create ItemsAndSearchPanel, simplify search refs

.vscode/settings.json

@@ -2,5 +2,7 @@
     "editor.formatOnSave": true,
     "editor.tabSize": 2,
     "jest.pathToJest": "yarn test",
-    "jest.autoEnable": false
+    "jest.autoEnable": false,
+    "javascript.suggest.completeJSDocs": false,
+    "typescript.suggest.completeJSDocs": false
 }

src/app/ItemsAndSearchPanels.js

@@ -0,0 +1,146 @@
+import React from "react";
+import {
+  Box,
+  Flex,
+  Icon,
+  IconButton,
+  Input,
+  InputGroup,
+  InputLeftElement,
+  InputRightElement,
+} from "@chakra-ui/core";
+
+import ItemsPanel from "./ItemsPanel";
+import SearchPanel from "./SearchPanel";
+
+/**
+ * ItemsAndSearchPanels manages the shared layout and state for:
+ *   - ItemsPanel, which shows the items in the outfit now, and
+ *   - SearchPanel, which helps you find new items to add.
+ *
+ * These panels don't share a _lot_ of concerns; they're mainly intertwined by
+ * the fact that they share the SearchToolbar at the top!
+ *
+ * We try to keep the search concerns in the search components, by avoiding
+ * letting any actual _logic_ live at the root here; and instead just
+ * performing some wiring to help them interact with each other via simple
+ * state and refs.
+ */
+function ItemsAndSearchPanels({ loading, outfitState, dispatchToOutfit }) {
+  const [searchQuery, setSearchQuery] = React.useState("");
+  const scrollContainerRef = React.useRef();
+  const searchQueryRef = React.useRef();
+  const firstSearchResultRef = React.useRef();
+
+  return (
+    <Flex direction="column" height="100%">
+      <Box px="5" py="3" boxShadow="sm">
+        <SearchToolbar
+          query={searchQuery}
+          searchQueryRef={searchQueryRef}
+          firstSearchResultRef={firstSearchResultRef}
+          onChange={setSearchQuery}
+        />
+      </Box>
+      {searchQuery ? (
+        <Box
+          key="search-panel"
+          gridArea="items"
+          position="relative"
+          overflow="auto"
+          ref={scrollContainerRef}
+        >
+          <Box px="4" py="5">
+            <SearchPanel
+              query={searchQuery}
+              outfitState={outfitState}
+              dispatchToOutfit={dispatchToOutfit}
+              scrollContainerRef={scrollContainerRef}
+              searchQueryRef={searchQueryRef}
+              firstSearchResultRef={firstSearchResultRef}
+            />
+          </Box>
+        </Box>
+      ) : (
+        <Box
+          gridArea="items"
+          position="relative"
+          overflow="auto"
+          key="items-panel"
+        >
+          <Box px="4" py="5">
+            <ItemsPanel
+              loading={loading}
+              outfitState={outfitState}
+              dispatchToOutfit={dispatchToOutfit}
+            />
+          </Box>
+        </Box>
+      )}
+    </Flex>
+  );
+}
+
+/**
+ * SearchToolbar is rendered above both the ItemsPanel and the SearchPanel,
+ * and contains the search field where the user types their query.
+ *
+ * It has some subtle keyboard interaction support, like DownArrow to go to the
+ * first search result, and Escape to clear the search and go back to the
+ * ItemsPanel. (The SearchPanel can also send focus back to here, with Escape
+ * from anywhere, or UpArrow from the first result!)
+ */
+function SearchToolbar({
+  query,
+  searchQueryRef,
+  firstSearchResultRef,
+  onChange,
+}) {
+  const onMoveFocusDownToResults = (e) => {
+    if (firstSearchResultRef.current) {
+      firstSearchResultRef.current.focus();
+      e.preventDefault();
+    }
+  };
+
+  return (
+    <InputGroup>
+      <InputLeftElement>
+        <Icon name="search" color="gray.400" />
+      </InputLeftElement>
+      <Input
+        placeholder="Search for items to add…"
+        focusBorderColor="green.600"
+        color="green.800"
+        value={query}
+        ref={searchQueryRef}
+        onChange={(e) => onChange(e.target.value)}
+        onKeyDown={(e) => {
+          if (e.key === "Escape") {
+            onChange("");
+            e.target.blur();
+          } else if (e.key === "ArrowDown") {
+            onMoveFocusDownToResults(e);
+          }
+        }}
+      />
+      {query && (
+        <InputRightElement>
+          <IconButton
+            icon="close"
+            color="gray.400"
+            variant="ghost"
+            variantColor="green"
+            aria-label="Clear search"
+            onClick={() => onChange("")}
+            // Big style hacks here!
+            height="calc(100% - 2px)"
+            marginRight="2px"
+          />
+        </InputRightElement>
+      )}
+    </InputGroup>
+  );
+}
+
+export default ItemsAndSearchPanels;

