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388 lines
13 KiB
JavaScript
388 lines
13 KiB
JavaScript
import Sortable, {MultiDrag} from 'sortablejs';
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import {Component} from './component';
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import {htmlToDom} from '../services/dom';
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// Auto sort control
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const sortOperations = {
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name(a, b) {
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const aName = a.getAttribute('data-name').trim().toLowerCase();
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const bName = b.getAttribute('data-name').trim().toLowerCase();
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return aName.localeCompare(bName);
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},
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created(a, b) {
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const aTime = Number(a.getAttribute('data-created'));
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const bTime = Number(b.getAttribute('data-created'));
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return bTime - aTime;
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},
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updated(a, b) {
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const aTime = Number(a.getAttribute('data-updated'));
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const bTime = Number(b.getAttribute('data-updated'));
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return bTime - aTime;
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},
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chaptersFirst(a, b) {
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const aType = a.getAttribute('data-type');
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const bType = b.getAttribute('data-type');
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if (aType === bType) {
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return 0;
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}
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return (aType === 'chapter' ? -1 : 1);
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},
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chaptersLast(a, b) {
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const aType = a.getAttribute('data-type');
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const bType = b.getAttribute('data-type');
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if (aType === bType) {
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return 0;
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}
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return (aType === 'chapter' ? 1 : -1);
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},
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};
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/**
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* The available move actions.
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* The active function indicates if the action is possible for the given item.
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* The run function performs the move.
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* @type {{up: {active(Element, ?Element, Element): boolean, run(Element, ?Element, Element)}}}
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*/
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const moveActions = {
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up: {
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active(elem, parent) {
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return !(elem.previousElementSibling === null && !parent);
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},
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run(elem, parent) {
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const newSibling = elem.previousElementSibling || parent;
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newSibling.insertAdjacentElement('beforebegin', elem);
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},
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},
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down: {
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active(elem, parent) {
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return !(elem.nextElementSibling === null && !parent);
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},
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run(elem, parent) {
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const newSibling = elem.nextElementSibling || parent;
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newSibling.insertAdjacentElement('afterend', elem);
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},
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},
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next_book: {
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active(elem, parent, book) {
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return book.nextElementSibling !== null;
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},
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run(elem, parent, book) {
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const newList = book.nextElementSibling.querySelector('ul');
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newList.prepend(elem);
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},
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},
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prev_book: {
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active(elem, parent, book) {
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return book.previousElementSibling !== null;
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},
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run(elem, parent, book) {
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const newList = book.previousElementSibling.querySelector('ul');
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newList.appendChild(elem);
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},
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},
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next_chapter: {
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active(elem, parent) {
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return elem.dataset.type === 'page' && this.getNextChapter(elem, parent);
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},
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run(elem, parent) {
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const nextChapter = this.getNextChapter(elem, parent);
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nextChapter.querySelector('ul').prepend(elem);
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},
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getNextChapter(elem, parent) {
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const topLevel = (parent || elem);
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const topItems = Array.from(topLevel.parentElement.children);
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const index = topItems.indexOf(topLevel);
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return topItems.slice(index + 1).find(item => item.dataset.type === 'chapter');
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},
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},
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prev_chapter: {
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active(elem, parent) {
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return elem.dataset.type === 'page' && this.getPrevChapter(elem, parent);
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},
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run(elem, parent) {
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const prevChapter = this.getPrevChapter(elem, parent);
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prevChapter.querySelector('ul').append(elem);
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},
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getPrevChapter(elem, parent) {
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const topLevel = (parent || elem);
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const topItems = Array.from(topLevel.parentElement.children);
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const index = topItems.indexOf(topLevel);
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return topItems.slice(0, index).reverse().find(item => item.dataset.type === 'chapter');
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},
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},
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book_end: {
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active(elem, parent) {
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return parent || (parent === null && elem.nextElementSibling);
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},
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run(elem, parent, book) {
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book.querySelector('ul').append(elem);
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},
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},
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book_start: {
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active(elem, parent) {
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return parent || (parent === null && elem.previousElementSibling);
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},
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run(elem, parent, book) {
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book.querySelector('ul').prepend(elem);
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},
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},
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before_chapter: {
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active(elem, parent) {
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return parent;
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},
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run(elem, parent) {
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parent.insertAdjacentElement('beforebegin', elem);
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},
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},
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after_chapter: {
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active(elem, parent) {
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return parent;
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},
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run(elem, parent) {
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parent.insertAdjacentElement('afterend', elem);
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},
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},
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};
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export class BookSort extends Component {
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setup() {
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this.container = this.$el;
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this.sortContainer = this.$refs.sortContainer;
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this.input = this.$refs.input;
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Sortable.mount(new MultiDrag());
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const initialSortBox = this.container.querySelector('.sort-box');
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this.setupBookSortable(initialSortBox);
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this.setupSortPresets();
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this.setupMoveActions();
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window.$events.listen('entity-select-change', this.bookSelect.bind(this));
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}
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/**
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* Set up the handlers for the item-level move buttons.
