sp-menu-item

NPM 1.0.1

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Overview API

Description

For use within an <sp-menu> element, an <sp-menu-item> represents a single item in a menu.

Usage

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yarn add @spectrum-web-components/menu

Import the side effectful registration of <sp-menu-item> as follows:

import '@spectrum-web-components/menu/sp-menu-item.js';

When looking to leverage the MenuItem base class as a type and/or for extension purposes, do so via:

import { MenuItem } from '@spectrum-web-components/menu';

Anatomy

Menus are a collection of <sp-menu-item>s that can be modified via a disabled or selected attribute to represent an item in that state.

<sp-menu selectable>
    <sp-menu-item>Active Menu Item</sp-menu-item>
    <sp-menu-item disabled>Disabled Menu Item</sp-menu-item>
    <sp-menu-item selected>Selected Menu Item</sp-menu-item>
</sp-menu>

Icon

Content assigned to the icon slot will be placed at the beginning of the <sp-menu-item>.

<sp-menu style="width: 200px;">
    <sp-menu-item>
        <sp-icon-save-floppy slot="icon"></sp-icon-save-floppy>
        Save
    </sp-menu-item>
    <sp-menu-item>
        <sp-icon-stopwatch slot="icon"></sp-icon-stopwatch>
        Finish
    </sp-menu-item>
    <sp-menu-item>
        <sp-icon-user-activity slot="icon"></sp-icon-user-activity>
        Review
    </sp-menu-item>
</sp-menu>
Icon management

When you use <sp-menu-item> elements without text content, you will need to be sure to use the value attribute so that the <sp-picker> or <sp-menu> element can differentiate between the available options. Further, it is important that you apply accessible labeling to the [slot="icon"] content as follows:

<sp-field-label for="picker-icons-only">Choose an action...</sp-field-label>
<sp-picker
    label="What would you like to do?"
    value="item-2"
    id="picker-icons-only"
>
    <sp-menu-item value="item-1">
        <sp-icon-save-floppy slot="icon" label="Save"></sp-icon-save-floppy>
    </sp-menu-item>
    <sp-menu-item value="item-2">
        <sp-icon-stopwatch slot="icon" label="Finish"></sp-icon-stopwatch>
    </sp-menu-item>
    <sp-menu-item value="item-3">
        <sp-icon-user-activity
            slot="icon"
            label="Review"
        ></sp-icon-user-activity>
    </sp-menu-item>
</sp-picker>

Description

Content assigned to the description slot will be placed below the <sp-menu-item>, like help text for users to understand the context of corresponding <sp-menu-item>.

<sp-menu style="width: 200px;">
    <sp-menu-item>
        Quick export
        <span slot="description">Share a snapshot</span>
    </sp-menu-item>
    <sp-menu-item>
        Open a copy
        <span slot="description">Illustrator for iPad</span>
    </sp-menu-item>
    <sp-menu-item>
        Share link
        <span slot="description">Enable comments and download</span>
    </sp-menu-item>
</sp-menu>

Value

Value slot

Content assigned to the value slot will be placed at the end of the <sp-menu-item>, like values, keyboard shortcuts, etc., based on the current text direction.

<sp-menu style="width: 200px;">
    <sp-menu-item>
        Save
        <kbd slot="value">⌘S</kbd>
    </sp-menu-item>
    <sp-menu-item>
        Completed
        <span slot="value">47%</span>
    </sp-menu-item>
    <sp-menu-item>
        Activity
        <sp-link slot="value" href="#">More&nbsp;info</sp-link>
    </sp-menu-item>
</sp-menu>

Value attribute

When displayed as a descendent of an element that manages selection (e.g. <sp-action-menu>, <sp-picker>, <sp-split-button>, etc.), an <sp-menu-item> will represent the "selected" value of that ancestor when its value attribute or the trimmed textContent (represeted by el.itemText) matches the value of the ancestor element.

