rustdoc: simplify settings popover DOM

* Changes the class names so that they all start with `setting-`.
  That should make it harder to accidentally use a setting class outside
  the settings popover, where loading the CSS might accidentally change
  the styles of something unrelated.
* Get rid of an unnecessary wrapper DIV around the radio button line.
* Simplify CSS selectors by making the DOM easier and more intuitive
  to target.

Author: notriddle

src/librustdoc/html/static/css/settings.css

@@ -3,8 +3,7 @@
 	position: relative;
 }
 
-.setting-line .radio-line input,
-.setting-line .settings-toggle input {
+.setting-radio input, .setting-check input {
 	margin-right: 0.3em;
 	height: 1.2rem;
 	width: 1.2rem;
@@ -14,21 +13,20 @@
 	-webkit-appearance: none;
 	cursor: pointer;
 }
-.setting-line .radio-line input {
+.setting-radio input {
 	border-radius: 50%;
 }
-.setting-line .settings-toggle input:checked {
+.setting-check input:checked {
 	content: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40">\
 		<path d="M7,25L17,32L33,12" fill="none" stroke="black" stroke-width="5"/>\
 		<path d="M7,23L17,30L33,10" fill="none" stroke="white" stroke-width="5"/></svg>');
 }
 
-.setting-line .radio-line input + span,
-.setting-line .settings-toggle span {
+.setting-radio span, .setting-check span {
 	padding-bottom: 1px;
 }
 
-.radio-line .choice {
+.setting-radio {
 	margin-top: 0.1em;
 	margin-bottom: 0.1em;
 	min-width: 3.8em;
@@ -37,11 +35,11 @@
 	align-items: center;
 	cursor: pointer;
 }
-.radio-line .choice + .choice {
+.setting-radio + .setting-radio {
 	margin-left: 0.5em;
 }
 
-.settings-toggle {
+.setting-check {
 	position: relative;
 	width: 100%;
 	margin-right: 20px;
@@ -50,23 +48,21 @@
 	cursor: pointer;
 }
 
-.setting-line .radio-line input:checked {
+.setting-radio input:checked {
 	box-shadow: inset 0 0 0 3px var(--main-background-color);
 	background-color: var(--settings-input-color);
 }
-.setting-line .settings-toggle input:checked {
+.setting-check input:checked {
 	background-color: var(--settings-input-color);
 }
-.setting-line .radio-line input:focus,
-.setting-line .settings-toggle input:focus {
+.setting-radio input:focus, .setting-check input:focus {
 	box-shadow: 0 0 1px 1px var(--settings-input-color);
 }
 /* In here we combine both `:focus` and `:checked` properties. */
-.setting-line .radio-line input:checked:focus {
+.setting-radio input:checked:focus {
 	box-shadow: inset 0 0 0 3px var(--main-background-color),
 		0 0 2px 2px var(--settings-input-color);
 }
-.setting-line .radio-line input:hover,
-.setting-line .settings-toggle input:hover {
+.setting-radio input:hover, .setting-check input:hover {
 	border-color: var(--settings-input-color) !important;
 }

src/librustdoc/html/static/js/settings.js

@@ -48,13 +48,13 @@
     }
 
     function showLightAndDark() {
-        removeClass(document.getElementById("preferred-light-theme").parentElement, "hidden");
-        removeClass(document.getElementById("preferred-dark-theme").parentElement, "hidden");
+        removeClass(document.getElementById("preferred-light-theme"), "hidden");
+        removeClass(document.getElementById("preferred-dark-theme"), "hidden");
     }
 
     function hideLightAndDark() {
-        addClass(document.getElementById("preferred-light-theme").parentElement, "hidden");
-        addClass(document.getElementById("preferred-dark-theme").parentElement, "hidden");
+        addClass(document.getElementById("preferred-light-theme"), "hidden");
+        addClass(document.getElementById("preferred-dark-theme"), "hidden");
     }
 
     function updateLightAndDark() {
@@ -127,38 +127,40 @@
         let output = "";
 
