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UIComponent.java
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UIComponent.java
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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package javax.faces.component;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.FacesWrapper;
import javax.faces.application.Resource;
import javax.faces.component.visit.VisitCallback;
import javax.faces.component.visit.VisitContext;
import javax.faces.component.visit.VisitHint;
import javax.faces.component.visit.VisitResult;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.PostRestoreStateEvent;
import javax.faces.event.ComponentSystemEvent;
import javax.faces.event.ComponentSystemEventListener;
import javax.faces.event.FacesEvent;
import javax.faces.event.SystemEvent;
import javax.faces.event.SystemEventListener;
import javax.faces.event.FacesListener;
import javax.faces.event.SystemEventListenerHolder;
import javax.faces.render.Renderer;
/**
* <p><strong class="changed_modified_2_0
* changed_modified_2_0_rev_a changed_modified_2_1 changed_modified_2_2">UIComponent</strong> is
* the base class for all user interface components in JavaServer Faces.
* The set of {@link UIComponent} instances associated with a particular request
* and response are organized into a component tree under a {@link
* UIViewRoot} that represents the entire content of the request or
* response.</p>
*
* <p>For the convenience of component developers,
* {@link UIComponentBase} provides the default
* behavior that is specified for a {@link UIComponent}, and is the base class
* for all of the concrete {@link UIComponent} "base" implementations.
* Component writers are encouraged to subclass
* {@link UIComponentBase}, instead of directly
* implementing this abstract class, to reduce the impact of any future changes
* to the method signatures.</p>
*
* <p class="changed_added_2_0">If the {@link
* javax.faces.event.ListenerFor} annotation is attached to the class
* definition of a <code>Component</code>, that class must also
* implement {@link javax.faces.event.ComponentSystemEventListener}.
* </p>
*/
public abstract class UIComponent implements PartialStateHolder, TransientStateHolder, SystemEventListenerHolder,
ComponentSystemEventListener {
private static Logger LOGGER = Logger.getLogger("javax.faces.component",
"javax.faces.LogStrings");
/**
* <p class="changed_added_2_1">The <code>ServletContext</code> init
* parameter consulted by
* the <code>UIComponent</code> to tell whether or not the
* {@link #CURRENT_COMPONENT} and {@link #CURRENT_COMPOSITE_COMPONENT}
* attribute keys should be honored as specified.</p>
*
* <p>If this parameter is not specified, or is set to false, the contract
* specified by the {@link #CURRENT_COMPONENT} and
* {@link #CURRENT_COMPOSITE_COMPONENT} method is not honored. If this
* parameter is set to true, the contract is honored.</p>
*/
public static final String HONOR_CURRENT_COMPONENT_ATTRIBUTES_PARAM_NAME =
"javax.faces.HONOR_CURRENT_COMPONENT_ATTRIBUTES";
/**
* <p class="changed_added_2_0"><span
* class="changed_deleted_2_2">The</span> key to which the
* <code>UIComponent</code> currently being processed will be
* associated with within the {@link FacesContext} attributes
* map. <span class="changed_deleted_2_2">The use of this constant is
* deprecated. Please see {@link
* #HONOR_CURRENT_COMPONENT_ATTRIBUTES_PARAM_NAME} to enable its
* use.</span></p>
*
* @see javax.faces.context.FacesContext#getAttributes()
*
* @since 2.0
*
* @deprecated
*/
public static final String CURRENT_COMPONENT = "javax.faces.component.CURRENT_COMPONENT";
/**
* <p class="changed_added_2_0"><span
* class="changed_deleted_2_2">The</span> key to which the
* <em>composite</em> <code>UIComponent</code> currently being
* processed will be associated with within the {@link FacesContext}
* attributes map. <span class="changed_deleted_2_2">The use of this
* constant is deprecated. Please see {@link
* #HONOR_CURRENT_COMPONENT_ATTRIBUTES_PARAM_NAME} to enable its
* use.</span></p>
*
* @see javax.faces.context.FacesContext#getAttributes()
*
* @since 2.0
*
* @deprecated
*/
public static final String CURRENT_COMPOSITE_COMPONENT = "javax.faces.component.CURRENT_COMPOSITE_COMPONENT";
/**
* <p class="changed_added_2_0">The value of this constant is used as the key in the
* component attribute map, the value for which is a
* <code>java.beans.BeanInfo</code> implementation describing the composite
* component. This <code>BeanInfo</code> is known as the
* <em>composite component BeanInfo</em>.</p>
*
* @since 2.0
*/
public static final String BEANINFO_KEY = "javax.faces.component.BEANINFO_KEY";
/**
* <p class="changed_added_2_0">The value of this constant is used as the key
* in the <em>composite component BeanDescriptor</em> for the
* <code>Map<PropertyDescriptor></code> that contains meta-information
* for the declared facets for this composite component.
