1 files changed, 196 insertions, 0 deletions

diff --git a/comm/mail/themes/shared/mail/unifiedToolbarCustomizationPane.css b/comm/mail/themes/shared/mail/unifiedToolbarCustomizationPane.css
new file mode 100644
index 0000000000..bd8f73795e
--- /dev/null
+++ b/comm/mail/themes/shared/mail/unifiedToolbarCustomizationPane.css
@@ -0,0 +1,196 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* This is the main stylesheet in the unified-toolbar-customization-pane shadowRoot. */
+
+@import url("chrome://messenger/skin/widgets.css");
+@import url("chrome://messenger/skin/shared/unifiedToolbarCustomizableItems.css");
+@import url("chrome://messenger/skin/shared/unifiedToolbarShared.css");
+
+.search-button-icon {
+  content: var(--icon-search);
+}
+
+.palette-search {
+  display: block;
+  margin: 12px 0;
+  max-width: 50ch;
+  height: 2em;
+  width: 100%;
+  align-self: center;
+}
+
+[is="customization-target"],
+[is="customization-palette"] {
+  display: flex;
+  list-style-type: none;
+  margin: 0;
+  padding: 0;
+  flex-shrink: 0;
+}
+
+[is="customization-target"]:focus-visible,
+[is="customization-palette"]:focus-visible {
+  outline: var(--focus-outline);
+  outline-color: transparent;
+}
+
+.toolbar-target {
+  /* TODO this should match actual titlebar dimensions */
+  background: var(--layout-background-3);
+  border-radius: 6px;
+  padding-inline: 9px;
+  padding-block: var(--unified-toolbar-padding);
+  margin: 1rem;
+  max-width: 100vw;
+  border: 1px solid var(--layout-border-0);
+  gap: 6px;
+  min-height: calc(1rem + 3 * var(--button-padding));
+}
+
+.toolbar-target .button.unified-toolbar-button {
+  margin-block: 0;
+}
+
+.toolbar-target .spacer {
+  color: color-mix(in srgb, var(--layout-color-1) 50%, transparent);
+  background-image: linear-gradient(to left, currentColor 0%, currentColor 50%, transparent 50%, transparent 100%);
+  background-size: 9px 1px;
+  background-position: 5px center;
+  background-repeat: repeat-x;
+  position: relative;
+  height: 100%;
+  -moz-context-properties: stroke;
+  stroke: currentColor;
+}
+
+.toolbar-target .spacer::before,
+.toolbar-target .spacer::after {
+  content: '';
+  width: 16px;
+  position: absolute;
+  height: 100%;
+  background-repeat: no-repeat;
+  background-position-y: center;
+}
+
+.toolbar-target .spacer::before {
+  background-image: var(--icon-nav-left);
+  left: -5px;
+}
+
+.toolbar-target .spacer::after {
+  background-image: var(--icon-nav-right);
+  right: -5px;
+}
+
+.toolbar-target .throbber .throbber-icon {
+  visibility: visible;
+}
+
+/* buttons are disabled in the preview, but we want them to look active. */
+.toolbar-target .unified-toolbar-button[disabled] {
+  color: inherit;
+  opacity: 1;
+}
+
+[is="customization-target"] [is="customizable-element"] .live-content {
+  pointer-events: none;
+}
+
+[is="customization-target"] [is="customizable-element"] .preview {
+  display: none;
+}
+
+[is="customization-target"] .collapsed {
+  display: none;
+}
+
+.customization-palettes {
+  overflow: auto;
+}
+
+[is="customization-palette"] {
+  flex-wrap: wrap;
+  gap: 1rem;
+  margin: 1rem;
+}
+
+[is="customization-palette"]:not(:last-of-type) {
+  margin-block-end: 2.5rem;
+}
+
+h2 {
+  margin-inline: 1rem;
+  user-select: none;
+}
+
+[is="customizable-element"] {
+  margin: 0;
+  padding: 0;
+}
+
+[is="customization-target"]:focus-within [is="customizable-element"][aria-selected="true"],
+[is="customization-palette"]:focus-within [is="customizable-element"][aria-selected="true"] {
+  outline: var(--focus-outline);
+  outline-offset: var(--focus-outline-offset);
+}
+
+[is="customization-palette"] [is="customizable-element"] {
+  width: 96px;
+  height: calc(25px + 2.4rem); /* icon: 16px, gap: 9px, 2.4rem = ~2lh */
+  background: var(--layout-background-3);
+  padding: 9px;
+  border-radius: 6px;
+  overflow: hidden;
+}
+
+[is="customization-palette"] [is="customizable-element"] .live-content {
+  display: none;
+}
+
+.preview {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  text-align: center;
+  overflow: hidden;
+  gap: 9px;
+  -moz-context-properties: fill, stroke;
+  fill: color-mix(in srgb, currentColor 20%, transparent);
+  stroke: currentColor;
+}
+
+.preview-icon {
+  height: 16px;
+  width: 16px;
+  object-fit: contain;
+  pointer-events: none;
+}
+
+.preview-label {
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+  overflow-wrap: break-word;
+  text-overflow: ellipsis;
+  user-select: none;
+  padding-inline: 3px;
+  max-width: 100%;
+}
+
+/* Drag and drop state styling */
+
+.drop-before {
+  border-inline-start: 1px solid currentColor;
+}
+
+.drop-after {
+  border-inline-end: 1px solid currentColor;
+}
+
+.dragging {
+  visibility: hidden;
+}