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*/
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setupMoveActions() {
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// Handle move button click
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this.container.addEventListener('click', event => {
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if (event.target.matches('[data-move]')) {
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const action = event.target.getAttribute('data-move');
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const sortItem = event.target.closest('[data-id]');
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this.runSortAction(sortItem, action);
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}
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});
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this.updateMoveActionStateForAll();
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}
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/**
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* Set up the handlers for the preset sort type buttons.
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*/
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setupSortPresets() {
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let lastSort = '';
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let reverse = false;
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const reversibleTypes = ['name', 'created', 'updated'];
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this.sortContainer.addEventListener('click', event => {
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const sortButton = event.target.closest('.sort-box-options [data-sort]');
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if (!sortButton) return;
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event.preventDefault();
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const sortLists = sortButton.closest('.sort-box').querySelectorAll('ul');
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const sort = sortButton.getAttribute('data-sort');
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reverse = (lastSort === sort) ? !reverse : false;
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let sortFunction = sortOperations[sort];
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if (reverse && reversibleTypes.includes(sort)) {
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sortFunction = function reverseSortOperation(a, b) {
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return 0 - sortOperations[sort](a, b);
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};
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}
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for (const list of sortLists) {
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const directItems = Array.from(list.children).filter(child => child.matches('li'));
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directItems.sort(sortFunction).forEach(sortedItem => {
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list.appendChild(sortedItem);
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});
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}
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lastSort = sort;
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this.updateMapInput();
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});
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}
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/**
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* Handle book selection from the entity selector.
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* @param {Object} entityInfo
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*/
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bookSelect(entityInfo) {
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const alreadyAdded = this.container.querySelector(`[data-type="book"][data-id="${entityInfo.id}"]`) !== null;
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if (alreadyAdded) return;
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const entitySortItemUrl = `${entityInfo.link}/sort-item`;
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window.$http.get(entitySortItemUrl).then(resp => {
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const newBookContainer = htmlToDom(resp.data);
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this.sortContainer.append(newBookContainer);
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this.setupBookSortable(newBookContainer);
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this.updateMoveActionStateForAll();
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const summary = newBookContainer.querySelector('summary');
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summary.focus();
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});
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}
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/**
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* Set up the given book container element to have sortable items.
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* @param {Element} bookContainer
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*/
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setupBookSortable(bookContainer) {
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const sortElems = Array.from(bookContainer.querySelectorAll('.sort-list, .sortable-page-sublist'));
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const bookGroupConfig = {
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name: 'book',
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pull: ['book', 'chapter'],
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put: ['book', 'chapter'],
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};
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const chapterGroupConfig = {
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name: 'chapter',
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pull: ['book', 'chapter'],
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put(toList, fromList, draggedElem) {
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return draggedElem.getAttribute('data-type') === 'page';
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},
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};
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for (const sortElem of sortElems) {
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Sortable.create(sortElem, {
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group: sortElem.classList.contains('sort-list') ? bookGroupConfig : chapterGroupConfig,
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animation: 150,
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fallbackOnBody: true,
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swapThreshold: 0.65,
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onSort: () => {
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this.ensureNoNestedChapters();
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this.updateMapInput();
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this.updateMoveActionStateForAll();
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},
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dragClass: 'bg-white',
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ghostClass: 'primary-background-light',
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multiDrag: true,
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multiDragKey: 'Control',
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selectedClass: 'sortable-selected',
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});
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}
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}
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/**
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* Handle nested chapters by moving them to the parent book.
