select multiple files using mouse range and shift key not working with Blazor .Net Core

[benny-adiwijaya]

Hi, I am using elfinder js and using elFinder.Net.Core in server side. But I cant select multiple files using mouse range and shift key. I have problem to try debug it. Where is the specific function to select multiple files using mouse range and shift key so I can debug it?

/**
			 * CWD node itself
			 *
			 * @type JQuery
			 **/
			cwd = $(this)
				.addClass('ui-helper-clearfix elfinder-cwd')
				.attr('unselectable', 'on')
				// fix ui.selectable bugs and add shift+click support 
				.on('click.'+fm.namespace, fileSelector, function(e) {
					var p    = this.id ? $(this) : $(this).parents('[id]:first'),
						tgt  = $(e.target),
						prev,
						next,
						pl,
						nl,
						sib;

					if (selectCheckbox && (tgt.is('input:checkbox.'+clSelChk) || tgt.hasClass('elfinder-cwd-select'))) {
						e.stopPropagation();
						e.preventDefault();
						p.trigger(p.hasClass(clSelected) ? evtUnselect : evtSelect);
						trigger();
						requestAnimationFrame(function() {
							tgt.prop('checked', p.hasClass(clSelected));
						});
						return;
					}

					if (cwd.data('longtap') || tgt.hasClass('elfinder-cwd-nonselect')) {
						e.stopPropagation();
						return;
					}

					if (!curClickId) {
						curClickId = p.attr('id');
						setTimeout(function() {
							curClickId = '';
						}, 500);
					}
					
					if (e.shiftKey) {
						prev = p.prevAll(lastSelect || '.'+clSelected+':first');
						next = p.nextAll(lastSelect || '.'+clSelected+':first');
						pl   = prev.length;
						nl   = next.length;
					}
					if (e.shiftKey && (pl || nl)) {
						sib = pl ? p.prevUntil('#'+prev.attr('id')) : p.nextUntil('#'+next.attr('id'));
						sib = sib.add(p);
						if (!pl) {
							sib  = $(sib.get().reverse());
						}
						sib.trigger(evtSelect);
					} else if (e.ctrlKey || e.metaKey) {
						p.trigger(p.hasClass(clSelected) ? evtUnselect : evtSelect);
					} else {
						if (wrapper.data('touching') && p.hasClass(clSelected)) {
							wrapper.data('touching', null);
							fm.dblclick({file : fm.cwdId2Hash(this.id)});
							return;
						} else {
							unselectAll({ notrigger: true });
							p.trigger(evtSelect);
						}
					}

					trigger();
				})

in "if (e.shiftKey && (pl || nl))" I always get pl = 0 and nl = 0, is there a reason?

[benny-adiwijaya]

turn out its connector / controller issue