         for (const setting of settings) {
-            output += "<div class=\"setting-line\">";
             const js_data_name = setting["js_name"];
             const setting_name = setting["name"];
 
             if (setting["options"] !== undefined) {
                 // This is a select setting.
                 output += `\
-<div class="radio-line" id="${js_data_name}">
-    <div class="setting-name">${setting_name}</div>
-<div class="choices">`;
+<div class="setting-line" id="${js_data_name}">
+    <div class="setting-radio-name">${setting_name}</div>
+    <div class="setting-radio-choices">`;
                 onEach(setting["options"], option => {
                     const checked = option === setting["default"] ? " checked" : "";
                     const full = `${js_data_name}-${option.replace(/ /g,"-")}`;
 
                     output += `\
-<label for="${full}" class="choice">
-    <input type="radio" name="${js_data_name}"
-        id="${full}" value="${option}"${checked}>
-    <span>${option}</span>
-</label>`;
+        <label for="${full}" class="setting-radio">
+            <input type="radio" name="${js_data_name}"
+                id="${full}" value="${option}"${checked}>
+            <span>${option}</span>
+        </label>`;
                 });
-                output += "</div></div>";
+                output += `\
+    </div>
+</div>`;
             } else {
                 // This is a checkbox toggle.
                 const checked = setting["default"] === true ? " checked" : "";
                 output += `\
-<label class="settings-toggle">\
-    <input type="checkbox" id="${js_data_name}"${checked}>\
-    <span class="label">${setting_name}</span>\
-</label>`;
+<div class="setting-line">\
+    <label class="setting-check">\
+        <input type="checkbox" id="${js_data_name}"${checked}>\
+        <span>${setting_name}</span>\
+    </label>\
+</div>`;
             }
-            output += "</div>";
         }
         return output;
     }

tests/rustdoc-gui/mobile.goml

@@ -28,7 +28,7 @@ goto: "file://" + |DOC_PATH| + "/settings.html"
 size: (400, 600)
 // Ignored for now https://github.com/rust-lang/rust/issues/93784.
 // compare-elements-position-near-false: (
-//     "#preferred-light-theme .setting-name",
-//     "#preferred-light-theme .choice",
+//     "#preferred-light-theme .setting-radio-name",
+//     "#preferred-light-theme .setting-radio",
 //     {"y": 16},
 // )

tests/rustdoc-gui/settings.goml

@@ -43,12 +43,12 @@ wait-for: "#settings"
 // We check that the "Use system theme" is disabled.
 assert-property: ("#theme-system-preference", {"checked": "false"})
 // Meaning that only the "theme" menu is showing up.
-assert: ".setting-line:not(.hidden) #theme"
-assert: ".setting-line.hidden #preferred-dark-theme"
-assert: ".setting-line.hidden #preferred-light-theme"
+assert: "#theme.setting-line:not(.hidden)"
+assert: "#preferred-dark-theme.setting-line.hidden"
+assert: "#preferred-light-theme.setting-line.hidden"
 
 // We check that the correct theme is selected.
-assert-property: ("#theme .choices #theme-dark", {"checked": "true"})
+assert-property: ("#theme .setting-radio-choices #theme-dark", {"checked": "true"})
 
 // Some style checks...
 move-cursor-to: "#settings-menu > a"
@@ -109,31 +109,31 @@ assert-css: (
         "box-shadow": "rgb(33, 150, 243) 0px 0px 1px 1px",
     },
 )
-// Now we check the setting-name for radio buttons is on a different line than the label.
+// Now we check the setting-radio-name is on a different line than the label.
 compare-elements-position-near: (
-    "#theme .setting-name",
-    "#theme .choices",
+    "#theme .setting-radio-name",
+    "#theme .setting-radio-choices",
     {"x": 1}
 )
 compare-elements-position-near-false: (
-    "#theme .setting-name",
-    "#theme .choices",
+    "#theme .setting-radio-name",
+    "#theme .setting-radio-choices",
     {"y": 1}
 )
 // Now we check that the label positions are all on the same line.
 compare-elements-position-near: (
-    "#theme .choices #theme-light",
-    "#theme .choices #theme-dark",
+    "#theme .setting-radio-choices #theme-light",
+    "#theme .setting-radio-choices #theme-dark",
     {"y": 1}
 )
 compare-elements-position-near: (
-    "#theme .choices #theme-dark",
-    "#theme .choices #theme-ayu",
+    "#theme .setting-radio-choices #theme-dark",
+    "#theme .setting-radio-choices #theme-ayu",
     {"y": 1}
 )
 compare-elements-position-near: (
-    "#theme .choices #theme-ayu",
-    "#theme .choices #theme-system-preference",
+    "#theme .setting-radio-choices #theme-ayu",
+    "#theme .setting-radio-choices #theme-system-preference",
     {"y": 1}
 )
 
