Lit-html: CSS returns null without an error message to troubleshoot
Description
When trying to leverage the CSS for Quill using the component pattern and following the shared-styles example the css method returns null on a valid CSS string (copied from Quill snow css and validated using jigsaw validator as valid CSS
Steps to Reproduce
- Write this code
import { css } from 'lit-element';
export const RTFStyles = css`
.ql-container {
box-sizing: border-box;
font-family: Helvetica, Arial, sans-serif;
font-size: 13px;
height: 100%;
margin: 0px;
position: relative;
}
.ql-container.ql-disabled .ql-tooltip {
visibility: hidden;
}
.ql-container.ql-disabled .ql-editor ul[data-checked] > li::before {
pointer-events: none;
}
.ql-clipboard {
left: -100000px;
height: 1px;
overflow-y: hidden;
position: absolute;
top: 50%;
}
.ql-clipboard p {
margin: 0;
padding: 0;
}
.ql-editor {
box-sizing: border-box;
line-height: 1.42;
height: 100%;
outline: none;
overflow-y: auto;
padding: 12px 15px;
tab-size: 4;
-moz-tab-size: 4;
text-align: left;
white-space: pre-wrap;
word-wrap: break-word;
}
.ql-editor > * {
cursor: text;
}
.ql-editor p,
.ql-editor ol,
.ql-editor ul,
.ql-editor pre,
.ql-editor blockquote,
.ql-editor h1,
.ql-editor h2,
.ql-editor h3,
.ql-editor h4,
.ql-editor h5,
.ql-editor h6 {
margin: 0;
padding: 0;
counter-reset: list-1 list-2 list-3 list-4 list-5 list-6 list-7 list-8 list-9;
}
.ql-editor ol,
.ql-editor ul {
padding-left: 1.5em;
}
.ql-editor ol > li,
.ql-editor ul > li {
list-style-type: none;
}
.ql-editor ul > li::before {
content: '\2022';
}
.ql-editor ul[data-checked=true],
.ql-editor ul[data-checked=false] {
pointer-events: none;
}
.ql-editor ul[data-checked=true] > li *,
.ql-editor ul[data-checked=false] > li * {
pointer-events: all;
}
.ql-editor ul[data-checked=true] > li::before,
.ql-editor ul[data-checked=false] > li::before {
color: #777;
cursor: pointer;
pointer-events: all;
}
.ql-editor ul[data-checked=true] > li::before {
content: '\2611';
}
.ql-editor ul[data-checked=false] > li::before {
content: '\2610';
}
.ql-editor li::before {
display: inline-block;
white-space: nowrap;
width: 1.2em;
}
.ql-editor li:not(.ql-direction-rtl)::before {
margin-left: -1.5em;
margin-right: 0.3em;
text-align: right;
}
.ql-editor li.ql-direction-rtl::before {
margin-left: 0.3em;
margin-right: -1.5em;
}
.ql-editor ol li:not(.ql-direction-rtl),
.ql-editor ul li:not(.ql-direction-rtl) {
padding-left: 1.5em;
}
.ql-editor ol li.ql-direction-rtl,
.ql-editor ul li.ql-direction-rtl {
padding-right: 1.5em;
}
.ql-editor ol li {
counter-reset: list-1 list-2 list-3 list-4 list-5 list-6 list-7 list-8 list-9;
counter-increment: list-0;
}
.ql-editor ol li:before {
content: counter(list-0, decimal) '. ';
}
.ql-editor ol li.ql-indent-1 {
counter-increment: list-1;
}
.ql-editor ol li.ql-indent-1:before {
content: counter(list-1, lower-alpha) '. ';
}
.ql-editor ol li.ql-indent-1 {
counter-reset: list-2 list-3 list-4 list-5 list-6 list-7 list-8 list-9;
}
.ql-editor ol li.ql-indent-2 {
counter-increment: list-2;
}
.ql-editor ol li.ql-indent-2:before {
content: counter(list-2, lower-roman) '. ';
}
.ql-editor ol li.ql-indent-2 {
counter-reset: list-3 list-4 list-5 list-6 list-7 list-8 list-9;
}
.ql-editor ol li.ql-indent-3 {
counter-increment: list-3;
}
.ql-editor ol li.ql-indent-3:before {
content: counter(list-3, decimal) '. ';
}
.ql-editor ol li.ql-indent-3 {
counter-reset: list-4 list-5 list-6 list-7 list-8 list-9;
}
.ql-editor ol li.ql-indent-4 {
counter-increment: list-4;