In the following example, the selected <sp-menu-item> represents a value of "Text that is really long and useful to a visitor, but not exactly good to use in your application or component state." for the ancestor element.

Picker 
<sp-field-label for="picker-content">Value attribute usage:</sp-field-label>
<sp-picker
    id="picker-content"
    label="Menu items examples"
    value="Text that is really long and useful to a visitor, but not exactly good to use in your application or component state."
>
    <sp-menu-item>
        Text that is really long and useful to a visitor, but not exactly good
        to use in your application or component state.
    </sp-menu-item>
    <sp-menu-item>Not selected</sp-menu-item>
</sp-picker>
 Action menu 
<sp-action-menu
    value="Text that is really long and useful to a visitor, but not exactly good to use in your application or component state."
>
    <span slot="label">Menu items examples</span>
    <sp-menu-item>
        Text that is really long and useful to a visitor, but not exactly good
        to use in your application or component state.
    </sp-menu-item>
    <sp-menu-item>Not selected</sp-menu-item>
</sp-action-menu>

When the value attribute is leveraged, the selected <sp-menu-item> represents a value of "short-key" for the <sp-action-menu> element.

Picker 
<sp-field-label for="picker-value">Value attribute usage:</sp-field-label>
<sp-picker id="picker-value" value="short-key">
    <span slot="label">Menu items examples</span>
    <sp-menu-item value="not-selected">Not selected</sp-menu-item>
    <sp-menu-item value="short-key">
        Text that is really long and useful to a visitor, but not exactly good
        to use in your application or component state.
    </sp-menu-item>
</sp-picker>
 Action menu 
<sp-action-menu value="short-key">
    <span slot="label">Menu items examples</span>
    <sp-menu-item value="not-selected">Not selected</sp-menu-item>
    <sp-menu-item value="short-key">
        Text that is really long and useful to a visitor, but not exactly good
        to use in your application or component state.
    </sp-menu-item>
</sp-action-menu>

Submenu

An <sp-menu-item> can also accept content addressed to its "submenu" slot. An <sp-menu> element with this slot name surfaces the options in an adjacent popover, which can be activated by hovering over the parent menu item with your pointer or focusing the menu item and pressing the appropriate ArrowRight or ArrowLeft key based on text direction to move into the submenu.

<sp-menu style="width: 200px;">
    <sp-menu-item>
        Item with submenu
        <sp-menu slot="submenu">
            <sp-menu-item>Additional options</sp-menu-item>
            <sp-menu-item>Available on request</sp-menu-item>
        </sp-menu>
    </sp-menu-item>
</sp-menu>

Note: While sp-menu-item can accommodate any custom content in the submenu slot, it will not handle selection or keyboard navigation for such content. To ensure proper management of selection and keyboard navigation, it is recommended to use sp-menu within the submenu slot```

<sp-menu style="width: 200px;">
    <sp-menu-item>
        Item with arbitrary content in submenu
        <div role="menuitem" slot="submenu" style="padding: 12px">
            <img
                src="https://placekitten.com/200/200"
                alt="Kitten"
                style="width: 100%; height: auto; border-radius: 4px"
            />
            <p>I am an arbitrary content in submenu</p>
        </div>
    </sp-menu-item>
</sp-menu>

Value attribute

When displayed as a descendent of an element that manages selection (e.g. <sp-action-menu>, <sp-picker>, etc.), an <sp-menu-item> will represent the "selected" value of that ancestor when its value attribute or the trimmed textContent (represeted by el.itemText) matches the value of the ancestor element.

In the following example, the selected <sp-menu-item> represents a value of Text that is really long and useful to a visitor, but not exactly good to use in your application or component state. for the ancestor element.

