MDC Drawer
The MDC Drawer component is a spec-aligned drawer component adhering to the
Material Design navigation drawer pattern.
It implements permanent and temporary drawers. Permanent drawers are CSS-only and require no JavaScript, whereas
temporary drawers require JavaScript to function, in order to respond to user interaction.
Installation
npm install --save @material/drawer
Permanent drawer usage
A permanent drawer is always open, sitting to the side of the content. It is appropriate for any display size larger
than mobile.
TODO(sgomes): Give advice on how to hide permanent drawer in mobile.
<nav class="mdc-permanent-drawer mdc-typography">
<div class="mdc-permanent-drawer__toolbar-spacer"></div>
<div class="mdc-permanent-drawer__content">
<nav id="icon-with-text-demo" class="mdc-list">
<a class="mdc-list-item mdc-permanent-drawer--selected" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">inbox</i>Inbox
</a>
<a class="mdc-list-item" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">star</i>Star
</a>
</nav>
</div>
</nav>
<div>
Toolbar and page content go inside here.
</div>
In the example above, we've set the drawer above the toolbar, and are using a toolbar spacer to ensure that it is
presented correctly, with the correct amount of space to match the toolbar height. Note that you can place content
inside the toolbar spacer.
Permanent drawers can also be set below the toolbar:
<div>Toolbar goes here</div>
<div class="content">
<nav class="mdc-permanent-drawer mdc-typography">
<nav id="icon-with-text-demo" class="mdc-list">
<a class="mdc-list-item mdc-permanent-drawer--selected" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">inbox</i>Inbox
</a>
<a class="mdc-list-item" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">star</i>Star
</a>
</nav>
<main>
Page content goes here.
</main>
</div>
CSS classes:
Class | Description |
---|
mdc-permanent-drawer | Mandatory. Needs to be set on the root element of the component. |
mdc-permanent-drawer__content | Mandatory. Needs to be set on the container node for the drawer content. |
mdc-permanent-drawer__toolbar-spacer | Optional. Add to node to provide the matching amount of space for toolbar. |
Temporary drawer usage
A temporary drawer is usually closed, sliding out at a higher elevation than the content when opened. It is appropriate
for any display size.
<aside class="mdc-temporary-drawer mdc-typography">
<nav class="mdc-temporary-drawer__drawer">
<header class="mdc-temporary-drawer__header">
<div class="mdc-temporary-drawer__header-content">
Header here
</div>
</header>
<nav id="icon-with-text-demo" class="mdc-temporary-drawer__content mdc-list">
<a class="mdc-list-item mdc-temporary-drawer--selected" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">inbox</i>Inbox
</a>
<a class="mdc-list-item" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">star</i>Star
</a>
</nav>
</nav>
</aside>
let drawer = new mdc.drawer.MDCTemporaryDrawer(document.querySelector('.mdc-temporary-drawer'));
document.querySelector('.menu').addEventListener('click', () => drawer.open = true);
Headers and toolbar spacers
Temporary drawers can use toolbar spacers, headers, or neither.
A toolbar spacer adds to the drawer the same amount of space that the toolbar takes up in your application. This is
very useful for visual alignment and consistency. Note that you can place content inside the toolbar spacer.
<aside class="mdc-temporary-drawer mdc-typography">
<nav class="mdc-temporary-drawer__drawer">
<div class="mdc-temporary-drawer__toolbar-spacer"></div>
<nav id="icon-with-text-demo" class="mdc-temporary-drawer__content mdc-list">
<a class="mdc-list-item mdc-temporary-drawer--selected" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">inbox</i>Inbox
</a>
<a class="mdc-list-item" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">star</i>Star
</a>
</nav>
</nav>
</aside>
A header, on the other hand, is a large rectangular area that maintains a 16:9 ratio. It's often used for user account
selection.
It uses an outer mdc-temporary-drawer__header
for positioning, with an inner mdc-temporary-drawer__header-content
for placing the actual content, which will be bottom-aligned.
<aside class="mdc-temporary-drawer mdc-typography">
<nav class="mdc-temporary-drawer__drawer">
<header class="mdc-temporary-drawer__header">
<div class="mdc-temporary-drawer__header-content">
Header content goes here
</div>
</header>
<nav id="icon-with-text-demo" class="mdc-temporary-drawer__content mdc-list">
<a class="mdc-list-item mdc-temporary-drawer--selected" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">inbox</i>Inbox
</a>
<a class="mdc-list-item" href="#">
<i class="material-icons mdc-list-item__start-detail" aria-hidden="true">star</i>Star
</a>
</nav>
</nav>
</aside>
CSS classes:
Class | Description |
---|
mdc-temporary-drawer | Mandatory. Needs to be set on the root element of the component. |
mdc-temporary-drawer__drawer | Mandatory. Needs to be set on the container node for the drawer content. |
mdc-temporary-drawer__content | Optional. Should be set on the list of items inside the drawer. |
mdc-temporary-drawer__toolbar-spacer | Optional. Add to node to provide the matching amount of space for toolbar. |
mdc-temporary-drawer__header | Optional. Add to container node to create a 16:9 drawer header. |
mdc-temporary-drawer__header-content | Optional. Add to content node inside mdc-temporary-drawer__header . |
Using the JS Component
MDC Temporary Drawer ships with a Component / Foundation combo which allows for frameworks to richly integrate the
correct drawer behaviors into idiomatic components.