}
.ql-editor ol li.ql-indent-4:before {
content: counter(list-4, lower-alpha) '. ';
}
.ql-editor ol li.ql-indent-4 {
counter-reset: list-5 list-6 list-7 list-8 list-9;
}
.ql-editor ol li.ql-indent-5 {
counter-increment: list-5;
}
.ql-editor ol li.ql-indent-5:before {
content: counter(list-5, lower-roman) '. ';
}
.ql-editor ol li.ql-indent-5 {
counter-reset: list-6 list-7 list-8 list-9;
}
.ql-editor ol li.ql-indent-6 {
counter-increment: list-6;
}
.ql-editor ol li.ql-indent-6:before {
content: counter(list-6, decimal) '. ';
}
.ql-editor ol li.ql-indent-6 {
counter-reset: list-7 list-8 list-9;
}
.ql-editor ol li.ql-indent-7 {
counter-increment: list-7;
}
.ql-editor ol li.ql-indent-7:before {
content: counter(list-7, lower-alpha) '. ';
}
.ql-editor ol li.ql-indent-7 {
counter-reset: list-8 list-9;
}
.ql-editor ol li.ql-indent-8 {
counter-increment: list-8;
}
.ql-editor ol li.ql-indent-8:before {
content: counter(list-8, lower-roman) '. ';
}
.ql-editor ol li.ql-indent-8 {
counter-reset: list-9;
}
.ql-editor ol li.ql-indent-9 {
counter-increment: list-9;
}
.ql-editor ol li.ql-indent-9:before {
content: counter(list-9, decimal) '. ';
}
.ql-editor .ql-indent-1:not(.ql-direction-rtl) {
padding-left: 3em;
}
.ql-editor li.ql-indent-1:not(.ql-direction-rtl) {
padding-left: 4.5em;
}
.ql-editor .ql-indent-1.ql-direction-rtl.ql-align-right {
padding-right: 3em;
}
.ql-editor li.ql-indent-1.ql-direction-rtl.ql-align-right {
padding-right: 4.5em;
}
.ql-editor .ql-indent-2:not(.ql-direction-rtl) {
padding-left: 6em;
}
.ql-editor li.ql-indent-2:not(.ql-direction-rtl) {
padding-left: 7.5em;
}
.ql-editor .ql-indent-2.ql-direction-rtl.ql-align-right {
padding-right: 6em;
}
.ql-editor li.ql-indent-2.ql-direction-rtl.ql-align-right {
padding-right: 7.5em;
}
.ql-editor .ql-indent-3:not(.ql-direction-rtl) {
padding-left: 9em;
}
.ql-editor li.ql-indent-3:not(.ql-direction-rtl) {
padding-left: 10.5em;
}
.ql-editor .ql-indent-3.ql-direction-rtl.ql-align-right {
padding-right: 9em;
}
.ql-editor li.ql-indent-3.ql-direction-rtl.ql-align-right {
padding-right: 10.5em;
}
.ql-editor .ql-indent-4:not(.ql-direction-rtl) {
padding-left: 12em;
}
.ql-editor li.ql-indent-4:not(.ql-direction-rtl) {
padding-left: 13.5em;
}
.ql-editor .ql-indent-4.ql-direction-rtl.ql-align-right {
padding-right: 12em;
}
.ql-editor li.ql-indent-4.ql-direction-rtl.ql-align-right {
padding-right: 13.5em;
}
.ql-editor .ql-indent-5:not(.ql-direction-rtl) {
padding-left: 15em;
}
.ql-editor li.ql-indent-5:not(.ql-direction-rtl) {
padding-left: 16.5em;
}
.ql-editor .ql-indent-5.ql-direction-rtl.ql-align-right {
padding-right: 15em;
}
.ql-editor li.ql-indent-5.ql-direction-rtl.ql-align-right {
padding-right: 16.5em;
}
.ql-editor .ql-indent-6:not(.ql-direction-rtl) {
padding-left: 18em;
}
.ql-editor li.ql-indent-6:not(.ql-direction-rtl) {
padding-left: 19.5em;
}
.ql-editor .ql-indent-6.ql-direction-rtl.ql-align-right {
padding-right: 18em;
}
.ql-editor li.ql-indent-6.ql-direction-rtl.ql-align-right {
padding-right: 19.5em;
}
.ql-editor .ql-indent-7:not(.ql-direction-rtl) {
padding-left: 21em;
}
.ql-editor li.ql-indent-7:not(.ql-direction-rtl) {
padding-left: 22.5em;
}
.ql-editor .ql-indent-7.ql-direction-rtl.ql-align-right {
padding-right: 21em;
}
.ql-editor li.ql-indent-7.ql-direction-rtl.ql-align-right {
padding-right: 22.5em;
}
.ql-editor .ql-indent-8:not(.ql-direction-rtl) {
padding-left: 24em;
}
.ql-editor li.ql-indent-8:not(.ql-direction-rtl) {
padding-left: 25.5em;
}
.ql-editor .ql-indent-8.ql-direction-rtl.ql-align-right {
