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The sbb-tooltip component is useful for displaying additional information on mouse hover or click of a trigger element. The information included should be contextual, useful, and provide additional communication and clarity to the user.
Usage
The tooltip can show a simple message and a close button (if the hover-trigger property is configured, the close button is hidden), any content is allowed (including HTML elements):
<!-- Trigger element -->
<sbb-tooltip-trigger id="tooltip-trigger"></sbb-tooltip-trigger>
<!-- Tooltip component with custom content and a link -->
<sbb-tooltip id="tooltip" trigger="tooltip-trigger">
<p id="tooltip-content">
Tooltip content. <sbb-link id="tooltip-link" variant="inline" sbb-tooltip-close>Link</sbb-link>
</p>
</sbb-tooltip>The tooltip can be dismissed by clicking on an interactive element within its content, by clicking on the close button or by performing another action on the page. You can also indicate that an element within the tooltip content should close the tooltip when clicked by marking it with the sbb-tooltip-close attribute.
You can also indicate that the tooltip should be shown on hover with the property hover-trigger and set a custom delay for the open and close animations (defaults to 0). If hover is not supported by the current device, the component will be triggered on click/tap as default:
<!-- Trigger element -->
<sbb-tooltip-trigger id="tooltip-trigger"></sbb-tooltip-trigger>
<!-- Tooltip component with `hover-trigger` property -->
<sbb-tooltip id="tooltip" trigger="tooltip-trigger" hover-trigger open-delay="500" close-delay="750">
<p id="tooltip-content">
Tooltip content. <sbb-link id="tooltip-link" variant="inline">Link</sbb-link>
</p>
</sbb-tooltip>The tooltip will automatically disappear after the hiding delay if neither the trigger element nor the tooltip are on hover or if another action is performed on the page.
The default z-index of the component is set to 1000; to specify a custom stack order, the z-index can be changed by defining the CSS variable --sbb-tooltip-z-index.
Placement
The tooltip automatically calculates where it should place itself, based on available space. Default is below and center.
When to use
- Describe icons and buttons.
- When more information is useful to help a user making decisions.
- When an element needs more context or explanation.
- When defining a term or inline item.
Accessibility
In order to make screen readers announce the tooltip content when the trigger is focused, associate the tooltip trigger with the tooltip via aria-describedby and id as shown below. If the tooltip trigger is a sbb-tooltip-trigger component, set role="button" on it, since the aria-describedby attribute can be used with semantic HTML elements and with elements that have an ARIA role.
<!-- Trigger element -->
<button id="tooltip-trigger" aria-describedby="tooltip-content">Button with tooltip</button>
<!-- Tooltip component -->
<sbb-tooltip id="tooltip" trigger="tooltip-trigger">
<p id="tooltip-content">
Tooltip content. <sbb-link id="tooltip-link" variant="inline">Link</sbb-link>
</p>
</sbb-tooltip>
<!-- Tooltip trigger component -->
<sbb-tooltip-trigger role="button" aria-describedby="tooltip-content" id="tooltip-trigger"></sbb-tooltip-trigger>
<!-- Tooltip component -->
<sbb-tooltip id="tooltip" trigger="tooltip-trigger">
<p id="tooltip-content">
Tooltip content. <sbb-link id="tooltip-link" variant="inline">Link</sbb-link>
</p>
</sbb-tooltip>As the tooltip opens, the focus will automatically be set to the first focusable item within the component.
Properties
| Property | Attribute | Description | Type | Default |
|---|---|---|---|---|
accessibilityCloseLabel | accessibility-close-label | This will be forwarded as aria-label to the close button element. | string | undefined |
closeDelay | close-delay | Close the tooltip after a certain delay. | number | 0 |
disableAnimation | disable-animation | Whether the animation is enabled. | boolean | false |
hideCloseButton | hide-close-button | Whether the close button should be hidden. | boolean | false |
hoverTrigger | hover-trigger | Whether the tooltip should be triggered on hover. | boolean | false |
openDelay | open-delay | Open the tooltip after a certain delay. | number | 0 |
trigger | trigger | The element that will trigger the tooltip dialog. Accepts both a string (id of an element) or an HTML element. | HTMLElement | string | undefined |
Events
| Event | Description | Type |
|---|---|---|
did-close | Emits whenever the tooltip is closed. | CustomEvent<{ closeTarget: HTMLElement; }> |
did-open | Emits whenever the tooltip is opened. | CustomEvent<void> |
will-close | Emits whenever the tooltip begins the closing transition. | CustomEvent<{ closeTarget: HTMLElement; }> |
will-open | Emits whenever the tooltip starts the opening transition. | CustomEvent<void> |
Methods
close(target?: HTMLElement) => Promise<void>
Closes the tooltip.
Returns
Type: Promise<void>
open() => Promise<void>
Opens the tooltip on trigger click.
Returns
Type: Promise<void>
Slots
| Slot | Description |
|---|---|
"unnamed" | Use this slot to project any content inside the tooltip. |
Dependencies
Used by
Depends on
Graph
graph TD;
sbb-tooltip --> sbb-button
sbb-button --> sbb-icon
sbb-datepicker-toggle --> sbb-tooltip
style sbb-tooltip fill:#f9f,stroke:#333,stroke-width:4px