src/app/SearchPanel.js

@@ -11,9 +11,24 @@ function SearchPanel({
   query,
   outfitState,
   dispatchToOutfit,
+  scrollContainerRef,
+  searchQueryRef,
   firstSearchResultRef,
-  onMoveFocusUpToQuery,
 }) {
+  // Whenever the search query changes, scroll back up to the top!
+  React.useEffect(() => {
+    if (scrollContainerRef.current) {
+      scrollContainerRef.current.scrollTop = 0;
+    }
+  }, [query, scrollContainerRef]);
+
+  const onMoveFocusUpToQuery = (e) => {
+    if (searchQueryRef.current) {
+      searchQueryRef.current.focus();
+      e.preventDefault();
+    }
+  };
+
   return (
     <Box
       color="green.800"
@@ -28,6 +43,7 @@ function SearchPanel({
         query={query}
         outfitState={outfitState}
         dispatchToOutfit={dispatchToOutfit}
+        scrollContainerRef={scrollContainerRef}
         firstSearchResultRef={firstSearchResultRef}
         onMoveFocusUpToQuery={onMoveFocusUpToQuery}
       />
@@ -39,6 +55,7 @@ function SearchResults({
   query,
   outfitState,
   dispatchToOutfit,
+  scrollContainerRef,
   firstSearchResultRef,
   onMoveFocusUpToQuery,
 }) {
@@ -142,6 +159,8 @@ function SearchResults({
     }
   }, [loading, isEndOfResults, fetchMore, items.length]);
 
+  useScrollTracker({ threshold: 300, scrollContainerRef, onScrolledToBottom });
+
   if (resultQuery !== query || (loading && items.length === 0)) {
     return (
       <Delay ms={500}>
@@ -206,7 +225,7 @@ function SearchResults({
   };
 
   return (
-    <ScrollTracker threshold={300} onScrolledToBottom={onScrolledToBottom}>
+    <>
       <ItemListContainer>
         {items.map((item, index) => (
           <label key={item.id}>
@@ -237,14 +256,15 @@ function SearchResults({
         ))}
       </ItemListContainer>
       {items && loading && <ItemListSkeleton count={8} />}
-    </ScrollTracker>
+    </>
   );
 }
 
-function ScrollTracker({ children, threshold, onScrolledToBottom }) {
-  const containerRef = React.useRef();
-  const scrollParent = React.useRef();
-
+function useScrollTracker({
+  threshold,
+  scrollContainerRef,
+  onScrolledToBottom,
+}) {
   const onScroll = React.useCallback(
     (e) => {
       const topEdgeScrollPosition = e.target.scrollTop;
@@ -260,31 +280,20 @@ function ScrollTracker({ children, threshold, onScrolledToBottom }) {
   );
 
   React.useLayoutEffect(() => {
-    if (!containerRef.current) {
+    const scrollContainer = scrollContainerRef.current;
+
+    if (!scrollContainer) {
       return;
     }
 
-    scrollParent.current = getScrollParent(containerRef.current);
-    scrollParent.current.addEventListener("scroll", onScroll);
+    scrollContainer.addEventListener("scroll", onScroll);
 
     return () => {
-      if (scrollParent.current) {
-        scrollParent.current.removeEventListener("scroll", onScroll);
+      if (scrollContainer) {
+        scrollContainer.removeEventListener("scroll", onScroll);
       }
     };
-  }, [onScroll]);
-
-  return <div ref={containerRef}>{children}</div>;
-}
-
-function getScrollParent(target) {
-  for (let el = target; el.parentNode; el = el.parentNode) {
-    if (getComputedStyle(el).overflow === "auto") {
-      return el;
-    }
-  }
-
-  throw new Error(`found no scroll parent`);
+  }, [onScroll, scrollContainerRef]);
 }
 
 export default SearchPanel;

src/app/WardrobePage.js

@@ -1,30 +1,28 @@
 import React from "react";
-import {
-  Box,
-  Grid,
-  Icon,
-  IconButton,
-  Input,
-  InputGroup,
-  InputLeftElement,
-  InputRightElement,
-  useToast,
-} from "@chakra-ui/core";
+import { Box, Grid, useToast } from "@chakra-ui/core";
 import { Helmet } from "react-helmet";
 
-import ItemsPanel from "./ItemsPanel";
+import ItemsAndSearchPanels from "./ItemsAndSearchPanels";
 import OutfitPreview from "./OutfitPreview";
-import SearchPanel from "./SearchPanel";
 import useOutfitState from "./useOutfitState.js";
 
+/**
+ * WardrobePage is the most fun page on the site - it's where you create
+ * outfits!
+ *
+ * This page has two sections: the OutfitPreview, where we show the outfit as a
+ * big image; and the ItemsAndSearchPanels, which let you manage which items
+ * are in the outfit and find new ones.
+ *
+ * This component manages shared outfit state, and the fullscreen responsive
+ * page layout.
+ */
 function WardrobePage() {
-  const { loading, error, outfitState, dispatchToOutfit } = useOutfitState();
-  const [searchQuery, setSearchQuery] = React.useState("");
   const toast = useToast();
-  const searchContainerRef = React.useRef();
-  const searchQueryRef = React.useRef();
-  const firstSearchResultRef = React.useRef();
+  const { loading, error, outfitState, dispatchToOutfit } = useOutfitState();
 