* This map must contain an entry under the key {@link #COMPOSITE_FACET_NAME}, even
* if no facets were explicitly declared. See {@link #COMPOSITE_FACET_NAME}.</p>
*
* @since 2.0
*/
public static final String FACETS_KEY = "javax.faces.component.FACETS_KEY";
/**
* <p class="changed_added_2_0">The value of this constant is used as the key
* in the component attributes <code>Map</code> for the
* {@link javax.faces.view.Location} in the view at which this component
* instance resides.</p>
*
* @since 2.0
*/
public static final String VIEW_LOCATION_KEY = "javax.faces.component.VIEW_LOCATION_KEY";
/**
* <p class="changed_added_2_0">The value of this constant is used as the key
* in the <em>composite component BeanDescriptor</em> for a
* <code>ValueExpression</code> that evaluates to the
* <code>component-type</code> of the <em>composite component root</em>
* <code>UIComponent</code> for this composite component, if
* one was declared by the composite component author.</p>
*
* @since 2.0
*/
public static final String COMPOSITE_COMPONENT_TYPE_KEY = "javax.faces.component.COMPOSITE_COMPONENT_TYPE";
/**
* <p class="changed_added_2_0">The value of this constant is used as the key
* in the <code>Map</code> returned as described in {@link #FACETS_KEY}
* for the
* <code>PropertyDescriptor</code> describing the composite component facet.
* The value of this constant is also used as the key in the <code>Map</code>
* returned from {@link #getFacets}. In this case, it refers to the actual
* facet that is the {@link javax.faces.component.UIPanel} that is the parent of the all
* of the components in the <code><composite:implementation></code>
* section of the <em>composite component VDL file</em>.</p>
*
* @since 2.0
*/
public static final String COMPOSITE_FACET_NAME = "javax.faces.component.COMPOSITE_FACET_NAME";
/**
* <p class="changed_added_2_1">This constant enables one to quickly discover
* the names of the declared composite component attributes that have been
* given default values by the composite component author. The information
* is exposed as a <code>Collection<String></code> returned from the
* <code>getValue()</code> method on the <em>composite component
* BeanDescriptor</em>, when this constant is passed as the argument.</p>
*
* @since 2.1
*/
public static final String ATTRS_WITH_DECLARED_DEFAULT_VALUES =
"javax.faces.component.ATTR_NAMES_WITH_DEFAULT_VALUES";
enum PropertyKeysPrivate {
attributesThatAreSet
}
/**
* Properties that are tracked by state saving.
*/
enum PropertyKeys {
rendered,
attributes,
bindings,
rendererType,
systemEventListeners,
behaviors,
passThroughAttributes
}
/**
* List of attributes that have been set on the component (this
* may be from setValueExpression, the attributes map, or setters
* from the concrete HTML components. This allows
* for faster rendering of attributes as this list is authoritative
* on what has been set.
