From f11b6d598c6ece376ff207b9a3d321c3de29c668 Mon Sep 17 00:00:00 2001
From: Sam Rose <sam@gitlab.com>
Date: Tue, 18 Apr 2017 17:42:53 -0400
Subject: Lightbox using Bootstrap modal

---
 app/assets/javascripts/dispatcher.js           |   7 +-
 app/assets/javascripts/gl_lightbox.js          | 133 +++++++++++++------------
 app/assets/javascripts/issue.js                |   1 -
 app/assets/javascripts/merge_request.js        |   1 -
 app/assets/javascripts/notes.js                |   1 -
 app/assets/stylesheets/framework/lightbox.scss |  51 +++-------
 lib/banzai/filter/image_link_filter.rb         |   6 +-
 7 files changed, 92 insertions(+), 108 deletions(-)

diff --git a/app/assets/javascripts/dispatcher.js b/app/assets/javascripts/dispatcher.js
index abb871c3af0..5a0f3598379 100644
--- a/app/assets/javascripts/dispatcher.js
+++ b/app/assets/javascripts/dispatcher.js
@@ -35,7 +35,7 @@
 /* global ShortcutsWiki */
 
 import Issue from './issue';
-
+import Lightbox from './gl_lightbox';
 import BindInOut from './behaviors/bind_in_out';
 import DeleteModal from './branches/branches_delete_modal';
 import Group from './group';
@@ -132,6 +132,7 @@ const ShortcutsBlob = require('./shortcuts_blob');
           new Issue();
           shortcut_handler = new ShortcutsIssuable();
           new ZenMode();
+          new Lightbox();
           break;
         case 'projects:milestones:show':
         case 'groups:milestones:show':
@@ -187,6 +188,7 @@ const ShortcutsBlob = require('./shortcuts_blob');
           shortcut_handler = new ShortcutsNavigation();
           new gl.GLForm($('.issue-form'));
           new IssuableForm($('.issue-form'));
+          new Lightbox();
           new LabelsSelect();
           new MilestoneSelect();
           new gl.IssuableTemplateSelectors();
@@ -198,6 +200,7 @@ const ShortcutsBlob = require('./shortcuts_blob');
           shortcut_handler = new ShortcutsNavigation();
           new gl.GLForm($('.merge-request-form'));
           new IssuableForm($('.merge-request-form'));
+          new Lightbox();
           new LabelsSelect();
           new MilestoneSelect();
           new gl.IssuableTemplateSelectors();
@@ -215,10 +218,12 @@ const ShortcutsBlob = require('./shortcuts_blob');
           new gl.Diff();
           shortcut_handler = new ShortcutsIssuable(true);
           new ZenMode();
+          new Lightbox();
           break;
         case "projects:merge_requests:diffs":
           new gl.Diff();
           new ZenMode();
+          new Lightbox();
           break;
         case 'dashboard:activity':
           new gl.Activities();
diff --git a/app/assets/javascripts/gl_lightbox.js b/app/assets/javascripts/gl_lightbox.js
index 6dd6cfa1a0b..66bc2e14779 100644
--- a/app/assets/javascripts/gl_lightbox.js
+++ b/app/assets/javascripts/gl_lightbox.js
@@ -1,73 +1,82 @@
-/* eslint-disable no-new */
-/* jshint esversion: 6 */
-
-$(() => {
-  const IMAGE_SELECTOR = '.no-attachment-icon';
-
-  class GitLabLightbox {
-    constructor() {
-      this.$lightbox = null;
-      this.$lbLink = null;
-      this.$lbImage = null;
-      this.$closeBtn = null;
-      this.initLightbox();
-      this.addBindings();
-    }
-
-    initLightbox() {
-      /* Create base lightbox template
-      <div class="gl-lightbox">
-        <i class="fa fa-close dismiss"></i>
-        <a href="#" target="_blank">
+export default class Lightbox {
+  constructor(selector) {
+    this.selector = selector || 'a.no-attachment-icon img';
+    this.modal = null;
+    this.modalDialog = null;
+    this.link = null;
+    this.image = null;
+    this.images = null;
+    this.buffer = 60;
+    this.bsMobile = 576;
+    this.maxWidth = 'none';
+    this.template = `
+      <div class="lb-modal modal fade"
+        tabindex="-1"
+        role="dialog"
+        aria-labelledby="">
+      <div class="modal-dialog">
+        <a href="" target="_blank" rel="noopener noreferrer">
           <img src="" alt="" />
         </a>
       </div>
-      */
-      if (!document.querySelector('.gl-lightbox')) {
-        this.$lightbox = $('<div/>', { class: 'gl-lightbox' });
-        this.$closeBtn = $('<i/>', { class: 'fa fa-close dismiss' });
-        this.$lbLink = $('<a/>', { href: '', target: '_blank' });
-        this.$lbImage = $('<img/>', { src: '' });
-        this.$lbLink.append(this.$lbImage);
-        this.$lightbox.append(this.$closeBtn);
-        this.$lightbox.append(this.$lbLink);
-        $('body').append(this.$lightbox);
-      }
-    }
+    </div>
+    `;
 
