Module org.omnifaces

Package org.omnifaces.util

Class ComponentsLocal

java.lang.Object

org.omnifaces.util.ComponentsLocal

public final class ComponentsLocal
extends Object

Collection of utility methods for the Faces API with respect to working with UIComponent. There are several traversal/lookup methods, there are several UIForm and UIInput related methods which makes it easier to deal with forms and inputs.

The difference with Components is that no one method of ComponentsLocal obtains the FacesContext from the current thread by FacesContext.getCurrentInstance(). This job is up to the caller. This is more efficient in situations where multiple utility methods needs to be called at the same time. Invoking FacesContext.getCurrentInstance() is at its own an extremely cheap operation, however as it's to be obtained as a ThreadLocal variable, it's during the call still blocking all other running threads for some nanoseconds or so.

Since:

4.6

Author:

Bauke Scholtz

See Also:

• Components

Method Summary

Modifier and Type	Method	Description
static void	addFacesScriptResource(FacesContext context)
static void	addFormIfNecessary(FacesContext context)
static void	addScript(FacesContext context, String script)
static void	addScriptResource(FacesContext context, String libraryName, String resourceName)
static UIViewRoot	buildView(FacesContext context, String viewId)
static <T> String	convertToString(FacesContext context, ValueHolder holder, T value)
static MethodExpressionActionListener	createActionListenerMethodExpression(FacesContext context, String expression)
static AjaxBehavior	createAjaxBehavior(FacesContext context, String expression)
static <C extends UIComponent> C	createComponent(FacesContext context, String componentType)
static MethodExpression	createMethodExpression(FacesContext context, String expression, Class<?> returnType, Class<?>... parameterTypes)
static ValueExpression	createValueExpression(FacesContext context, String expression, Class<?> type)
static MethodExpression	createVoidMethodExpression(FacesContext context, String expression, Class<?>... parameterTypes)
static void	disableInput(FacesContext context, String clientId)
static String	encodeHtml(FacesContext context, UIComponent component)
static <C extends UIComponent> C	findComponent(FacesContext context, String clientId)
static <C extends UIComponent> C	findComponentInChildren(FacesContext context, UIComponent component, String clientId)
static <C extends UIComponent> C	findComponentInParents(FacesContext context, UIComponent component, String clientId)
static <C extends UIComponent> C	findComponentRelatively(FacesContext context, UIComponent component, String clientId)
static <C extends UIComponent> List<C>	findComponentsInCurrentForm(FacesContext context, Class<C> type)
static Components.ForEach	forEachComponent(FacesContext context)
static List<String>	getActionExpressionsAndListeners(FacesContext context, UIComponent component)
static <C extends UIComponent> C	getCurrentActionSource(FacesContext context)
static UICommand	getCurrentCommand(FacesContext context)
static <C extends UIComponent> C	getCurrentComponent(FacesContext context)
static UIForm	getCurrentForm(FacesContext context)
static <T> Class<T>	getExpectedType(FacesContext context, ValueExpression valueExpression)
static <T> Class<T>	getExpectedValueType(FacesContext context, UIComponent component)
static <T> T	getImmediateValue(FacesContext context, UIInput input)
static String	getLabel(FacesContext context, UIComponent component)
static UIMessage	getMessageComponent(FacesContext context, UIInput input)
static UIMessages	getMessagesComponent(FacesContext context)
static String	getOptionalLabel(FacesContext context, UIComponent component)
static Map<String,List<String>>	getParams(FacesContext context, UIComponent component, boolean includeRequestParams, boolean includeViewParams)
static String	getRenderedValue(FacesContext context, ValueHolder holder)
static boolean	hasInvokedSubmit(FacesContext context, UIComponent component)
static UIComponent	includeCompositeComponent(FacesContext context, UIComponent parent, String libraryName, String tagName, String id)
static UIComponent	includeCompositeComponent(FacesContext context, UIComponent parent, String libraryName, String tagName, String id, Map<String,String> attributes)
static void	includeFacelet(FacesContext context, UIComponent parent, String path)
static void	invalidateInput(FacesContext context, String relativeClientId, String message, Object... params)
static void	invalidateInputs(FacesContext context, String... relativeClientIds)
static void	resetForm(FacesContext context, UIComponent component)
static void	resetInputs(FacesContext context, UIComponent component)
static <C extends UIComponent> void	validateHasChild(FacesContext context, UIComponent component, Class<C> childType)
static <C extends UIComponent> void	validateHasDirectParent(FacesContext context, UIComponent component, Class<C> parentType)
static void	validateHasNoChildren(FacesContext context, UIComponent component)
static <C extends UIComponent> void	validateHasNoParent(FacesContext context, UIComponent component, Class<C> parentType)
static <C extends UIComponent> void	validateHasOnlyChildren(FacesContext context, UIComponent component, Class<C> childType)
static <C extends UIComponent> void	validateHasParent(FacesContext context, UIComponent component, Class<C> parentType)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getCurrentComponent

public static <C extends UIComponent> C getCurrentComponent(FacesContext context)