*/
List<String> attributesThatAreSet;
ComponentStateHelper stateHelper = null;
UIComponent compositeParent;
private transient Boolean isSetCurrentComponent;
// -------------------------------------------------------------- Attributes
/**
* <p>Return a mutable
* <code>Map</code> representing the attributes
* (and properties, see below) associated wth this {@link UIComponent},
* keyed by attribute name (which must be a String). The returned
* implementation must support all of the standard and optional
* <code>Map</code> methods, plus support the following additional
* requirements:</p>
* <ul>
* <li>The <code>Map</code> implementation must implement
* the <code>java.io.Serializable</code> interface.</li>
* <li>Any attempt to add a <code>null</code> key or value must
* throw a <code>NullPointerException</code>.</li>
* <li>Any attempt to add a key that is not a String must throw
* a <code>ClassCastException</code>.</li>
* <li>If the attribute name specified as a key matches a property
* of this {@link UIComponent}'s implementation class, the following
* methods will have special behavior:
* <ul>
* <li><code>containsKey</code> - Return <code>false</code>.</li>
* <li><code>get()</code> - If the property is readable, call
* the getter method and return the returned value (wrapping
* primitive values in their corresponding wrapper classes);
* otherwise throw <code>IllegalArgumentException</code>.</li>
* <li><code>put()</code> - If the property is writeable, call
* the setter method to set the corresponding value (unwrapping
* primitive values in their corresponding wrapper classes).
* If the property is not writeable, or an attempt is made to
* set a property of primitive type to <code>null</code>,
* throw <code>IllegalArgumentException</code>.</li>
* <li><code>remove</code> - Throw
* <code>IllegalArgumentException</code>.</li>
* </ul></li>
* </ul>
*
*/
public abstract Map<String, Object> getAttributes();
/**
* <p class="changed_added_2_2">This is a convenience method that
* simply calls {@link #getPassThroughAttributes(boolean)}, passing {@code true}
* as the argument. This method must never return {@code null}.</p>
*
* @since 2.2
*/
public final Map<String, Object> getPassThroughAttributes(){
return getPassThroughAttributes(true);
}
/**
* <p class="changed_added_2_2">This method has the same specification as
* {@link #getPassThroughAttributes() } except that it is allowed to return
* {@code null} if and only if the argument {@code create} is {@code false}
* and no pass through attribute data structure exists for this instance.
* The returned {@code Map} implementation must support all of the standard and optional
* {@code Map} methods, plus support the following additional requirements.
* The map must be stored in using {@link #getStateHelper}.</p>
*
* <div class="changed_added_2_2">
*
* <p>The {@code Map} implementation must implement {@code java.io.Serializable}.</p>
*
* <p>Any attempt to add a {@code null} key or value must throw a {@code NullPointerException}.</p>
*
* <p>Any attempt to add a key that is not a {@code String} must
* throw an {@code IllegalArgumentException}.</p>
*
* <p>For backward compatibility with components that extend directly from
* this class, a default implementation is provided that returns the empty
* map.</p>
*
* </div>
*
* @param create if <code>true</code>, a new {@code Map}
* instance will be created if it does not exist already. If
* <code>false</code>, and there is no existing
* <code>Map</code> instance, one will not be created and
* <code>null</code> will be returned.
* @return A {@code Map} instance, or {@code null}.
*
* @since 2.2
*/
public Map<String, Object> getPassThroughAttributes(boolean create) {
return Collections.emptyMap();
}
// ---------------------------------------------------------------- Bindings
/**
*
* <p>Call through to {@link #getValueExpression} and examine the
* result. If the result is an instance of the wrapper class
* mandated in {@link #setValueBinding}, extract the
* <code>ValueBinding</code> instance and return it. Otherwise,
* wrap the result in an implementation of
* <code>ValueBinding</code>, and return it.</p>
*
* @param name Name of the attribute or property for which to retrieve a
* {@link ValueBinding}
*
* @throws NullPointerException if <code>name</code>
* is <code>null</code>
*
* @deprecated This has been replaced by {@link #getValueExpression}.
