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This is the master POM file for Sun's Implementation of the JSF 2.1 Specification.

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package javax.faces.component;

import java.util.Collection;

import java.util.logging.Level;
import java.util.logging.Logger;
import javax.faces.component.visit.VisitCallback;
import javax.faces.component.visit.VisitContext;
import javax.faces.component.visit.VisitResult;
import javax.faces.context.FacesContext;


/**
 * 

UINamingContainer is a * convenience base class for components that wish to implement {@link * NamingContainer} functionality.

*/ public class UINamingContainer extends UIComponentBase implements NamingContainer, UniqueIdVendor, StateHolder { // ------------------------------------------------------ Manifest Constants private static Logger LOGGER = Logger.getLogger("javax.faces.component", "javax.faces.LogStrings"); /** *

The standard component type for this component.

*/ public static final String COMPONENT_TYPE = "javax.faces.NamingContainer"; /** *

The standard component family for this component.

*/ public static final String COMPONENT_FAMILY = "javax.faces.NamingContainer"; /** *

The context-param that allows the separator * char for clientId strings to be set on a per-web application basis.

* * @since 2.0 */ public static final String SEPARATOR_CHAR_PARAM_NAME = "javax.faces.SEPARATOR_CHAR"; enum PropertyKeys { lastId } // ------------------------------------------------------------ Constructors /** *

Create a new {@link UINamingContainer} instance with default property * values.

*/ public UINamingContainer() { super(); setRendererType(null); } // -------------------------------------------------------------- Properties public String getFamily() { return (COMPONENT_FAMILY); } /** *

Return the character used to separate * segments of a clientId. The implementation must determine if there is a * <context-param> with the value given by the value of * the symbolic constant {@link #SEPARATOR_CHAR_PARAM_NAME}. If there is a * value for this param, the first character of the value must be returned * from this method. Otherwise, the value of the symbolic constant {@link * NamingContainer#SEPARATOR_CHAR} must be returned.

* * @param context the {@link FacesContext} for the current request * @since 2.0 */ public static char getSeparatorChar(FacesContext context) { if (null == context) { if (LOGGER.isLoggable(Level.SEVERE)) { LOGGER.log(Level.SEVERE, "UINamingContainer.getSeparatorChar() called with null FacesContext. This indicates a SEREVER error. Returning {0}", NamingContainer.SEPARATOR_CHAR); } return NamingContainer.SEPARATOR_CHAR; } Character separatorChar = (Character) context.getAttributes().get(SEPARATOR_CHAR_PARAM_NAME); if (separatorChar == null) { String initParam = context.getExternalContext().getInitParameter(SEPARATOR_CHAR_PARAM_NAME); separatorChar = NamingContainer.SEPARATOR_CHAR; if (initParam != null) { initParam = initParam.trim(); if (initParam.length() != 0) { separatorChar = initParam.charAt(0); } } context.getAttributes().put(SEPARATOR_CHAR_PARAM_NAME, separatorChar); } return separatorChar; } /** * @see UIComponent#visitTree */ @Override public boolean visitTree(VisitContext context, VisitCallback callback) { // NamingContainers can optimize partial tree visits by taking advantage // of the fact that it is possible to detect whether any ids to visit // exist underneath the NamingContainer. If no such ids exist, there // is no need to visit the subtree under the NamingContainer. Collection idsToVisit = context.getSubtreeIdsToVisit(this); assert(idsToVisit != null); // If we have ids to visit, let the superclass implementation // handle the visit if (!idsToVisit.isEmpty()) { return super.visitTree(context, callback); } // If we have no child ids to visit, just visit ourselves, if // we are visitable. if (isVisitable(context)) { FacesContext facesContext = context.getFacesContext(); pushComponentToEL(facesContext, null); try { VisitResult result = context.invokeVisitCallback(this, callback); return (result == VisitResult.COMPLETE); } finally { popComponentFromEL(facesContext); } } // Done visiting this subtree. Return false to allow // visit to continue. return false; } public String createUniqueId(FacesContext context, String seed) { Integer i = (Integer) getStateHelper().get(PropertyKeys.lastId); int lastId = ((i != null) ? i : 0); getStateHelper().put(PropertyKeys.lastId, ++lastId); return UIViewRoot.UNIQUE_ID_PREFIX + (seed == null ? lastId : seed); } }




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