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Backport #30936

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Add role="dialog" in modals via JavaScript
This commit is contained in:
XhmikosR 2020-06-04 10:41:47 +03:00
parent 288b9b82b5
commit 8bc6dcd280
4 changed files with 41 additions and 22 deletions
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2
js/src/modal.js
View File

@ -265,6 +265,7 @@ class Modal {
this._element.style.display = 'block'
this._element.removeAttribute('aria-hidden')
this._element.setAttribute('aria-modal', true)
this._element.setAttribute('role', 'dialog')
if ($(this._dialog).hasClass(CLASS_NAME_SCROLLABLE) && modalBody) {
modalBody.scrollTop = 0
@ -344,6 +345,7 @@ class Modal {
this._element.style.display = 'none'
this._element.setAttribute('aria-hidden', true)
this._element.removeAttribute('aria-modal')
this._element.removeAttribute('role')
this._isTransitioning = false
this._showBackdrop(() => {
$(document.body).removeClass(CLASS_NAME_OPEN)

17
js/tests/unit/modal.js
View File

@ -297,6 +297,23 @@ $(function () {
.bootstrapModal('show')
})
QUnit.test('should add role="dialog" attribute when shown, remove it again when hidden', function (assert) {
assert.expect(3)
var done = assert.async()
$('<div id="modal-test"/>')
.on('shown.bs.modal', function () {
assert.ok($('#modal-test').is('[role]'), 'role attribute added')
assert.strictEqual($('#modal-test').attr('role'), 'dialog', 'correct role="dialog" added')
$(this).bootstrapModal('hide')
})
.on('hidden.bs.modal', function () {
assert.notOk($('#modal-test').is('[role]'), 'role attribute removed')
done()
})
.bootstrapModal('show')
})
QUnit.test('should close reopened modal with [data-dismiss="modal"] click', function (assert) {
assert.expect(2)
var done = assert.async()

8
js/tests/visual/modal.html
View File

@ -34,7 +34,7 @@
<div class="container mt-3">
<h1>Modal <small>Bootstrap Visual Test</small></h1>
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal fade" id="myModal" tabindex="-1" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -121,7 +121,7 @@
</div>
</div>
<div class="modal fade" id="firefoxModal" tabindex="-1" role="dialog" aria-labelledby="firefoxModalLabel" aria-hidden="true">
<div class="modal fade" id="firefoxModal" tabindex="-1" aria-labelledby="firefoxModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -147,7 +147,7 @@
</div>
</div>
<div class="modal fade" id="slowModal" tabindex="-1" role="dialog" aria-labelledby="slowModalLabel" aria-hidden="true" style="transition-duration: 5s;">
<div class="modal fade" id="slowModal" tabindex="-1" aria-labelledby="slowModalLabel" aria-hidden="true" style="transition-duration: 5s;">
<div class="modal-dialog" style="transition-duration: inherit;">
<div class="modal-content">
<div class="modal-header">
@ -194,7 +194,7 @@
Tall body content to force the page to have a scrollbar.
</div>
<button type="button" class="btn btn-secondary btn-lg" data-toggle="modal" data-target="&#x3C;div class=&#x22;modal fade the-bad&#x22; tabindex=&#x22;-1&#x22; role=&#x22;dialog&#x22;&#x3E;&#x3C;div class=&#x22;modal-dialog&#x22; role=&#x22;document&#x22;&#x3E;&#x3C;div class=&#x22;modal-content&#x22;&#x3E;&#x3C;div class=&#x22;modal-header&#x22;&#x3E;&#x3C;button type=&#x22;button&#x22; class=&#x22;close&#x22; data-dismiss=&#x22;modal&#x22; aria-label=&#x22;Close&#x22;&#x3E;&#x3C;span aria-hidden=&#x22;true&#x22;&#x3E;&#x26;times;&#x3C;/span&#x3E;&#x3C;/button&#x3E;&#x3C;h4 class=&#x22;modal-title&#x22;&#x3E;The Bad Modal&#x3C;/h4&#x3E;&#x3C;/div&#x3E;&#x3C;div class=&#x22;modal-body&#x22;&#x3E;This modal&#x27;s HTTML source code is declared inline, inside the data-target attribute of it&#x27;s show-button&#x3C;/div&#x3E;&#x3C;/div&#x3E;&#x3C;/div&#x3E;&#x3C;/div&#x3E;">
<button type="button" class="btn btn-secondary btn-lg" data-toggle="modal" data-target="&#x3C;div class=&#x22;modal fade the-bad&#x22; tabindex=&#x22;-1&#x22;&#x3E;&#x3C;div class=&#x22;modal-dialog&#x22;&#x3E;&#x3C;div class=&#x22;modal-content&#x22;&#x3E;&#x3C;div class=&#x22;modal-header&#x22;&#x3E;&#x3C;button type=&#x22;button&#x22; class=&#x22;close&#x22; data-dismiss=&#x22;modal&#x22; aria-label=&#x22;Close&#x22;&#x3E;&#x3C;span aria-hidden=&#x22;true&#x22;&#x3E;&#x26;times;&#x3C;/span&#x3E;&#x3C;/button&#x3E;&#x3C;h4 class=&#x22;modal-title&#x22;&#x3E;The Bad Modal&#x3C;/h4&#x3E;&#x3C;/div&#x3E;&#x3C;div class=&#x22;modal-body&#x22;&#x3E;This modal&#x27;s HTTML source code is declared inline, inside the data-target attribute of it&#x27;s show-button&#x3C;/div&#x3E;&#x3C;/div&#x3E;&#x3C;/div&#x3E;&#x3C;/div&#x3E;">
Modal with an XSS inside the data-target
</button>