*/
public abstract ValueBinding getValueBinding(String name);
/**
* <p>Wrap the argument <code>binding</code> in an implementation of
* {@link ValueExpression} and call through to {@link
* #setValueExpression}.</p>
*
* @param name Name of the attribute or property for which to set a
* {@link ValueBinding}
* @param binding The {@link ValueBinding} to set, or <code>null</code>
* to remove any currently set {@link ValueBinding}
*
* @throws IllegalArgumentException if <code>name</code> is one of
* <code>id</code> or <code>parent</code>
* @throws NullPointerException if <code>name</code>
* is <code>null</code>
*
* @deprecated This has been replaced by {@link #setValueExpression}.
*/
public abstract void setValueBinding(String name, ValueBinding binding);
// The set of ValueExpressions for this component, keyed by property
// name This collection is lazily instantiated
// The set of ValueExpressions for this component, keyed by property
// name This collection is lazily instantiated
@Deprecated
protected Map<String,ValueExpression> bindings = null;
/**
* <p>Return the {@link ValueExpression} used to calculate the value for the
* specified attribute or property name, if any.</p>
*
* <p>This method must be overridden and implemented for components that
* comply with JSF 1.2 and later.</p>
*
* @since 1.2
*
* @param name Name of the attribute or property for which to retrieve a
* {@link ValueExpression}
*
* @throws NullPointerException if <code>name</code>
* is <code>null</code>
*
*/
public ValueExpression getValueExpression(String name) {
if (name == null) {
throw new NullPointerException();
}
Map<String,ValueExpression> map = (Map<String,ValueExpression>)
getStateHelper().get(UIComponentBase.PropertyKeys.bindings);
return ((map != null) ? map.get(name) : null);
}
/**
* <p>Set the {@link ValueExpression} used to calculate the value
* for the specified attribute or property name, if any.</p>
*
* <p>The implementation must call {@link
* ValueExpression#isLiteralText} on the argument
* <code>expression</code>. If <code>isLiteralText()</code> returns
* <code>true</code>, invoke {@link ValueExpression#getValue} on the
* argument expression and pass the result as the <code>value</code>
* parameter in a call to <code>this.{@link
* #getAttributes()}.put(name, value)</code> where <code>name</code>
* is the argument <code>name</code>. If an exception is thrown as
* a result of calling {@link ValueExpression#getValue}, wrap it in
* a {@link javax.faces.FacesException} and re-throw it. If
* <code>isLiteralText()</code> returns <code>false</code>, simply
* store the un-evaluated <code>expression</code> argument in the
* collection of <code>ValueExpression</code>s under the key given
* by the argument <code>name</code>.</p>
*
* <p>This method must be overridden and implemented for components that
* comply with JSF 1.2 and later.</p>
*
* @since 1.2
*
* @param name Name of the attribute or property for which to set a
* {@link ValueExpression}
* @param binding The {@link ValueExpression} to set, or <code>null</code>
* to remove any currently set {@link ValueExpression}
*
* @throws IllegalArgumentException if <code>name</code> is one of
* <code>id</code> or <code>parent</code>
* @throws NullPointerException if <code>name</code>
* is <code>null</code>
*
*/
public void setValueExpression(String name, ValueExpression binding) {
if (name == null) {
throw new NullPointerException();
} else if ("id".equals(name) || "parent".equals(name)) {
throw new IllegalArgumentException();
}
if (binding != null) {
if (!binding.isLiteralText()) {
//if (bindings == null) {
// //noinspection CollectionWithoutInitialCapacity
// bindings = new HashMap<String, ValueExpression>();
//}
// add this binding name to the 'attributesThatAreSet' list
