Fix review points

- Fix headers hierarchy
- Improve accessibility:
 	- set mouse pointer
	- make rows focusable
	- open on key press
	- add tooltip with "title"
	- add role and aria attributes
- Rename `ParsedLog` to `ParsedLogLine`
- Add docs to `ReversedFileReader`'s implementation of `Iterator`'s methods
- Add docs to `ParsedLogIterator`'s implementation of `Iterator`'s methods
- Remove unnecessary comment
- Add more test for parsing log lines and fix some edge cases
- Fix function name in snake-case to camelCase
- Remove `DIRECTORY_SEPARATOR`

view/theme/frio/css/style.css

@@ -98,6 +98,13 @@ details summary {
 	display: list-item;
 }
 
+/**
+ * clickable table rows
+ */
+.table > tbody > td[role="button"] {
+	cursor: pointer;
+}
+
 /**
  * mobile aside
  */

view/theme/frio/js/module/admin/logs/view.js

@@ -21,6 +21,12 @@ $(function(){
 	$(".log-event").on("click", function(ev) {
 		show_details_for_element(ev.currentTarget);
 	});
+	$(".log-event").on("keydown", function(ev) {
+		if (ev.keyCode == 13 || ev.keyCode == 32) {
+			show_details_for_element(ev.currentTarget);
+		}
+	});
+
 
 	$("[data-previous").on("click", function(ev){ 
 		var currentid = document.getElementById("logdetail").dataset.rowId;
@@ -37,9 +43,15 @@ $(function(){
 	});
 
 
-	function show_details_for_element(element) {
-		var $modal = $("#logdetail");
+	const $modal = $("#logdetail");
 
+	$modal.on("hidden.bs.modal", function(ev){
+		document
+			.querySelectorAll('[aria-expanded="true"]')
+			.forEach(elm => elm.setAttribute("aria-expanded", false))
+	});
+
+	function show_details_for_element(element) {
 		$modal[0].dataset.rowId = element.id;
 
 		var tr = $modal.find(".main-data tbody tr")[0];
@@ -64,6 +76,7 @@ $(function(){
 		$("[data-next").prop("disabled", $(element).next().length == 0);
 		
 		$modal.modal({})
+		element.setAttribute("aria-expanded", true);
 	}
 
 	function recursive_details(s, data, lev=0) {

view/theme/frio/templates/admin/logs/view.tpl

@@ -1,7 +1,7 @@
 <div id="adminpage">
 	<h1>{{$title}} - {{$page}}</h1>
 
-	<h3>{{$logname}}</h3>
+	<h2>{{$logname}}</h2>
 	{{if $error }}
 		<div id="admin-error-message-wrapper" class="alert alert-warning">
 			<p>{{$error nofilter}}</p>
@@ -59,7 +59,9 @@
 			</thead>
 			<tbody>
 				{{foreach $data as $row}}
-				<tr id="ev-{{$row->id}}" class="log-event"
+				<tr id="ev-{{$row->id}}" class="log-event" 
+					role="button" tabIndex="0"
+					aria-label="View details" aria-haspopup="true" aria-expanded="false"
 					data-data="{{$row->data}}" data-source="{{$row->source}}">
 					<td>{{$row->date}}</td>
 					<td class="