padding-right: 24em;
}
.ql-editor li.ql-indent-8.ql-direction-rtl.ql-align-right {
padding-right: 25.5em;
}
.ql-editor .ql-indent-9:not(.ql-direction-rtl) {
padding-left: 27em;
}
.ql-editor li.ql-indent-9:not(.ql-direction-rtl) {
padding-left: 28.5em;
}
.ql-editor .ql-indent-9.ql-direction-rtl.ql-align-right {
padding-right: 27em;
}
.ql-editor li.ql-indent-9.ql-direction-rtl.ql-align-right {
padding-right: 28.5em;
}
.ql-editor .ql-video {
display: block;
max-width: 100%;
}
.ql-editor .ql-video.ql-align-center {
margin: 0 auto;
}
.ql-editor .ql-video.ql-align-right {
margin: 0 0 0 auto;
}
.ql-editor .ql-bg-black {
background-color: #000;
}
.ql-editor .ql-bg-red {
background-color: #e60000;
}
.ql-editor .ql-bg-orange {
background-color: #f90;
}
.ql-editor .ql-bg-yellow {
background-color: #ff0;
}
.ql-editor .ql-bg-green {
background-color: #008a00;
}
.ql-editor .ql-bg-blue {
background-color: #06c;
}
.ql-editor .ql-bg-purple {
background-color: #93f;
}
.ql-editor .ql-color-white {
color: #fff;
}
.ql-editor .ql-color-red {
color: #e60000;
}
.ql-editor .ql-color-orange {
color: #f90;
}
.ql-editor .ql-color-yellow {
color: #ff0;
}
.ql-editor .ql-color-green {
color: #008a00;
}
.ql-editor .ql-color-blue {
color: #06c;
}
.ql-editor .ql-color-purple {
color: #93f;
}
.ql-editor .ql-font-serif {
font-family: Georgia, Times New Roman, serif;
}
.ql-editor .ql-font-monospace {
font-family: Monaco, Courier New, monospace;
}
.ql-editor .ql-size-small {
font-size: 0.75em;
}
.ql-editor .ql-size-large {
font-size: 1.5em;
}
.ql-editor .ql-size-huge {
font-size: 2.5em;
}
.ql-editor .ql-direction-rtl {
direction: rtl;
text-align: inherit;
}
.ql-editor .ql-align-center {
text-align: center;
}
.ql-editor .ql-align-justify {
text-align: justify;
}
.ql-editor .ql-align-right {
text-align: right;
}
.ql-editor.ql-blank::before {
color: rgba(0,0,0,0.6);
content: attr(data-placeholder);
font-style: italic;
left: 15px;
pointer-events: none;
position: absolute;
right: 15px;
}
.ql-snow.ql-toolbar:after,
.ql-snow .ql-toolbar:after {
clear: both;
content: '';
display: table;
}
.ql-snow.ql-toolbar button,
.ql-snow .ql-toolbar button {
background: none;
border: none;
cursor: pointer;
display: inline-block;
float: left;
height: 24px;
padding: 3px 5px;
width: 28px;
}
.ql-snow.ql-toolbar button svg,
.ql-snow .ql-toolbar button svg {
float: left;
height: 100%;
}
.ql-snow.ql-toolbar button:active:hover,
.ql-snow .ql-toolbar button:active:hover {
outline: none;
}
.ql-snow.ql-toolbar input.ql-image[type=file],
.ql-snow .ql-toolbar input.ql-image[type=file] {
display: none;
}
.ql-snow.ql-toolbar button:hover,
.ql-snow .ql-toolbar button:hover,
.ql-snow.ql-toolbar button:focus,
.ql-snow .ql-toolbar button:focus,
.ql-snow.ql-toolbar button.ql-active,
.ql-snow .ql-toolbar button.ql-active,
.ql-snow.ql-toolbar .ql-picker-label:hover,
.ql-snow .ql-toolbar .ql-picker-label:hover,
.ql-snow.ql-toolbar .ql-picker-label.ql-active,
.ql-snow .ql-toolbar .ql-picker-label.ql-active,
.ql-snow.ql-toolbar .ql-picker-item:hover,
.ql-snow .ql-toolbar .ql-picker-item:hover,
.ql-snow.ql-toolbar .ql-picker-item.ql-selected,
.ql-snow .ql-toolbar .ql-picker-item.ql-selected {
color: #06c;
}
.ql-snow.ql-toolbar button:hover .ql-fill,
.ql-snow .ql-toolbar button:hover .ql-fill,
.ql-snow.ql-toolbar button:focus .ql-fill,
.ql-snow .ql-toolbar button:focus .ql-fill,
.ql-snow.ql-toolbar button.ql-active .ql-fill,
.ql-snow .ql-toolbar button.ql-active .ql-fill,
.ql-snow.ql-toolbar .ql-picker-label:hover .ql-fill,