-    addBindings() {
-      this.$lightbox.on('click', this.hideLightbox.bind(this));
-      $(IMAGE_SELECTOR).on('click', this.showLightbox.bind(this));
-      $(document).on('scroll', this.hideLightbox.bind(this));
-      $(document).on('markdown-preview:fetched', this.addPreviewBindings.bind(this));
-      $(document).on('ajax:success', '.gfm-form', this.addNoteBinding.bind(this));
-    }
+    this.initModal();
+    this.bindImages();
+    this.watchEvents();
+  }
 
-    addPreviewBindings(e, $form) {
-      if (!$form) return;
-      $form.find(IMAGE_SELECTOR).on('click', this.showLightbox.bind(this));
-    }
+  initModal() {
+    this.modal = document.createElement('div');
+    this.modal.innerHTML = this.template;
+    this.modalDialog = this.modal.querySelector('.modal-dialog');
+    this.link = this.modal.querySelector('a');
+    this.image = this.modal.querySelector('img');
+    document.body.appendChild(this.modal);
+  }
 
-    addNoteBinding(e, data) {
-      $(`#note_${data.id} ${IMAGE_SELECTOR}`).on('click',
-       this.showLightbox.bind(this));
-    }
+  bindImages() {
+    this.images = document.querySelectorAll(this.selector);
+    this.images.forEach((image) => {
+      Object.assign(image.dataset, {
+        toggle: 'modal',
+        target: '.lb-modal',
+      });
+      image.addEventListener('click', this.clickHandler.bind(this));
+    });
+  }
 
-    showLightbox(e) {
-      e.preventDefault();
-      this.$lightbox.addClass('show-box');
-      this.$lbLink.attr('href', e.target.src);
-      this.$lbImage.attr('src', e.target.src);
-      this.$lbImage.attr('alt', e.target.alt);
-    }
+  watchEvents() {
+    $(document).on('markdown-preview:fetched', this.addPreviewBindings.bind(this));
+    $(document).on('ajax:success', '.gfm-form', this.addNoteBinding.bind(this));
+  }
+
+  addPreviewBindings(e, $form) {
+    if (!$form) return;
+    const $img = $form.find(this.selector);
+    $img.attr('data-toggle', 'modal');
+    $img.attr('data-target', '.lb-modal');
+    $img.on('click', this.clickHandler.bind(this));
+  }
 
-    hideLightbox() {
-      this.$lightbox.removeClass('show-box');
-    }
+  addNoteBinding(e, data) {
+    const $img = $(`#note_${data.id} ${this.selector}`);
+    $img.attr('data-toggle', 'modal');
+    $img.attr('data-target', '.lb-modal');
+    $img.on('click', this.clickHandler.bind(this));
   }
 
-  window.gl = window.gl || {};
-  window.gl.GitLabLightbox = GitLabLightbox;
+  clickHandler(e) {
+    e.preventDefault();
+    this.maxWidth = Math.min(e.target.naturalWidth, window.innerWidth - this.buffer);
 
