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README.md

Primer Popover

npm version Build Status

Popover for suggesting, guiding, and bringing attention to specific UI elements on a page.

This repository is a module of the full primer repository.

Install

This repository is distributed with npm. After installing npm, you can install primer-popover with this command.

$ npm install --save primer-popover

Usage

The source files included are written in Sass (SCSS) You can simply point your sass include-path at your node_modules directory and import it like this.

@import "primer-popover/index.scss";

You can also import specific portions of the module by importing those partials from the /lib/ folder. Make sure you import any requirements along with the modules.

Build

For a compiled CSS version of this module, an npm script is included that will output a css version to build/build.css The built css file is also included in the npm package:

$ npm run build

Documentation

Popovers are used to bring attention to specific user interface elements, typically to suggest an action or to guide users through a new experience.

{:toc}

A popover consist of:

  • The block element, .Popover, which simply positions its content absolutely atop other body content.
  • The child element, .Popover-message, which contains the markup for the intended messaging and the visual "caret."

In the examples below, Popover-message, in particular, uses a handful of utility classes to style it appropriately. And these are intended to demonstrate the default, go-to presentation for the popover's message. By default, the message's caret is centered on the top edge of the message.

The Popover-message element also supports several modifiers, most of which position the caret differently:

Each of these modifiers also support a syntax for adjusting the positioning the caret to the right, left, top, or bottom of its respective edge. That syntax looks like:

Lastly, there is an added .Popover-message--large modifier, which assumes a slightly wider popover message on screens wider than 544px.

Notes

The samples below include optional markup, like:

  • An outermost container that establishes stacking context (e.g. position-relative).
  • A choice piece of user interface (a button, in this case) to relate the popover to.
  • Use of the Details and js-details family of class names, which interact with JavaScript to demonstrate dismissal of the popover by clicking the nested "Got it!" button.

Basic example

Defaults to caret oriented top-center.

<div class="position-relative text-center">
  <button class="btn btn-primary">UI</button>
  <div class="Popover right-0 left-0">
    <div class="Popover-message text-left p-4 mt-2 mx-auto Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
</div>

Large example

<div class="position-relative text-center">
  <button class="btn btn-primary">UI</button>
  <div class="Popover right-0 left-0">
    <div class="Popover-message Popover-message--large text-left p-4 mt-2 Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
</div>

Bottom

<div class="position-relative text-center">
  <div class="Popover position-relative">
    <div class="Popover-message Popover-message--bottom p-4 mx-auto mb-2 text-left Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
  <button class="btn btn-primary">UI</button>
</div>

Bottom-right

<div class="position-relative text-right">
  <div class="Popover position-relative">
    <div class="Popover-message Popover-message--bottom-right p-4 mb-2 text-left Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
  <button class="btn btn-primary">UI</button>
</div>

Bottom-left

<div class="Popover position-relative">
  <div class="Popover-message Popover-message--bottom-left p-4 mb-2 Box box-shadow-large">
    <h4 class="mb-2">Popover heading</h4>
    <p>Message about this particular piece of UI.</p>
    <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
  </div>
</div>
<button class="btn btn-primary">UI</button>

Left

<div class="d-flex flex-justify-center flex-items-center">
  <button class="btn btn-primary">UI</button>
  <div class="Popover position-relative">
    <div class="Popover-message Popover-message--left p-4 ml-2 Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
</div>

Left-bottom

<div class="d-flex flex-justify-center flex-items-end">
  <button class="btn btn-primary">UI</button>
  <div class="Popover position-relative">
    <div class="Popover-message Popover-message--left-bottom p-4 ml-2 Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
</div>

Left-top

<div class="d-flex flex-justify-center flex-items-start">
  <button class="btn btn-primary">UI</button>
  <div class="Popover position-relative">
    <div class="Popover-message Popover-message--left-top p-4 ml-2 Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
</div>

Right

<div class="d-flex flex-justify-center flex-items-center">
  <div class="Popover position-relative">
    <div class="Popover-message Popover-message--right p-4 mr-2 Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
  <button class="btn btn-primary">UI</button>
</div>

Right-bottom

<div class="d-flex flex-justify-center flex-items-end">
  <div class="Popover position-relative">
    <div class="Popover-message Popover-message--right-bottom p-4 mr-2 Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
  <button class="btn btn-primary">UI</button>
</div>

Right-top

<div class="d-flex flex-justify-center flex-items-start">
  <div class="Popover position-relative">
    <div class="Popover-message Popover-message--right-top p-4 mr-2 Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
  <button class="btn btn-primary">UI</button>
</div>

Top-left

<div class="position-relative">
  <button class="btn btn-primary">UI</button>
  <div class="Popover">
    <div class="Popover-message Popover-message--top-left p-4 mt-2 Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
</div>

Top-right

<div class="position-relative text-right">
  <button class="btn btn-primary">UI</button>
  <div class="Popover right-0">
    <div class="Popover-message Popover-message--top-right text-left p-4 mt-2 Box box-shadow-large">
      <h4 class="mb-2">Popover heading</h4>
      <p>Message about this particular piece of UI.</p>
      <button type="submit" class="btn btn-outline mt-2 text-bold">Got it!</button>
    </div>
  </div>
</div>

License

MIT © GitHub