Class ViewMetadata

Constructor Detail

• ViewMetadata

  public ViewMetadata()

Method Detail

• getViewId

  public abstract String getViewId()

  Returns:

  the view ID for which this ViewMetadata instance was created

• createMetadataView

  public abstract UIViewRoot createMetadataView(FacesContext context)

  Creates a new UIViewRoot containing only view parameter metadata. The processing of building this UIViewRoot with metadata should not cause any events to be published to the application. The implementation must call FacesContext.setProcessingEvents(boolean) passing false as the argument, at the beginning of the method, and pass true to the same method at the end. The implementation must ensure that this happens regardless of ant exceptions that may be thrown.

  Parameters:

  context - the FacesContext for the current request

  Returns:

  a UIViewRoot containing only view parameter metadata (if any)

• getViewParameters

  public static Collection<UIViewParameter> getViewParameters(UIViewRoot root)

  Utility method to extract view metadata from the provided UIViewRoot.

  Parameters:

  root - the UIViewRoot from which the metadata will be extracted.

  Returns:

  a Collection of UIViewParameter instances. If the view has no metadata, the collection will be empty.

• getViewActions

  public static Collection<UIViewAction> getViewActions(UIViewRoot root)

  Utility method to extract view metadata from the provided UIViewRoot.

  Parameters:

  root - the UIViewRoot from which the metadata will be extracted.

  Returns:

  a Collection of UIViewAction instances. If the view has no metadata, the collection will be empty.

• hasMetadata

  public static boolean hasMetadata(UIViewRoot root)

  Utility method to determine if the the provided UIViewRoot has metadata. The default implementation will return true if the provided UIViewRoot has a facet named UIViewRoot.METADATA_FACET_NAME and that facet has children. It will return false otherwise.

  Parameters:

  root - the UIViewRoot from which the metadata will be extracted from

  Returns:

  true if the view has metadata, false otherwise.