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* Needed since sorting with multi-sort only checks group rules based on the active item,
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* not all in group, therefore need to manually check after a sort.
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* Must be done before updating the map input.
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*/
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ensureNoNestedChapters() {
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const nestedChapters = this.container.querySelectorAll('[data-type="chapter"] [data-type="chapter"]');
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for (const chapter of nestedChapters) {
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const parentChapter = chapter.parentElement.closest('[data-type="chapter"]');
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parentChapter.insertAdjacentElement('afterend', chapter);
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}
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}
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/**
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* Update the input with our sort data.
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*/
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updateMapInput() {
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const pageMap = this.buildEntityMap();
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this.input.value = JSON.stringify(pageMap);
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}
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/**
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* Build up a mapping of entities with their ordering and nesting.
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* @returns {Array}
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*/
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buildEntityMap() {
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const entityMap = [];
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const lists = this.container.querySelectorAll('.sort-list');
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for (const list of lists) {
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const bookId = list.closest('[data-type="book"]').getAttribute('data-id');
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const directChildren = Array.from(list.children)
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.filter(elem => elem.matches('[data-type="page"], [data-type="chapter"]'));
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for (let i = 0; i < directChildren.length; i++) {
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this.addBookChildToMap(directChildren[i], i, bookId, entityMap);
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}
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}
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return entityMap;
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}
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/**
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* Parse a sort item and add it to a data-map array.
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* Parses sub0items if existing also.
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* @param {Element} childElem
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* @param {Number} index
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* @param {Number} bookId
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* @param {Array} entityMap
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*/
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addBookChildToMap(childElem, index, bookId, entityMap) {
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const type = childElem.getAttribute('data-type');
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const parentChapter = false;
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const childId = childElem.getAttribute('data-id');
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entityMap.push({
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id: childId,
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sort: index,
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parentChapter,
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type,
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book: bookId,
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});
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const subPages = childElem.querySelectorAll('[data-type="page"]');
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for (let i = 0; i < subPages.length; i++) {
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entityMap.push({
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id: subPages[i].getAttribute('data-id'),
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sort: i,
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parentChapter: childId,
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type: 'page',
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book: bookId,
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});
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}
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}
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/**
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* Run the given sort action up the provided sort item.
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* @param {Element} item
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* @param {String} action
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*/
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runSortAction(item, action) {
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const parentItem = item.parentElement.closest('li[data-id]');
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const parentBook = item.parentElement.closest('[data-type="book"]');
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moveActions[action].run(item, parentItem, parentBook);
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this.updateMapInput();
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this.updateMoveActionStateForAll();
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item.scrollIntoView({behavior: 'smooth', block: 'nearest'});
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item.focus();
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}
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/**
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* Update the state of the available move actions on this item.
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* @param {Element} item
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*/
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updateMoveActionState(item) {
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const parentItem = item.parentElement.closest('li[data-id]');
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const parentBook = item.parentElement.closest('[data-type="book"]');
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for (const [action, functions] of Object.entries(moveActions)) {
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const moveButton = item.querySelector(`[data-move="${action}"]`);
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moveButton.disabled = !functions.active(item, parentItem, parentBook);
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}
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}
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updateMoveActionStateForAll() {
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const items = this.container.querySelectorAll('[data-type="chapter"],[data-type="page"]');
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for (const item of items) {
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this.updateMoveActionState(item);
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}
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}
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}
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