See Also:

• Components.getCurrentComponent()

findComponent

public static <C extends UIComponent> C findComponent(FacesContext context,
 String clientId)

See Also:

• Components.findComponent(String)

findComponentRelatively

public static <C extends UIComponent> C findComponentRelatively(FacesContext context,
 UIComponent component,
 String clientId)

See Also:

• Components.findComponentRelatively(UIComponent, String)

findComponentInParents

public static <C extends UIComponent> C findComponentInParents(FacesContext context,
 UIComponent component,
 String clientId)

See Also:

• Components.findComponentInParents(UIComponent, String)

findComponentInChildren

public static <C extends UIComponent> C findComponentInChildren(FacesContext context,
 UIComponent component,
 String clientId)

See Also:

• Components.findComponentInChildren(UIComponent, String)

findComponentsInCurrentForm

public static <C extends UIComponent> List<C> findComponentsInCurrentForm(FacesContext context,
 Class<C> type)

See Also:

• Components.findComponentsInCurrentForm(Class)

forEachComponent

public static Components.ForEach forEachComponent(FacesContext context)

See Also:

• Components.forEachComponent()

createComponent

public static <C extends UIComponent> C createComponent(FacesContext context,
 String componentType)

See Also:

• Components.createComponent(String)

includeFacelet

public static void includeFacelet(FacesContext context,
 UIComponent parent,
 String path)
                           throws IOException

Throws:

IOException

See Also:

• Components.includeFacelet(UIComponent, String)

includeCompositeComponent

public static UIComponent includeCompositeComponent(FacesContext context,
 UIComponent parent,
 String libraryName,
 String tagName,
 String id)

See Also:

• Components.includeCompositeComponent(UIComponent, String, String, String)

includeCompositeComponent

public static UIComponent includeCompositeComponent(FacesContext context,
 UIComponent parent,
 String libraryName,
 String tagName,
 String id,
 Map<String,String> attributes)

See Also:

• Components.includeCompositeComponent(UIComponent, String, String, String, Map)

addScript

public static void addScript(FacesContext context,
 String script)

See Also:

• Components.addScript(String)

addScriptResource

public static void addScriptResource(FacesContext context,
 String libraryName,
 String resourceName)

See Also:

• Components.addScriptResource(String, String)

addFacesScriptResource

public static void addFacesScriptResource(FacesContext context)

See Also:

• Components.addFacesScriptResource()

buildView

public static UIViewRoot buildView(FacesContext context,
 String viewId)
                            throws IOException

Throws:

IOException

See Also:

• Components.buildView(String)

encodeHtml

public static String encodeHtml(FacesContext context,
 UIComponent component)

See Also:

• Components.encodeHtml(UIComponent)

getCurrentForm

public static UIForm getCurrentForm(FacesContext context)

See Also:

• Components.getCurrentForm()

getCurrentCommand

public static UICommand getCurrentCommand(FacesContext context)

See Also:

• Components.getCurrentCommand()

getCurrentActionSource

public static <C extends UIComponent> C getCurrentActionSource(FacesContext context)

See Also:

• Components.getCurrentActionSource()

getLabel

public static String getLabel(FacesContext context,
 UIComponent component)

See Also:

• Components.getLabel(UIComponent)

getOptionalLabel

public static String getOptionalLabel(FacesContext context,
 UIComponent component)

See Also:

• Components.getOptionalLabel(UIComponent)

getImmediateValue

public static <T> T getImmediateValue(FacesContext context,
 UIInput input)

See Also:

• Components.getImmediateValue(UIInput)

getExpectedValueType

public static <T> Class<T> getExpectedValueType(FacesContext context,
 UIComponent component)

See Also:

• Components.getExpectedValueType(UIComponent)

getExpectedType

public static <T> Class<T> getExpectedType(FacesContext context,
 ValueExpression valueExpression)

