From 604bfd09ce1c0b1f0d1edbca7dd95368d6da031f Mon Sep 17 00:00:00 2001
From: Jo Emil Holen <jo.emil.holen@fremtind.no>
Date: Wed, 30 Nov 2022 12:20:12 +0100
Subject: [PATCH] feat: add sticky table header
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

reverts 8a555fee131ebceac4b7f47820385242769441e5 to add support for
sticky heading. this is added through an optional prop, and exposing a
css variable to be able to set the background color of the head. this
defaults to the Jøkul background color
---
 doc-utils/ComponentExample.tsx                |  1 +
 doc-utils/ExampleBase.tsx                     |  4 +-
 .../table-react/documentation/Example.tsx     |  8 ++
 .../documentation/StickyTableExample.tsx      | 88 +++++++++++++++++++
 packages/table-react/src/TableHead.tsx        |  4 +-
 packages/table/_table-head.scss               | 17 ++++
 6 files changed, 120 insertions(+), 2 deletions(-)
 create mode 100644 packages/table-react/documentation/StickyTableExample.tsx

diff --git a/doc-utils/ComponentExample.tsx b/doc-utils/ComponentExample.tsx
index c9d8d35b458..a2a49e2d44b 100644
--- a/doc-utils/ComponentExample.tsx
+++ b/doc-utils/ComponentExample.tsx
@@ -11,6 +11,7 @@ export interface Props {
         choiceProps?: Array<ChoiceProp>;
     };
     codeExample?: CodeExample;
+    style?: React.CSSProperties;
 }
 
 export const ComponentExample: FC<Props> = ({ component, ...rest }) => {
diff --git a/doc-utils/ExampleBase.tsx b/doc-utils/ExampleBase.tsx
index 709b8279464..614528862e1 100644
--- a/doc-utils/ExampleBase.tsx
+++ b/doc-utils/ExampleBase.tsx
@@ -19,6 +19,7 @@ export interface Props {
         choiceProps?: Array<ChoiceProp>;
     };
     codeExample?: CodeExample;
+    style?: React.CSSProperties;
 }
 
 function useLocalStorage<T>(key: string, defaultValue: T): [T, (newValue: T) => void] {
@@ -46,7 +47,7 @@ function useLocalStorage<T>(key: string, defaultValue: T): [T, (newValue: T) =>
     return [state, setState];
 }
 
-export const ExampleBase: FC<Props> = ({ component, knobs, title = "Komponent", codeExample, scrollable }) => {
+export const ExampleBase: FC<Props> = ({ component, knobs, title = "Komponent", codeExample, scrollable, style }) => {
     const uid = useId("example");
     const [theme, setTheme] = useLocalStorage<ColorScheme>("jkl-example-theme", "light");
     const [density, setDensity] = useLocalStorage<Density>("jkl-example-density", "comfortable");
@@ -96,6 +97,7 @@ export const ExampleBase: FC<Props> = ({ component, knobs, title = "Komponent",
                     } ${scrollable ? "jkl-portal-component-example__example-wrapper--scrollable" : ""} ${
                         density === "comfortable" ? "jkl-body" : ""
                     } ${density === "compact" ? "jkl-small" : ""}`.trim()}
+                    style={style}
                 >
                     {example}
                 </div>
diff --git a/packages/table-react/documentation/Example.tsx b/packages/table-react/documentation/Example.tsx
index 021532fd3f1..e23c02ccba8 100644
--- a/packages/table-react/documentation/Example.tsx
+++ b/packages/table-react/documentation/Example.tsx
@@ -17,6 +17,7 @@ import "../../table/table.scss";
 import "../../button/button.scss";
 import "../../icons/animated-icons.scss";
 import "../../expand-button/expand-button.scss";
+import StickyTableExample, { stickyTableExampleCode } from "./StickyTableExample";
 