.ql-snow .ql-toolbar .ql-picker-label:hover .ql-fill,
.ql-snow.ql-toolbar .ql-picker-label.ql-active .ql-fill,
.ql-snow .ql-toolbar .ql-picker-label.ql-active .ql-fill,
.ql-snow.ql-toolbar .ql-picker-item:hover .ql-fill,
.ql-snow .ql-toolbar .ql-picker-item:hover .ql-fill,
.ql-snow.ql-toolbar .ql-picker-item.ql-selected .ql-fill,
.ql-snow .ql-toolbar .ql-picker-item.ql-selected .ql-fill,
.ql-snow.ql-toolbar button:hover .ql-stroke.ql-fill,
.ql-snow .ql-toolbar button:hover .ql-stroke.ql-fill,
.ql-snow.ql-toolbar button:focus .ql-stroke.ql-fill,
.ql-snow .ql-toolbar button:focus .ql-stroke.ql-fill,
.ql-snow.ql-toolbar button.ql-active .ql-stroke.ql-fill,
.ql-snow .ql-toolbar button.ql-active .ql-stroke.ql-fill,
.ql-snow.ql-toolbar .ql-picker-label:hover .ql-stroke.ql-fill,
.ql-snow .ql-toolbar .ql-picker-label:hover .ql-stroke.ql-fill,
.ql-snow.ql-toolbar .ql-picker-label.ql-active .ql-stroke.ql-fill,
.ql-snow .ql-toolbar .ql-picker-label.ql-active .ql-stroke.ql-fill,
.ql-snow.ql-toolbar .ql-picker-item:hover .ql-stroke.ql-fill,
.ql-snow .ql-toolbar .ql-picker-item:hover .ql-stroke.ql-fill,
.ql-snow.ql-toolbar .ql-picker-item.ql-selected .ql-stroke.ql-fill,
.ql-snow .ql-toolbar .ql-picker-item.ql-selected .ql-stroke.ql-fill {
fill: #06c;
}
.ql-snow.ql-toolbar button:hover .ql-stroke,
.ql-snow .ql-toolbar button:hover .ql-stroke,
.ql-snow.ql-toolbar button:focus .ql-stroke,
.ql-snow .ql-toolbar button:focus .ql-stroke,
.ql-snow.ql-toolbar button.ql-active .ql-stroke,
.ql-snow .ql-toolbar button.ql-active .ql-stroke,
.ql-snow.ql-toolbar .ql-picker-label:hover .ql-stroke,
.ql-snow .ql-toolbar .ql-picker-label:hover .ql-stroke,
.ql-snow.ql-toolbar .ql-picker-label.ql-active .ql-stroke,
.ql-snow .ql-toolbar .ql-picker-label.ql-active .ql-stroke,
.ql-snow.ql-toolbar .ql-picker-item:hover .ql-stroke,
.ql-snow .ql-toolbar .ql-picker-item:hover .ql-stroke,
.ql-snow.ql-toolbar .ql-picker-item.ql-selected .ql-stroke,
.ql-snow .ql-toolbar .ql-picker-item.ql-selected .ql-stroke,
.ql-snow.ql-toolbar button:hover .ql-stroke-miter,
.ql-snow .ql-toolbar button:hover .ql-stroke-miter,
.ql-snow.ql-toolbar button:focus .ql-stroke-miter,
.ql-snow .ql-toolbar button:focus .ql-stroke-miter,
.ql-snow.ql-toolbar button.ql-active .ql-stroke-miter,
.ql-snow .ql-toolbar button.ql-active .ql-stroke-miter,
.ql-snow.ql-toolbar .ql-picker-label:hover .ql-stroke-miter,
.ql-snow .ql-toolbar .ql-picker-label:hover .ql-stroke-miter,
.ql-snow.ql-toolbar .ql-picker-label.ql-active .ql-stroke-miter,
.ql-snow .ql-toolbar .ql-picker-label.ql-active .ql-stroke-miter,
.ql-snow.ql-toolbar .ql-picker-item:hover .ql-stroke-miter,
.ql-snow .ql-toolbar .ql-picker-item:hover .ql-stroke-miter,
.ql-snow.ql-toolbar .ql-picker-item.ql-selected .ql-stroke-miter,
.ql-snow .ql-toolbar .ql-picker-item.ql-selected .ql-stroke-miter {
stroke: #06c;
}
@media (pointer: coarse) {
.ql-snow.ql-toolbar button:hover:not(.ql-active),
.ql-snow .ql-toolbar button:hover:not(.ql-active) {
color: #444;
}
.ql-snow.ql-toolbar button:hover:not(.ql-active) .ql-fill,
.ql-snow .ql-toolbar button:hover:not(.ql-active) .ql-fill,
.ql-snow.ql-toolbar button:hover:not(.ql-active) .ql-stroke.ql-fill,
.ql-snow .ql-toolbar button:hover:not(.ql-active) .ql-stroke.ql-fill {
fill: #444;
}
.ql-snow.ql-toolbar button:hover:not(.ql-active) .ql-stroke,
.ql-snow .ql-toolbar button:hover:not(.ql-active) .ql-stroke,
.ql-snow.ql-toolbar button:hover:not(.ql-active) .ql-stroke-miter,
.ql-snow .ql-toolbar button:hover:not(.ql-active) .ql-stroke-miter {
