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