Origami Frontend Components & Services

Readme: o-banner

o-banner is a component used for product messaging which could include feature promotion, education, feedback, and legal information.

o-banner includes Sass and JavaScript to show and hide the banner. Banners can be created declaratively by adding markup to the page, or imperatively using JavaScript (only when not using the Build Service).

Behaviour

o-banner elements appear fixed to the bottom of the screen. You can dismiss a banner, which will hide it but not remove it from the DOM. By default the last banner to be created will be the one that automatically opens. Opening a new banner will close any that are currently open.

Markup

This HTML demonstrates the declarative way to instantiate o-banner. If you are using the Build Service or firing your own o.DOMContentLoaded event, this is all you need to create a banner:

<div class="o-banner" data-o-component="o-banner">
    <div class="o-banner__outer">
        <div class="o-banner__inner" data-o-banner-inner="">

            <!-- Content to display on larger screens -->
            <div class="o-banner__content o-banner__content--long">
                <p>Try the new compact homepage. A list view of today's homepage with fewer images.</p>
            </div>

            <!-- Content to display on smaller screens -->
            <div class="o-banner__content o-banner__content--short">
                <p>Try the new compact homepage.</p>
            </div>

            <!-- Button and link -->
            <div class="o-banner__actions">
                <div class="o-banner__action">
                    <a href="#" class="o-banner__button">Try it now</a>
                </div>
                <div class="o-banner__action o-banner__action--secondary">
                    <a href="#" class="o-banner__link">Give feedback</a>
                </div>
            </div>

        </div>
    </div>
</div>

Variable content based on screen size as well as the link after the button are optional. A minimal banner would look like this (note removal of content modifiers):

<div class="o-banner" data-o-component="o-banner">
    <div class="o-banner__outer">
        <div class="o-banner__inner" data-o-banner-inner="">
            <div class="o-banner__content">
                <p>Try the new compact homepage. A list view of today's homepage with fewer images.</p>
            </div>
            <div class="o-banner__actions">
                <div class="o-banner__action">
                    <a href="#" class="o-banner__button">Try it now</a>
                </div>
            </div>
        </div>
    </div>
</div>

The banner's primary action can be a form with a submit button if required. Change the actions markup to the following:

<div class="o-banner__actions">
    <form class="o-banner__action" action="/example">
        <input class="o-banner__button" type="submit" value="Try it now" />
    </form>
    …
</div>

If the banner element is empty, then the appropriate structure will be constructed with JavaScript using data attributes to specify options:

<div
    class="o-banner"
    data-o-component="o-banner"
    data-o-banner-content-long="Do you like o-banner?"
    data-o-banner-button-label="Yes"
></div>

If the banner element has content, but does not include an o-banner__outer element, then it will assume that the element content should be wrapped in the appropriate markup:

<div class="o-banner" data-o-component="o-banner">
    <p>This is the banner content</p>
</div>

JavaScript

No code will run automatically unless you are using the Build Service. You must either construct an o-banner object or fire an o.DOMContentLoaded event, which o-banner listens for.

Constructing an o-banner

If you have set up your banner declaratively:

import Banner from 'o-banner';
const bannerElement = document.getElementById('my-banner-element');
const myBanner = new Banner(bannerElement);

The second argument passed to oBanner is an options object, this can be used to change the behaviour and display of a banner.

If you wish to create a banner from scratch with no existing DOM elements, you can set up your banner like this:

import Banner from 'o-banner';
const myBanner = new Banner(null, {
    contentLong: 'Try the new compact homepage. A list view of today\'s homepage with fewer images.',
    contentShort: 'Try the new compact homepage.',
    buttonLabel: 'Try it now',
    buttonUrl: '#try-button',
    linkLabel: 'Give feedback',
    linkUrl: '#feedback-link'
});

The available options are documented below.

