Fix PxL docs navigation bug (#198)

* fixes #186

Signed-off-by: Cristian Postescu <postescu@gmail.com>

* fixes #192

Signed-off-by: Cristian Postescu <postescu@gmail.com>

* small fix

Signed-off-by: Cristian Postescu <postescu@gmail.com>

Author: postescu

gatsby-browser.js

@@ -48,6 +48,11 @@ export const onRouteUpdate = () => {
     sessionStorage.setItem('referrer', window.locations[0]);
   }
   runZoom();
+
+  const mmsc = document.getElementById('main-meu-scroll-container');
+  if (mmsc) {
+    mmsc.scrollTop = window.mmscScrollTop || 0;
+  }
 };
 
 // eslint-disable-next-line import/prefer-default-export

src/components/sidebar/categoryItem.tsx

@@ -97,6 +97,9 @@ const CategoryItem = withStyles((theme: Theme) => ({
   };
 
   const goToPage = (link) => {
+    const mmsc = document.getElementById('main-meu-scroll-container');
+    // @ts-ignore
+    window.mmscScrollTop = mmsc.scrollTop;
     navigate(link);
   };
   return (

src/components/sidebar/sidebar.tsx

@@ -227,7 +227,7 @@ const Sidebar = withStyles((theme: Theme) => ({
               firstRun,
               setFirstRun,
             }) => (
-              <div className={classes.main}>
+              <div className={classes.main} id='main-meu-scroll-container'>
                 <ExpandFirstLevelOnce
                   setExpanded={setExpanded}
                   edges={allDocsForExpand}