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![Dan Brown](/assets/img/avatar_default.png)
Better links the core selector component to the popup version, with new public methods for direct controlling. For #3528
190 lines
5.4 KiB
JavaScript
190 lines
5.4 KiB
JavaScript
import {onChildEvent} from "../services/dom";
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/**
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* Entity Selector
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* @extends {Component}
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*/
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class EntitySelector {
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setup() {
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this.elem = this.$el;
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this.entityTypes = this.$opts.entityTypes || 'page,book,chapter';
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this.entityPermission = this.$opts.entityPermission || 'view';
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this.input = this.$refs.input;
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this.searchInput = this.$refs.search;
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this.loading = this.$refs.loading;
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this.resultsContainer = this.$refs.results;
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this.addButton = this.$refs.add;
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this.search = '';
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this.lastClick = 0;
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this.selectedItemData = null;
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this.setupListeners();
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this.showLoading();
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this.initialLoad();
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}
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setupListeners() {
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this.elem.addEventListener('click', this.onClick.bind(this));
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let lastSearch = 0;
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this.searchInput.addEventListener('input', event => {
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lastSearch = Date.now();
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this.showLoading();
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setTimeout(() => {
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if (Date.now() - lastSearch < 199) return;
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this.searchEntities(this.searchInput.value);
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}, 200);
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});
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this.searchInput.addEventListener('keydown', event => {
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if (event.keyCode === 13) event.preventDefault();
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});
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if (this.addButton) {
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this.addButton.addEventListener('click', event => {
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if (this.selectedItemData) {
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this.confirmSelection(this.selectedItemData);
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this.unselectAll();
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}
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});
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}
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// Keyboard navigation
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onChildEvent(this.$el, '[data-entity-type]', 'keydown', (e, el) => {
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if (e.ctrlKey && e.code === 'Enter') {
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const form = this.$el.closest('form');
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if (form) {
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form.submit();
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e.preventDefault();
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return;
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}
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}
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if (e.code === 'ArrowDown') {
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this.focusAdjacent(true);
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}
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if (e.code === 'ArrowUp') {
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this.focusAdjacent(false);
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}
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});
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this.searchInput.addEventListener('keydown', e => {
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if (e.code === 'ArrowDown') {
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this.focusAdjacent(true);
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}
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})
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}
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focusAdjacent(forward = true) {
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const items = Array.from(this.resultsContainer.querySelectorAll('[data-entity-type]'));
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const selectedIndex = items.indexOf(document.activeElement);
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const newItem = items[selectedIndex+ (forward ? 1 : -1)] || items[0];
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if (newItem) {
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newItem.focus();
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}
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}
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reset() {
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this.searchInput.value = '';
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this.showLoading();
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this.initialLoad();
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}
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focusSearch() {
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this.searchInput.focus();
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}
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showLoading() {
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this.loading.style.display = 'block';
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this.resultsContainer.style.display = 'none';
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}
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hideLoading() {
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this.loading.style.display = 'none';
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this.resultsContainer.style.display = 'block';
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}
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initialLoad() {
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window.$http.get(this.searchUrl()).then(resp => {
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this.resultsContainer.innerHTML = resp.data;
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this.hideLoading();
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})
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}
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searchUrl() {
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return `/ajax/search/entities?types=${encodeURIComponent(this.entityTypes)}&permission=${encodeURIComponent(this.entityPermission)}`;
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}
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searchEntities(searchTerm) {
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this.input.value = '';
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const url = `${this.searchUrl()}&term=${encodeURIComponent(searchTerm)}`;
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window.$http.get(url).then(resp => {
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this.resultsContainer.innerHTML = resp.data;
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this.hideLoading();
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});
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}
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isDoubleClick() {
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const now = Date.now();
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const answer = now - this.lastClick < 300;
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this.lastClick = now;
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return answer;
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}
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onClick(event) {
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const listItem = event.target.closest('[data-entity-type]');
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if (listItem) {
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event.preventDefault();
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event.stopPropagation();
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this.selectItem(listItem);
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}
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}
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selectItem(item) {
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const isDblClick = this.isDoubleClick();
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const type = item.getAttribute('data-entity-type');
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const id = item.getAttribute('data-entity-id');
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const isSelected = (!item.classList.contains('selected') || isDblClick);
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this.unselectAll();
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this.input.value = isSelected ? `${type}:${id}` : '';
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const link = item.getAttribute('href');
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const name = item.querySelector('.entity-list-item-name').textContent;
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const data = {id: Number(id), name: name, link: link};
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if (isSelected) {
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item.classList.add('selected');
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this.selectedItemData = data;
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} else {
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window.$events.emit('entity-select-change', null)
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}
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if (!isDblClick && !isSelected) return;
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if (isDblClick) {
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this.confirmSelection(data);
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}
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if (isSelected) {
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window.$events.emit('entity-select-change', data)
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}
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}
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confirmSelection(data) {
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window.$events.emit('entity-select-confirm', data);
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}
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unselectAll() {
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const selected = this.elem.querySelectorAll('.selected');
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for (const selectedElem of selected) {
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selectedElem.classList.remove('selected', 'primary-background');
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}
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this.selectedItemData = null;
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}
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}
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export default EntitySelector; |