stroke: #444;
}
}
.ql-snow {
box-sizing: border-box;
}
.ql-snow * {
box-sizing: border-box;
}
.ql-snow .ql-hidden {
display: none;
}
.ql-snow .ql-out-bottom,
.ql-snow .ql-out-top {
visibility: hidden;
}
.ql-snow .ql-tooltip {
position: absolute;
transform: translateY(10px);
}
.ql-snow .ql-tooltip a {
cursor: pointer;
text-decoration: none;
}
.ql-snow .ql-tooltip.ql-flip {
transform: translateY(-10px);
}
.ql-snow .ql-formats {
display: inline-block;
vertical-align: middle;
}
.ql-snow .ql-formats:after {
clear: both;
content: '';
display: table;
}
.ql-snow .ql-stroke {
fill: none;
stroke: #444;
stroke-linecap: round;
stroke-linejoin: round;
stroke-width: 2;
}
.ql-snow .ql-stroke-miter {
fill: none;
stroke: #444;
stroke-miterlimit: 10;
stroke-width: 2;
}
.ql-snow .ql-fill,
.ql-snow .ql-stroke.ql-fill {
fill: #444;
}
.ql-snow .ql-empty {
fill: none;
}
.ql-snow .ql-even {
fill-rule: evenodd;
}
.ql-snow .ql-thin,
.ql-snow .ql-stroke.ql-thin {
stroke-width: 1;
}
.ql-snow .ql-transparent {
opacity: 0.4;
}
.ql-snow .ql-direction svg:last-child {
display: none;
}
.ql-snow .ql-direction.ql-active svg:last-child {
display: inline;
}
.ql-snow .ql-direction.ql-active svg:first-child {
display: none;
}
.ql-snow .ql-editor h1 {
font-size: 2em;
}
.ql-snow .ql-editor h2 {
font-size: 1.5em;
}
.ql-snow .ql-editor h3 {
font-size: 1.17em;
}
.ql-snow .ql-editor h4 {
font-size: 1em;
}
.ql-snow .ql-editor h5 {
font-size: 0.83em;
}
.ql-snow .ql-editor h6 {
font-size: 0.67em;
}
.ql-snow .ql-editor a {
text-decoration: underline;
}
.ql-snow .ql-editor blockquote {
border-left: 4px solid #ccc;
margin-bottom: 5px;
margin-top: 5px;
padding-left: 16px;
}
.ql-snow .ql-editor code,
.ql-snow .ql-editor pre {
background-color: #f0f0f0;
border-radius: 3px;
}
.ql-snow .ql-editor pre {
white-space: pre-wrap;
margin-bottom: 5px;
margin-top: 5px;
padding: 5px 10px;
}
.ql-snow .ql-editor code {
font-size: 85%;
padding: 2px 4px;
}
.ql-snow .ql-editor pre.ql-syntax {
background-color: #23241f;
color: #f8f8f2;
overflow: visible;
}
.ql-snow .ql-editor img {
max-width: 100%;
}
.ql-snow .ql-picker {
color: #444;
display: inline-block;
float: left;
font-size: 14px;
font-weight: 500;
height: 24px;
position: relative;
vertical-align: middle;
}
.ql-snow .ql-picker-label {
cursor: pointer;
display: inline-block;
height: 100%;
padding-left: 8px;
padding-right: 2px;
position: relative;
width: 100%;
}
.ql-snow .ql-picker-label::before {
display: inline-block;
line-height: 22px;
}
.ql-snow .ql-picker-options {
background-color: #fff;
display: none;
min-width: 100%;
padding: 4px 8px;
position: absolute;
white-space: nowrap;
}
.ql-snow .ql-picker-options .ql-picker-item {
cursor: pointer;
display: block;
padding-bottom: 5px;
padding-top: 5px;
}
.ql-snow .ql-picker.ql-expanded .ql-picker-label {
color: #ccc;
z-index: 2;
}
.ql-snow .ql-picker.ql-expanded .ql-picker-label .ql-fill {
fill: #ccc;
}
.ql-snow .ql-picker.ql-expanded .ql-picker-label .ql-stroke {
stroke: #ccc;
}
.ql-snow .ql-picker.ql-expanded .ql-picker-options {
display: block;
margin-top: -1px;
top: 100%;
z-index: 1;
}
.ql-snow .ql-color-picker,
.ql-snow .ql-icon-picker {
width: 28px;
}
.ql-snow .ql-color-picker .ql-picker-label,
.ql-snow .ql-icon-picker .ql-picker-label {
padding: 2px 4px;
}
.ql-snow .ql-color-picker .ql-picker-label svg,
.ql-snow .ql-icon-picker .ql-picker-label svg {
right: 4px;
}
.ql-snow .ql-icon-picker .ql-picker-options {
padding: 4px 0px;
}
.ql-snow .ql-icon-picker .ql-picker-item {
height: 24px;