See Also:

• Components.getExpectedType(ValueExpression)

hasInvokedSubmit

public static boolean hasInvokedSubmit(FacesContext context,
 UIComponent component)

See Also:

• Components.hasInvokedSubmit(UIComponent)

getParams

public static Map<String,List<String>> getParams(FacesContext context,
 UIComponent component,
 boolean includeRequestParams,
 boolean includeViewParams)

See Also:

• Components.getParams(UIComponent, boolean, boolean)

getMessageComponent

public static UIMessage getMessageComponent(FacesContext context,
 UIInput input)

See Also:

• Components.getMessageComponent(UIInput)

getMessagesComponent

public static UIMessages getMessagesComponent(FacesContext context)

See Also:

• Components.getMessagesComponent()

resetForm

public static void resetForm(FacesContext context,
 UIComponent component)

See Also:

• Components.resetForm(UIComponent)

resetInputs

public static void resetInputs(FacesContext context,
 UIComponent component)

See Also:

• Components.resetInputs(UIComponent)

disableInput

public static void disableInput(FacesContext context,
 String clientId)

See Also:

• Components.disableInput(String)

addFormIfNecessary

public static void addFormIfNecessary(FacesContext context)

See Also:

• Components.addFormIfNecessary()

convertToString

public static <T> String convertToString(FacesContext context,
 ValueHolder holder,
 T value)

See Also:

• Components.convertToString(FacesContext, ValueHolder, Object)

getRenderedValue

public static String getRenderedValue(FacesContext context,
 ValueHolder holder)

See Also:

• Components.getRenderedValue(FacesContext, ValueHolder)

invalidateInputs

public static void invalidateInputs(FacesContext context,
 String... relativeClientIds)

See Also:

• Components.invalidateInputs(String...)

invalidateInput

public static void invalidateInput(FacesContext context,
 String relativeClientId,
 String message,
 Object... params)

See Also:

• Components.invalidateInput(String, String, Object...)

createValueExpression

public static ValueExpression createValueExpression(FacesContext context,
 String expression,
 Class<?> type)

See Also:

• Components.createValueExpression(String, Class)

createMethodExpression

public static MethodExpression createMethodExpression(FacesContext context,
 String expression,
 Class<?> returnType,
 Class<?>... parameterTypes)

See Also:

• Components.createMethodExpression(String, Class, Class[])

createVoidMethodExpression

public static MethodExpression createVoidMethodExpression(FacesContext context,
 String expression,
 Class<?>... parameterTypes)

See Also:

• Components.createVoidMethodExpression(String, Class[])

createActionListenerMethodExpression

public static MethodExpressionActionListener createActionListenerMethodExpression(FacesContext context,
 String expression)

See Also:

• Components.createActionListenerMethodExpression(String)

createAjaxBehavior

public static AjaxBehavior createAjaxBehavior(FacesContext context,
 String expression)

See Also:

• Components.createAjaxBehavior(String)

getActionExpressionsAndListeners

public static List<String> getActionExpressionsAndListeners(FacesContext context,
 UIComponent component)

See Also:

• Components.getActionExpressionsAndListeners(UIComponent)

validateHasParent

public static <C extends UIComponent> void validateHasParent(FacesContext context,
 UIComponent component,
 Class<C> parentType)

See Also:

• Components.validateHasParent(UIComponent, Class)

validateHasDirectParent

public static <C extends UIComponent> void validateHasDirectParent(FacesContext context,
 UIComponent component,
 Class<C> parentType)

See Also:

• Components.validateHasDirectParent(UIComponent, Class)

validateHasNoParent

public static <C extends UIComponent> void validateHasNoParent(FacesContext context,
 UIComponent component,
 Class<C> parentType)

See Also:

• Components.validateHasNoParent(UIComponent, Class)

validateHasChild

public static <C extends UIComponent> void validateHasChild(FacesContext context,
 UIComponent component,
 Class<C> childType)

See Also:

• Components.validateHasChild(UIComponent, Class)

validateHasOnlyChildren

public static <C extends UIComponent> void validateHasOnlyChildren(FacesContext context,
 UIComponent component,
 Class<C> childType)

See Also:

• Components.validateHasOnlyChildren(UIComponent, Class)

validateHasNoChildren

public static void validateHasNoChildren(FacesContext context,
 UIComponent component)

See Also:

• Components.validateHasNoChildren(UIComponent)