BookStack/resources/js/components/book-sort.js

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import Sortable, {MultiDrag} from "sortablejs";
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import {Component} from "./component";
import {htmlToDom} from "../services/dom";
// Auto sort control
const sortOperations = {
name: function(a, b) {
const aName = a.getAttribute('data-name').trim().toLowerCase();
const bName = b.getAttribute('data-name').trim().toLowerCase();
return aName.localeCompare(bName);
},
created: function(a, b) {
const aTime = Number(a.getAttribute('data-created'));
const bTime = Number(b.getAttribute('data-created'));
return bTime - aTime;
},
updated: function(a, b) {
const aTime = Number(a.getAttribute('data-updated'));
const bTime = Number(b.getAttribute('data-updated'));
return bTime - aTime;
},
chaptersFirst: function(a, b) {
const aType = a.getAttribute('data-type');
const bType = b.getAttribute('data-type');
if (aType === bType) {
return 0;
}
return (aType === 'chapter' ? -1 : 1);
},
chaptersLast: function(a, b) {
const aType = a.getAttribute('data-type');
const bType = b.getAttribute('data-type');
if (aType === bType) {
return 0;
}
return (aType === 'chapter' ? 1 : -1);
},
};
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export class BookSort extends Component {
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setup() {
this.container = this.$el;
this.sortContainer = this.$refs.sortContainer;
this.input = this.$refs.input;
Sortable.mount(new MultiDrag());
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const initialSortBox = this.container.querySelector('.sort-box');
this.setupBookSortable(initialSortBox);
this.setupSortPresets();
window.$events.listen('entity-select-confirm', this.bookSelect.bind(this));
}
/**
* Setup the handlers for the preset sort type buttons.
*/
setupSortPresets() {
let lastSort = '';
let reverse = false;
const reversibleTypes = ['name', 'created', 'updated'];
this.sortContainer.addEventListener('click', event => {
const sortButton = event.target.closest('.sort-box-options [data-sort]');
if (!sortButton) return;
event.preventDefault();
const sortLists = sortButton.closest('.sort-box').querySelectorAll('ul');
const sort = sortButton.getAttribute('data-sort');
reverse = (lastSort === sort) ? !reverse : false;
let sortFunction = sortOperations[sort];
if (reverse && reversibleTypes.includes(sort)) {
sortFunction = function(a, b) {
return 0 - sortOperations[sort](a, b)
};
}
for (let list of sortLists) {
const directItems = Array.from(list.children).filter(child => child.matches('li'));
directItems.sort(sortFunction).forEach(sortedItem => {
list.appendChild(sortedItem);
});
}
lastSort = sort;
this.updateMapInput();
});
}
/**
* Handle book selection from the entity selector.
* @param {Object} entityInfo
*/
bookSelect(entityInfo) {
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const alreadyAdded = this.container.querySelector(`[data-type="book"][data-id="${entityInfo.id}"]`) !== null;
if (alreadyAdded) return;
const entitySortItemUrl = entityInfo.link + '/sort-item';
window.$http.get(entitySortItemUrl).then(resp => {
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const newBookContainer = htmlToDom(resp.data);
this.sortContainer.append(newBookContainer);
this.setupBookSortable(newBookContainer);
});
}
/**
* Set up the given book container element to have sortable items.
* @param {Element} bookContainer
*/
setupBookSortable(bookContainer) {
const sortElems = [bookContainer.querySelector('.sort-list')];
sortElems.push(...bookContainer.querySelectorAll('.entity-list-item + ul'));
const bookGroupConfig = {
name: 'book',
pull: ['book', 'chapter'],
put: ['book', 'chapter'],
};
const chapterGroupConfig = {
name: 'chapter',
pull: ['book', 'chapter'],
put: function(toList, fromList, draggedElem) {
return draggedElem.getAttribute('data-type') === 'page';
}
};
for (const sortElem of sortElems) {
Sortable.create(sortElem, {
group: sortElem.classList.contains('sort-list') ? bookGroupConfig : chapterGroupConfig,
animation: 150,
fallbackOnBody: true,
swapThreshold: 0.65,
onSort: this.updateMapInput.bind(this),
dragClass: 'bg-white',
ghostClass: 'primary-background-light',
multiDrag: true,
multiDragKey: 'Control',
selectedClass: 'sortable-selected',
});
}
}
/**
* Update the input with our sort data.
*/
updateMapInput() {
const pageMap = this.buildEntityMap();
this.input.value = JSON.stringify(pageMap);
}
/**
* Build up a mapping of entities with their ordering and nesting.
* @returns {Array}
*/
buildEntityMap() {
const entityMap = [];
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const lists = this.container.querySelectorAll('.sort-list');
for (let list of lists) {
const bookId = list.closest('[data-type="book"]').getAttribute('data-id');
const directChildren = Array.from(list.children)
.filter(elem => elem.matches('[data-type="page"], [data-type="chapter"]'));
for (let i = 0; i < directChildren.length; i++) {
this.addBookChildToMap(directChildren[i], i, bookId, entityMap);
}
}
return entityMap;
}
/**
* Parse a sort item and add it to a data-map array.
* Parses sub0items if existing also.
* @param {Element} childElem
* @param {Number} index
* @param {Number} bookId
* @param {Array} entityMap
*/
addBookChildToMap(childElem, index, bookId, entityMap) {
const type = childElem.getAttribute('data-type');
const parentChapter = false;
const childId = childElem.getAttribute('data-id');
entityMap.push({
id: childId,
sort: index,
parentChapter: parentChapter,
type: type,
book: bookId
});
const subPages = childElem.querySelectorAll('[data-type="page"]');
for (let i = 0; i < subPages.length; i++) {
entityMap.push({
id: subPages[i].getAttribute('data-id'),
sort: i,
parentChapter: childId,
type: 'page',
book: bookId
});
}
}
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}