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refactor(theme-common): allow optional desktopBreakpoint param in useWindowSize #9335

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merged 16 commits into from
Dec 1, 2023
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refactor(theme-common): allow optional desktopBreakpoint param in useWindowSize #9335

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9f90240
feat(theme-common): Get desktopThresholdWidth from docusaurus config,…
jgarrow Aug 25, 2023
c629834
Update example to dogfood custom desktopThresholdWidth
jgarrow Aug 25, 2023
d3feed9
Revert "Update example to dogfood custom desktopThresholdWidth"
jgarrow Aug 25, 2023
7bb3c9c
dogfooding: Add custom desktop breakpoint to theme config
jgarrow Aug 25, 2023
6535c04
Handle falsey value
jgarrow Aug 25, 2023
480684c
Update ThemeConfig type
jgarrow Aug 25, 2023
19f9abe
Allow optional desktopThresholdWidth param for useWindowSize hook
jgarrow Sep 8, 2023
18d0edb
Remove dogfooding from previous implementation
jgarrow Sep 21, 2023
18ace77
Change useWindowSize hook param to object
jgarrow Sep 25, 2023
0a09563
Update docs
jgarrow Sep 25, 2023
df7ffbf
Change arg shape for getWindowSize instead of useWindowSize
jgarrow Sep 25, 2023
9436389
Update useWindowSize docs as per feedback
jgarrow Oct 3, 2023
1584349
Merge branch 'main' into main
Josh-Cena Nov 24, 2023
63369d3
Use object param in the right place
Josh-Cena Nov 24, 2023
4f3ab26
Update website/docs/styling-layout.mdx
Josh-Cena Nov 24, 2023
c063b18
minor refactors
slorber Dec 1, 2023
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19 changes: 11 additions & 8 deletions packages/docusaurus-theme-common/src/hooks/useWindowSize.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -17,13 +17,16 @@ const windowSizes = {

type WindowSize = keyof typeof windowSizes;

const DesktopThresholdWidth = 996;

function getWindowSize() {
function getWindowSize({
desktopThresholdWidth = 996,
}: {
desktopThresholdWidth?: number;
}): WindowSize {
if (!ExecutionEnvironment.canUseDOM) {
return windowSizes.ssr;
}
return window.innerWidth > DesktopThresholdWidth

return window.innerWidth > desktopThresholdWidth
? windowSizes.desktop
: windowSizes.mobile;
}
Expand All @@ -43,17 +46,17 @@ const DevSimulateSSR = process.env.NODE_ENV === 'development' && true;
* In development mode, this hook will still return `"ssr"` for one second, to
* catch potential layout shifts, similar to strict mode calling effects twice.
*/
export function useWindowSize(): WindowSize {
export function useWindowSize(desktopThresholdWidth = 996): WindowSize {
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Not fan of using a single arg there, please use a flexible object instead because we don't want to do a breaking change if we later introduce a new breakpoint some day or if you or someone else come with the need for 3 different sizes. If we add flexibility for your use case, let's make it flexible enough for other use cases as well.

This lib has a decent API to copy imho: https://github.com/iiroj/use-breakpoint

const BREAKPOINTS = { mobile: 0, tablet: 768, desktop: 1280 }

const CurrentBreakpoint = () => {
  const { breakpoint, maxWidth, minWidth } = useBreakpoint(
    BREAKPOINTS,
    'desktop'
  )
  return <p>The current breakpoint is {breakpoint}!</p>
}

(by the way you could as well use this lib directly in your code, similar behavior to what we implemented here).

const [windowSize, setWindowSize] = useState<WindowSize>(() => {
if (DevSimulateSSR) {
return 'ssr';
}
return getWindowSize();
return getWindowSize({desktopThresholdWidth});
});

useEffect(() => {
function updateWindowSize() {
setWindowSize(getWindowSize());
setWindowSize(getWindowSize({desktopThresholdWidth}));
}

const timeout = DevSimulateSSR
Expand All @@ -66,7 +69,7 @@ export function useWindowSize(): WindowSize {
window.removeEventListener('resize', updateWindowSize);
clearTimeout(timeout);
};
}, []);
}, [desktopThresholdWidth]);

return windowSize;
}
2 changes: 2 additions & 0 deletions website/docs/styling-layout.mdx
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Expand Up @@ -180,6 +180,8 @@ Docusaurus uses `996px` as the cutoff between mobile screen width and desktop. I
}
```

:::tip Header and Sidebar Some components, such as the header and sidebar, use a `useWindowSize` hook to set their breakpoint value. If you change the breakpoint value in your custom CSS, you probably also want to update the invocations of the `useWindowSize` hook by swizzling the components it's used in and passing it an argument that updates the breakpoint value (for example, to change the breakpoint to 796px, pass the object `{ desktopThresholdWidth: 796 }` as an argument to the `useWindowSize` hook). :::
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## CSS modules {#css-modules}

To style your components using [CSS Modules](https://github.com/css-modules/css-modules), name your stylesheet files with the `.module.css` suffix (e.g. `welcome.module.css`). Webpack will load such CSS files as CSS modules and you have to reference the class names as properties of the imported CSS module (as opposed to using plain strings). This is similar to the convention used in [Create React App](https://facebook.github.io/create-react-app/docs/adding-a-css-modules-stylesheet).
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