feat: Sicky search input for advanced styles section (#4998)

## Description

1. What is this PR about (link the issue and add a short description)

## Steps for reproduction

1. click button
2. expect xyz

## Code Review

- [ ] hi @kof, I need you to do
  - conceptual review (architecture, feature-correctness)
  - detailed review (read every line)
  - test it on preview

## Before requesting a review

- [ ] made a self-review
- [ ] added inline comments where things may be not obvious (the "why",
not "what")

## Before merging

- [ ] tested locally and on preview environment (preview dev login:
0000)
- [ ] updated [test
cases](https://github.com/webstudio-is/webstudio/blob/main/apps/builder/docs/test-cases.md)
document
- [ ] added tests
- [ ] if any new env variables are added, added them to `.env` file

Author: kof

apps/builder/app/builder/features/style-panel/sections/advanced/advanced.tsx

@@ -22,7 +22,6 @@ import { getDots } from "../../shared/style-section";
 import { CssEditor, type CssEditorApi } from "../../../../shared/css-editor";
 import { $advancedStyleDeclarations } from "./stores";
 import { $selectedInstanceKey } from "~/shared/awareness";
-import { getSetting } from "~/builder/shared/client-settings";
 
 // Only here to keep the same section module interface
 export const properties = [];
@@ -143,7 +142,6 @@ export const Section = () => {
         onDeleteAllDeclarations={handleDeleteAllDeclarations}
         apiRef={apiRef}
         recentProperties={recentProperties}
-        memorizeMinHeight={getSetting("stylePanelMode") !== "advanced"}
       />
     </AdvancedStyleSection>
   );

apps/builder/app/builder/shared/css-editor/css-editor.tsx

@@ -320,7 +320,6 @@ export const CssEditor = ({
   virtualize = true,
   propertiesPosition = "bottom",
   recentProperties = [],
-  memorizeMinHeight = true,
 }: {
   declarations: Array<ComputedStyleDecl>;
   onDeleteProperty: DeleteProperty;
@@ -329,9 +328,6 @@ export const CssEditor = ({
   onDeleteAllDeclarations: (styleMap: CssStyleMap) => void;
   apiRef?: RefObject<CssEditorApi>;
   showSearch?: boolean;
-  // When used as part of some larger scroll area to avoid scroll jumps during search.
-  // For example advanced section in the style panel.
-  memorizeMinHeight?: boolean;
   propertiesPosition?: "top" | "bottom";
   virtualize?: boolean;
   recentProperties?: Array<CssProperty>;
@@ -344,7 +340,6 @@ export const CssEditor = ({
   const [searchProperties, setSearchProperties] =
     useState<Array<CssProperty>>();
   const containerRef = useRef<HTMLDivElement>(null);
-  const [minHeight, setMinHeight] = useState<number>(0);
   useImperativeHandle(apiRef, () => ({
     showAddStyleInput() {
       handleShowAddStyleInput();
@@ -384,18 +379,30 @@ export const CssEditor = ({
   };
 
   const handleAbortSearch = () => {
-    setMinHeight(0);
+    if (containerRef.current) {
+      containerRef.current.style.minHeight = "auto";
+    }
     setSearchProperties(undefined);
   };
 
   const handleSearch = (event: ChangeEvent<HTMLInputElement>) => {
     const search = event.target.value.trim().replaceAll("-", " ");
+
     if (search === "") {
       return handleAbortSearch();
     }
-
-    if (memorizeMinHeight) {
-      setMinHeight(containerRef.current?.getBoundingClientRect().height ?? 0);
+    // This keeps container height big enough to avoid scroll position jumping around while user types.
+    if (containerRef.current) {
+      containerRef.current.style.height = `${window.innerHeight}px`;
+      // Min height is needed as long as the search is active.
+      containerRef.current.style.minHeight = `${window.innerHeight}px`;
+      requestAnimationFrame(() => {
+        // We can't keep it permanently because we need user to see all of the content.
+        // Fixed height only needed temporarily while react rerenders the tree to avoid jumps.
+        if (containerRef.current) {
+          containerRef.current.style.height = "auto";
+        }
+      });
     }
 
     const styles = declarations.map(({ property, cascadedValue }) => {
@@ -503,9 +510,17 @@ export const CssEditor = ({
   );
 
   return (
-    <>
+    <Box css={{ isolation: "isolate" }}>
       {showSearch && (
-        <Box css={{ paddingInline: theme.panel.paddingInline }}>
+        <Box
+          css={{
+            padding: theme.panel.padding,
+            position: "sticky",
+            top: 0,
+            background: theme.colors.backgroundPanel,
+            zIndex: 1,
+          }}
+        >
           <SearchField
             inputRef={searchInputRef}
             onChange={handleSearch}
@@ -531,8 +546,10 @@ export const CssEditor = ({
           )}
           <Flex
             direction="column"
-            css={{ paddingInline: theme.panel.paddingInline, gap: 2 }}
-            style={{ minHeight }}
+            css={{
+              paddingInline: theme.panel.paddingInline,
+              gap: 2,
+            }}
             ref={containerRef}
           >
             {currentProperties.map((property) => {
@@ -569,6 +586,6 @@ export const CssEditor = ({
           )}
         </Flex>
       </CssEditorContextMenu>
-    </>
+    </Box>
   );
 };