MultiChildRenderObjectWidget class abstract

A superclass for RenderObjectWidgets that configure RenderObject subclasses that have a single list of children. (This superclass only provides the storage for that child list, it doesn't actually provide the updating logic.)

Subclasses must use a RenderObject that mixes in ContainerRenderObjectMixin, which provides the necessary functionality to visit the children of the container render object (the render object belonging to the children widgets). Typically, subclasses will use a RenderBox that mixes in both ContainerRenderObjectMixin and RenderBoxContainerDefaultsMixin.

Subclasses must implement createRenderObject and updateRenderObject.

See also:

• Stack, which uses MultiChildRenderObjectWidget.
• RenderStack, for an example implementation of the associated render object.
• SlottedMultiChildRenderObjectWidget, which configures a RenderObject that instead of having a single list of children organizes its children in named slots.