width: 24px;
padding: 2px 4px;
}
.ql-snow .ql-color-picker .ql-picker-options {
padding: 3px 5px;
width: 152px;
}
.ql-snow .ql-color-picker .ql-picker-item {
border: 1px solid transparent;
float: left;
height: 16px;
margin: 2px;
padding: 0px;
width: 16px;
}
.ql-snow .ql-picker:not(.ql-color-picker):not(.ql-icon-picker) svg {
position: absolute;
margin-top: -9px;
right: 0;
top: 50%;
width: 18px;
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-label]:not([data-label=''])::before,
.ql-snow .ql-picker.ql-font .ql-picker-label[data-label]:not([data-label=''])::before,
.ql-snow .ql-picker.ql-size .ql-picker-label[data-label]:not([data-label=''])::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-label]:not([data-label=''])::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-label]:not([data-label=''])::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-label]:not([data-label=''])::before {
content: attr(data-label);
}
.ql-snow .ql-picker.ql-header {
width: 98px;
}
.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
content: 'Normal';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
content: 'Heading 1';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
content: 'Heading 2';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
content: 'Heading 3';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
content: 'Heading 4';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
content: 'Heading 5';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
content: 'Heading 6';
}
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
font-size: 2em;
}
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
font-size: 1.5em;
}
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
font-size: 1.17em;
}
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
font-size: 1em;
}
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
font-size: 0.83em;
}
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
font-size: 0.67em;
}
.ql-snow .ql-picker.ql-font {
width: 108px;
}
.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
content: 'Sans Serif';
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value=serif]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value=serif]::before {
content: 'Serif';
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value=monospace]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value=monospace]::before {
content: 'Monospace';
}
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value=serif]::before {
font-family: Georgia, Times New Roman, serif;
}
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value=monospace]::before {
font-family: Monaco, Courier New, monospace;
}
.ql-snow .ql-picker.ql-size {
width: 98px;
}
.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
content: 'Normal';
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value=small]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value=small]::before {
content: 'Small';
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value=large]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value=large]::before {
content: 'Large';
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value=huge]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value=huge]::before {
content: 'Huge';
}
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value=small]::before {
font-size: 10px;
}
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value=large]::before {
font-size: 18px;
}
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value=huge]::before {
