@material/list
Advanced tools
@material/list is a package from the Material Design Components (MDC) library that provides a set of components and utilities for creating lists with Material Design styling. It allows developers to create various types of lists, such as single-line, two-line, and three-line lists, with support for interactive elements like checkboxes, radio buttons, and icons.
Single-line List
This feature allows you to create a single-line list with Material Design styling. The `singleSelection` property enables single item selection within the list.
import { MDCList } from '@material/list';
const list = new MDCList(document.querySelector('.mdc-list'));
list.singleSelection = true;
Two-line List
This feature allows you to create a two-line list where each list item can have a primary and secondary text. The `wrapFocus` property ensures that focus wraps from the last item back to the first item when navigating with the keyboard.
import { MDCList } from '@material/list';
const list = new MDCList(document.querySelector('.mdc-list'));
list.wrapFocus = true;
List with Checkboxes
This feature allows you to create a list where each item includes a checkbox. The code initializes the list and maps over each list item to initialize the checkboxes.
import { MDCList } from '@material/list';
const list = new MDCList(document.querySelector('.mdc-list'));
list.listElements.map((listItemEl) => new MDCCheckbox(listItemEl.querySelector('.mdc-checkbox')));
List with Icons
This feature allows you to create a list where each item includes an icon button. The code initializes the list and maps over each list item to initialize the icon buttons.
import { MDCList } from '@material/list';
const list = new MDCList(document.querySelector('.mdc-list'));
list.listElements.map((listItemEl) => new MDCIconButtonToggle(listItemEl.querySelector('.mdc-icon-button')));
react-list is a versatile library for rendering lists in React applications. It supports infinite scrolling, variable heights, and other advanced features. Compared to @material/list, react-list is more focused on performance and flexibility in rendering large lists, but it does not provide built-in Material Design styling.
react-virtualized is a library for efficiently rendering large lists and tabular data in React. It offers features like lazy loading, infinite scrolling, and dynamic row heights. While it excels in performance for large datasets, it does not include Material Design components like @material/list.
react-window is a lightweight library for rendering large lists and grids in React. It is similar to react-virtualized but with a smaller footprint and simpler API. It focuses on performance and efficiency, but like react-virtualized, it does not provide Material Design styling out of the box.
Lists are continuous, vertical indexes of text or images.
npm install @material/list
<ul class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item">
<span class="mdc-list-item__text">Single-line item</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Single-line item</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Single-line item</span>
</li>
</ul>
You can use the mdc-list--two-line combined with some extra markup around the text to style a list
in the double line list style as defined by
the spec (see "Double line").
<ul class="mdc-list mdc-list--two-line" aria-orientation="vertical">
<li class="mdc-list-item">
<span class="mdc-list-item__text">
<span class="mdc-list-item__primary-text">First-line text</span>
<span class="mdc-list-item__secondary-text">Second-line text</span>
</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">
<span class="mdc-list-item__primary-text">First-line text</span>
<span class="mdc-list-item__secondary-text">Second-line text</span>
</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">
<span class="mdc-list-item__primary-text">First-line text</span>
<span class="mdc-list-item__secondary-text">Second-line text</span>
</span>
</li>
</ul>
NOTE: Make sure there are no white-space characters before primary and secondary text content.
Multiple related lists can be grouped together using the mdc-list-group class on a containing element.
<div class="mdc-list-group">
<h3 class="mdc-list-group__subheader">List 1</h3>
<ul class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item">
<span class="mdc-list-item__text">line item</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">line item</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">line item</span>
</li>
</ul>
<h3 class="mdc-list-group__subheader">List 2</h3>
<ul class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item">
<span class="mdc-list-item__text">line item</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">line item</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">line item</span>
</li>
</ul>
</div>
MDC List contains an mdc-list-divider class which can be used as full-width or inset subdivisions either within lists themselves, or standalone between related groups of content.
<ul class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item">
<span class="mdc-list-item__text">Item 1 - Division 1</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Item 2 - Division 1</span>
</li>
<li role="separator" class="mdc-list-divider"></li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Item 1 - Division 2</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Item 2 - Division 2</span>
</li>
</ul>
NOTE: the role="separator" attribute on the list divider. It is important to include this so that assistive technology can be made aware that this is a presentational element and is not meant to be included as an item in a list. Note that separator is indeed a valid role for li elements.
OR
<ul class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item">
<span class="mdc-list-item__text">Item 1 - List 1</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Item 2 - List 1</span>
</li>
</ul>
<hr class="mdc-list-divider">
<ul class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item">
<span class="mdc-list-item__text">Item 1 - List 2</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Item 2 - List 2</span>
</li>
</ul>
MDC List can handle selecting/deselecting list elements based on click or keyboard action. When enabled, the space and enter keys (or click event) will trigger an
single list item to become selected and any other previous selected element to become deselected.