//List<String> sProperties = (List<String>)
// getStateHelper().get(PropertyKeysPrivate.attributesThatAreSet);
List<String> sProperties =
(List<String>) getStateHelper().get(PropertyKeysPrivate.attributesThatAreSet);
if (sProperties == null) {
getStateHelper().add(PropertyKeysPrivate.attributesThatAreSet, name);
} else if (!sProperties.contains(name)) {
getStateHelper().add(PropertyKeysPrivate.attributesThatAreSet, name);
}
getStateHelper().put(UIComponentBase.PropertyKeys.bindings,
name,
binding);
//bindings.put(name, binding);
} else {
ELContext context =
FacesContext.getCurrentInstance().getELContext();
try {
getAttributes().put(name, binding.getValue(context));
} catch (ELException ele) {
throw new FacesException(ele);
}
}
} else {
//if (bindings != null) {
// remove this binding name from the 'attributesThatAreSet' list
// List<String> sProperties = getAttributesThatAreSet(false);
// if (sProperties != null) {
// sProperties.remove(name);
// }
getStateHelper().remove(PropertyKeysPrivate.attributesThatAreSet,
name);
getStateHelper().remove(UIComponentBase.PropertyKeys.bindings, name);
//bindings.remove(name);
// if (bindings.isEmpty()) {
// bindings = null;
// }
}
// }
}
// -------------------------------------------------------------- Properties
boolean initialState;
/**
* <p class="changed_added_2_0">An implementation of {@link
* PartialStateHolder#markInitialState}, this method is called by
* the runtime to indicate that the instance should start tracking
* changes to its state.</p>
* @since 2.0
*/
public void markInitialState() {
initialState = true;
}
/**
* <p class="changed_added_2_0">An implementation of {@link
* PartialStateHolder#initialStateMarked}, this method is called by
* the runtime to test if the {@link
* PartialStateHolder#markInitialState} method was called.</p>
* @since 2.0
*/
public boolean initialStateMarked() {
return initialState;
}
/**
* <p class="changed_added_2_0">An implementation of {@link
* PartialStateHolder#clearInitialState}, this method is called by
* the runtime to tell the instance to stop tracking state
* changes.</p>
* @since 2.0
*/
public void clearInitialState() {
initialState = false;
}
/**
* <p class="changed_added_2_0">Return the {@link StateHelper}
* instance used to help this component implement {@link
* PartialStateHolder}.</p>
* @since 2.0
*/
protected StateHelper getStateHelper() {
return getStateHelper(true);
}
/**
* <p class="changed_added_2_0">Like {@link #getStateHelper()}, but
* only create a state helper instance if the argument
* <code>creat</code> is <code>true</code>.</p>
* @param create if <code>true</code>, a new {@link StateHelper}
* instance will be created if it does not exist already. If
* <code>false</code>, and there is no existing
* <code>StateHelper</code> instance, one will not be created and
* <code>null</code> will be returned.
* @since 2.0
*/
protected StateHelper getStateHelper(boolean create) {
if (create && stateHelper == null) {
stateHelper = new ComponentStateHelper(this);
}
return stateHelper;
}
/**
* <p class="changed_added_2_1">Return the {@link
* TransientStateHelper} instance for this <code>UIComponent</code>
* instance. The default implementation simply calls through to
* {@link #getTransientStateHelper(boolean)} passing <code>true</code>
* as the argument.</p>
*
* @since 2.1
*/
public final TransientStateHelper getTransientStateHelper()
{
return getTransientStateHelper(true);
}
/**
* <p class="changed_added_2_1">Return the {@link
* TransientStateHelper} instance for this <code>UIComponent</code>
* instance.</p>
*
* @param create if <code>true</code> create, if necessary, any
* internal data structures. If <code>false</code>, do not create
* any instances. In this case, it is possible for this method to
* return <code>null</code>.
