split button

edit.html

@@ -271,13 +271,16 @@
         </div>
       </section>
       <section id="actions">
-        <div>
-          <button id="save-button" i18n-text="styleSaveLabel" data-hotkey-tooltip="save" disabled></button>
+        <div class="buttons">
+          <div class="split-btn">
+            <button id="save-button" i18n-text="styleSaveLabel" data-hotkey-tooltip="save" disabled></button
+            ><button class="split-btn-pedal usercss-only" i18n-menu-tpl="saveAsTemplate"></button>
+          </div>
           <button id="beautify" i18n-text="styleBeautify"></button>
           <button id="style-settings-btn" i18n-text="settings"></button>
           <button id="cancel-button" i18n-title="styleCancelEditLabel">↩</button>
         </div>
-        <div id="mozilla-format-buttons" class="sectioned-only">
+        <div id="mozilla-format-buttons" class="buttons sectioned-only">
           <button id="from-mozilla" i18n-text="importLabel"></button>
           <button id="to-mozilla" i18n-text="exportLabel"></button>
           <a id="to-mozilla-help" class="svg-inline-wrapper" tabindex="0"
@@ -392,9 +395,6 @@
                 </a>
               </div>
             </div>
-            <div class="options-column usercss-only">
-              <button i18n-text="saveAsTemplate"></button>
-            </div>
           </div>
         </details>
         <details id="publish" data-pref="editor.publish.expanded" class="ignore-pref-if-compact">

edit/edit.css

@@ -260,23 +260,13 @@ input:invalid {
   margin-top: .5rem;
 }
 
-#actions > * {
-  display: inline-flex;
-  flex-wrap: wrap;
-}
-
-#mozilla-format-buttons {
+#actions .buttons {
   display: flex;
   flex-wrap: wrap;
   align-items: center;
 }
 
-#actions > div > a {
-  height: min-content;
-}
-
-#actions button,
-#actions > div > a {
+#actions .buttons > * {
   margin: 0 .2rem .5rem 0;
 }
 
@@ -1065,11 +1055,7 @@ body.linter-disabled .hidden-unless-compact {
     padding: .25rem 0 .5rem;
   }
   #actions {
-    display: flex;
-    flex-wrap: wrap;
     white-space: nowrap;
-    margin: 0;
-    box-sizing: border-box;
   }
   #header input[type="checkbox"] {
     vertical-align: middle;

edit/source-editor.js

@@ -23,7 +23,7 @@ function SourceEditor() {
   $('#header').on('wheel', headerOnScroll);
   $('#sections').textContent = '';
   $('#sections').appendChild($create('.single-editor'));
-  $('[i18n-text="saveAsTemplate"]').onclick = saveTemplate;
+  $('#save-button').onauxclick = e => e.detail === 'tpl' && saveTemplate();
 
   const cm = cmFactory.create($('.single-editor'));
   const sectionFinder = MozSectionFinder(cm);

global.css

@@ -6,6 +6,7 @@ html#stylus #header *:not(#\1transition-suppressor) {
 }
 :root {
   --family: Arial, "Helvetica Neue", Helvetica, system-ui, sans-serif;
+  --bg: #fff;
 }
 body {
   font: normal 12px var(--family);
@@ -33,6 +34,7 @@ button {
   border: 1px solid hsl(0, 0%, 62%);
   font: inherit;
   font-size: 13px;
+  line-height: 1.2;
   color: #000;
   background-color: hsl(0, 0%, 100%);
   background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAeCAYAAADtlXTHAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH4QwGBBwIHvKt6QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAL0lEQVQI12NoaGgQZ2JgYGBkYmBgYGZiYGBggrMY4VxsYsyoskQQCB2MWAxAMhkADVECDhlW9CoAAAAASUVORK5CYII=');
@@ -307,6 +309,39 @@ body.resizing-v > * {
 }
 /* header resizer - end */
 