<sp-menu style="width: 200px;">
    <sp-menu-item>
        Item with arbitrary content in submenu
        <div role="menuitem" slot="submenu" style="padding: 12px">
            <img
                src="https://placekitten.com/200/200"
                alt="Kitten"
                style="width: 100%; height: auto; border-radius: 4px"
            />
            <p>I am an arbitrary content in submenu</p>
        </div>
    </sp-menu-item>
</sp-menu>

Note: While sp-menu-item can accommodate any custom content in the submenu slot, it will not handle selection or keyboard navigation for such content. To ensure proper management of selection and keyboard navigation, it is recommended to use sp-menu within the submenu slot```

<sp-menu style="width: 200px;">
    <sp-menu-item>
        Item with arbitrary content in submenu
        <div role="menuitem" slot="submenu" style="padding: 12px">
            <img
                src="https://placekitten.com/200/200"
                alt="Kitten"
                style="width: 100%; height: auto; border-radius: 4px"
            />
            <p>I am an arbitrary content in submenu</p>
        </div>
    </sp-menu-item>
</sp-menu>

Accessibility

Review the accessibility guidelines for the parent menu and menu-group.

Include a label

Either place visible text in the component's slot or use label attribute to ensure menu items can be read by assistive technology.

Using slotted text 
<sp-field-label for="picker-icons-only">Choose an action...</sp-field-label>
<sp-picker
    label="What would you like to do?"
    value="item-2"
    id="picker-icons-only"
>
    <sp-menu-item value="item-1">
        <sp-icon-save-floppy slot="icon"></sp-icon-save-floppy>
        Save
    </sp-menu-item>
    <sp-menu-item value="item-2">
        <sp-icon-stopwatch slot="icon"></sp-icon-stopwatch>
        Finish
    </sp-menu-item>
    <sp-menu-item value="item-3">
        <sp-icon-user-activity slot="icon"></sp-icon-user-activity>
        Review
    </sp-menu-item>
</sp-picker>
 Using label attribute 
<sp-field-label for="picker-icons-only">Choose an action...</sp-field-label>
<sp-picker
    label="What would you like to do?"
    value="item-2"
    id="picker-icons-only"
>
    <sp-menu-item value="item-1">
        <sp-icon-save-floppy slot="icon" label="Save"></sp-icon-save-floppy>
    </sp-menu-item>
    <sp-menu-item value="item-2">
        <sp-icon-stopwatch slot="icon" label="Finish"></sp-icon-stopwatch>
    </sp-menu-item>
    <sp-menu-item value="item-3">
        <sp-icon-user-activity
            slot="icon"
            label="Review"
        ></sp-icon-user-activity>
    </sp-menu-item>
</sp-picker>

Attributes and Properties

Property Attribute Type Default Description active active boolean false disabled disabled boolean false Disable this control. It will not receive focus or events download download string | undefined Causes the browser to treat the linked URL as a download. focused focused boolean false hasSubmenu has-submenu boolean false href href string | undefined The URL that the hyperlink points to. label label string | undefined An accessible label that describes the component. It will be applied to aria-label, but not visually rendered. noWrap no-wrap boolean false open open boolean false referrerpolicy referrerpolicy | 'no-referrer' | 'no-referrer-when-downgrade' | 'origin' | 'origin-when-cross-origin' | 'same-origin' | 'strict-origin' | 'strict-origin-when-cross-origin' | 'unsafe-url' | undefined How much of the referrer to send when following the link. rel rel string | undefined The relationship of the linked URL as space-separated link types. selected selected boolean false tabIndex tabIndex number The tab index to apply to this control. See general documentation about the tabindex HTML property target target '_blank' | '_parent' | '_self' | '_top' | undefined Where to display the linked URL, as the name for a browsing context (a tab, window, or <iframe>). value value string

Slots

Name Description default slot text content to display within the Menu Item description description to be placed below the label of the Menu Item icon icon element to be placed at the start of the Menu Item submenu content placed in a submenu value content placed at the end of the Menu Item like values, keyboard shortcuts, etc.

Events

Name Type Description undefined MenuItemAddedOrUpdatedEvent sp-menu-item-added Event announces the item has been added so a parent menu can take ownerships