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Bar Overlay

SAIL Design System guidance available for Billboard Layout

When you need to get a user's attention, use the billboard layout. Learn how to broadcast the right message and create powerful, visual prominence for sections that shouldn't be ignored.

Function

a!barOverlay( position, contents, showWhen, style, padding )

Displays a horizontal bar overlay for use in billboard layout.

See also: Billboard, Billboard layout design guidance

Parameters

Name Keyword Types Description

Position

position

Text

Determines where the bar overlay appears. Valid values: "TOP", "MIDDLE", "BOTTOM" (default).

Contents

contents

Any Type

The interface to display in the overlay. Accepts layouts and display components. Supported layouts and components: Box, Button, Card, Columns, Image, Link, Milestone, Progress Bar, Rich Text, Section, Side By Side.

Visibility

showWhen

Boolean

Determines whether the overlay is displayed on the interface. When set to false, the overlay is hidden and is not evaluated. Default: true.

Style

style

Text

Determines the overlay style. Valid values: "DARK" (default), "SEMI_DARK", "NONE", "SEMI_LIGHT", "LIGHT".

Padding

padding

Text

Determines the space between the overlay's edges and its contents. Valid values: "NONE", "EVEN_LESS", "LESS", "STANDARD"(default), "MORE", "EVEN_MORE".

Examples

Click EXPRESSION to copy and paste an example into the Interface Definition to see it displayed.

Bar overlay with intro message

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a!billboardLayout(
  backgroundcolor: "#073763",
  marginBelow: "STANDARD",
  overlay: a!barOverlay(
    position: "MIDDLE",
    contents: {
      a!richTextDisplayField(
        labelPosition: "COLLAPSED",
        value: {
          a!richTextItem(text: {"Hello, " & user(loggedinuser(), "firstName") & "."}, size: "MEDIUM"),
          char(10),
          a!richTextItem(text: {"What do you need help with?"}, size: "LARGE")
        },
        align: "CENTER"
      )
    },
    style: "DARK"
  )
)

Displays the following:

Bar Overlay Example

Feature compatibility

The table below lists this component's compatibility with various features in Appian.
Feature Compatibility Note
Portals Compatible
Offline Mobile Compatible
Sync-Time Custom Record Fields Incompatible
Real-Time Custom Record Fields Incompatible

Custom record fields that evaluate in real time must be configured using one or more Custom Field functions.
Process Reports Incompatible

Cannot be used to configure a process report.
Process Events Incompatible

Cannot be used to configure a process event node, such as a start event or timer event.

The following patterns include usage of the Bar Overlay.

  • Cards as List Items Patterns (Choice Components, Images): Use the cards as list items pattern to create visually rich lists as an alternative to grids or feeds. This pattern uses a combination of cards and billboards to show lists of like items. You can easily modify the pattern to change the card content or the number of cards per row to fit your use case.

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