Rich Tooltip

A Rich Tooltip displays extra supplemental information about a UI element. It's similar to the "standard" Tooltip but is intended to be used for more complex or structured content instead of simple text. More details are outlined in Rich Tooltip vs. Tooltip.

Usage

When to use

• For adding extra information, in the form of structured content, to a UI element.
• When it’s necessary to temporarily persist extra information in the UI; e.g., if the user benefits from cross-referencing information in the component with other elements in the UI.

When not to use

• For extra information that consists of basic text, consider using the Tooltip instead.
• For complex functions that change or alter the UI, consider a Dropdown instead.
• As a double-confirmation for destructive actions, use a Modal instead.
• If the information is essential to the user completing a task, consider placing this information within the page and associated with a specific UI element.

Rich Tooltip vs. Tooltip

While there is overlap with the Tooltip, the majority of use cases can be categorized one of two ways:

1. Tooltip: simple, text-based content supporting basic formatting (italic, bold, monospace, etc).
2. Rich Tooltip: relatively more complex, supporting temporary persistence and structured content, links, micro-interactions, diagrams, etc

View more detailed examples of the content the Rich Tooltip could contain in the content section.

Placement

A Rich Tooltip can be placed in various positions relative to the UI element it is associated with.

The most common options are: top, bottom, left, right.

The Rich Tooltip supports additional placement options: top-start, top-end, bottom-start, bottom-end, left-start, left-end, right-start,and right-end.

Collision detection

The Rich Tooltip supports collision detection, meaning the placement property might be overridden depending on the position of the component relative to the edge of the viewport. This ensures that the component doesn't extend outside of the viewport while still being associated with the toggle element.

Offset

The default recommended distance between the toggle and the Rich Tooltip pointer is 4px.

Interaction

The Rich Tooltip supports two interaction methods: a On hover / On focus ("soft") interaction and a On click interaction. Which one to use depends on:

• The type and complexity of content displayed by the component.
• Whether temporarily persisting the content in the UI is necessary or beneficial to the user.

Independent of which interaction is used, the Rich Tooltip can be dismissed by clicking outside of the component or with the ESC key.

Toggle

Default

By default, we provide a Toggle component which should be used in the majority of cases along with the Rich Tooltip. This component ensures that the toggle is perceivable, visually consistent, and can be used inline with other content or standalone as part of the layout flow.

How to use

Consider these guidelines when using the default Toggle component:

Size

The Toggle is available in small, medium, and large sizes in both the Ember and Figma components. If used in a paragraph of text, the Ember component will inherit the size from the surrounding text.

Icon

An icon can be used in the Toggle in either the leading or trailing position, or on its own when paired with another element as a label.

Underline

Only available as a component in Figma, the ToggleUnderline component can be used inline a block of text like a paragraph.

Custom toggle

If absolutely necessary, toggling the Rich Tooltip using a custom element is supported but should be used sparingly and conform to the following usability and accessibility success criteria:

• Must have a minimum target area of 24x24 pixels.
• Must have a minimum contrast ratio between the background/surface color of 3:1.
• Should use actionable language or be paired with a label to communicate that additional context is hidden from the user.

More information about this success criteria can be found in the accessibility section.

Content

The Rich Tooltip is built to be flexible enough to support a variety of use cases and content. Consider these common examples when determining whether it's appropriate for your use case.

Text with links

This is a common use case for a Rich Tooltip due to the lack of support for interactive content in the Tooltip.

Structured content

Compared to the "standard" Tooltip, the Rich Tooltip supports more structure and layout methods to better organize the content hierarchically.

Key-value pairs

Use the Rich Tooltip to display supplemental key-value pairs or metadata related to an element.

Overflow content

The Rich Tooltip component associates a toggle element with a tooltip element that contains generic content. "Soft" (hover/focus) or click event listeners can be assigned to the toggle, which toggle the tooltip's visibility, which appears as a popover on top of the page content. The tooltip can be closed by re-triggering the toggle events, clicking outside the popover, or pressing the esc key.

While the Rich Tooltip may seem to be a fairly simple component, there is a lot of complexity beneath the surface:

• The component uses the native web Popover API to display the tooltip content as a popover on top of the page.
• A third-party library called Floating UI provides the anchoring of the "popover" to the "toggle" element and the automatic positioning/collision detection functionality.
• These functionalities are abstracted into two HDS utilities (the hds-anchored-position modifier and the PopoverPrimitive component), which the Rich Tooltip component is built on top of.

