This repo is no longer undergoing active development and is in the process of being deprecated. All future development should be done in the Elements-SDK repo.
To see individual Elements components in action, please visit http://pearson-higher-ed.github.io/elements/elements/ on Github.
We recommend that you install Elements in your project using npm:
npm install --save pearson-elements
The installation provides both the dist version with CSS, and the original source SCSS, with required assets. This allows the option for the consuming app to include the styles framework as a static asset or as part of a build process.
To comment out any SCSS file so it's not added to your rendered elements.css, open /scss/elements.scss and use JavaScript-style commenting. Example:
@import 'base/variables';
//@import 'base/html-tags';
@import 'elements/typography/font-face';
The above would prevent the _html-tags.scss styles from being transpiled into the elements.css file.
If desired, Elements ships with a version that does not include any styling on plain HTML tags. Simply include the dist/css/elementsNoPlain.css or dist/css/elementsNoPlain.min.css files, or add the /scss/elementsNoPlain.scss file to the project.
When using the ElementsNoPlain stylesheet, the (r)em-based sizing of page elements will differ from pages using the elements.css unless you are able to set the class the class pe-base-fontsizeon the html, body, or first main container of the page. To get the Open Sans font stack, use thepe-fontstackclass. Basic chunks of text (or their containers) can use thepe-copy` class to regulate font-size, line-height, and text color.
Using various Elements classes without the base settings for font-size, font-family, line-hieght and color will leave you with results that differ from other pages styled by elements.css (and that may be what you want).
Elements looks for the /fonts and /icons folders at the root of your served application. Copy the npm-installed /fonts and /icons to the correct location in your web server, and ensure your application is set up to allow the font files to download correctly and not filter out the response header Content Type (i.e. 'application/x-font-ttf') so the fonts may be rendered in the browser.
Some caching headers will prevent Internet Explorer from showing font files after a refresh. The culprits are Cache-control: no-store and on https Pragma: no-cache. Using the Vary header can also stop older IE from caching.
This version of Elements uses an SVG sprite for icons (the Pearson logos are two separate SVGs, not part of the sprite). The sprite file is found in /dist/icons/ in Elements, and should be copied to the appropriate place, as mentioned above, in your web server. In additional, to support Internet Explorer and some versions of Android where the default-Chrome browser is actually webkit, that SVG sprite must be present on your application's page. See the icons page under "Two methods of including icons" for examples of getting this sprite on your application page. Additionally, there are instructions on that page for how to add new icons.
Please review the guidelines for contributing before getting started.
You must have Node.js v5 installed.
Clone the project and install the dependencies:
git clone https://github.com/Pearson-Higher-Ed/elements.git
cd elements
npm install
See the icons documentation under "Adding new icons" for the process of adding a new icon.
Contibutors adding wholly new components to Elements (which have been already approved by UX design), in addition to writing CSS for the component, will also need to add a new component page to the docs.
We use Metalsmith to generate the documentation. To add a new component to the docs:
- update
/docs/_data/nav.yamlfile with the new component name (this adds it to the menu) - add a new
.mdfile to/docs/elements/(use any of the other files in that directory as an example)
The new component's document page should:
- have some explanation of what the purpose of the element or component is
- have some example HTML (wrapped in demo tags, you can show both the rendered in-browser version as well as the actual HTML code in one go) for other developers to see where to best add Elements classes
- have any special use notes if needed, such as accessibility or browser support gotchas
To view your changes or some branch in action:
npm start
This will give you a browser-sync served copy of the docs on http://localhost:3000, and build the latest version of elements.min.css to /dist.
Forked repo will not trigger the 'ux-test-platform' tests. In the logs, you would see this error: {"error":"Travis encountered an error, sorry :("} which may cause the elements build to fail.
To handle this, follow below steps to have successful build runs:
cd elements
travis login --org *Provide your github login and password
travis token --org *Copy the access token
travis encrypt AUTH_TOKEN=access_token *Copy this token and replace it with env: global: secure: <<access_token>> in .travis.yml file
Push this change and the ux-test-platform build would be triggered successfully.
List of Elements with their current respective design version:
| Element | Current Design Version |
|---|---|
| Typography | v2.0.0 |
| Color | v2.1.0 |
| Icons | v2.1.0 |
| Buttons | v2.1.2 |
| Inputs | v2.0.1 |
| Grid | v1.0.0 |
| Presentation Strategies | v1.0.0 |
| Templates | v2.0.0-beta.2 |
| Responsive Utilities (Breakpoints) | v1.0.0 |
| Forms | v1.0.0-beta.3 |
** Developers should update table as they implement new versions...*
This project was inspired by other popular front-end frameworks published under the MIT license:
- Bootstrap copyright 2011-2017 Twitter, Inc.
- Foundation copyright 2017 ZURB, inc.
Copyright 2017 Pearson Education. This software is published under the MIT license.