font-size: 32px;
}
.ql-snow .ql-color-picker.ql-background .ql-picker-item {
background-color: #fff;
}
.ql-snow .ql-color-picker.ql-color .ql-picker-item {
background-color: #000;
}
.ql-toolbar.ql-snow {
border: 1px solid #ccc;
box-sizing: border-box;
font-family: 'Helvetica Neue', 'Helvetica', 'Arial', sans-serif;
padding: 8px;
}
.ql-toolbar.ql-snow .ql-formats {
margin-right: 15px;
}
.ql-toolbar.ql-snow .ql-picker-label {
border: 1px solid transparent;
}
.ql-toolbar.ql-snow .ql-picker-options {
border: 1px solid transparent;
box-shadow: rgba(0,0,0,0.2) 0 2px 8px;
}
.ql-toolbar.ql-snow .ql-picker.ql-expanded .ql-picker-label {
border-color: #ccc;
}
.ql-toolbar.ql-snow .ql-picker.ql-expanded .ql-picker-options {
border-color: #ccc;
}
.ql-toolbar.ql-snow .ql-color-picker .ql-picker-item.ql-selected,
.ql-toolbar.ql-snow .ql-color-picker .ql-picker-item:hover {
border-color: #000;
}
.ql-toolbar.ql-snow + .ql-container.ql-snow {
border-top: 0px;
}
.ql-snow .ql-tooltip {
background-color: #fff;
border: 1px solid #ccc;
box-shadow: 0px 0px 5px #ddd;
color: #444;
padding: 5px 12px;
white-space: nowrap;
}
.ql-snow .ql-tooltip::before {
content: "Visit URL:";
line-height: 26px;
margin-right: 8px;
}
.ql-snow .ql-tooltip input[type=text] {
display: none;
border: 1px solid #ccc;
font-size: 13px;
height: 26px;
margin: 0px;
padding: 3px 5px;
width: 170px;
}
.ql-snow .ql-tooltip a.ql-preview {
display: inline-block;
max-width: 200px;
overflow-x: hidden;
text-overflow: ellipsis;
vertical-align: top;
}
.ql-snow .ql-tooltip a.ql-action::after {
border-right: 1px solid #ccc;
content: 'Edit';
margin-left: 16px;
padding-right: 8px;
}
.ql-snow .ql-tooltip a.ql-remove::before {
content: 'Remove';
margin-left: 8px;
}
.ql-snow .ql-tooltip a {
line-height: 26px;
}
.ql-snow .ql-tooltip.ql-editing a.ql-preview,
.ql-snow .ql-tooltip.ql-editing a.ql-remove {
display: none;
}
.ql-snow .ql-tooltip.ql-editing input[type=text] {
display: inline-block;
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
border-right: 0px;
content: 'Save';
padding-right: 0px;
}
.ql-snow .ql-tooltip[data-mode=link]::before {
content: "Enter link:";
}
.ql-snow .ql-tooltip[data-mode=formula]::before {
content: "Enter formula:";
}
.ql-snow .ql-tooltip[data-mode=video]::before {
content: "Enter video:";
}
.ql-snow a {
color: #06c;
}
.ql-container.ql-snow {
border: 1px solid #ccc;
}
`;
- See this output...:
When running through Chrome debugger, the output value of RTFStyles is null. Using the HTML inspect in the shadow dom of the component that uses this reference prints an empty section
Live Reproduction Link
https://stackblitz.com/edit/lit-html-nttcbe?file=src%2Frtfstyles.js
Expected Results
On my machine the doc comes out fine and can type in the document and bold/ italicize, the javascript doesn't yet fully work (I am investigating). Key for this issue is the CSS does not print at all, buttons aren't styles. If you happen to notice why the javascript doesn't work though would be a nice side benefit.
Actual Results
on my machine, buttons are not styled, css styles are parsed as null though validator suggests correct (CSS pull from quill/dist folder
Browsers Affected
- [ X] Chrome (only tested on Chrome)
- [ ] Firefox
- [ ] Edge
- [ ] Safari 11
- [ ] Safari 10
- [ ] IE 11
suared
All 7 comments
You need to double escape the backslashes in the content rules. Itās an ES string, so those backslashes currently begin ES string escapes ā invalid ones ā instead of CSS string escapes.
