Class CardBuilder

  • CardBuilder is used to build Card objects.

  • You can add card actions and sections to a Card using the builder.

  • The build() method finalizes and validates the Card object.

  • Various methods allow setting the card's display style, footer, header, name, and peek card header.

CardBuilder

A builder forCard objects.

Methods

MethodReturn typeBrief description
addCardAction(cardAction)CardBuilderAdds aCardAction to this Card.
addExpressionData(expressionData)CardBuilderAdds an expression data to this card.
addSection(section)CardBuilderAdds a section to this card.
build()CardBuilds the current card and validates it.
setDisplayStyle(displayStyle)CardBuilderSets the display style for this card.
setFixedFooter(fixedFooter)CardBuilderSets a fixed footer for this card.
setHeader(cardHeader)CardBuilderSets the header for this card.
setName(name)CardBuilderSets the name for this card.
setPeekCardHeader(peekCardHeader)CardBuilderSets the peek card header.

Detailed documentation

addCardAction(cardAction)

Adds aCardAction to this Card.

Parameters

NameTypeDescription
cardActionCardActionTheCardAction to use.

Return

CardBuilder — This object, for chaining.


addExpressionData(expressionData)

Adds an expression data to this card.

The ExpressionData defines the CEL logic and condition as well as what event to trigger whena condition is satisfied.

Parameters

NameTypeDescription
expressionDataExpressionDataTheExpressionData to use.

Return

CardBuilder — This object, for chaining.


addSection(section)

Adds a section to this card. You can't add more than 100 sections to a card.

Parameters

NameTypeDescription
sectionCardSectionTheCardSection to use.

Return

CardBuilder — This object, for chaining.


build()

Builds the current card and validates it.

Return

Card — A validated card.

Throws

Error — if the constructed card isn't valid.


setDisplayStyle(displayStyle)

Sets the display style for this card.

If the display style is set toDisplayStyle.REPLACE, the card is shown by replacingthe view of top card in the card stack.

If the display style is set toDisplayStyle.PEEK, the header of the card appears atthe bottom of the sidebar, partially covering the current top card of the stack. Clicking theheader pops the card into the card stack. If the card has no header, a generated header is usedinstead.

DisplayStyle only works for card returned from contextual trigger function.

Parameters

NameTypeDescription
displayStyleDisplayStyleTheDisplayStyle to set.

Return

CardBuilder — This object, for chaining.


setFixedFooter(fixedFooter)

Sets a fixed footer for this card.

Parameters

NameTypeDescription
fixedFooterFixedFooterTheFixedFooter to use.

Return

CardBuilder — This object, for chaining.


setHeader(cardHeader)

Sets the header for this card.

Parameters

NameTypeDescription
cardHeaderCardHeaderTheCardHeader to use.

Return

CardBuilder — This object, for chaining.


setName(name)

Sets the name for this card. The name can be used fornavigation.

Parameters

NameTypeDescription
nameStringThe name.

Return

CardBuilder — This object, for chaining.


setPeekCardHeader(peekCardHeader)

Sets the peek card header.

The peek card is set on the first card returned from a contextual trigger function. It isused as a descriptive placeholder widget so that users can navigate from a homepage stack tothe contextual stack.

Parameters

NameTypeDescription
peekCardHeaderCardHeaderTheCardHeader to set.

Return

CardBuilder — This object, for chaining.

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Last updated 2025-12-03 UTC.