As tooltips are notoriously difficult to implement in an accessible way, we have intentionally limited some of the ways in which the Rich Tooltip can be used, while at the same time providing an alternative if some edge cases need to be supported (but in this case, consumers will need to make sure the component is used in a conformant and accessible way).

The component provides several options to customize its behavior. Below we have tried to describe the most common examples, but if you find a use case that is not supported by the existing Rich Tooltip implementation, please speak with the Design System team.

How to use this component

When using this component, there are a few things to consider:

• what toggle to use; the standard toggle or a generic toggle
• if the toggle is a standalone element or instead lives inline with other text
• how the end-user should interact with the toggle to show/hide the tooltip

Depending on these factors, there are different ways to implement the code, as described in the alternatives below.

Standard toggle

The standard Toggle element ensures perceivability and accessibility out of the box. It consist of a piece of text (with an underline decoration applied to it) and an optional icon. The icon can be leading or trailing, and its size is always proportional to the font size of the text (1em).

The text and icon are rendered inside an HTML <button> element (which technically acts as a toggling control for the popover). For details about how the user can interact with this button, see the Interactivity sub-section.

The Bubble element is a pure container that yields the children inside the "popover" tooltip bubble. Consumers can pass whatever content they need to it, but they are responsible for styling and structuring it according to their needs/context.

As a standalone element

By default, the Toggle element is rendered as a block. This means it can easily be used as a standalone UI element.

As mentioned above, the invocation requires a "toggle" and a "bubble" element to be passed as yielded sub-components. The "toggle" accepts a @text argument and an optional @icon argument. The "bubble" element instead yields its content inside the popover tooltip:

<Hds::RichTooltip as |RT|>
  <RT.Toggle @text="More info" @icon="info" />
  <RT.Bubble>
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>

As one can see, by default the text of the toggle doesn't get a typographic style (it inherits it from the parent).

Size

To apply a predefined typographic style, it's necessary to pass a @size argument:

<Hds::RichTooltip as |RT|>
  <RT.Toggle @size="large" @text="More info" @icon="info" />
  <RT.Bubble>
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>

Visual organization

To align the toggle with other UI elements, consumers should use a parent element that wraps the content and provides the desired layout (e.g., using flexbox):

<div class="doc-rich-tooltip-standalone-block-flex-layout">
  <Hds::Button @text="Your action" {{on "click" this.onClickButton}} />
  <Hds::RichTooltip as |RT|>
    <RT.Toggle @size="medium" @text="More info" @icon="info" />
    <RT.Bubble>
      <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
      <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
    </RT.Bubble>
  </Hds::RichTooltip>
</div>

Inline with other text

If the toggle needs to be inline with other text, use the @isInline argument:

Lorem
<Hds::RichTooltip as |RT|>
  <RT.Toggle @isInline={{true}} @text="ipsum dolor" />
  <RT.Bubble>
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>
sit amet consectetur adipiscing elit.

In this case, it is better not to assign a @size to the Toggle, so that its typographic style is the same as the text that comes before/after the toggle text.

To apply a typographic style to the whole paragraph, consumers can use a Text component as a wrapper:

<Hds::Text::Body @tag="p" @size="300">
  Lorem
  <Hds::RichTooltip as |RT|>
    <RT.Toggle @isInline={{true}} @text="ipsum dolor" />
    <RT.Bubble>
      <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
      <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
    </RT.Bubble>
  </Hds::RichTooltip>
  sit amet consectetur adipiscing elit.
</Hds::Text::Body>

Similarly, a typographic class (or a custom CSS class) can be applied to a parent container.

Whitespace issues

There may be cases in which the tooltip text is preceded/followed by non-whitespace characters. In this case, extra whitespace could appear between these characters and the toggle text. Unfortunately the only solution we have found is to remove all whitespace before/after the <Hds::RichTooltip> tag, and before/after the <RT.Toggle> and <RT.Bubble> tags:

<Hds::Text::Body @tag="p" @size="300">
  Lorem "<Hds::RichTooltip as |RT|><RT.Toggle @isInline={{true}} @text="ipsum dolor" /><RT.Bubble>
      <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
      <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
    </RT.Bubble></Hds::RichTooltip>" sit amet consectetur adipiscing elit.
</Hds::Text::Body>

Interactivity

By default, the visibility of the tooltip is toggled via "soft" event listeners (hover/focus) applied to the toggle container. Note: from a purely technical standpoint, the actual events used are mouseEnter/Leave and focusIn/Out.

