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a11y: focus modals and esc closes err modal #310

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Merged
merged 12 commits into from
Dec 18, 2019
Merged

a11y: focus modals and esc closes err modal #310

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e370678
a11y: esc closes err modal
microbit-mark Nov 27, 2019
7adb6f9
a11y: esc closes err modal
microbit-mark Nov 27, 2019
2cc670c
focus modals by div id
microbit-mark Dec 10, 2019
83f93ec
Merge branch 'a11y-error-modals' of github.com:microbit-mark/PythonEd…
microbit-mark Dec 10, 2019
7ebd279
fixes
microbit-mark Dec 10, 2019
7dd60fd
fix event listener
microbit-mark Dec 11, 2019
129bfa6
a11y: update event listeners
microbit-mark Dec 16, 2019
1da4f4e
Move flash modal esc key listener to top of function.
microbit-carlos Dec 17, 2019
decb749
Move focusModal() to the end webusbErrorHandle when content is ready.r
microbit-carlos Dec 17, 2019
9dd0f09
Move modalMsgClose() inside modalMsg().
microbit-carlos Dec 17, 2019
a7b4406
A11y: Fix editor stealing focus when error modal appears.
microbit-carlos Dec 17, 2019
81c6d2e
A11y: Fix issue tabbing in a modal without focusable elements.
microbit-carlos Dec 17, 2019
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10 changes: 5 additions & 5 deletions editor.html
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Original file line number Diff line number Diff line change
Expand Up @@ -82,7 +82,7 @@
UPY_VERSION = "1.0.1";
</script>
<script id="files-template" type="x-tmpl-mustache">
<div tabindex="-1" role="dialog" aria-label="load/save modal" aria-modal="true" class="modal-div">
<div id="files-modal" tabindex="-1" role="dialog" aria-label="load/save modal" aria-modal="true" class="modal-div">
<h2 class="modal-title"><i class="fa fa-upload"></i> <strong>{{ load-title }}</strong></h2>
<div class="load-drag-target" id="load-drag-target">
<input type="file" style="display: none" name="load-form-file-upload" id="file-upload-input">
Expand Down Expand Up @@ -140,7 +140,7 @@ <h2 class="modal-title"><i class="fa fa-download"></i> <strong>{{ files-title }}
</div>
</script>
<script id="snippet-template" type="x-tmpl-mustache">
<div tabindex="-1" role="dialog" aria-label="snippets modal" aria-modal="true" class="modal-div">
<div id="snippet-modal" tabindex="-1" role="dialog" aria-label="snippets modal" aria-modal="true" class="modal-div">
<h2><i class="fa fa-cogs"></i> <strong>{{ title }}</strong></h2>
<p>{{ description }}</p>
<p>{{ instructions }}</p>
Expand Down Expand Up @@ -395,7 +395,7 @@ <h2><i class="fa fa-unlock-alt"></i> <strong>{{ title }}</strong></h2>
<div id="editor" class="flex3" tabindex="-1"></div>
</div>
<div id="flashing-overlay-container" class="modal-overlay-container">
<div id="flashing-overlay" class="modal-overlay" tabindex="-1" role="dialog" aria-labelledby="flashing-overlay" aria-modal="true">
<div id="flashing-overlay" class="modal-overlay modal-div" tabindex="-1" role="dialog" aria-labelledby="flashing-overlay" aria-modal="true">
<div id="flashing-info">
<h2 id="flashing-text">Flashing micro:bit</h2>
<div id="webusb-flashing-loader"></div>
Expand All @@ -407,8 +407,8 @@ <h2 id="flashing-text">Flashing micro:bit</h2>
</div>
</div>
<div id="modal-msg-overlay-container" class="modal-overlay-container modal-msg-overlay-container">
<div id="modal-msg-overlay" class="modal-overlay" tabindex="-1" role="dialog" aria-labelledby="flashing-overlay" aria-modal="true">
<a class="vex-close modal-close" onclick="$('#modal-msg-overlay-container').hide()"></a>
<div id="modal-msg-overlay" class="modal-overlay modal-div" tabindex="-1" role="dialog" aria-labelledby="modal-msg-overlay" aria-modal="true">
<a class="vex-close modal-close" onclick="modalMsgClose()"></a>
<div id="modal-msg-text">
<h2 id="modal-msg-title"></h2>
<div id="modal-msg-content"></div>
Expand Down
28 changes: 23 additions & 5 deletions python-main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -919,9 +919,9 @@ function web_editor(config) {
}

// Trap focus in modal and pass focus to first actionable element
function focusModal() {
function focusModal(modalId) {
document.querySelector('body > :not(.vex)').setAttribute('aria-hidden', true);
var dialog = document.querySelector('.modal-div');
var dialog = document.querySelector(modalId);
var focusableEls = dialog.querySelectorAll('a[href]:not([disabled]), button:not([disabled]), textarea:not([disabled]), input[type="text"]:not([disabled]), input[type="radio"]:not([disabled]), input[type="checkbox"]:not([disabled]), select:not([disabled])');
$(focusableEls).each(function() {
$(this).attr('tabindex', '0');
Expand Down Expand Up @@ -987,7 +987,7 @@ function web_editor(config) {
vex.open({
content: Mustache.render(template, loadStrings),
afterOpen: function(vexContent) {
focusModal();
focusModal("#files-modal");
$("#show-files").attr("title", loadStrings["show-files"] +" (" + micropythonFs.ls().length + ")");
document.getElementById("show-files").innerHTML = loadStrings["show-files"] + " (" + micropythonFs.ls().length + ") <i class='fa fa-caret-down'>";
$('#save-hex').click(function() {
Expand Down Expand Up @@ -1173,7 +1173,7 @@ function web_editor(config) {
vex.open({
content: Mustache.render(template, context),
afterOpen: function(vexContent) {
focusModal();
focusModal("#snippet-modal");
$(vexContent).find('.snippet-selection').click(function(e){
var snippet_name = $(this).find('.snippet-name').text();
EDITOR.triggerSnippet(snippet_name);
Expand Down Expand Up @@ -1327,6 +1327,7 @@ function web_editor(config) {
// Display error handler modal
$("#flashing-overlay-container").css("display", "flex");
$("#flashing-info").addClass('hidden');
focusModal("#flashing-overlay");

// Log error to console for feedback
console.log("An error occured whilst attempting to use WebUSB.");
Expand Down Expand Up @@ -1460,6 +1461,12 @@ function web_editor(config) {
};

document.dispatchEvent(new CustomEvent('webusb', { detail: details }));
// If escape key is pressed close modal
$(document).keydown(function(e) {
if (e.which == 27) {
flashErrorClose();
}
});
}

function doDisconnect() {
Expand Down Expand Up @@ -1730,6 +1737,12 @@ function web_editor(config) {
});
}
$("#modal-msg-links").html((modalLinks).join(' | '));
focusModal("#modal-msg-overlay");
$(document).keydown(function(e) {
if (e.which == 27) {
modalMsgClose();
}
});
}

function formatMenuContainer(parentButtonId, containerId) {
Expand Down Expand Up @@ -1936,9 +1949,14 @@ function web_editor(config) {
}

/*
* Function to close flash error box
* Functions to close error modals
*/
function flashErrorClose() {
$('#flashing-overlay-error').html("");
$('#flashing-overlay-container').hide();
$(document).off("keydown");
}
function modalMsgClose() {
$('#modal-msg-overlay-container').hide()
$(document).off("keydown");
}