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import type { Sortable } from '@vben-core/composables';
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import type { EmitType } from '@vben-core/typings';
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import type { TabsProps } from './types';
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import { useIsMobile, useSortable } from '@vben-core/composables';
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import { nextTick, onMounted, onUnmounted, ref, watch } from 'vue';
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// 可能会找到拖拽的子元素，这里需要确保拖拽的dom时tab元素
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function findParentElement(element: HTMLElement) {
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const parentCls = 'group';
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return element.classList.contains(parentCls)
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? element
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: element.closest(`.${parentCls}`);
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}
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export function useTabsDrag(props: TabsProps, emit: EmitType) {
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const sortableInstance = ref<null | Sortable>(null);
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async function initTabsSortable() {
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await nextTick();
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const el = document.querySelectorAll(
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`.${props.contentClass}`,
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)?.[0] as HTMLElement;
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if (!el) {
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console.warn('Element not found for sortable initialization');
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return;
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}
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const resetElState = async () => {
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el.style.cursor = 'default';
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// el.classList.remove('dragging');
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el.querySelector('.draggable')?.classList.remove('dragging');
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};
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const { initializeSortable } = useSortable(el, {
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filter: (_evt, target: HTMLElement) => {
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const parent = findParentElement(target);
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const draggable = parent?.classList.contains('draggable');
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return !draggable || !props.draggable;
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},
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onEnd(evt) {
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const { newIndex, oldIndex } = evt;
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// const fromElement = evt.item;
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const { srcElement } = (evt as any).originalEvent;
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if (!srcElement) {
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resetElState();
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return;
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}
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const srcParent = findParentElement(srcElement);
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if (!srcParent) {
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resetElState();
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return;
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}
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if (!srcParent.classList.contains('draggable')) {
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resetElState();
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return;
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}
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if (
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oldIndex !== undefined &&
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newIndex !== undefined &&
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!Number.isNaN(oldIndex) &&
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!Number.isNaN(newIndex) &&
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oldIndex !== newIndex
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) {
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emit('sortTabs', oldIndex, newIndex);
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}
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resetElState();
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},
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onMove(evt) {
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const parent = findParentElement(evt.related);
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if (parent?.classList.contains('draggable') && props.draggable) {
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const isCurrentAffix = evt.dragged.classList.contains('affix-tab');
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const isRelatedAffix = evt.related.classList.contains('affix-tab');
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// 不允许在固定的tab和非固定的tab之间互相拖拽
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return isCurrentAffix === isRelatedAffix;
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} else {
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return false;
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}
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},
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onStart: () => {
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el.style.cursor = 'grabbing';
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el.querySelector('.draggable')?.classList.add('dragging');
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// el.classList.add('dragging');
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},
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});
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sortableInstance.value = await initializeSortable();
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}
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async function init() {
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const { isMobile } = useIsMobile();
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// 移动端下tab不需要拖拽
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if (isMobile.value) {
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return;
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}
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await nextTick();
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initTabsSortable();
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}
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onMounted(init);
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watch(
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() => props.styleType,
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() => {
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sortableInstance.value?.destroy();
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init();
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},
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);
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onUnmounted(() => {
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sortableInstance.value?.destroy();
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});
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}
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