chore(react/ribbon): also react to width, not just height

apps/client/src/widgets/react/hooks.tsx

@@ -456,22 +456,41 @@ export function useLegacyWidget<T extends BasicWidget>(widgetFactory: () => T, {
     return [ <div className={containerClassName} ref={ref} />, widget ]
 }
 
-export function useResizeObserver(ref: RefObject<HTMLElement>, callback: ResizeObserverCallback) {
+/**
+ * Attaches a {@link ResizeObserver} to the given ref and reads the bounding client rect whenever it changes.
+ * 
+ * @param ref a ref to a {@link HTMLElement} to determine the size and observe the changes in size.
+ * @returns the size of the element, reacting to changes.
+ */
+export function useElementSize(ref: RefObject<HTMLElement>) {
+    const [ size, setSize ] = useState<DOMRect | undefined>(ref.current?.getBoundingClientRect());
+
     useEffect(() => {
         if (!ref.current) {
             return;
         }
 
+        function onResize() {
+            setSize(ref.current?.getBoundingClientRect());
+        }
+
         const element = ref.current;
-        const resizeObserver = new ResizeObserver(callback);
+        const resizeObserver = new ResizeObserver(onResize);
         resizeObserver.observe(element);
         return () => {
             resizeObserver.unobserve(element);
             resizeObserver.disconnect();
         }
-    }, [ ref, callback ]);
+    }, [ ref ]);
+
+    return size;
 }
 
+/**
+ * Obtains the inner width and height of the window, as well as reacts to changes in size.
+ * 
+ * @returns the width and height of the window.
+ */
 export function useWindowSize() {
     const [ size, setSize ] = useState<{ windowWidth: number, windowHeight: number }>({
         windowWidth: window.innerWidth,

apps/client/src/widgets/ribbon/NoteMapTab.tsx

@@ -1,9 +1,9 @@
 import { TabContext } from "./ribbon-interface";
 import NoteMapWidget from "../note_map";
-import { useLegacyWidget, useWindowSize } from "../react/hooks";
+import { useElementSize, useLegacyWidget, useWindowSize } from "../react/hooks";
 import ActionButton from "../react/ActionButton";
 import { t } from "../../services/i18n";
-import { useCallback, useEffect, useRef, useState } from "preact/hooks";
+import { useEffect, useRef, useState } from "preact/hooks";
 
 const SMALL_SIZE_HEIGHT = "300px";
 
@@ -12,6 +12,7 @@ export default function NoteMapTab({ note, noteContext }: TabContext) {
     const [ height, setHeight ] = useState(SMALL_SIZE_HEIGHT);
     const containerRef = useRef<HTMLDivElement>(null);
     const { windowHeight } = useWindowSize();
+    const containerSize = useElementSize(containerRef);
 
     const [ noteMapContainer, noteMapWidget ] = useLegacyWidget(() => new NoteMapWidget("ribbon"), {
         noteContext,
@@ -19,15 +20,14 @@ export default function NoteMapTab({ note, noteContext }: TabContext) {
     });
     
     useEffect(() => {
-        if (isExpanded && containerRef.current) {
-            const { top } = containerRef.current.getBoundingClientRect();
-            const height = windowHeight - top;
+        if (isExpanded && containerRef.current && containerSize) {
+            const height = windowHeight - containerSize.top;
             setHeight(height + "px");
         } else {
             setHeight(SMALL_SIZE_HEIGHT);
         }
-    }, [ isExpanded, containerRef, windowHeight ]);
-    useEffect(() => noteMapWidget.setDimensions(), [ height ]);    
+    }, [ isExpanded, containerRef, windowHeight, containerSize?.top ]);
+    useEffect(() => noteMapWidget.setDimensions(), [ containerSize?.width, height ]);    
 
     return (
         <div className="note-map-ribbon-widget" style={{ height }} ref={containerRef}>