113 lines
3 KiB
JavaScript
113 lines
3 KiB
JavaScript
/* eslint-disable */
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import { ACTIVE_CLASS } from './constants';
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const Keyboard = function () {
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var currentKey;
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var currentFocus;
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var isUpArrow = false;
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var isDownArrow = false;
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var removeHighlight = function removeHighlight(list) {
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var itemElements = Array.prototype.slice.call(list.list.querySelectorAll('li:not(.divider)'), 0);
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var listItems = [];
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for(var i = 0; i < itemElements.length; i++) {
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var listItem = itemElements[i];
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listItem.classList.remove(ACTIVE_CLASS);
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if (listItem.style.display !== 'none') {
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listItems.push(listItem);
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}
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}
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return listItems;
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};
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var setMenuForArrows = function setMenuForArrows(list) {
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var listItems = removeHighlight(list);
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if(list.currentIndex>0){
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if(!listItems[list.currentIndex-1]){
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list.currentIndex = list.currentIndex-1;
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}
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if (listItems[list.currentIndex-1]) {
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var el = listItems[list.currentIndex-1];
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var filterDropdownEl = el.closest('.filter-dropdown');
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el.classList.add(ACTIVE_CLASS);
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if (filterDropdownEl) {
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var filterDropdownBottom = filterDropdownEl.offsetHeight;
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var elOffsetTop = el.offsetTop - 30;
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if (elOffsetTop > filterDropdownBottom) {
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filterDropdownEl.scrollTop = elOffsetTop - filterDropdownBottom;
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}
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}
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}
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}
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};
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var mousedown = function mousedown(e) {
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var list = e.detail.hook.list;
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removeHighlight(list);
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list.show();
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list.currentIndex = 0;
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isUpArrow = false;
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isDownArrow = false;
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};
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var selectItem = function selectItem(list) {
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var listItems = removeHighlight(list);
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var currentItem = listItems[list.currentIndex-1];
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var listEvent = new CustomEvent('click.dl', {
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detail: {
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list: list,
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selected: currentItem,
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data: currentItem.dataset,
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},
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});
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list.list.dispatchEvent(listEvent);
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list.hide();
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}
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var keydown = function keydown(e){
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var typedOn = e.target;
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var list = e.detail.hook.list;
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var currentIndex = list.currentIndex;
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isUpArrow = false;
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isDownArrow = false;
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if(e.detail.which){
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currentKey = e.detail.which;
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if(currentKey === 13){
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selectItem(e.detail.hook.list);
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return;
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}
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if(currentKey === 38) {
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isUpArrow = true;
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}
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if(currentKey === 40) {
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isDownArrow = true;
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}
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} else if(e.detail.key) {
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currentKey = e.detail.key;
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if(currentKey === 'Enter'){
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selectItem(e.detail.hook.list);
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return;
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}
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if(currentKey === 'ArrowUp') {
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isUpArrow = true;
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}
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if(currentKey === 'ArrowDown') {
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isDownArrow = true;
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}
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}
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if(isUpArrow){ currentIndex--; }
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if(isDownArrow){ currentIndex++; }
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if(currentIndex < 0){ currentIndex = 0; }
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list.currentIndex = currentIndex;
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setMenuForArrows(e.detail.hook.list);
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};
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document.addEventListener('mousedown.dl', mousedown);
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document.addEventListener('keydown.dl', keydown);
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};
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export default Keyboard;
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