Manipulating an o-banner

Once you have an o-banner instance, you can manipulate it using the following methods (assume an instance named myBanner exists):

Options

There are several options used to change the appearance or behaviour of o-banner. All of these are optional, but it's recommended to set at least contentLong, buttonLabel, and buttonUrl. Set the following as properties on the second argument to oBanner:

Sass

As with all Origami components, o-banner has a silent mode. To use its compiled CSS (rather than using its mixins with your own Sass) set $o-banner-is-silent: false; in your Sass before you've imported the o-banner Sass.

o-banner includes a primary mixin that takes an $opts parameter. The themes key of $opts includes styles for themes. The layouts key includes styles for layouts:

@include oBanner($opts: (
    'layouts': ('small', 'compact'),
    'themes': ('marketing', 'product')
));

If you call the mixin without arguments you will get all the built-in themes:

@include oBanner();

Layouts

o-banner supports different layouts:

In the markup, these can be applied as classes alongside the o-banner class. They are exposed as modifiers:

<div class="o-banner o-banner--small">
    ...
</div>

In the JavaScript, use the layout option:

const myBanner = new oBanner({
    layout: 'small'
});

Themes

o-banner is themeable which may be used in combination with a layout:

In the markup, these can be applied as classes alongside the o-banner class. They are exposed as modifiers:

<div class="o-banner o-banner--marketing">
    ...
</div>

In the JavaScript, use the theme option:

const myBanner = new oBanner({
    theme: 'marketing'
});

Custom Themes

The oBannerAddTheme mixin can be used to create and output styles for a custom banner theme. This allows you to alter colours and backgrounds completely:

@include oBannerAddTheme('bubblegum', (
    background-color: oColorsMix('candy', 'white', 75),
    text-color: oColorsByName('oxford-90')
));

The above Sass will output CSS like this:

.o-banner--bubblegum {
    /* styles */
}

You can add this new class to your banner element, either in the HTML:

<div class="o-banner o-banner--bubblegum">
    ...
</div>

or via the theme option in JavaScript:

const myBanner = new Banner(null, {
    theme: 'bubblegum',
    ...
});

Custom Theme Options

You can change a lot of aspects of a banner's visual appearance. When using the oBannerAddTheme mixin, you can specify the following properties:

Property Required? Type Description
background-color Yes Colour* Sets the banner background colour
text-color Yes Colour* Sets the banner's text colour
background-image No String Sets the banner background image, this should be a URL. Defaults to no background
background-position No CSS value Sets the banner background position, this can be any valid background-position value. Defaults to bottom right
background-repeat No CSS Value Sets the banner background repeat, this can be any valid background-repeat value. Defaults to no-repeat
button-background-color No Colour* Sets the banner's primary action button colour. Defaults to the value of the text-color property
button-type No String Sets the banner's button type, this can be either primary or secondary. Defaults to primary
heading-rule-color No Colour* Sets the banner's heading rule colour, the line that appears below the heading. Defaults to the value of the text-color property
link-text-color No Colour* Sets the banner's link text colour, both in the banner content and the secondary action. Defaults to the value of the text-color property

* When a type of Colour is required, please specify a colour value and not an o-colors name. If you with to use an o-colors colour, then you can pass in oColorsByName('<NAME>'), replacing <NAME> with your desired color.

Migration

State Major Version Last Minor Release Migration guide
✨ active 3 N/A migrate to v3
⚠ maintained 2 2.3 migrate to v2
╳ deprecated 1 1.7 N/A

Contact

If you have any questions or comments about this component, or need help using it, please either raise an issue, visit #origami-support or email Origami Support.


Licence

This software is published by the Financial Times under the MIT licence.

Support Status
active
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GitHub Repository

Install o-banner

If using the Build Service, add o-banner@^3.3.4 to your script and link tags.

If running a Manual Build, run bower install --save "o-banner@^3.3.4".

Help & Support

o-banner is maintained directly by the Origami team. If you have any questions about o-banner or Origami in general, we are happy to help. 😊

Slack: #origami-support
Email: origami.support@ft.com

Feedback / Issues

To report a bug or request features please create an issue on Github. For support or general feedback please get in touch 😊

Slack: #origami-support
Email: origami.support@ft.com