.ql-editor ul > li::before {
content: '\\2022';
}
.ql-editor ul[data-checked=true] > li::before {
content: '\\2611';
}
.ql-editor ul[data-checked=false] > li::before {
content: '\\2610';
}
Alternatively you could use the literal chars and forget escaping:
.ql-editor ul > li::before {
content: 'ā¢';
}
.ql-editor ul[data-checked=true] > li::before {
content: 'ā';
}
.ql-editor ul[data-checked=false] > li::before {
content: 'ā';
}
Because the ES āescapesā are invalid, the ES template object produced has undefined in place of what would have been the ācookedā strings ā the string values with ordinary escaping rules āresolvedā. It only has the ārawā strings, and most template tags, including Litās, do not consume the raw strings.
Arguably the css tag might be better if it used the template raw values instead of the cooked values. That would allow you to avoid double escaping. However it would be a significant breaking API change and Iām not sure everybody would agree itās better.
While this isnāt a Lit bug, it probably would be nice if Lit threw an error when any of the cooked template values are undefined since I think a lot of people would not be sure what to look for here. Trudging on with undefined as if it were a string might also be a hazard from a trusted types POV; template arrays can contain a mix of undefined (uncookable) and regular cooked segments.
bathos
on 19 Feb 2020
👍1
What do you suggest in this case, should it be kept as a bug to track the creation of an error that will notify developers so hey can fix themselves ? or do you convert this or close this one and spawn a ticket to track the error message separately? For my current issue the explanation made it easy/ quick to fix and I would consider my original issue solved and will defer to you on the right process so the potential change to enable developers to self-serve more easily is not lost. Thanks for the quick reply!
suared
on 19 Feb 2020
It's not particular to lit. If you try to format https://cdn.quilljs.com/1.3.6/quill.snow.css with prettier, Atom IDE crashes. These css entities may not have been standardized enough. So while browsers may support rendering them, engines/utilities that encounter them do not have enough support for them. It may be an issue farther upstream.
https://polymer.slack.com/archives/C03PF4L4L/p1573343826200400
anoblet
on 19 Feb 2020
It's not particular to lit.
Thatās very true.
These css entities may not have been standardized enough.
Itās got nothing to do with the CSS. Itās just the fact that the above string has no valid cooked template value because it needs double escaping. When \2022 appears, thatās an illegal octal escape sequence in the _ES string_. It must be \\2022, or else the resulting TV in the template array is undefined. The above stylesheetās source text ends up being the string "undefined".
If you remove the Lit tag, you would get a syntax error because only tagged templates are allowed to have no valid cooked value, or _TV_. The potential Lit issue here would be an enhancement to throw a useful error when the template has a missing TV.
bathos
on 19 Feb 2020
👍1
Arguably the css tag might be better if it used the template raw values instead of the cooked values. That would allow you to avoid double escaping. However it would be a significant breaking API change and Iām not sure everybody would agree itās better.
We used raw strings for a moment before Polymer 3.0 was release and we got feedback that users didn't expect that standard JS string escapes (like \n or \t or \u{1F600} (š)) didn't work. The string is in JS even if it contained CSS. So we switched to cooked strings in Polymer and followed that with lit-html and LitElement.
Also, using raw strings may cause bloat when compiled to ES5. Some compilers like Closure are smart enough to not generate the raw strings unless there's an access to them. I'm not sure if they have the same optimization for the default cooked strings. This obviously isn't an issue if you target ES2015+.
justinfagnani
on 20 Feb 2020
👍1
Good to know the history @justinfagnani. Those conclusions make sense to me too.
What do you suggest in this case, should it be kept as a bug to track the creation of an error that will notify developers so hey can fix themselves ?
@suared afraid Iām just a fellow lit user who happened to recognize what was happening in the code your shared, not a maintainer/contributer, so Iām not sure what the norms are here for that sort of stuff
bathos
on 20 Feb 2020
Detecting illegal encodings can and is detected by the eslint-plugin-lit plugin, added in https://github.com/43081j/eslint-plugin-lit/issues/44. As such I'm going to go ahead and close this issue here since there are no lit-html code changes we plan on making, but we encourage users to use https://github.com/43081j/eslint-plugin-lit.
kevinpschaaf
on 20 Feb 2020
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