To change this behavior and opt for a more explicit user interaction using click events (in this case the "soft" events are disabled) set the argument @enableClickEvents to true:

<Hds::RichTooltip @enableClickEvents={{true}} as |RT|>
  <RT.Toggle @size="medium" @text="More info" @icon="info" />
  <RT.Bubble>
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>

Independent of which interaction is used, the tooltip can be dismissed by clicking outside of the component or with the esc key (this "light dismiss" behavior is automatically provided by the Popover API).

Placement

By default the tooltip is shown below the toggle, visually centered. It's possible to change the initial position of the tooltip using the @placement argument:

<Hds::RichTooltip as |RT|>
  <RT.Toggle @size="medium" @text="Lorem ipsum" @icon="info" />
  <RT.Bubble @placement="top-start">
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information that spans multiple lines</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>

Collision detection

The RichTooltip component automatically adapts its alignment depending on its position relative to the viewport to avoid collisions with the browser window boundaries. This means that when an end-user scrolls the page, or resizes the browser, the position of the tooltip on the page dynamically adapts to these changes (along the two axes, main and secondary).

It's possible to disable this behavior by setting the @enableCollisionDetection argument to false.

It's also possible to customize this behaviour using the values:

• flip - adapts the position only along its axis of alignment
• shift - adapts the position only along its side axis
• auto - uses the side where there is more space available (in relation to the viewport)

The default option is a combination of flip+shift and is the suggested one, but there may be use cases where the other options work better in a specific context/use case.

In the example below, we use an auto placement: try scrolling and/or resizing the page and see how the tooltip changes its position automatically:

<Hds::RichTooltip @enableClickEvents={{true}} as |RT|>
  <RT.Toggle @size="medium" @text="More info" @icon="info" />
  <RT.Bubble @enableCollisionDetection="auto">
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information that spans multiple lines</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>

Fixed width/height

By default, the size of the tooltip automatically adapts to the size of its content (with a max-width of 280px). It's possible to assign a fixed width and/or height to the tooltip by providing the @width or @height arguments:

<Hds::RichTooltip as |RT|>
  <RT.Toggle @size="medium" @text="More info" @icon="info" />
  <RT.Bubble @width="450px" @height="200px">
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>

Generic toggle

There may be special use cases in which the standard text or icon-based toggle doesn't work in a specific context or design. For this reason, custom content can be yielded to the Toggle element, but this should be considered an option of last resort, because it could result in a non-accessible implementation.

<Hds::RichTooltip as |RT|>
  <RT.Toggle>
    <Hds::Tag @text="My text tag" />
  </RT.Toggle>
  <RT.Bubble>
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>

Advanced options

There might be special use cases in which consumers may need to fine tune the Rich Tooltip behaviour. Below we provide some some examples.

Offset

The default spacing between the toggle and the tooltip itself can be tweaked using the @offset argument:

<Hds::RichTooltip as |RT|>
  <RT.Toggle @size="medium" @text="More info" @icon="info" />
  <RT.Bubble @offset={{24}}>
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>

isOpen

The tooltip can be rendered as initially opened using the @isOpen argument:

<Hds::RichTooltip @isOpen={{true}} as |RT|>
  <RT.Toggle @size="medium" @text="More info" @icon="info" @iconPosition="leading" />
  <RT.Bubble @placement="right">
    <Hds::Text::Display @tag="h4" @size="200">Some title</Hds::Text::Display>
    <Hds::Text::Body @tag="p" @size="200">Some descriptive information</Hds::Text::Body>
  </RT.Bubble>
</Hds::RichTooltip>

Component API

Contextual components

The Toggle and Bubble elements are passed into the Rich Tooltip as yielded components, using the Toggle and Bubble keys.

RichTooltip::Toggle

Standard toggle element to use, consisting of a text string and an optional icon, to ensure that the toggle is perceivable, visually consistent, and can be used inline with other content or standalone as part of the layout flow.

It can also be used with generic content, in which case consumers will need to ensure the component is used in a conformant accessible way.

RichTooltip::Bubble

Generic container that yields its content inside the "tooltip" popover element.

Anatomy

Rich Tooltip

Toggle

States

Conformance rating

To be accessible, the toggle which activates the tooltip must be a minimum of 24 × 24 pixels in dimension unless used within a full sentence or paragraph of text. Care must be taken to ensure there is enough space around the toggle so it does not overlap neighboring content.

Applicable WCAG Success Criteria

This section is for reference only. This component intends to conform to the following WCAG Success Criteria:

Support

If any accessibility issues have been found within this component, let us know by submitting an issue.