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dozzle/assets/components/ScrollableView.vue
2024-01-03 23:16:05 +00:00

94 lines
2.6 KiB
Vue

<template>
<section :class="{ 'h-screen min-h-0': scrollable }" class="flex flex-col">
<header
v-if="$slots.header"
class="sticky top-[70px] z-[2] border-b border-base-content/10 bg-base py-2 shadow-[1px_1px_2px_0_rgb(0,0,0,0.05)] md:top-0"
>
<slot name="header"></slot>
</header>
<main :data-scrolling="scrollable ? true : undefined" class="snap-y overflow-auto">
<div class="invisible mr-28 text-right md:visible" v-show="paused">
<scroll-progress :indeterminate="loading" :auto-hide="!loading" class="!fixed top-16 z-10" />
</div>
<div ref="scrollableContent">
<slot :setLoading="setLoading"></slot>
</div>
<div ref="scrollObserver" class="h-px"></div>
</main>
<div class="mr-16 text-right">
<transition name="fade">
<button
class="btn btn-primary fixed bottom-8 rounded p-3 text-primary-content shadow transition-colors"
:class="hasMore ? 'btn-secondary animate-bounce-fast text-secondary-content' : ''"
@click="scrollToBottom()"
v-show="paused"
>
<mdi:chevron-double-down />
</button>
</transition>
</div>
</section>
</template>
<script lang="ts" setup>
const { scrollable = false } = defineProps<{ scrollable?: boolean }>();
let paused = $ref(false);
let hasMore = $ref(false);
let loading = $ref(false);
const scrollObserver = ref<HTMLElement>();
const scrollableContent = ref<HTMLElement>();
provide("scrollingPaused", $$(paused));
const mutationObserver = new MutationObserver((e) => {
if (!paused) {
scrollToBottom();
} else {
const record = e[e.length - 1];
const children = (record.target as HTMLElement).children;
if (children[children.length - 1] == record.addedNodes[record.addedNodes.length - 1]) {
hasMore = true;
}
}
});
const intersectionObserver = new IntersectionObserver((entries) => (paused = entries[0].intersectionRatio == 0), {
threshold: [0, 1],
rootMargin: "80px 0px",
});
onMounted(() => {
mutationObserver.observe(scrollableContent.value!, { childList: true, subtree: true });
intersectionObserver.observe(scrollObserver.value!);
});
function scrollToBottom(behavior: "auto" | "smooth" = "auto") {
scrollObserver.value?.scrollIntoView({ behavior });
hasMore = false;
}
function setLoading(value: boolean) {
loading = value;
}
</script>
<style scoped lang="postcss">
.fade-enter-active,
.fade-leave-active {
@apply transition-opacity;
}
.fade-enter-from,
.fade-leave-to {
@apply opacity-0;
}
</style>
<style>
.splitpanes__pane {
overflow: unset !important;
}
</style>