expansionIndicatorBuilder property

ExpansionIndicatorBuilder expansionIndicatorBuilder

Builder function for building the expansion indicator. It takes a Tree and builds the expansion indicator based on whether the tree node is expanded or not.

The built-in ExpansionIndicators are:

• ChevronIndicator.rightDown
• ChevronIndicator.upDown
• PlusMinusIndicator
• NoExpansionIndicator

To create your own ExpansionIndicator, simply extend the ExpansionIndicator class.

In order to not show any expansion indicator just pass noExpansionIndicatorBuilder ** By default _defExpansionIndicatorBuilder is used to build expansion indicator

Implementation

final ExpansionIndicatorBuilder expansionIndicatorBuilder;