+  // TODO: I haven't found a great place for this error UI yet, and this case
+  // isn't very common, so this lil toast notification seems good enough!
   React.useEffect(() => {
     if (error) {
       console.log(error);
@@ -38,12 +36,6 @@ function WardrobePage() {
     }
   }, [error, toast]);
 
-  React.useEffect(() => {
-    if (searchContainerRef.current) {
-      searchContainerRef.current.scrollTop = 0;
-    }
-  }, [searchQuery]);
-
   return (
     <>
       <Helmet>
@@ -53,18 +45,14 @@ function WardrobePage() {
       </Helmet>
       <Box position="absolute" top="0" bottom="0" left="0" right="0">
         <Grid
-          // Fullscreen, split into a vertical stack on smaller screens
-          // or a horizontal stack on larger ones!
           templateAreas={{
-            base: `"outfit"
-                 "search"
-                 "items"`,
-            lg: `"outfit search"
-               "outfit items"`,
+            base: `"preview"
+                   "itemsAndSearch"`,
+            lg: `"preview itemsAndSearch"`,
           }}
           templateRows={{
-            base: "minmax(100px, 1fr) auto minmax(300px, 1fr)",
-            lg: "auto 1fr",
+            base: "minmax(100px, 45%) minmax(300px, 55%)",
+            lg: "100%",
           }}
           templateColumns={{
             base: "100%",
@@ -73,117 +61,23 @@ function WardrobePage() {
           height="100%"
           width="100%"
         >
-          <Box gridArea="outfit" backgroundColor="gray.900">
+          <Box gridArea="preview" backgroundColor="gray.900">
             <OutfitPreview
               outfitState={outfitState}
               dispatchToOutfit={dispatchToOutfit}
             />
           </Box>
-          <Box gridArea="search" boxShadow="sm">
-            <Box px="5" py="3">
-              <SearchToolbar
-                query={searchQuery}
-                queryRef={searchQueryRef}
-                onChange={setSearchQuery}
-                onMoveFocusDownToResults={(e) => {
-                  if (firstSearchResultRef.current) {
-                    firstSearchResultRef.current.focus();
-                    e.preventDefault();
-                  }
-                }}
-              />
-            </Box>
+          <Box gridArea="itemsAndSearch">
+            <ItemsAndSearchPanels
+              loading={loading}
+              outfitState={outfitState}
+              dispatchToOutfit={dispatchToOutfit}
+            />
           </Box>
-
-          {searchQuery ? (
-            <Box
-              gridArea="items"
-              position="relative"
-              overflow="auto"
-              key="search-panel"
-              ref={searchContainerRef}
-            >
-              <Box px="4" py="5">
-                <SearchPanel
-                  query={searchQuery}
-                  outfitState={outfitState}
-                  dispatchToOutfit={dispatchToOutfit}
-                  firstSearchResultRef={firstSearchResultRef}
-                  onMoveFocusUpToQuery={(e) => {
-                    if (searchQueryRef.current) {
-                      searchQueryRef.current.focus();
-                      e.preventDefault();
-                    }
-                  }}
-                />
-              </Box>
-            </Box>
-          ) : (
-            <Box
-              gridArea="items"
-              position="relative"
-              overflow="auto"
-              key="items-panel"
-            >
-              <Box px="5" py="5">
-                <ItemsPanel
-                  loading={loading}
-                  outfitState={outfitState}
-                  dispatchToOutfit={dispatchToOutfit}
-                />
-              </Box>
-            </Box>
-          )}
         </Grid>
       </Box>
     </>
   );
 }
 
-function SearchToolbar({
-  query,
-  queryRef,
-  onChange,
-  onMoveFocusDownToResults,
-}) {
-  return (
-    <InputGroup>
-      <InputLeftElement>
-        <Icon name="search" color="gray.400" />
-      </InputLeftElement>
-      <Input
-        placeholder="Search for items to add…"
-        focusBorderColor="green.600"
-        color="green.800"
-        value={query}
-        ref={queryRef}
-        onChange={(e) => onChange(e.target.value)}
-        onKeyDown={(e) => {
-          if (e.key === "Escape") {
-            onChange("");
-            e.target.blur();
-          } else if (e.key === "ArrowDown") {
-            onMoveFocusDownToResults(e);
-          }
-        }}
-      />
-      {query && (
-        <InputRightElement>
-          <IconButton
-            icon="close"
-            color="gray.400"
-            variant="ghost"
-            variantColor="green"
-            aria-label="Clear search"
-            onClick={() => onChange("")}
-            // Big style hacks here!
-            height="calc(100% - 2px)"
-            marginRight="2px"
-          />
-        </InputRightElement>
-      )}
-    </InputGroup>
-  );
-}
-
 export default WardrobePage;