Attachment 105698 Details for Bug 22807 – Bug 22807: Add 'Skip to content' option

[patch] Bug 22807: Add 'Skip to content' option

Bug-22807-Add-Skip-to-content-option.patch (text/plain), 3.73 KB, created by Martin Renvoize (ashimema) on 2020-06-10 15:59:34 UTC

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Creator: Martin Renvoize (ashimema)

Created: 2020-06-10 15:59:34 UTC

Size: 3.73 KB

patch

obsolete

>From e336dddbfb7064d73fe44f87b5a34b0b28305d35 Mon Sep 17 00:00:00 2001
>From: Martin Renvoize <martin.renvoize@ptfs-europe.com>
>Date: Tue, 9 Jun 2020 14:10:53 +0100
>Subject: [PATCH] Bug 22807: Add 'Skip to content' option
>
>This patch adds a 'Skip to content' link to the header bar which will
>only appear upon the first use of 'tab' to navigate after any fresh page
>load in the OPAC.
>
>Test plan
>1/ Load any page in the OPAC
>2/ Hit the `tab` key
>3/ Note the new 'Skip to main content' link appears at the top left of
>the screen.
>4/ Hit `Enter` or Click the button
>5/ Note the page scrolls to the area of the page that has the first block
>   containing a .maincontent class.
>6/ Note that the next available focusable element after the first .maincontent
>   block has been given focus.
>7/ Note that the link has been hidden
>---
> .../bootstrap/en/includes/masthead.inc        |  1 +
> koha-tmpl/opac-tmpl/bootstrap/js/global.js    | 46 +++++++++++++++++++
> 2 files changed, 47 insertions(+)
>
>diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/includes/masthead.inc b/koha-tmpl/opac-tmpl/bootstrap/en/includes/masthead.inc
>index 88dd9a9255..8de7ec60a5 100644
>--- a/koha-tmpl/opac-tmpl/bootstrap/en/includes/masthead.inc
>+++ b/koha-tmpl/opac-tmpl/bootstrap/en/includes/masthead.inc
>@@ -12,6 +12,7 @@
>         <div class="navbar navbar-inverse navbar-static-top">
>             <div class="navbar-inner">
>                 <div class="container-fluid">
>+                    <button id="scrolltocontent" class="sr-only sr-only-focusable pull-left nav btn btn-danger" type="button">Skip to main content</button>
>                     <h1 id="logo">
>                         <a class="brand" href="/cgi-bin/koha/opac-main.pl">
>                             [% IF ( LibraryNameTitle ) %]
>diff --git a/koha-tmpl/opac-tmpl/bootstrap/js/global.js b/koha-tmpl/opac-tmpl/bootstrap/js/global.js
>index 76ce7b5cb0..5eb956b700 100644
>--- a/koha-tmpl/opac-tmpl/bootstrap/js/global.js
>+++ b/koha-tmpl/opac-tmpl/bootstrap/js/global.js
>@@ -91,3 +91,49 @@ function confirmModal(message, title, yes_label, no_label, callback) {
>     $("#bootstrap-confirm-box-modal-cancel").text( no_label || 'Cancel' );
>     $("#bootstrap-confirm-box-modal").modal('show');
> }
>+
>+//Add jQuery :focusable selector
>+(function($) {
>+    function visible(element) {
>+        return $.expr.filters.visible(element) && !$(element).parents().addBack().filter(function() {
>+            return $.css(this, 'visibility') === 'hidden';
>+        }).length;
>+    }
>+
>+    function focusable(element, isTabIndexNotNaN) {
>+        var map, mapName, img, nodeName = element.nodeName.toLowerCase();
>+        if ('area' === nodeName) {
>+            map = element.parentNode;
>+            mapName = map.name;
>+            if (!element.href || !mapName || map.nodeName.toLowerCase() !== 'map') {
>+                return false;
>+            }
>+            img = $('img[usemap=#' + mapName + ']')[0];
>+            return !!img && visible(img);
>+        }
>+        return (/input|select|textarea|button|object/.test(nodeName) ?
>+                !element.disabled :
>+                'a' === nodeName ?
>+                element.href || isTabIndexNotNaN :
>+                isTabIndexNotNaN) &&
>+            // the element and all of its ancestors must be visible
>+            visible(element);
>+    }
>+
>+    $.extend($.expr[':'], {
>+        focusable: function(element) {
>+            return focusable(element, !isNaN($.attr(element, 'tabindex')));
>+        }
>+    });
>+})(jQuery);
>+
>+$("#scrolltocontent").click(function() {
>+    var content = $(".maincontent");
>+    if (content.length > 0) {
>+        $('html,body').animate({
>+                scrollTop: content.first().offset().top
>+            },
>+        'slow');
>+        content.first().find(':focusable').eq(0).focus();
>+    }
>+});
>-- 
>2.20.1

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