-  new GitLabLightbox();
-});
+    this.maxWidth = window.innerWidth > this.bsMobile
+      ? this.maxWidth
+      : 'none';
+
+    this.link.setAttribute('href', e.target.src);
+    this.image.setAttribute('src', e.target.src);
+    this.modalDialog.style.maxWidth = `${this.maxWidth}px`;
+  }
+}
diff --git a/app/assets/javascripts/issue.js b/app/assets/javascripts/issue.js
index e948cc75dcc..694c6177a07 100644
--- a/app/assets/javascripts/issue.js
+++ b/app/assets/javascripts/issue.js
@@ -6,7 +6,6 @@ require('./flash');
 require('~/lib/utils/text_utility');
 require('vendor/jquery.waitforimages');
 require('./task_list');
-require('./gl_lightbox');
 
 class Issue {
   constructor() {
diff --git a/app/assets/javascripts/merge_request.js b/app/assets/javascripts/merge_request.js
index e514c6ddac1..e9ea4616c91 100644
--- a/app/assets/javascripts/merge_request.js
+++ b/app/assets/javascripts/merge_request.js
@@ -19,7 +19,6 @@ require('./merge_request_tabs');
       this.opts = opts != null ? opts : {};
       this.submitNoteForm = bind(this.submitNoteForm, this);
       this.$el = $('.merge-request');
-      this.$lightbox = $('.lightbox');
       this.$('.show-all-commits').on('click', (function(_this) {
         return function() {
           return _this.showAllCommits();
diff --git a/app/assets/javascripts/notes.js b/app/assets/javascripts/notes.js
index 02eec687f23..194c29f4710 100644
--- a/app/assets/javascripts/notes.js
+++ b/app/assets/javascripts/notes.js
@@ -16,7 +16,6 @@ require('./gfm_auto_complete');
 require('vendor/jquery.caret'); // required by jquery.atwho
 require('vendor/jquery.atwho');
 require('./task_list');
-require('./gl_lightbox');
 
 const normalizeNewlines = function(str) {
   return str.replace(/\r\n/g, '\n');
diff --git a/app/assets/stylesheets/framework/lightbox.scss b/app/assets/stylesheets/framework/lightbox.scss
index 9c8b06a500c..851fbc4bbf7 100644
--- a/app/assets/stylesheets/framework/lightbox.scss
+++ b/app/assets/stylesheets/framework/lightbox.scss
@@ -1,46 +1,21 @@
-.gl-lightbox {
-  position: fixed;
-  top: -10vh;
-  left: -100vw;
-  height: 110vh;
-  width: 100vw;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  background-color: $lightbox-bg;
-  z-index: 100;
-  opacity: 0;
-  transition: opacity $lightbox-trans ease-in-out, top $lightbox-trans ease-in-out, left 0s linear $lightbox-trans;
-
-  .dismiss {
-    position: fixed;
-    top: 15px;
-    right: 15px;
-    font-size: 18px;
-    color: $gray-dark;
-    cursor: pointer;
-    opacity: 0;
-    transition: opacity $lightbox-trans ease-in-out;
-
-    &:hover {
-      color: $white-normal;
-    }
-  }
-
+.no-attachment-icon img {
+  cursor: zoom-in;
+}
 
-  &.show-box {
-    top: -5vh;
-    left: 0;
-    opacity: 1;
-    transition: opacity $lightbox-trans ease-in-out, top $lightbox-trans ease-in-out;
+.lb-modal {
+  .modal-dialog {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    overflow: hidden;
 
-    .dismiss {
-      opacity: 1;
+    @media (min-width: 576px) {
+      max-width: none;
     }
   }
 
   img {
-    max-width: 85vw;
-    max-height: 85vh;
+    max-width: 100%;
+    margin: 0 auto;
   }
 }
diff --git a/lib/banzai/filter/image_link_filter.rb b/lib/banzai/filter/image_link_filter.rb
index 123c92fd250..ce23cf2add5 100644
--- a/lib/banzai/filter/image_link_filter.rb
+++ b/lib/banzai/filter/image_link_filter.rb
@@ -9,10 +9,8 @@ module Banzai
         doc.xpath('descendant-or-self::img[not(ancestor::a)]').each do |img|
           link = doc.document.create_element(
             'a',
-            class: 'no-attachment-icon',
-            href: img['src'],
-            target: '_blank',
-            rel: 'noopener noreferrer'
+            href: '#',
+            class: 'no-attachment-icon'
           )
 
           link.children = img.clone
-- 
cgit v1.2.1