com.vaadin.ui

Interface SingleComponentContainer

All Superinterfaces:

ClientConnector, Component, Connector, HasComponents, HasComponents.ComponentAttachDetachNotifier, Iterable<Component>, Serializable, Sizeable

All Known Implementing Classes:

AbstractSingleComponentContainer, ColorPickerPopup, LegacyWindow, LoginForm, Panel, UI, Window

public interface SingleComponentContainer
extends HasComponents, HasComponents.ComponentAttachDetachNotifier

Interface for 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.

Since:

7.0

Nested Class Summary

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

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

Nested classes/interfaces inherited from interface com.vaadin.ui.Component

Component.ErrorEvent, Component.Event, Component.Focusable, Component.Listener

Nested classes/interfaces inherited from interface com.vaadin.server.ClientConnector

ClientConnector.AttachEvent, ClientConnector.AttachListener, ClientConnector.ConnectorErrorEvent, ClientConnector.DetachEvent, ClientConnector.DetachListener

Nested classes/interfaces inherited from interface com.vaadin.server.Sizeable

Sizeable.Unit

Field Summary

Fields inherited from interface com.vaadin.server.Sizeable

SIZE_UNDEFINED, UNITS_CM, UNITS_EM, UNITS_EX, UNITS_INCH, UNITS_MM, UNITS_PERCENTAGE, UNITS_PICAS, UNITS_PIXELS, UNITS_POINTS

Method Summary

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

Methods inherited from interface com.vaadin.ui.HasComponents

iterator

Methods inherited from interface com.vaadin.ui.Component

addListener, addStyleName, attach, getCaption, getDescription, getIcon, getId, getLocale, getParent, getPrimaryStyleName, getStyleName, getUI, isEnabled, isReadOnly, isVisible, readDesign, removeListener, removeStyleName, setCaption, setEnabled, setIcon, setId, setParent, setPrimaryStyleName, setReadOnly, setStyleName, setVisible, writeDesign

Methods inherited from interface com.vaadin.server.ClientConnector

addAttachListener, addDetachListener, beforeClientResponse, detach, encodeState, getErrorHandler, getExtensions, getRpcManager, getStateType, handleConnectorRequest, isAttached, isConnectorEnabled, markAsDirty, markAsDirtyRecursive, removeAttachListener, removeDetachListener, removeExtension, requestRepaint, requestRepaintAll, retrievePendingRpcCalls, setErrorHandler

Methods inherited from interface com.vaadin.shared.Connector

getConnectorId

Methods inherited from interface com.vaadin.server.Sizeable

getHeight, getHeightUnits, getWidth, getWidthUnits, setHeight, setHeight, setHeightUndefined, setSizeFull, setSizeUndefined, setWidth, setWidth, setWidthUndefined

Methods inherited from interface java.lang.Iterable

forEach, spliterator

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

addComponentAttachListener, addComponentDetachListener, removeComponentAttachListener, removeComponentDetachListener

Method Detail

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

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(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.