36
site/docs/4.5/components/modal.md
View File

@ -34,7 +34,7 @@ Keep reading for demos and usage guidelines.
Below is a _static_ modal example (meaning its `position` and `display` have been overridden). Included are the modal header, modal body (required for `padding`), and modal footer (optional). We ask that you include modal headers with dismiss actions whenever possible, or provide another explicit dismiss action.
<div class="bd-example bd-example-modal">
<div class="modal" tabindex="-1" role="dialog">
<div class="modal" tabindex="-1">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -56,7 +56,7 @@ Below is a _static_ modal example (meaning its `position` and `display` have bee
</div>
{% highlight html %}
<div class="modal" tabindex="-1" role="dialog">
<div class="modal" tabindex="-1">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -81,7 +81,7 @@ Below is a _static_ modal example (meaning its `position` and `display` have bee
Toggle a working modal demo by clicking the button below. It will slide down and fade in from the top of the page.
<div class="modal fade" id="exampleModalLive" tabindex="-1" role="dialog" aria-labelledby="exampleModalLiveLabel" aria-hidden="true">
<div class="modal fade" id="exampleModalLive" tabindex="-1" aria-labelledby="exampleModalLiveLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -114,7 +114,7 @@ Toggle a working modal demo by clicking the button below. It will slide down and
</button>
<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -139,7 +139,7 @@ Toggle a working modal demo by clicking the button below. It will slide down and
When backdrop is set to static, the modal will not close when clicking outside it. Click the button below to try it.
<div class="modal fade" id="staticBackdropLive" data-backdrop="static" data-keyboard="false" tabindex="-1" role="dialog" aria-labelledby="staticBackdropLiveLabel" aria-hidden="true">
<div class="modal fade" id="staticBackdropLive" data-backdrop="static" data-keyboard="false" tabindex="-1" aria-labelledby="staticBackdropLiveLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -172,7 +172,7 @@ When backdrop is set to static, the modal will not close when clicking outside i
</button>
<!-- Modal -->
<div class="modal fade" id="staticBackdrop" data-backdrop="static" data-keyboard="false" tabindex="-1" role="dialog" aria-labelledby="staticBackdropLabel" aria-hidden="true">
<div class="modal fade" id="staticBackdrop" data-backdrop="static" data-keyboard="false" tabindex="-1" aria-labelledby="staticBackdropLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -198,7 +198,7 @@ When backdrop is set to static, the modal will not close when clicking outside i
When modals become too long for the user's viewport or device, they scroll independent of the page itself. Try the demo below to see what we mean.
<div class="modal fade" id="exampleModalLong" tabindex="-1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
<div class="modal fade" id="exampleModalLong" tabindex="-1" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -243,7 +243,7 @@ When modals become too long for the user's viewport or device, they scroll indep
You can also create a scrollable modal that allows scroll the modal body by adding `.modal-dialog-scrollable` to `.modal-dialog`.
<div class="modal fade" id="exampleModalScrollable" tabindex="-1" role="dialog" aria-labelledby="exampleModalScrollableTitle" aria-hidden="true">
<div class="modal fade" id="exampleModalScrollable" tabindex="-1" aria-labelledby="exampleModalScrollableTitle" aria-hidden="true">
<div class="modal-dialog modal-dialog-scrollable">
<div class="modal-content">
<div class="modal-header">
@ -297,7 +297,7 @@ You can also create a scrollable modal that allows scroll the modal body by addi
Add `.modal-dialog-centered` to `.modal-dialog` to vertically center the modal.
<div class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
<div class="modal fade" id="exampleModalCenter" tabindex="-1" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
<div class="modal-dialog modal-dialog-centered">
<div class="modal-content">
<div class="modal-header">
@ -317,7 +317,7 @@ Add `.modal-dialog-centered` to `.modal-dialog` to vertically center the modal.
</div>
</div>