*
* @since 2.1
*/
public TransientStateHelper getTransientStateHelper(boolean create) {
if (create && stateHelper == null) {
stateHelper = new ComponentStateHelper(this);
}
return stateHelper;
}
/**
* <p class="changed_added_2_1">For components that need to support
* the concept of transient state, this method will restore any
* state saved on a prior call to {@link #saveTransientState}.</p>
*
* @since 2.1
*/
public void restoreTransientState(FacesContext context, Object state)
{
boolean forceCreate = (state != null);
TransientStateHelper helper = getTransientStateHelper(forceCreate);
if (helper != null) {
helper.restoreTransientState(context, state);
}
}
/**
* <p class="changed_added_2_1">For components that need to support
* the concept of transient state, this method will save any state
* that is known to be transient in nature.</p>
*
* @since 2.1
*/
public Object saveTransientState(FacesContext context)
{
TransientStateHelper helper = getTransientStateHelper(false);
return (helper == null) ? null : helper.saveTransientState(context);
}
private boolean isInView;
/**
* <p class="changed_added_2_0">Return <code>true</code> if this
* component is within the view hierarchy otherwise
* <code>false</code></code>
*
* @since 2.0
*/
public boolean isInView() {
return isInView;
}
/**
* <p class="changed_added_2_0">Updates the status as to whether or
* not this component is currently within the view hierarchy.
* <strong>This method must never be called by developers; a {@link
* UIComponent}'s internal implementation will call it as components
* are added to or removed from a parent's child <code>List</code>
* or facet <code>Map</code></strong>.</p>
*
* @param isInView flag indicating whether or not this component is within
* the view hierachy
*
* @since 2.0
*/
public void setInView(boolean isInView) {
this.isInView = isInView;
}
/**
* <p class="changed_added_2_0">Enable EL to access the <code>clientId</code>
* of a component. This is particularly useful in combination with the
* <code>component</code> and <code>cc</code> implicit
* objects. A default implementation is provided that simply calls
* {@link FacesContext#getCurrentInstance} and then calls through to
* {@link #getClientId(FacesContext)}.</p>
*
* @since 2.0
*/
public String getClientId() {
FacesContext context = FacesContext.getCurrentInstance();
return getClientId(context);
}
/**
* <p>Return a client-side identifier for this component, generating
* one if necessary. The associated {@link Renderer}, if any,
* will be asked to convert the clientId to a form suitable for
* transmission to the client.</p>
*
* <p>The return from this method must be the same value throughout
* the lifetime of the instance, unless the <code>id</code> property
* of the component is changed, or the component is placed in
* a {@link NamingContainer} whose client ID changes (for example,
* {@link UIData}). However, even in these cases, consecutive
* calls to this method must always return the same value. The
* implementation must follow these steps in determining the
* clientId:</p>
*
* <p>Find the closest ancestor to <b>this</b> component in the view
* hierarchy that implements <code>NamingContainer</code>. Call
* <code>getContainerClientId()</code> on it and save the result as
* the <code>parentId</code> local variable. Call {@link #getId} on
* <b>this</b> component and save the result as the
* <code>myId</code> local variable. If <code>myId</code> is
* <code>null</code>, call
* <code>context.getViewRoot().createUniqueId()</code> and assign
* the result to myId. If <code>parentId</code> is
* non-<code>null</code>, let <code>myId</code> equal <code>parentId
* + {@link UINamingContainer#getSeparatorChar} + myId</code>. Call
* {@link Renderer#convertClientId}, passing <code>myId</code>, and
* return the result.</p>
*
* @param context The {@link FacesContext} for the current request
*
* @throws NullPointerException if <code>context</code>
* is <code>null</code>
*/
public abstract String getClientId(FacesContext context);
/**
* <p>Allow components that implement {@link NamingContainer} to
* selectively disable prepending their clientId to their
* descendent's clientIds by breaking the prepending logic into a
* seperately callable method. See {@link #getClientId} for usage.</p>
*
* <p>By default, this method will call through to {@link
* #getClientId} and return the result.
