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<script setup>
import {nextTick, onBeforeUnmount, ref, useTemplateRef, watch} from "vue";
import { createPopper } from '@popperjs/core';
import useDetectOutsideClick from "../composables/useDetectOutsideClick";
import StudipIcon from "./StudipIcon.vue";
import {$gettext} from "../../assets/javascripts/lib/gettext";
defineProps({
title: {
type: String
},
withCloseButton: {
type: Boolean,
default: true
}
});
const isOpen = defineModel({ default: false });
const dropdown = useTemplateRef('dropdown');
const trigger = useTemplateRef('trigger');
const dropdownContent = useTemplateRef('dropdownContent');
const popperInstance = ref(null);
useDetectOutsideClick(dropdown, () => isOpen.value = false);
watch(isOpen, async open => {
if (open) {
await nextTick();
popperInstance.value = createPopper(trigger.value, dropdownContent.value, {
placement: 'bottom-end',
modifiers: [
{
name: 'offset',
options: {
offset: [0, 6]
}
},
{
name: 'preventOverflow',
options: {
padding: 10
}
}
]
});
}
});
onBeforeUnmount(() => {
if (popperInstance.value) {
popperInstance.value.destroy();
popperInstance.value = null;
}
});
</script>
<template>
<div
v-bind="$attrs"
ref="dropdown"
class="dropdown"
aria-haspopup="menu"
:aria-expanded="isOpen"
>
<div ref="trigger">
<slot name="trigger">
</slot>
</div>
<Transition name="fade-down">
<div
v-if="isOpen"
ref="dropdownContent"
class="dropdown__content"
:aria-labelledby="title ? 'dropdown-title' : null"
>
<button
type="button"
v-if="withCloseButton"
@click="isOpen = false"
:title="$gettext('Menü schließen')"
class="dropdown__close-button button-base">
<StudipIcon shape="decline" :size="20" />
</button>
<div v-if="title" class="dropdown__header">
<p id="dropdown-title" class="dropdown__title">
{{ title }}
</p>
</div>
<ul class="dropdown__items" role="menu">
<slot name="items">
</slot>
</ul>
<slot name="content">
</slot>
</div>
</Transition>
</div>
</template>
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