<ul id="my-list" class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item" tabindex="0">
<span class="mdc-list-item__text">Single-line item</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Single-line item</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Single-line item</span>
</li>
</ul>
var listEle = document.getElementById('my-list');
var list = new mdc.list.MDCList(listEle);
list.singleSelection = true;
When rendering the list with a pre-selected list item, the list item that needs to be selected should contain
the mdc-list-item--selected or mdc-list-item--activated class and aria-selected="true" attribute before
creating the list.
<ul id="my-list" class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item">
<span class="mdc-list-item__text">Single-line item</span>
</li>
<li class="mdc-list-item mdc-list-item--selected" aria-selected="true" tabindex="0">
<span class="mdc-list-item__text">Single-line item</span>
</li>
<li class="mdc-list-item">
<span class="mdc-list-item__text">Single-line item</span>
</li>
</ul>
var listEle = document.getElementById('my-list');
var list = new mdc.list.MDCList(listEle);
list.singleSelection = true;
| CSS Class | Description |
|---|---|
mdc-list | Mandatory, for the list element. |
mdc-list--non-interactive | Optional, disables interactivity affordances. |
mdc-list--dense | Optional, styles the density of the list, making it appear more compact. |
mdc-list--avatar-list | Optional, configures the leading tiles of each row to display images instead of icons. This will make the graphics of the list items larger. |
mdc-list--two-line | Optional, modifier to style list with two lines (primary and secondary lines). |
mdc-list-item | Mandatory, for the list item element. |
mdc-list-item__text | Mandatory. Wrapper for list item text content (displayed as middle column of the list item). |
mdc-list-item__primary-text | Optional, primary text for the list item. Should be the child of mdc-list-item__text. |
mdc-list-item__secondary-text | Optional, secondary text for the list item. Displayed below the primary text. Should be the child of mdc-list-item__text. |
mdc-list-item--selected | Optional, styles the row in an selected* state. |
mdc-list-item--activated | Optional, styles the row in an activated* state. |
mdc-list-item__graphic | Optional, the first tile in the row (in LTR languages, the first column of the list item). Typically an icon or image. |
mdc-list-item__meta | Optional, the last tile in the row (in LTR languages, the last column of the list item). Typically small text, icon. or image. |
mdc-list-group | Optional, wrapper around two or more mdc-list elements to be grouped together. |
mdc-list-group__subheader | Optional, heading text displayed above each list in a group. |
mdc-list-divider | Optional, for list divider element. |
mdc-list-divider--padded | Optional, leaves gaps on each side of divider to match padding of list-item__meta. |
mdc-list-divider--inset | Optional, increases the leading margin of the divider so that it does not intersect the avatar column. |
NOTE:
mdc-list-dividerclass can be used between list items (example 1) OR between two lists (example 2).
NOTE: the difference between selected and activated states:
.mdc-list-item when it is likely to change soon. Eg., selecting one or more photos to share in Google Photos.| Mixin | Description |
|---|---|
mdc-list-item-primary-text-ink-color($color) | Sets the ink color of the primary text of the list item. |
mdc-list-item-secondary-text-ink-color($color) | Sets the ink color of the secondary text of the list item. |
mdc-list-item-graphic-fill-color($color) | Sets background ink color of the graphic element within list item. |
mdc-list-item-graphic-ink-color($color) | Sets ink color of the graphic element within list item. |
mdc-list-item-meta-ink-color($color) | Sets ink color of the meta element within list item. |
mdc-list-item-corner-radius($radius) | Sets the corner border radius of the list item. |
mdc-list-divider-color($color) | Sets divider ink color. |
mdc-list-group-subheader-ink-color($color) | Sets ink color of subheader text within list group. |
The MDCList JavaScript component implements the WAI-ARIA best practices for
Listbox. This includes overriding the default tab behavior
within the list component. You should not add tabindex to any of the li elements in a list.
As the user navigates through the list, any button or a elements within the list will receive tabindex="-1"
when the list item is not focused. When the list item receives focus, the child button and a elements will
receive tabIndex="0". This allows for the user to tab through list item elements and then tab to the
first element after the list. The Arrow, Home, and End keys should be used for navigating internal list elements.
If singleSelection=true, the list will allow the user to use the Space or Enter keys to select or deselect
a list item. The MDCList will perform the following actions for each key press
| Key | Action |
|---|---|
ArrowUp | When the list is in a vertical orientation, it will cause the previous list item to receive focus. |
ArrowDown | When the list is in a vertical orientation, it will cause the next list item to receive focus. |
ArrowLeft | When the list is in a horizontal orientation (default), it will cause the previous list item to receive focus. |
ArrowRight | When the list is in a horizontal orientation (default), it will cause the next list item to receive focus. |
Home | Will cause the first list item in the list to receive focus. |
End | Will cause the last list item in the list to receive focus. |
Space | Will cause the currently focused list item to become selected/deselected if singleSelection=true. |
Enter | Will cause the currently focused list item to become selected/deselected if singleSelection=true. |
If you are using a JavaScript framework, such as React or Angular, you can create a List for your framework. Depending on your needs, you can use the Simple Approach: Wrapping MDC Web Vanilla Components, or the Advanced Approach: Using Foundations and Adapters. Please follow the instructions here.
