@solid-primitives/presence
v0.1.2TypeScript
Utility to animate the presence of an element based on the existence of data or lack thereof.
12.8K/weekUpdated 7 months agoMITUnpacked: 15.4 KB
Published by Ethan Standel
npm install @solid-primitives/presence
@solid-primitives/presence
A small SolidJS utility to animate the presence of an element. Inspired by & directly forked from use-presence.
$3
There are two problems that you have to solve when animating the presence of an element:
1. During enter animations, you have to render an initial state where the element is hidden and only after the latest state has propagated to the DOM, you can can animate the final state that the element should animate towards.
2. Exit animations are a bit tricky in SolidJS, since this typically means that a component unmounts. However when the component has already unmounted, you can't animate it anymore. A workaround is often to keep the element mounted, but that keeps unnecessary elements around and can hurt accessibility, as hidden interactive elements might still be focusable.
$3
This utility provides a lightweight solution where the animating element is only mounted the minimum of time, while making sure the animation is fully visible to the user. The rendering is left to the user to support all kinds of styling solutions.
Installation
``bash`
npm install @solid-primitives/presenceor
yarn add @solid-primitives/presenceor
pnpm add @solid-primitives/presence
How to use it
$3
`tsx
const FirstExample = () => {
const [showStuff, setShowStuff] = createSignal(true);
const { isVisible, isMounted } = createPresence(showStuff, {
transitionDuration: 500,
});
return (
padding: "2em",
margin: "2em",
"border-radius": "2em",
"box-shadow": "-5px 0px 10px rgba(0, 0, 0, 0.2)",
}}
>
transition: "all .5s ease",
opacity: isVisible() ? "1" : "0",
transform: isVisible() ? "translateX(0)" : "translateX(50px)",
}}
>
I am the stuff!
);
};
`
$3
The first argument of
is a signal accessor of arbitrary type. This allows you to use it with any kind of data, not just booleans. This is useful if you want to animate between different items. If you utilize the returned mountedItem property, you can get the data which should be currently mounted regardless of the animation state`tsx
const SecondExample = () => {
const items = ["foo", "bar", "baz", "qux"];
const [activeItem, setActiveItem] = createSignal(items[0]);
const presence = createPresence(activeItem, {
transitionDuration: 500,
}); return (
padding: "2em",
margin: "2em",
"border-radius": "2em",
"box-shadow": "-5px 0px 10px rgba(0, 0, 0, 0.2)",
}}
>
{item => (
)}
transition: "all .5s linear",
...(presence.isEntering() && {
opacity: "0",
transform: "translateX(-25px)",
}),
...(presence.isExiting() && {
opacity: "0",
transform: "translateX(25px)",
}),
...(presence.isVisible() && {
opacity: "1",
transform: "translateX(0)",
}),
}}
>
{presence.mountedItem()}
);
};
`
$3
ts
function createPresence(
item: Accessor,
options: Options,
): PresenceResult;type Options = {
/* Duration in milliseconds used both for enter and exit transitions. /
transitionDuration: MaybeAccessor;
/* Duration in milliseconds used for enter transitions (overrides
transitionDuration if provided). /
enterDuration: MaybeAccessor;
/* Duration in milliseconds used for exit transitions (overrides transitionDuration if provided). /
exitDuration: MaybeAccessor;
/* Opt-in to animating the entering of an element if isVisible is true during the initial mount. /
initialEnter?: boolean;
};type PresenceResult = {
/* Should the component be returned from render? /
isMounted: Accessor;
/* The item that is currently mounted. /
mountedItem: Accessor;
/* Should the component have its visible styles applied? /
isVisible: Accessor;
/* Is the component either entering or exiting currently? /
isAnimating: Accessor;
/* Is the component entering currently? /
isEntering: Accessor;
/* Is the component exiting currently? /
isExiting: Accessor;
};
`Demo
Demo can be seen here.
Changelog
See CHANGELOG.md
Related
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