*
* @since 1.2
*
* @throws NullPointerException if <code>context</code> is
* <code>null</code>
*/
public String getContainerClientId(FacesContext context) {
if (context == null) {
throw new NullPointerException();
}
return this.getClientId(context);
}
/**
* <p>Return the identifier of the component family to which this
* component belongs. This identifier, in conjunction with the value
* of the <code>rendererType</code> property, may be used to select
* the appropriate {@link Renderer} for this component instance.</p>
*/
public abstract String getFamily();
/**
* <p>Return the component identifier of this {@link UIComponent}.</p>
*/
public abstract String getId();
/**
* <p>Set the component identifier of this {@link UIComponent} (if any).
* Component identifiers must obey the following syntax restrictions:</p>
* <ul>
* <li>Must not be a zero-length String.</li>
* <li>First character must be a letter or an underscore ('_').</li>
* <li>Subsequent characters must be a letter, a digit,
* an underscore ('_'), or a dash ('-').</li>
* <li>
* </ul>
*
* <p>Component identifiers must also obey the following semantic
* restrictions (note that this restriction is <strong>NOT</strong>
* enforced by the <code>setId()</code> implementation):</p>
* <ul>
* <li>The specified identifier must be unique among all the components
* (including facets) that are descendents of the nearest ancestor
* {@link UIComponent} that is a {@link NamingContainer}, or within
* the scope of the entire component tree if there is no such
* ancestor that is a {@link NamingContainer}.</li>
* </ul>
*
* @param id The new component identifier, or <code>null</code> to indicate
* that this {@link UIComponent} does not have a component identifier
*
* @throws IllegalArgumentException if <code>id</code> is not
* syntactically valid
*/
public abstract void setId(String id);
/**
* <p>Return the parent {@link UIComponent} of this
* <code>UIComponent</code>, if any. A component must allow child
* components to be added to and removed from the list of children
* of this component, even though the child component returns null
* from <code>getParent( )</code>.</p>
*/
public abstract UIComponent getParent();
/**
* <p class="changed_modified_2_0"><span
* class="changed_modified_2_0_rev_a">Set</span> the parent
* <code>UIComponent</code> of this <code>UIComponent</code>. <span
* class="changed_added_2_0"><span
* class="changed_modified_2_0_rev_a">If
* <code>parent.isInView()</code> returns <code>true</code>, calling
* this method will first cause a {@link
* javax.faces.event.PreRemoveFromViewEvent} to be published, for
* this node, and then the children of this node. Then, once the
* re-parenting has occurred, a {@link
* javax.faces.event.PostAddToViewEvent} will be published as well,
* first for this node, and then for the node's children, <span
* class="changed_modified_2_0_rev_a">but only if any of the
* following conditions are true.</span></span></p>
* <div class="changed_modified_2_0_rev_a">
* <ul>
* <li><p>{@link
* javax.faces.context.FacesContext#getCurrentPhaseId} returns
* {@link javax.faces.event.PhaseId#RESTORE_VIEW} and partial
* state saving is enabled.</p></li>
* <li><p>{@link javax.faces.context.FacesContext#isPostback}
* returns <code>false</code> and {@link
* javax.faces.context.FacesContext#getCurrentPhaseId} returns
* something other than {@link
* javax.faces.event.PhaseId#RESTORE_VIEW}</p></li>
* </ul>
* </div>
* <p class="changed_modified_2_0"> <strong>This method must never
* be called by developers; a {@link UIComponent}'s internal
* implementation will call it as components are added to or removed
* from a parent's child <code>List</code> or facet
* <code>Map</code></strong></span>.</p>
*
* @param parent The new parent, or <code>null</code> for the root node
* of a component tree
*/
public abstract void setParent(UIComponent parent);
/**
* <p>Return <code>true</code> if this component (and its children)
* should be rendered during the <em>Render Response</em> phase
* of the request processing lifecycle.</p>
*/