The MDCListFoundation expects the HTML to be setup a certain way before being used. This setup is a part of the layout() and singleSelection() functions within the index.js.
layout()The default component requires that every list item receives a tabindex value so that it can receive focus
(li elements cannot receive focus at all without a tabindex value). Any element not already containing a
tabindex attribute will receive tabindex=-1. The first list item should have tabindex="0" so that the
user can find the first element using the tab key, but subsequent tab keys strokes will cause focus to
skip over the entire list. If the list items contain sub-elements that are focusable (button or a elements),
these should also receive tabIndex="-1".
<ul id="my-list" class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item" tabindex="0">
<span class="mdc-list-item__text">Single-line item</span>
<button tabindex="-1"></button>
</li>
<li class="mdc-list-item" tabindex="-1">
<span class="mdc-list-item__text">Single-line item</span>
</li>
<li class="mdc-list-item" tabindex="-1">
<span class="mdc-list-item__text">Single-line item</span>
</li>
</ul>
singleSelection()When implementing a component that will use the single selection variant, the HTML should be modified to include
the aria-selected attribute, the mdc-list-item--selected or mdc-list-item--activated class should be added,
and the tabindex of the selected element should be 0. The first list item should have the tabindex updated
to -1. The foundation method setSelectedIndex() should be called with the initially selected element immediately
after the foundation is instantiated.
<ul id="my-list" class="mdc-list" aria-orientation="vertical">
<li class="mdc-list-item" tabindex="-1">
<span class="mdc-list-item__text">Single-line item</span>
<button tabindex="-1"></button>
</li>
<li class="mdc-list-item mdc-list-item--selected" aria-selected="true" tabindex="0">
<span class="mdc-list-item__text">Single-line item</span>
</li>
<li class="mdc-list-item" tabindex="-1">
<span class="mdc-list-item__text">Single-line item</span>
</li>
</ul>
MDCListAdapter| Method Signature | Description |
|---|---|
getListItemCount() => Number | Returns the total number of list items (elements with mdc-list-item class) that are direct children of the root_ element. |
getFocusedElementIndex() => Number | Returns the index value of the currently focused element. |
getListItemIndex(ele: Element) => Number | Returns the index value of the provided ele element. |
setAttributeForElementIndex(index: Number, attr: String, value: String) => void | Sets the attr attribute to value for the list item at index. |
addClassForElementIndex(index: Number, className: String) => void | Adds the className class to the list item at index. |
removeClassForElementIndex(index: Number, className: String) => void | Removes the className class to the list item at index. |
focusItemAtIndex(index: Number) => void | Focuses the list item at the index value specified. |
setTabIndexForListItemChildren(index: Number, value: Number) => void | Sets the tabindex attribute to value for each child button and a element in the list item at the index specified. |
followHref(element: Element) => void | If the given element has an href, follows the link. |
MDCListFoundation| Method Signature | Description |
|---|---|
setWrapFocus(value: Boolean) => void | Sets the list to allow the up arrow on the first element to focus the last element of the list and vice versa. |
setVerticalOrientation(value: Boolean) => void | Sets the list to an orientation causing the keys used for navigation to change. true results in the Up/Down arrow keys being used. false results in the Left/Right arrow keys being used. |
setSingleSelection(value: Boolean) => void | Sets the list to be a selection list. Enables the enter and space keys for selecting/deselecting a list item. |
setSelectedIndex(index: Number) => void | Toggles the selected state of the list item at index index. |
setUseActivated(useActivated: boolean) => void | Sets the selection logic to apply/remove the mdc-list-item--activated class. |
handleFocusIn(evt: Event) => void | Handles the changing of tabindex to 0 for all button and a elements when a list item receives focus. |
handleFocusOut(evt: Event) => void | Handles the changing of tabindex to -1 for all button and a elements when a list item loses focus. |
handleKeydown(evt: Event) => void | Handles determining if a focus action should occur when a key event is triggered. |
handleClick(evt: Event) => void | Handles toggling the selected/deselected state for a list item when clicked. This method is only used by the single selection list. |
focusNextElement(index: Number) => void | Handles focusing the next element using the current index. |
focusPrevElement(index: Number) => void | Handles focusing the previous element using the current index. |
focusFirstElement() => void | Handles focusing the first element in a list. |
focusLastElement() => void | Handles focusing the last element in a list. |
FAQs
The Material Components for the web list component
The npm package @material/list receives a total of 164,573 weekly downloads. As such, @material/list popularity was classified as popular.
We found that @material/list demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 15 open source maintainers collaborating on the project.
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