APIs that Support Event Handling

• FacesContext:
  • Contains all state information related to the processing of a single JavaServer Faces request, and the rendering of the corresponding response.

  • Passed to, and potentially modified by, each phase of the JSF lifecycle.

• UIViewRoot:
  • The UIComponent representing the root of the UIComponent tree.

  • Has no rendering, just serves as the root of the component tree, and as a place to hang phase listeners.

• ValueChangeEvent:
  • A notification that the local value of the source component has been changed as a result of user interface activity.

  • Not fired unless validation of the new value completed successfully.

  • Extends the FacesEvent class.

• FacesEvent:
  • The base class for user interface and application events that can be fired by UIComponents.