Remove deprecated dropbox and add sync button

_locales/en/messages.json

@@ -1421,6 +1421,10 @@
     "message": "As a security precaution, the browser prohibits extensions from affecting its built-in pages (like chrome://version, the standard new tab page as of Chrome 61, about:addons, and so on) as well as other extensions' pages. Each browser also restricts access to its own extensions gallery (like Chrome Web Store or AMO).",
     "description": "Sub-note in the toolbar pop-up when on a URL Stylus can't affect"
   },
+  "syncLabel": {
+    "message": "Sync to cloud",
+    "description": "Sync button text"
+  },
   "syncStorageErrorSaving": {
     "message": "The value cannot be saved. Try reducing the amount of text.",
     "description": "Displayed when trying to save an excessively big value via storage.sync API"

manage.html

@@ -368,30 +368,9 @@
         <summary><h2 id="backup-title" i18n-text="backupButtons"></h2></summary>
         <span id="backup-message" i18n-text="backupMessage"></span>
         <div id="backup-buttons">
-          <div class="dropdown">
-            <button class="dropbtn">
-              <span>Export</span>
-              <svg class="svg-icon select-arrow"><use xlink:href="#svg-icon-select-arrow"/></svg>
-            </button>
-
-            <div class="dropdown-content">
-              <a href="#" id="file-all-styles" i18n-text="bckpInstStyles"></a>
-              <a id="sync-dropbox-export" i18n-text="syncDropboxStyles" i18n-title="syncDropboxDeprecated"></a>
-            </div>
-          </div>
-
-          <div class="dropdown">
-            <button class="dropbtn">
-              <span>Import</span>
-              <svg class="svg-icon select-arrow"><use xlink:href="#svg-icon-select-arrow"/></svg>
-            </button>
-
-            <div class="dropdown-content">
-              <a href="#" id="unfile-all-styles" i18n-text="retrieveBckp"></a>
-              <a id="sync-dropbox-import" i18n-text="retrieveDropboxSync" i18n-title="syncDropboxDeprecated"></a>
-            </div>
-          </div>
-
+          <button id="file-all-styles" i18n-text="exportLabel"></button>
+          <button id="unfile-all-styles" i18n-text="importLabel"></button>
+          <button id="sync-styles" i18n-text="syncLabel"></button>
         </div>
       </details>
 

manage/import-export.js

@@ -11,14 +11,8 @@ let bulkChangeQueue = [];
 let bulkChangeTime = 0;
 
 onDOMready().then(() => {
-  $('#file-all-styles').onclick = event => {
-    event.preventDefault();
-    exportToFile();
-  };
-  $('#unfile-all-styles').onclick = event => {
-    event.preventDefault();
-    importFromFile({fileTypeFilter: STYLUS_BACKUP_FILE_EXT});
-  };
+  $('#file-all-styles').onclick = () => exportToFile();
+  $('#unfile-all-styles').onclick = () => importFromFile({fileTypeFilter: STYLUS_BACKUP_FILE_EXT});
 
   Object.assign(document.body, {
     ondragover(event) {

manage/manage.css

@@ -291,7 +291,8 @@ a:hover {
   padding-top: .1rem;
 }
 
-#options-buttons button,
+#options-buttons > a,
+#options-buttons > button,
 #backup-buttons button {
   margin: 0 .2rem .5rem 0;
 }
@@ -1046,54 +1047,6 @@ input[id^="manage.newUI"] {
   text-overflow: ellipsis;
 }
 
-/* export/import buttons */
-#backup-buttons .dropbtn {
-  padding: 3px 7px;
-  cursor: pointer;
-  text-overflow: inherit;
-}
-
-#backup-buttons .dropbtn span {
-  display: inline-block;
-  margin-right: 12px;
-}
-
-#backup-buttons .dropdown {
-  position: relative;
-  display: inline-block;
-}
-
-#backup-buttons .dropdown-content {
-  display: none;
-  position: absolute;
-  background-color: #f9f9f9;
-  min-width: 160px;
-  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
-  z-index: 1;
-}
-
-#backup-buttons .dropdown-content a {
-  color: black;
-  padding: 8px;
-  text-decoration: none;
-  display: block;
-}
-
-#backup-buttons .dropdown-content a:hover {
-  /* background-color: #f2f2f2 */
-  background-color: #e9e9e9
-}
-
-#backup-buttons .dropdown:hover .dropdown-content {
-  display: block;
-}
-
-#backup-buttons .dropdown:hover .dropbtn {
-  background-color: hsl(0, 0%, 95%);
-  border-color: hsl(0, 0%, 52%);
-  /* background-color: #3e8e41; */
-}
-
 /* sort font */
 @font-face {
   font-family: 'sorticon';
@@ -1302,14 +1255,3 @@ input[id^="manage.newUI"] {
     margin-left: -2px;
   }
 }
-
-/* Deprecated dropbox backup (dropbox-sync) */
-#sync-dropbox-export,
-#sync-dropbox-import {
-  opacity: 0.5;
-  cursor: not-allowed;
-}
-#backup-buttons .dropdown-content #sync-dropbox-export:hover,
-#backup-buttons .dropdown-content #sync-dropbox-import:hover {
-  background: transparent;
-}

manage/manage.js

@@ -86,9 +86,8 @@ function onRuntimeMessage(msg) {
 function initGlobalEvents() {
   installed = $('#installed');
   installed.onclick = handleEvent.entryClicked;
-  $('#manage-options-button').onclick = () => {
-    router.updateHash('#stylus-options');
-  };
+  $('#manage-options-button').onclick = () => router.updateHash('#stylus-options');
+  $('#sync-styles').onclick = () => router.updateHash('#stylus-options');
   {
     const btn = $('#manage-shortcuts-button');
     btn.onclick = btn.onclick || (() => openURL({url: URLS.configureCommands}));