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Integrating MDC Web into Frameworks

MDC Web was designed to be integrated as easily as possible into any and all web frameworks. This document will walk you through strategies for integrating components into various types of frameworks.

Examples

We maintain a list of component libraries, which wrap MDC Web for other frameworks, in our main README (under the MDC Web on other frameworks document). Each library must:

• Serve components in an à-la-carte delivery model
• Have existed for longer than 6 weeks and show continued maintenance over time
• Provide usage documentation per component

Approaches

There are two approaches you can take for integrating our components into frameworks: the simple approach and the advanced approach. Both have their benefits and drawbacks, and are explained below.

The Simple Approach: Wrapping MDC Web vanilla components.

The easiest way to integrate MDC Web into frameworks is to use our vanilla components directly. This works well for frameworks which assume they will be executed within the context of a browser, such as angular v1, backbone.js, or even things such as jQuery plugins.

The simple approach can be outlined as follows:

1. Include the Component's CSS on the page any way you wish
2. Create a wrapper component for your framework of choice, and add a property which will be set to the value of the MDC Web Component. We'll call this mdcComponent.
3. When the wrapper component is initialized (e.g. it is instantiated and attached to the DOM), instantiate the MDC Web component with a root element, and assign it to the mdcComponent property.
4. When the wrapper component is destroyed (e.g. it is unbound and detached from the DOM), call mdcComponent.destroy() to clean up the MDC Web component.

This general approach will work for almost all basic use-cases. For an example of this approach, check out this plunk which shows how to wrap our text field within an angular v1 component, as well as our button (with a ripple) within an attribute directive.

Note that this approach will also work for custom elements. Use connectedCallback for initialization and disconnectedCallback for destruction.

The Advanced Approach: Using foundations and adapters

Many modern front-end libraries/frameworks, such as react and angular, wind up targeting more than just a web browser. For these frameworks - and for some highly advanced application architectures - a more robust approach is required. We provide foundations and adapters to accommodate this use case.

If you are interested in wrapping our components using foundations/adapters, you should first read through our architecture overview in order to familiarize yourself with the general concepts behind them.

Every component comes with a complementary foundation class, which is usually called MDCComponentFoundation, where MDCComponent is the name of a component. For example, we have an MDCMenuFoundation that is used by our MDCMenu component, and which are both exported publicly.

In order to implement a component via a foundation, take the following steps:

1. Include the component's CSS on the page any way you wish
2. Add an instance property to your component which will be set to the proper foundation class. We'll call this mdcFoundation.
3. Instantiate a foundation class, passing it a properly configured adapter as an argument
4. When your component is initialized, call mdcFoundation.init()
5. When your component is destroyed, call mdcFoundation.destroy()

Because of the nature of our components, some of the adapter APIs can be quite complex. However, we are working as hard as we can to make writing adapters as easy and predictable as possible:

• Adapters are strictly versioned: any change to an adapter interface - associative or not - is considered breaking and will cause a major version update of the component.
• Every adapter interface is thoroughly documented within each component's README
• Most adapter methods are one-liners, and for those that aren't, we provide util objects which implement those methods.
• We try and provide guidance on different ways to implement certain adapter methods that may seem ambiguous
• We plan on creating Type Definitions for our adapters in the future so that TypeScript users can validate that their interface conforms correctly to the adapter's specification.

Please file an issue with us if there are certain snags you've ran into trying to implement an adapter, or if you feel that we can provide better guidance on a particular problem. This is definitely something we want to know about.