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feat(proposal): use where selector to manage class specificity #44

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feat(proposal): use where selector to manage class specificity #44

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118 changes: 84 additions & 34 deletions styles/forms/mod.css
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Original file line number Diff line number Diff line change
Expand Up @@ -7,11 +7,16 @@ form {
background: var(--bg-muted);
}

:is(form, label):last-child {
/* Specificity 0,1,1 to 0,0,0 */
:where(form:last-child, label:last-child) {
margin-bottom: 0;
}

form code {
/* Specificity 0,0,2 to 0,0,1
It refers to a inner children, if the specificity is reduced
further it may collide with CSS resets
*/
form :where(code) {
background: var(--bg-subtle);
}

Expand All @@ -35,33 +40,52 @@ label {
margin: 0 0 1rem;
}

label > small {
/* Specificity 0,0,2 to 0,0,1
It refers to a inner children, if the specificity is reduced
further it may collide with CSS resets
*/
label > :where(small) {
color: var(--muted);
}

label > small:first-child::after,
label > small:first-child::before {
/* Specificity 0,1,3 to 0,0,2
Since :where does't support `::before` and `::after`, it
couldn't be reduced further
*/
label > :where(small:first-child)::after,
label > :where(small:first-child)::before {
content: "\A";
white-space: pre;
}

label:has(> :is(input, textarea, button)) {
/* Specificity 0,0,2 to 0,0,1 */
label:has(> :where(input, textarea, button)) {
cursor: pointer;
}

label:has(> :is(input, textarea, select, button):disabled) {
/* Specificity 0,1,2 to 0,1,1
IMHO pseudoclasses must preserve higher specificity
*/
label:has(> :where(input, textarea, select, button):disabled) {
color: var(--muted);
cursor: not-allowed;
}

label:has(> :is(input, textarea, select):required)::before {
/* Specificity 0,1,3 to 0,1,2
IMHO pseudoclasses must preserve higher specificity
*/
label:has(> :where(input, textarea, select):required)::before {
position: absolute;
left: -.6rem;
color: var(--danger);
content: "*";
}

label:has(> textarea) {
/* Specificity 0,0,2 to 0,0,1
It refers to a inner children, if the specificity is reduced
further it may collide with CSS resets
*/
label:has(> :where(textarea)) {
display: block;
}

Expand Down Expand Up @@ -94,11 +118,13 @@ textarea {
resize: none;
}

:is(textarea, select):hover {
/* Specificity 0,1,1 to 0,1,0 */
:where(textarea, select):hover {
border-color: var(--accent);
}

:is(input, textarea, select):disabled {
/* Specificity 0,1,1 to 0,1,0 */
:where(input, textarea, select):disabled {
background-color: var(--bg-muted);
cursor: not-allowed;
}
Expand All @@ -115,44 +141,52 @@ input {
appearance: none;
}

input:not(:disabled):hover {
/* Specificity 0,2,1 to 0,1,0 */
:where(input:not(:disabled)):hover {
border-color: var(--accent);
}

input:not([type="radio"],[type="checkbox"]) {
/* Specificity 0,1,1 to 0,0,1 */
input:where(:not([type="radio"],[type="checkbox"])) {
position: relative;
min-height: 1.5rem;
padding: .25rem .5rem;
}

input:is([type="radio"],[type="checkbox"]), input[type="checkbox"]::before {
/* Specificity 0,1,1 to 0,0,1 */
input:where([type="radio"],[type="checkbox"]), input:where([type="checkbox"])::before {
display: inline-block;
width: 1rem;
height: 1rem;
margin: 0 .25rem;
vertical-align: middle;
}

input[type="checkbox"] {
/* Specificity 0,1,1 to 0,0,1 */
input:where([type="checkbox"]) {
border-radius: 0;
}

input[type="radio"] {
/* Specificity 0,1,1 to 0,0,1 */
input:where([type="radio"]) {
border-width: 2px;
border-radius: 50%;
}

input[type="radio"]:checked {
/* Specificity 0,2,1 to 0,1,1 */
input:where([type="radio"]):checked {
border-width: .25rem;
border-color: var(--accent);
}

input[type="checkbox"]:checked {
/* Specificity 0,2,1 to 0,1,1 */
input:where([type="checkbox"]):checked {
border-color: var(--accent);
background: var(--accent);
}