public abstract boolean isRendered();
/**
* <p>Set the <code>rendered</code> property of this
* {@link UIComponent}.</p>
*
* @param rendered If <code>true</code> render this component;
* otherwise, do not render this component
*/
public abstract void setRendered(boolean rendered);
/**
* <p>Return the {@link Renderer} type for this {@link UIComponent}
* (if any).</p>
*/
public abstract String getRendererType();
/**
* <p>Set the {@link Renderer} type for this {@link UIComponent},
* or <code>null</code> for components that render themselves.</p>
*
* @param rendererType Logical identifier of the type of
* {@link Renderer} to use, or <code>null</code> for components
* that render themselves
*/
public abstract void setRendererType(String rendererType);
/**
* <p>Return a flag indicating whether this component is responsible
* for rendering its child components. The default implementation
* in {@link UIComponentBase#getRendersChildren} tries to find the
* renderer for this component. If it does, it calls {@link
* Renderer#getRendersChildren} and returns the result. If it
* doesn't, it returns false. As of version 1.2 of the JavaServer
* Faces Specification, component authors are encouraged to return
* <code>true</code> from this method and rely on {@link
* UIComponentBase#encodeChildren}.</p>
*/
public abstract boolean getRendersChildren();
private Map<String, String> resourceBundleMap = null;
/**
* <p class="changed_added_2_0">Return a
* <code>Map<String,String></code> of the
* <code>ResourceBundle</code> for this component. A component may
* have a <code>ResourceBundle</code> associated with it. This
* bundle may contain localized properties relating to instances of
* this component. The default implementation first looks for a
* <code>ResourceBundle</code> with a base name equal to the fully
* qualified class name of the current <code>UIComponent this</code>
* and <code>Locale</code> equal to the <code>Locale</code> of the
* current <code>UIViewRoot</code>. If no such bundle is found, and
* the component is a composite component, let <em>resourceName</em>
* be the <em>resourceName</em> of the {@link Resource} for this
* composite component, replacing the file extension with
* ".properties". Let <em>libraryName</em> be the
* <em>libraryName</em> of the the {@link Resource} for this
* composite component. Call {@link
* javax.faces.application.ResourceHandler#createResource(java.lang.String,java.lang.String)},
* passing the derived <em>resourceName</em> and
* <em>libraryName</em>. Note that this will automatically allow
* for the localization of the <code>ResourceBundle</code> due to
* the localization facility implemented in
* <code>createResource</code>, which is specified in section
* JSF.2.6.1.3 of the spec prose document. If the resultant {@link
* Resource} exists and can be found, the <code>InputStream</code>
* for the resource is used to create a <code>ResourceBundle</code>.
* If either of the two previous steps for obtaining the
* <code>ResourceBundle</code> for this component is successful, the
* <code>ResourceBundle</code> is wrapped in a
* <code>Map<String,String></code> and returned. Otherwise
* <code>Collections.EMPTY_MAP</code> is returned.</p>
*
* @since 2.0
*/
public Map<String,String> getResourceBundleMap() {
if (null == resourceBundleMap) {
// See if there is a ResourceBundle under the FQCN for this class
String className = this.getClass().getName();
Locale currentLocale = null;
FacesContext context = null;
UIViewRoot root = null;
ResourceBundle resourceBundle = null;
// Step 1: look for a ResourceBundle under the FQCN of this instance
if (null != (context = FacesContext.getCurrentInstance())) {
if (null != (root = context.getViewRoot())) {
currentLocale = root.getLocale();
}
}
if (null == currentLocale) {
currentLocale = Locale.getDefault();
}
try {
resourceBundle =
ResourceBundle.getBundle(className, currentLocale);
} catch (MissingResourceException e) {
// It is not an error if there is no ResourceBundle
}
// Step 2: if this is a composite component, look for a