anki/ts/components/ButtonGroupItem.svelte

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<!--
Copyright: Ankitects Pty Ltd and contributors
License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
-->
<script lang="typescript">
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import WithTheming from "components/WithTheming.svelte";
import Detachable from "components/Detachable.svelte";
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import type { ButtonRegistration } from "./buttons";
import { ButtonPosition } from "./buttons";
import { getContext, hasContext } from "svelte";
import { buttonGroupKey } from "./contextKeys";
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export let registration: ButtonRegistration | undefined = undefined;
let detach_: boolean;
let position_: ButtonPosition;
let style: string;
const radius = "calc(var(--toolbar-size) / 7.5)";
$: {
switch (position_) {
case ButtonPosition.Standalone:
style = `--border-left-radius: ${radius}; --border-right-radius: ${radius}; `;
break;
case ButtonPosition.Leftmost:
style = `--border-left-radius: ${radius}; --border-right-radius: 0; `;
break;
case ButtonPosition.Center:
style = "--border-left-radius: 0; --border-right-radius: 0; ";
break;
case ButtonPosition.Rightmost:
style = `--border-left-radius: 0; --border-right-radius: ${radius}; `;
break;
}
}
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if (registration) {
const { detach, position } = registration;
detach.subscribe((value: boolean) => (detach_ = value));
position.subscribe((value: ButtonPosition) => (position_ = value));
} else if (hasContext(buttonGroupKey)) {
const { registerButton } = getContext(buttonGroupKey);
const { detach, position } = registerButton();
detach.subscribe((value: boolean) => (detach_ = value));
position.subscribe((value: ButtonPosition) => (position_ = value));
} else {
detach_ = false;
position_ = ButtonPosition.Standalone;
}
</script>
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<!-- div in WithTheming is necessary to preserve item position -->
<WithTheming {style}>
<Detachable detach={detach_}>
<slot />
</Detachable>
</WithTheming>