forked from MapComplete/MapComplete
23 lines
669 B
Svelte
23 lines
669 B
Svelte
<script lang="ts">
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import { UIEventSource } from "../../Logic/UIEventSource";
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import { onDestroy } from "svelte";
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/**
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* For some stupid reason, it is very hard to let {#if} work together with UIEventSources, so we wrap then here
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*/
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export let condition: UIEventSource<boolean>;
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let _c = condition.data;
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onDestroy(condition.addCallback(c => {
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/* Do _not_ abbreviate this as `.addCallback(c => _c = c)`. This is the same as writing `.addCallback(c => {return _c = c})`,
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which will _unregister_ the callback if `c = true`! */
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_c = c;
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return false
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}))
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</script>
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{#if _c}
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<slot></slot>
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{:else}
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<slot name="else"></slot>
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{/if}
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