input[type="checkbox"]:checked::before {
/* Specificity 0,2,2 to 0,1,2 */
input:where([type="checkbox"]):checked::before {
position: absolute;
margin: 0;
background: var(--light);
Expand All @@ -161,15 +195,18 @@ input[type="checkbox"]:checked::before {
mask-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTIiIGhlaWdodD0iOSIgdmlld0JveD0iMCAwIDEyIDkiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+CjxwYXRoIGZpbGwtcnVsZT0iZXZlbm9kZCIgY2xpcC1ydWxlPSJldmVub2RkIiBkPSJNMTEuNzgwMyAwLjIxOTYyNUMxMS45MjEgMC4zNjA0MjcgMTIgMC41NTEzMDUgMTIgMC43NTAzMTNDMTIgMC45NDkzMjEgMTEuOTIxIDEuMTQwMTkgMTEuNzgwMyAxLjI4MUw0LjUxODYgOC41NDA0MkM0LjM3Nzc1IDguNjgxIDQuMTg2ODIgOC43NiAzLjk4Nzc0IDguNzZDMy43ODg2NyA4Ljc2IDMuNTk3NzMgOC42ODEgMy40NTY4OSA4LjU0MDQyTDAuMjAxNjIyIDUuMjg2MkMwLjA2ODkyNzcgNS4xNDM4MyAtMC4wMDMzMDkwNSA0Ljk1NTU1IDAuMDAwMTE2NDkzIDQuNzYwOThDMC4wMDM1NTIwNSA0LjU2NjQzIDAuMDgyMzg5NCA0LjM4MDgxIDAuMjIwMDMyIDQuMjQzMjFDMC4zNTc2NjUgNC4xMDU2MiAwLjU0MzM1NSA0LjAyNjgxIDAuNzM3OTcgNC4wMjMzOEMwLjkzMjU4NCA0LjAxOTk0IDEuMTIwOTMgNC4wOTIxNyAxLjI2MzM0IDQuMjI0ODJMMy45ODc3NCA2Ljk0ODM1TDEwLjcxODYgMC4yMTk2MjVDMTAuODU5NSAwLjA3ODk5MjMgMTEuMDUwNCAwIDExLjI0OTUgMEMxMS40NDg1IDAgMTEuNjM5NSAwLjA3ODk5MjMgMTEuNzgwMyAwLjIxOTYyNVoiIGZpbGw9IndoaXRlIi8+Cjwvc3ZnPgo=");
}

input:is([type="radio"],[type="checkbox"]):disabled {
/* Specificity 0,2,1 to 0,1,1 */
input:where([type="radio"],[type="checkbox"]):disabled {
background-color: var(--bd-muted);
}

input[type="checkbox"]:disabled {
/* Specificity 0,2,1 to 0,1,1 */
input:where([type="checkbox"]):disabled {
border-color: transparent;
}

input[type="range"] {
/* Specificity 0,1,1 to 0,0,1 */
input:where([type="range"]) {
height: .5rem;
border: transparent;
margin: .75rem 0;
Expand All @@ -178,21 +215,26 @@ input[type="range"] {
background: var(--bg-subtle);
}

input[type="file"]::file-selector-button {
/* Specificity 0,1,2 to 0,0,2 */
input:where([type="file"])::file-selector-button {
border: 1px solid var(--bd-muted);
border-radius: var(--bd-radius);
background: transparent;
color: var(--accent);
font: inherit;
}

input[type="file"]:hover::file-selector-button {
/* Specificity 0,2,2 to 0,1,2
IMHO pseudoclasses must preserve higher specificity
*/
input:where([type="file"]):hover::file-selector-button {
background: var(--accent);
color: var(--light);
}

/* Buttons */
button, input:is([type="submit"],[type="reset"],[type="button"],[type="image"]) {
/* Specificity 0,1,1 to 0,0,1 */
button, input:where([type="submit"],[type="reset"],[type="button"],[type="image"]) {
display: inline-block;
padding: .25rem .75rem;
margin: .25rem .125rem;
Expand All @@ -202,36 +244,44 @@ button, input:is([type="submit"],[type="reset"],[type="button"],[type="image"])
transition: background var(--tr-duration), color var(--tr-duration), filter var(--tr-duration);
}

input:is([type="image"],[type="file"],[type="color"]) {
/* Specificity 0,1,1 to 0,0,1 */
input:where([type="image"],[type="file"],[type="color"]) {
padding: .25rem;
}

:is(button, input:is([type="submit"],[type="reset"],[type="button"],[type="image"])):disabled {
/* Specificity 0,2,1 to 0,1,1 */
:is(button, input:where([type="submit"],[type="reset"],[type="button"],[type="image"])):disabled {
cursor: not-allowed;
opacity: .5;
}

:is(button, input)[type="reset"] {
/* Specificity 0,1,1 to 0,0,1 */
:is(button, input):where([type="reset"]) {
color: var(--danger);
}

:is(button, input:is([type="submit"],[type="reset"],[type="button"],[type="image"])):not(:disabled):active {
/* Specificity 0,3,1 to 0,1,0 */
:where(button:not(:disabled)):active,
:where(input:is([type="submit"],[type="reset"],[type="button"],[type="image"]):not(:disabled)):active {
filter: brightness(80%);
}

button[type]:not([type="button"]), input:is([type="submit"],[type="reset"]) {
/* Specificity 0,2,1 to 0,1,0 */
:where(button[type]):not([type="button"]),
input:where([type="submit"],[type="reset"]) {
border-color: currentColor;
}

:is(button, input:is([type="submit"],[type="reset"],[type="button"],[type="image"])):not(:disabled):hover,
:is(button, input:is([type="submit"],[type="reset"],[type="button"],[type="image"])):not(:disabled):active {
/* Specificity 0,3,1 to 0,1,0 */
:where(:is(button, input:is([type="submit"],[type="reset"],[type="button"],[type="image"])):not(:disabled)):hover,
:where(:is(button, input:is([type="submit"],[type="reset"],[type="button"],[type="image"])):not(:disabled)):active {
border-color: transparent;
background: var(--accent);
color: var(--light);
}

:is(button, input)[type="reset"]:not(:disabled):hover,
:is(button, input)[type="reset"]:not(:disabled):active {
/* Specificity 0,3,1 to 0,1,0 */
:where(button, input)[type="reset"]:where(:not(:disabled):active, :not(:disabled):hover) {
border-color: transparent;
background: var(--danger);
color: var(--light);
Expand Down