+.split-btn {
+  position: relative;
+}
+.split-btn-pedal {
+  margin-left: -1px !important;
+  padding-left: .2em !important;
+  padding-right: .2em !important;
+}
+.split-btn-pedal::after {
+  content: '\25BC'; /* down triangle */
+  font-size: 90%;
+}
+.split-btn-pedal.active {
+  box-shadow: inset 0 0 100px rgba(0, 0, 0, .2);
+}
+.split-btn-menu {
+  background: #fff;
+  position: absolute;
+  box-shadow: 2px 3px 7px rgba(0, 0, 0, .5);
+  border: 1px solid hsl(180deg, 50%, 50%);
+  white-space: nowrap;
+  cursor: pointer;
+  padding: .25em 0;
+}
+.split-btn-menu > * {
+  padding: .5em 1em;
+  display: block;
+}
+.split-btn-menu > :hover {
+  background-color: hsla(180deg, 50%, 50%, .25);
+  color: #000;
+}
+
 @supports (-moz-appearance: none) {
   .moz-appearance-bug .svg-icon.checked,
   .moz-appearance-bug .onoffswitch input,

js/dom-on-load.js

@@ -1,4 +1,4 @@
-/* global $ $$ focusAccessibility getEventKeyName */// dom.js
+/* global $$ $ $create focusAccessibility getEventKeyName moveFocus */// dom.js
 /* global debounce */// toolbox.js
 /* global t */// localization.js
 'use strict';
@@ -6,13 +6,14 @@
 /** DOM housekeeping after a page finished loading */
 
 (() => {
+  const SPLIT_BTN_MENU = '.split-btn-menu';
   splitLongTooltips();
   addTooltipsToEllipsized();
   window.on('mousedown', suppressFocusRingOnClick, {passive: true});
   window.on('keydown', keepFocusRingOnTabbing, {passive: true});
   window.on('keypress', clickDummyLinkOnEnter);
   window.on('wheel', changeFocusedInputOnWheel, {capture: true, passive: false});
-  window.on('click', showTooltipNote);
+  window.on('click', e => splitMenu(e) || showTooltipNote(e));
   window.on('resize', () => debounce(addTooltipsToEllipsized, 100));
   // Removing transition-suppressor rule
   const {sheet} = $('link[href$="global.css"]');
@@ -78,19 +79,44 @@
         let el = document.activeElement;
         if (el) {
           el = el.closest('[data-focused-via-click]');
-          if (el) delete el.dataset.focusedViaClick;
+          focusAccessibility.toggle(el, false);
         }
       });
     }
   }
 
+  function splitMenu(event) {
+    const prevMenu = $(SPLIT_BTN_MENU);
+    const prevPedal = (prevMenu || {}).previousElementSibling;
+    const pedal = event.target.closest('.split-btn-pedal');
+    const entry = prevMenu && event.target.closest(SPLIT_BTN_MENU + '>*');
+    if (prevMenu) prevMenu.remove();
+    if (prevPedal) prevPedal.classList.remove('active');
+    if (pedal && pedal !== prevPedal) {
+      const menu = $create(SPLIT_BTN_MENU,
+        Array.from(pedal.attributes, ({name, value}) =>
+          name.startsWith('menu-') &&
+          $create('a', {tabIndex: 0, __cmd: name.split('-').pop()}, value)
+        ));
+      menu.on('focusout', e => e.target === menu && splitMenu(e));
+      pedal.classList.toggle('active');
+      pedal.after(menu);
+      moveFocus(menu, 0);
+      focusAccessibility.toggle(menu.firstChild, focusAccessibility.get(pedal));
+    }
+    if (entry) {
+      prevPedal.previousElementSibling.dispatchEvent(new CustomEvent('auxclick', {
+        detail: entry.__cmd,
+        bubbles: true,
+      }));
+    }
+  }
+
   function suppressFocusRingOnClick({target}) {
     const el = focusAccessibility.closest(target);
     if (el) {
       focusAccessibility.lastFocusedViaClick = true;
-      if (el.dataset.focusedViaClick === undefined) {
-        el.dataset.focusedViaClick = '';
-      }
+      focusAccessibility.toggle(el, true);
     }
   }
 

js/dom.js

@@ -31,6 +31,8 @@ Object.assign(EventTarget.prototype, {
 const focusAccessibility = {
   // last event's focusedViaClick
   lastFocusedViaClick: false,
+  get: el => el && el.dataset.focusedViaClick != null,
+  toggle: (el, state) => el && toggleDataset(el, 'focusedViaClick', state),
   // to avoid a full layout recalc due to changes on body/root
   // we modify the closest focusable element (like input or button or anything with tabindex=0)
   closest(el) {