97 lines
2.6 KiB
Vue
97 lines
2.6 KiB
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">
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<div ref="headerEl">
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<slot name="header"></slot>
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</div>
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<div ref="bodyEl" :data-sticky-container-header-height="headerHeight">
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<slot></slot>
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</div>
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<div ref="footerEl">
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<slot name="footer"></slot>
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</div>
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</div>
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</template>
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<script lang="ts" setup>
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import { onMounted, onUnmounted, provide, inject, Ref, ref, watch, shallowRef } from 'vue';
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import { CURRENT_STICKY_BOTTOM, CURRENT_STICKY_TOP } from '@/const.js';
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const rootEl = shallowRef<HTMLElement>();
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const headerEl = shallowRef<HTMLElement>();
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const footerEl = shallowRef<HTMLElement>();
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const bodyEl = shallowRef<HTMLElement>();
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const headerHeight = ref<string | undefined>();
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const childStickyTop = ref(0);
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const parentStickyTop = inject<Ref<number>>(CURRENT_STICKY_TOP, ref(0));
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provide(CURRENT_STICKY_TOP, childStickyTop);
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const footerHeight = ref<string | undefined>();
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const childStickyBottom = ref(0);
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const parentStickyBottom = inject<Ref<number>>(CURRENT_STICKY_BOTTOM, ref(0));
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provide(CURRENT_STICKY_BOTTOM, childStickyBottom);
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const calc = () => {
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// コンポーネントが表示されてないけどKeepAliveで残ってる場合などは null になる
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if (headerEl.value != null) {
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childStickyTop.value = parentStickyTop.value + headerEl.value.offsetHeight;
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headerHeight.value = headerEl.value.offsetHeight.toString();
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}
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// コンポーネントが表示されてないけどKeepAliveで残ってる場合などは null になる
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if (footerEl.value != null) {
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childStickyBottom.value = parentStickyBottom.value + footerEl.value.offsetHeight;
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footerHeight.value = footerEl.value.offsetHeight.toString();
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}
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};
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const observer = new ResizeObserver(() => {
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window.setTimeout(() => {
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calc();
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}, 100);
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});
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onMounted(() => {
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calc();
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watch([parentStickyTop, parentStickyBottom], calc);
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watch(childStickyTop, () => {
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bodyEl.value.style.setProperty('--stickyTop', `${childStickyTop.value}px`);
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}, {
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immediate: true,
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});
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watch(childStickyBottom, () => {
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bodyEl.value.style.setProperty('--stickyBottom', `${childStickyBottom.value}px`);
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}, {
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immediate: true,
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});
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headerEl.value.style.position = 'sticky';
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headerEl.value.style.top = 'var(--stickyTop, 0)';
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headerEl.value.style.zIndex = '1000';
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footerEl.value.style.position = 'sticky';
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footerEl.value.style.bottom = 'var(--stickyBottom, 0)';
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footerEl.value.style.zIndex = '1000';
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observer.observe(headerEl.value);
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observer.observe(footerEl.value);
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});
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onUnmounted(() => {
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observer.disconnect();
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});
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defineExpose({
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rootEl: rootEl,
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});
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</script>
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