@@ -180,17 +180,17 @@ assert-css: (
 // We now switch the display.
 click: "#theme-system-preference"
 // Wait for the hidden element to show up.
-wait-for: ".setting-line:not(.hidden) #preferred-dark-theme"
-assert: ".setting-line:not(.hidden) #preferred-light-theme"
+wait-for: "#preferred-dark-theme.setting-line:not(.hidden)"
+assert: "#preferred-light-theme.setting-line:not(.hidden)"
 
 // We check their text as well.
-assert-text: ("#preferred-dark-theme .setting-name", "Preferred dark theme")
-assert-text: ("#preferred-light-theme .setting-name", "Preferred light theme")
+assert-text: ("#preferred-dark-theme .setting-radio-name", "Preferred dark theme")
+assert-text: ("#preferred-light-theme .setting-radio-name", "Preferred light theme")
 
 // We now check that clicking on the toggles' text is like clicking on the checkbox.
 // To test it, we use the "Disable keyboard shortcuts".
 local-storage: {"rustdoc-disable-shortcuts": "false"}
-click: ".setting-line:last-child .settings-toggle .label"
+click: ".setting-line:last-child .setting-check span"
 assert-local-storage: {"rustdoc-disable-shortcuts": "true"}
 
 // Make sure that "Disable keyboard shortcuts" actually took effect.
@@ -200,7 +200,7 @@ assert-false: "#help-button .popover"
 wait-for-css: ("#settings-menu .popover", {"display": "block"})
 
 // Now turn keyboard shortcuts back on, and see if they work.
-click: ".setting-line:last-child .settings-toggle .label"
+click: ".setting-line:last-child .setting-check span"
 assert-local-storage: {"rustdoc-disable-shortcuts": "false"}
 press-key: "Escape"
 press-key: "?"

tests/rustdoc-gui/theme-change.goml

@@ -43,7 +43,7 @@ assert-local-storage: { "rustdoc-theme": "ayu" }
 
 assert-local-storage-false: { "rustdoc-use-system-theme": "true" }
 click: "#theme-system-preference"
-wait-for: ".setting-line:not(.hidden) #preferred-light-theme"
+wait-for: "#preferred-light-theme.setting-line:not(.hidden)"
 assert-local-storage: { "rustdoc-use-system-theme": "true" }
 // We click on both preferred light and dark themes to be sure that there is a change.
 click: "#preferred-light-theme-dark"
@@ -52,16 +52,16 @@ wait-for-css: ("body", { "background-color": |background_dark| })
 
 reload:
 // Ensure that the "preferred themes" are still displayed.
-wait-for: ".setting-line:not(.hidden) #preferred-light-theme"
+wait-for: "#preferred-light-theme.setting-line:not(.hidden)"
 click: "#theme-light"
 wait-for-css: ("body", { "background-color": |background_light| })
 assert-local-storage: { "rustdoc-theme": "light" }
 // Ensure it's now hidden again
-wait-for: ".setting-line.hidden #preferred-light-theme"
+wait-for: "#preferred-light-theme.setting-line.hidden"
 // And ensure the theme was rightly set.
 wait-for-css: ("body", { "background-color": |background_light| })
 assert-local-storage: { "rustdoc-theme": "light" }
 
 reload:
 wait-for: "#settings"
-assert: ".setting-line.hidden #preferred-light-theme"
+assert: "#preferred-light-theme.setting-line.hidden"