Package com.vaadin.classic.v8.ui

Interface SingleComponentContainer

All Superinterfaces:

HasComponents, HasComponents.ComponentAttachDetachNotifier, Iterable<com.vaadin.flow.component.Component>, Serializable

All Known Implementing Classes:

AbstractSingleComponentContainer, Panel

public interface SingleComponentContainer
extends HasComponents, HasComponents.ComponentAttachDetachNotifier

Interface for classic component containers that have one child component and do not support adding or removing components. For component containers that support multiple children, see ComponentContainer instead.

Nested Class Summary

Nested classes/interfaces inherited from interface com.vaadin.classic.v8.ui.HasComponents

HasComponents.ComponentAttachDetachNotifier, HasComponents.ComponentAttachEvent, HasComponents.ComponentAttachListener, HasComponents.ComponentDetachEvent, HasComponents.ComponentDetachListener

Method Summary

Modifier and Type	Method	Description
int	getComponentCount()	Gets the number of children this SingleComponentContainer has.
com.vaadin.flow.component.Component	getContent()	Gets the content of this container.
void	setContent(com.vaadin.flow.component.Component content)	Sets the content of this container.

Methods inherited from interface com.vaadin.classic.v8.ui.HasComponents

iterator

Methods inherited from interface com.vaadin.classic.v8.ui.HasComponents.ComponentAttachDetachNotifier

addComponentAttachListener, addComponentDetachListener

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Details

getComponentCount

int getComponentCount()

Gets the number of children this SingleComponentContainer has. This must be symmetric with what HasComponents.iterator() returns and thus typically return 1 if the content is set, 0 otherwise.

Returns:

The number of child components this container has.

getContent

com.vaadin.flow.component.Component getContent()

Gets the content of this container. The content is a component that serves as the outermost item of the visual contents.

Returns:

a component to use as content

See Also:

• setContent(Component)

setContent

void setContent(com.vaadin.flow.component.Component content)

Sets the content of this container. The content is a component that serves as the outermost item of the visual contents. The content should always be set, either as a constructor parameter or by calling this method.