal: ModalStore.store,
+      store: boardsStore.state,
+      isFullscreen: false,
+    },
+    methods: {
+      toggleFocusMode() {
+        $(this.$refs.toggleFocusModeButton).tooltip('hide');
+        issueBoardsContent.classList.toggle('is-focused');
+
+        this.isFullscreen = !this.isFullscreen;
+      },
+    },
+    template: `
+      <div class="board-extra-actions">
+        <a
+          href="#"
+          class="btn btn-default has-tooltip prepend-left-10 js-focus-mode-btn"
+          data-qa-selector="focus_mode_button"
+          role="button"
+          aria-label="Toggle focus mode"
+          title="Toggle focus mode"
+          ref="toggleFocusModeButton"
+          @click="toggleFocusMode">
+          <span v-show="isFullscreen">
+            ${collapseIcon}
+          </span>
+          <span v-show="!isFullscreen">
+            ${expandIcon}
+          </span>
+        </a>
+      </div>
+    `,
+  });
+};