 export default function Example() {
     return (
@@ -69,6 +70,13 @@ export default function Example() {
                 knobs={expandableTableExampleKnobs}
                 codeExample={expandableTableExampleCode}
             />
+            <DevExample
+                style={{ height: "200px" }}
+                scrollable={true}
+                title="Tabell med sticky header"
+                component={StickyTableExample}
+                codeExample={stickyTableExampleCode}
+            />
         </>
     );
 }
diff --git a/packages/table-react/documentation/StickyTableExample.tsx b/packages/table-react/documentation/StickyTableExample.tsx
new file mode 100644
index 00000000000..1a0371bea44
--- /dev/null
+++ b/packages/table-react/documentation/StickyTableExample.tsx
@@ -0,0 +1,88 @@
+import React, { FC } from "react";
+import { ExampleComponentProps } from "../../../doc-utils";
+import { Table, TableBody, TableCaption, TableCell, TableHead, TableHeader, TableRow } from "../src";
+
+const columns = ["Dato", "Saksnummer", "Kundenummer", "Kundenavn", "Milepæl", "Følger saken"];
+
+const rows = [
+    ["24.02.2020", "20-1234567", "010203 99887", "Ola Nordmann", "Opprettet", "Siri Saksbehandler"],
+    ["13.04.2019", "20-8382811", "010203 99887", "Kari Nordkvinne", "Opprettet", "Siri Saksbehandler"],
+    ["31.07.2017", "20-1111", "010203 99887", "Kari Nordkvinne", "Opprettet", "Per Persen"],
+    ["24.02.2020", "20-1234567", "010203 99887", "Ola Nordmann", "Opprettet", "Siri Saksbehandler"],
+    ["13.04.2019", "20-8382811", "010203 99887", "Kari Nordkvinne", "Opprettet", "Siri Saksbehandler"],
+    ["31.07.2017", "20-1111", "010203 99887", "Kari Nordkvinne", "Opprettet", "Per Persen"],
+    ["24.02.2020", "20-1234567", "010203 99887", "Ola Nordmann", "Opprettet", "Siri Saksbehandler"],
+    ["13.04.2019", "20-8382811", "010203 99887", "Kari Nordkvinne", "Opprettet", "Siri Saksbehandler"],
+    ["31.07.2017", "20-1111", "010203 99887", "Kari Nordkvinne", "Opprettet", "Per Persen"],
+    ["24.02.2020", "20-1234567", "010203 99887", "Ola Nordmann", "Opprettet", "Siri Saksbehandler"],
+    ["13.04.2019", "20-8382811", "010203 99887", "Kari Nordkvinne", "Opprettet", "Siri Saksbehandler"],
+    ["31.07.2017", "20-1111", "010203 99887", "Kari Nordkvinne", "Opprettet", "Per Persen"],
+];
+
+const StickyTableExample: FC<ExampleComponentProps> = ({ boolValues, choiceValues }) => {
+    const headless = boolValues?.["Skjul overskrift"];
+    const type = choiceValues?.["Mobilvisning"];
+    const props = type === "Liste" ? { "data-collapse": "true", collapseToList: true } : {};
+
+    return (
+        <Table fullWidth {...props} style={{ height: "100px" }}>
+            <TableCaption srOnly>Overskrift for skjermlesere</TableCaption>
+            <TableHead srOnly={headless} sticky>
+                <TableRow>
+                    {columns.map((column, index) => (
+                        <TableHeader key={index} density="compact" bold>
+                            {column}
+                        </TableHeader>
+                    ))}
+                </TableRow>
+            </TableHead>
+            <TableBody>
+                {rows.map((row, rowIndex) => (
+                    <TableRow key={rowIndex}>
+                        {row.map((cell, cellIndex) => (
+                            <TableCell
+                                key={cellIndex}
+                                data-th={columns[cellIndex]}
+                                align={[1, 2].includes(cellIndex) ? "right" : "left"}
+                            >
+                                {cell}
+                            </TableCell>
+                        ))}
+                    </TableRow>
+                ))}
+            </TableBody>
+        </Table>
+    );
+};
+
+export default StickyTableExample;
+
+export const stickyTableExampleCode = ({ boolValues, choiceValues }: ExampleComponentProps): string => `
+<Table fullWidth collapseToList={${choiceValues?.["Mobilvisning"] === "Liste"}}>
+    <TableCaption srOnly>Overskrift for skjermlesere</TableCaption>
+    <TableHead srOnly={${boolValues?.["Skjul overskrift"]}}>
+        <TableRow>
+            {columns.map((header, index) => (
+                <TableHeader key={index} density="compact" bold>
+                    {header}
+                </TableHeader>
+            ))}
+        </TableRow>
+    </TableHead>
+    <TableBody>
+        {rows.map((row, rowIndex) => (
+            <TableRow key={rowIndex}>
+                {row.map((cell, cellIndex) => (
+                    <TableCell
+                        key={cellIndex}
+                        data-th={columns[cellIndex]}
+                        align={[1, 2].includes(cellIndex) ? "right" : "left"}
+                    >
+                        {cell}
+                    </TableCell>
+                ))}
+            </TableRow>
+        ))}
+    </TableBody>
+</Table>
+`;
diff --git a/packages/table-react/src/TableHead.tsx b/packages/table-react/src/TableHead.tsx
index 276ed529f02..b90f1a22551 100644
--- a/packages/table-react/src/TableHead.tsx
+++ b/packages/table-react/src/TableHead.tsx
@@ -4,14 +4,16 @@ import { TableSectionContextProvider } from "./tableSectionContext";
 
 export interface TableHeadProps extends HTMLAttributes<HTMLTableSectionElement> {
     srOnly?: boolean;
+    sticky?: boolean;
 }
 
-const TableHead = forwardRef<HTMLTableSectionElement, TableHeadProps>(({ className, srOnly, ...rest }, ref) => {
+const TableHead = forwardRef<HTMLTableSectionElement, TableHeadProps>(({ className, srOnly, sticky, ...rest }, ref) => {
     return (
         <TableSectionContextProvider state={{ isTableHead: true, isTableBody: false, isTableFooter: false }}>
             <thead
                 className={cx("jkl-table-head", className, {
                     ["jkl-table-head--sr-only"]: srOnly,
+                    ["jkl-table-head--sticky"]: sticky,
                 })}
                 {...rest}
                 ref={ref}
diff --git a/packages/table/_table-head.scss b/packages/table/_table-head.scss
index 29b92e32ef9..3d6a520385c 100644
--- a/packages/table/_table-head.scss
+++ b/packages/table/_table-head.scss
@@ -1,7 +1,24 @@
 @use "~@fremtind/jkl-core/jkl";
 
+@include jkl.light-mode-variables {
+    --jkl-table-head-sticky-color: var(--jkl-background-color);
+}
+
+@include jkl.dark-mode-variables {
+    --jkl-table-head-sticky-color: var(--jkl-background-color);
+}
+
 .jkl-table-head {
     &--sr-only {
         @include jkl.screenreader-only;
     }
+
+    &--sticky {
+        & > .jkl-table-row {
+            position: sticky;
+            top: 0;
+            z-index: 1;
+            background-color: var(--jkl-table-head-sticky-color);
+        }
+    }
 }