ARIA DIALOG

About

HTML, CSS and JS UI-component for user-friendly and accessible dialogs: WAI ARIA 1.1 compliant. Go to demo page or check on npm.

• User-friendly and accessible
• Support for modal dialogs and alert dialogs.
• Developed following BEM methodology
• JS plugin size: 4KB (minified)
• Compatible with UMD

Dependencies

jQuery

Developed and tested with jQuery 3.2.1

Cross-browser tests

• Google Chrome 57 / macOS Sierra 10
• iPhone 5s Safari for iOS 10.3.2
• Google Chrome 60, Edge, Firefox / Windows 10

Settings / Options

Name	Default	Type	Description
dialogIdPrefix	dialog--	string	Prefix used to generate the id of a dialog, if not set in the markup
windowClass	dialog__window	string	Class of a dialog window (The class is used from the plugin to select the element)
containerClass	dialog__container	string	Class of a dialog container (The class is used from the plugin to select the element)
headingClass	dialog__heading	string	Class of a dialog heading (The class is used from the plugin to select the element)
openClass	dialog_open	string	Class added to an open dialog
windowOpenClass	dialog__window_open	string	Class added to a dialog window, when the dialog is open
dialogType	modal	token	Set type of dialog: modal or alert. For more informations see https://www.w3.org/TR/wai-aria-practices-1.1/#alertdialog and https://www.w3.org/TR/wai-aria-practices-1.1/#dialog_modal. (Support for non-modal dialog is planned for future versions of the plugin).
closeWithEsc	true	bool	Close dialog when esc key is pressed (recommended value is true)
closeOnBgClick	true	bool	Close dialog if user clicks on dialog's background
fadeSpeed	100	int (>= 0)	Duration of fade-in and fade-out animations.
cssTransitions	false	bool	Use css transitions to show/hide dialog instead of jQuery fade animations. Read section 'Using CSS transitions' for more infos
setFocusOn	'button:first-child'	string (selector)	The jQuery selector of the element to set focus on, when the dialog is open. Required

Installation

Download the package from GitHub and get the compiled files from the dist folder.

The plugin is also available on npm:

npm install t-aria-dialog

Usage

1. Include the JS script aria-dialog.js - or the minified production script aria-dialog.min.js - in the head or the body of your HTML file.
2. Include the CSS file aria-dialog.css in the head of your HTML file or include the SCSS files in your project.
3. Initialise the widget within an inline script tag, or in an external JS file.

HTML

Use following HTML markup to implement a dialog:

<!-- Dialog with visible heading -->
<div class="dialog" id="dialog-1">
  <section class="dialog__window">
    <div class="dialog__container">
      <header class="dialog__header">
        <h2 class="dialog__heading">Modal dialog</h2>
        <button class="dialog__dismiss-btn" id="dismiss-btn-2">X</button>
      </header>
      <div class="dialog__body">
        <p>This is a useful modal dialog. Close dialog?</p>
        <div class="dialog__options">
          <button class="dialog__option-btn" type="button" id="btn-yes-2">Yes</button>
          <button class="dialog__option-btn" type="button" id="btn-no-2">No</button>
        </div>
      </div>
    </div>
  </section>
</div>

<!-- OR -->

<!-- Dialog without visible heading (uses aria-label instead) -->
<div class="dialog" id="dialog-2">
  <section class="dialog__window" aria-label="Dialog heading">
    <div class="dialog__container">
      <header class="dialog__header">
        <h2 class="dialog__heading">Modal dialog</h2>
        <button class="dialog__dismiss-btn" id="dismiss-btn-2">X</button>
      </header>
      <div class="dialog__body">
        <p>This is a useful modal dialog. Close dialog?</p>
        <div class="dialog__options">
          <button class="dialog__option-btn" type="button" id="btn-yes-2">Yes</button>
          <button class="dialog__option-btn" type="button" id="btn-no-2">No</button>
        </div>
      </div>
    </div>
  </section>
</div>

JS: Initialise

Initialise the plugin as follows:

$('.dialog').ariaDialog({
  option1: value1,
  option2: value2
});

Methods

The plugin supports following methods: show, hide.

Open:

To open a dialog call ariaDialog and pass 'show' as parameter:

$('#my-dialog').ariaDialog('show');

Hide:

To close a dialog call ariaDialog and pass 'hide' as parameter:

$('#my-dialog').ariaDialog('hide');

Custom events

This plugin triggers following events:

• ariaDialog.initialised after the dialog is initialised
• ariaDialog.show when a dialog is shown
• ariaDialog.hide when a dialog is closed

The custom events are triggered on window and return the dialog data object as argument.

//add event listener  
$(window).on('ariaDialog.show', function(event, dialog){
  //perform an action
  dialog.element.addClass('my-custom-class')
});

Using CSS transitions

By default the plugin is configured to use JS to show/hide dialogs. Setting the option cssTransitions to 'true' will disable the JS animations. This will make possible to implement show/hide animations directly in the css. In fact, the plugin toggles the classes passed along with the options dialogOpenClass and windowOpenClass when the dialog is toggled.

Planned features

• Support for non-modal dialogs.

LICENSE

This project is licensed under the terms of the MIT license.

See LICENSE.md for detailed informations.