53 lines
947 B
Vue
53 lines
947 B
Vue
<!--
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SPDX-FileCopyrightText: syuilo and other misskey contributors
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SPDX-License-Identifier: AGPL-3.0-only
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-->
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<template>
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<div ref="rootEl" :class="$style.root">
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<div v-if="!showing" :class="$style.placeholder"></div>
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<slot v-else></slot>
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</div>
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</template>
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<script lang="ts" setup>
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import { nextTick, onMounted, onActivated, onBeforeUnmount, ref, shallowRef } from 'vue';
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const rootEl = shallowRef<HTMLDivElement>();
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const showing = ref(false);
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const observer = new IntersectionObserver(
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(entries) => {
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if (entries.some((entry) => entry.isIntersecting)) {
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showing.value = true;
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}
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},
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);
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onMounted(() => {
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nextTick(() => {
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observer.observe(rootEl.value!);
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});
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});
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onActivated(() => {
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nextTick(() => {
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observer.observe(rootEl.value!);
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});
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});
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onBeforeUnmount(() => {
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observer.disconnect();
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});
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</script>
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<style lang="scss" module>
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.root {
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display: block;
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}
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.placeholder {
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display: block;
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min-height: 150px;
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}
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</style>
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