<div class="modal fade" id="exampleModalCenteredScrollable" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenteredScrollableTitle" aria-hidden="true">
<div class="modal fade" id="exampleModalCenteredScrollable" tabindex="-1" aria-labelledby="exampleModalCenteredScrollableTitle" aria-hidden="true">
<div class="modal-dialog modal-dialog-centered modal-dialog-scrollable">
<div class="modal-content">
<div class="modal-header">
@ -366,7 +366,7 @@ Add `.modal-dialog-centered` to `.modal-dialog` to vertically center the modal.
[Tooltips]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/tooltips/) and [popovers]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/popovers/) can be placed within modals as needed. When modals are closed, any tooltips and popovers within are also automatically dismissed.
<div class="modal fade" id="exampleModalPopovers" tabindex="-1" role="dialog" aria-labelledby="exampleModalPopoversLabel" aria-hidden="true">
<div class="modal fade" id="exampleModalPopovers" tabindex="-1" aria-labelledby="exampleModalPopoversLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -410,7 +410,7 @@ Add `.modal-dialog-centered` to `.modal-dialog` to vertically center the modal.
Utilize the Bootstrap grid system within a modal by nesting `.container-fluid` within the `.modal-body`. Then, use the normal grid system classes as you would anywhere else.
<div class="modal fade" id="gridSystemModal" tabindex="-1" role="dialog" aria-labelledby="gridModalLabel" aria-hidden="true">
<div class="modal fade" id="gridSystemModal" tabindex="-1" aria-labelledby="gridModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -501,7 +501,7 @@ Below is a live demo followed by example HTML and JavaScript. For more informati
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="@fat">Open modal for @fat</button>
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="@getbootstrap">Open modal for @getbootstrap</button>
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
@ -555,7 +555,7 @@ If you want for example a zoom-in animation, you can set `$modal-fade-transform:
For modals that simply appear rather than fade in to view, remove the `.fade` class from your modal markup.
{% highlight html %}
<div class="modal" tabindex="-1" role="dialog" aria-labelledby="..." aria-hidden="true">
<div class="modal" tabindex="-1" aria-labelledby="..." aria-hidden="true">
...
</div>
{% endhighlight %}
@ -566,7 +566,7 @@ If the height of a modal changes while it is open, you should call `$('#myModal'
### Accessibility
Be sure to add `role="dialog"` and `aria-labelledby="..."`, referencing the modal title, to `.modal`. Additionally, you may give a description of your modal dialog with `aria-describedby` on `.modal`.
Be sure to add `aria-labelledby="..."`, referencing the modal title, to `.modal`. Additionally, you may give a description of your modal dialog with `aria-describedby` on `.modal`. Note that you don't need to add `role="dialog"` since we already add it via JavaScript.
### Embedding YouTube videos
@ -622,7 +622,7 @@ Our default modal without modifier class constitutes the "medium" size modal.
<div class="modal-dialog modal-sm">...</div>
{% endhighlight %}
<div class="modal fade" id="exampleModalXl" tabindex="-1" role="dialog" aria-labelledby="exampleModalXlLabel" aria-hidden="true">
<div class="modal fade" id="exampleModalXl" tabindex="-1" aria-labelledby="exampleModalXlLabel" aria-hidden="true">
<div class="modal-dialog modal-xl">
<div class="modal-content">
@ -639,7 +639,7 @@ Our default modal without modifier class constitutes the "medium" size modal.
</div>
</div>
<div class="modal fade" id="exampleModalLg" tabindex="-1" role="dialog" aria-labelledby="exampleModalLgLabel" aria-hidden="true">
<div class="modal fade" id="exampleModalLg" tabindex="-1" aria-labelledby="exampleModalLgLabel" aria-hidden="true">
<div class="modal-dialog modal-lg">
<div class="modal-content">
@ -656,7 +656,7 @@ Our default modal without modifier class constitutes the "medium" size modal.
</div>
</div>
<div class="modal fade" id="exampleModalSm" tabindex="-1" role="dialog" aria-labelledby="exampleModalSmLabel" aria-hidden="true">
<div class="modal fade" id="exampleModalSm" tabindex="-1" aria-labelledby="exampleModalSmLabel" aria-hidden="true">
<div class="modal-dialog modal-sm">
<div class="modal-content">
<div class="modal-header">