Tobii NPM | npm.io

Tobii

An accessible, open-source lightbox with no dependencies.

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Open slide with a picture of the Berlin television tower

Features

No dependencies
Accessible:
- ARIA roles
- Keyboard navigation:
  - Prev/ Next Keys: Navigate through slides
  - ESCAPE Key: Close Tobii
  - TAB Key: Focus elements within Tobii, not outside
- User preference media features:
  - prefers-reduced-motion media query
- When Tobii opens, focus is set to the first focusable element in Tobii
- When Tobii closes, focus returns to what was in focus before Tobii opened
Touch & Mouse drag support:
- Drag/ Swipe horizontal to navigate through slides
- Drag/ Swipe vertical to close Tobii
Responsive
Support iframes
Support inline HTML

Get Tobii

Download

CSS: css/tobii.min.css minified, or css/Totii.css un-minified

JavaScript: js/tobii.min.js minified, or js/tobii.js un-minified

Package managers

Tobii is also available on npm.

npm install tobii --save

Usage

You can install Tobii by linking the .css and .js files to your html file. The HTML code may look like this:

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Your page title</title>

  <!-- CSS -->
  <link href="tobii.min.css" rel="stylesheet">
</head>
<body>
  <!-- Your HTML content -->

  <!-- JS -->
  <script src="tobii.min.js"></script>
</body>
</html>

Initialize the script by running:

const tobii = new Tobii()

Media types

Image

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The standard way of using Tobii is a linked thumbnail image with the class name lightbox to a larger image:

<a href="path/to/image.jpg" class="lightbox">
  <img src="path/to/thumbnail.jpg" alt="I am a caption">
</a>

Instead of a thumbnail, you can also refer to a larger image with a textlink:

<a href="path/to/image.jpg" class="lightbox">
  Open image
</a>

Inline HTML

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For inline HTML, create an element with a unique ID:

<div id="selector">
  <!-- Your HTML content -->
</div>

Then create a link with the class name lightbox and a href attribute that matches the ID of the element:

<a href="#selector" data-type="html" class="lightbox">
  Open HTML content
</a>

or a button with the class name lightbox and a data-target attribute that matches the ID of the element:

<button type="button" data-type="html" data-target="#selector" class="lightbox">
  Open HTML content
</button>

In both ways, the attribute data-type with the value html must be added.

Iframe

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For an iframe, create a link with the class name lightbox:

<a href="https://www.wikipedia.org" data-type="iframe" class="lightbox">
  Open Wikipedia
</a>

or a button with the class name lightbox and a data-target attribute:

<button type="button" data-type="iframe" data-target="https://www.wikipedia.org" class="lightbox">
  Open Wikipedia
</button>

In both ways, the attribute data-type with the value iframe must be added.

Optional attributes

data-height set the height and data-width the width of the iframe.

YouTube

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For an YouTube video, create a link with the class name lightbox and a data-id attribute with the YouTube video ID:

<a href="#" data-type="youtube" data-id="KU2sSZ_90PY" class="lightbox">
  Open YouTube video
</a>

or a button with the class name lightbox and a data-id attribute with the YouTube video ID:

<button type="button" data-type="youtube" data-id="KU2sSZ_90PY" class="lightbox">
  Open YouTube video
</button>

In both ways, the attribute data-type with the value youtube must be added.

Optional attributes

data-controls indicates whether the video player controls are displayed: 0 do not display and 1 display controls in the player.
data-height set the height and data-width the width of the player. I recommend using an external library for responsive iframes.

Grouping

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If you have a group of related types that you would like to combine into a set, add the data-group attribute:

<a href="path/to/image_1.jpg" class="lightbox" data-group="vacation">
  <img src="path/to/thumbnail_1.jpg" alt="I am a caption">
</a>

<a href="path/to/image_2.jpg" class="lightbox" data-group="vacation">
  <img src="path/to/thumbnail_2.jpg" alt="I am a caption">
</a>

// ...

<a href="path/to/image_4.jpg" class="lightbox" data-group="birthday">
  <img src="path/to/thumbnail_4.jpg" alt="I am a caption">
</a>

// ...

Options

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You can pass an object with custom options as an argument.

const tobii = new Tobii({
  captions: false
})

The following options are available:

Property	Type	Default	Description
selector	string	".lightbox"	All elements with this class triggers Tobii.
captions	bool	true	Display captions, if available.
captionsSelector	"self", "img"	"img"	Set the element where the caption is. Set it to "self" for the `a` tag itself.
captionAttribute	string	"alt"	Get the caption from given attribute.
nav	bool, "auto"	"auto"	Display navigation buttons. "auto" hides buttons on touch-enabled devices.
navText	string	"inline svg", "inline svg"	Text or HTML for the navigation buttons.
navLabel	string	"Previous", "Next"	ARIA label for screen readers.
close	bool	true	Display close button.
closeText	string	"inline svg"	Text or HTML for the close button.
closeLabel	string	"Close"	ARIA label for screen readers.
loadingIndicatorLabel	string	"Image loading"	ARIA label for screen readers.
counter	bool	true	Display current image index.
keyboard	bool	true	Allow keyboard navigation.
zoom	bool	true	Display zoom icon.
zoomText	string	"inline svg"	Text or HTML for the zoom icon.
docClose	bool	true	Click outside to close Tobii.
swipeClose	bool	true	Swipe up to close Tobii.
hideScrollbar	bool	true	Hide browser scrollbars if Tobii is displayed.
draggable	bool	true	Use dragging and touch swiping.
threshold	number	100	Touch and mouse dragging threshold (in px).
autoplayVideo	bool	false	Videos will automatically start playing as soon as they can do so without stopping to finish loading the data.

API

Function	Description
`open(index, callback)`	Open Tobii. Optional with a specific slide with `index` (number). Optional `callback` (function) as a second argument.
`next(callback)`	Show the next slide. Optional `callback` (function).
`prev(callback)`	Show the previous slide. Optional `callback` (function).
`close(callback)`	Close Tobii. Optional `callback` (function).
`add(element, callback)`	Add an `element` (DOM element) (example on CodePen). Optional `callback` (function) as a second argument (example on CodePen).
`remove(element, callback)`	Remove an `element` (DOM element). Optional `callback` (function) as a second argument.
`isOpen()`	Check if Tobii is open.
`currentSlide()`	Return the current slide index.
`selectGroup()`	Select a specific group.
`currentGroup()`	Return the current group.
`destroy()`	Destroy Tobii. Optional `callback` (function).

Browser support

Tobii has been tested in the following browsers (all the latest versions):

Chrome
Firefox
Internet Explorer
Edge
Safari

To do

Support for srcset and picture

Contributing

Open an issue or a pull request to suggest changes or additions
Spread the word

License

Tobii is available under the MIT license. See the LICENSE file for more info.

lightbox accessible a11y javascript vanilla scss css

@infinitebrahmanuniverse/nolb-tob @everything-registry/sub-chunk-2955

2.0.0-alpha

5 years ago

tobii v2.0.0-alpha

Tobii

Table of contents

Features

Get Tobii

Download

Package managers

Usage

Media types

Image

Inline HTML

Iframe

Optional attributes

YouTube

Optional attributes

Grouping

Options

API

Browser support

To do

Contributing

License