Including in code
ES2015
import {MDCTemporaryDrawer, MDCTemporaryDrawerFoundation} from 'mdc-drawer';
CommonJS
const mdcDrawer = require('mdc-drawer');
const MDCTemporaryDrawer = mdcDrawer.MDCTemporaryDrawer;
const MDCTemporaryDrawerFoundation = mdcDrawer.MDCTemporaryDrawerFoundation;
AMD
require(['path/to/mdc-drawer'], mdcDrawer => {
const MDCTemporaryDrawer = mdcDrawer.MDCTemporaryDrawer;
const MDCTemporaryDrawerFoundation = mdcDrawer.MDCTemporaryDrawerFoundation;
});
Global
const MDCTemporaryDrawer = mdc.drawer.MDCTemporaryDrawer;
const MDCTemporaryDrawerFoundation = mdc.drawer.MDCTemporaryDrawerFoundation;
Automatic Instantiation
If you do not care about retaining the component instance for the temporary drawer, simply call attachTo()
and pass it a DOM element.
mdc.drawer.MDCTemporaryDrawer.attachTo(document.querySelector('.mdc-temporary-drawer'));
Manual Instantiation
Temporary drawers can easily be initialized using their default constructors as well, similar to attachTo
.
import {MDCTemporaryDrawer} from 'mdc-drawer';
const drawer = new MDCTemporaryDrawer(document.querySelector('.mdc-temporary-drawer'));
Using the Foundation Class
MDC Temporary Drawer ships with an MDCTemporaryDrawerFoundation
class that external frameworks and libraries can
use to integrate the component. As with all foundation classes, an adapter object must be provided.
The adapter for temporary drawers must provide the following functions, with correct signatures:
Method Signature | Description |
---|
addClass(className: string) => void | Adds a class to the root element. |
removeClass(className: string) => void | Removes a class from the root element. |
hasClass(className: string) => boolean | Returns boolean indicating whether element has a given class. |
hasNecessaryDom() => boolean | Returns boolean indicating whether the necessary DOM is present (namely, the mdc-temporary-drawer__drawer drawer container). |
registerInteractionHandler(evt: string, handler: EventListener) => void | Adds an event listener to the root element, for the specified event name. |
deregisterInteractionHandler(evt: string, handler: EventListener) => void | Removes an event listener from the root element, for the specified event name. |
registerDrawerInteractionHandler(evt: string, handler: EventListener) => void | Adds an event listener to the drawer container sub-element, for the specified event name. |
deregisterDrawerInteractionHandler(evt: string, handler: EventListener) => void | Removes an event listener from drawer container sub-element, for the specified event name. |
registerTransitionEndHandler(handler: EventListener) => void | Registers an event handler to be called when a transitionend event is triggered on the drawer container sub-element element. |
deregisterTransitionEndHandler(handler: EventListener) => void | Deregisters an event handler from a transitionend event listener. This will only be called with handlers that have previously been passed to registerTransitionEndHandler calls. |
registerDocumentKeydownHandler(handler: EventListener) => void | Registers an event handler on the document object for a keydown event. |
deregisterDocumentKeydownHandler(handler: EventListener) => void | Deregisters an event handler on the document object for a keydown event. |
getDrawerWidth() => number | Returns the current drawer width, in pixels. |
setTranslateX(value: number) => void | Sets the current position for the drawer, in pixels from the border. |
updateCssVariable(value: string) => void | Sets a CSS custom property, for controlling the current background opacity when manually dragging the drawer. |
getFocusableElements() => NodeList | Returns the node list of focusable elements inside the drawer. |
saveElementTabState(el: Element) => void | Saves the current tab index for the element in a data property. |
restoreElementTabState(el: Element) => void | Restores the saved tab index (if any) for an element. |
makeElementUntabbable(el: Element) => void | Makes an element untabbable. |
isRtl() => boolean | Returns boolean indicating whether the current environment is RTL. |
isDrawer(el: Element) => boolean | Returns boolean indicating whether the provided element is the drawer container sub-element. |