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## org.richfaces.renderkit.util
Class RendererUtils

    java.lang.Object
      org.richfaces.renderkit.util.RendererUtils

    public final class RendererUtils

extends Object

Util class for common render operations - render passthru html attributes, iterate over child components etc.

Version:
  $Revision: 1.1.2.6 $ $Date: 2007/02/08 19:07:16 $
Author:
  asmirnov@exadel.com (latest modification by $Author: alexsmirnov $)

Field Summary
`static String` | `DUMMY_FORM_ID`

Constructor Summary
`protected` | `RendererUtils()`

Method Summary
`protected Object` | `attributeValue(String name, Object value)` Convert attribute value to proper object.
`String` | `clientId(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)` Simplified version of `encodeId`
`String` | `correctForIdReference(String forAttr, javax.faces.component.UIComponent component)` If target component contains generated id and for doesn't, correct for id
`Map<String,Object>` | `createParametersMap(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)`
`Object` | `createParameterValue(javax.faces.component.UIParameter parameter)` Returns value of the parameter.
`void` | `encodeAttribute(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, Object property, String attributeName)`
`void` | `encodeAttribute(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, String attribute)`
`void` | `encodeAttributes(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, String attrs)` Encode attributes given by comma-separated string list.
`void` | `encodeAttributesFromArray(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, String[] attrs)`
`void` | `encodeBeginForm(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, javax.faces.context.ResponseWriter writer, String clientId)`
`void` | `encodeBeginFormIfNessesary(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)`
`void` | `encodeChildren(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)`
`void` | `encodeCustomId(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)` Encode id attribute with clientId component property.
`void` | `encodeEndForm(javax.faces.context.FacesContext context, javax.faces.context.ResponseWriter writer)`
`void` | `encodeEndFormIfNessesary(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)`
`void` | `encodeId(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)` Encode id attribute with clientId component property
`void` | `encodeId(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, String attribute)` Encode clientId to custom attribute ( for example, to control name )
`void` | `encodePassThru(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, String defaultHtmlEvent)` Encode common pass-thru html attributes.
`void` | `encodePassThruAttribute(javax.faces.context.FacesContext context, Map<String,Object> attributes, javax.faces.context.ResponseWriter writer, String attribute)` Encode one pass-thru attribute, with plain/boolean/url value, got from properly component attribute.
`void` | `encodePassThruWithExclusions(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, String exclusions, String defaultHtmlEvent)` Encode pass-through attributes except specified ones
`void` | `encodePassThruWithExclusionsArray(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, String[] exclusions, String defaultHtmlEvent)`
`String` | `encodePctOrPx(String value)` formats given value to
`String` | `encodePx(String value)`
`javax.faces.component.UIComponent` | `findComponentFor(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, String id)`
`javax.faces.component.UIComponent` | `findComponentFor(javax.faces.component.UIComponent component, String id)`
`String` | `getActionUrl(javax.faces.context.FacesContext facesContext)`
`protected Object` | `getComponentAttributeName(Object key)` Convert HTML attribute name to component property name.
`static RendererUtils` | `getInstance()` Use this method to get singleton instance of RendererUtils
`javax.faces.component.UIComponent` | `getNestingForm(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)` Find nested form for given component
`boolean` | `hasExplicitId(javax.faces.component.UIComponent component)`
`boolean` | `isBooleanAttribute(javax.faces.component.UIComponent component, String name)` Get boolean value of logical attribute
`boolean` | `isEmpty(Object o)` Checks if the argument passed in is empty or not.
`void` | `writeScript(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component, Object script)` Wtrie JavaScript with start/end elements and type.
`static void` | `writeState(javax.faces.context.FacesContext context)` Write state saving markers to context, include MyFaces view sequence.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### DUMMY_FORM_ID

    public static final String DUMMY_FORM_ID

See Also:
  Constant Field Values

Constructor Detail

### RendererUtils

    protected RendererUtils()

Method Detail

### getInstance

    public static RendererUtils getInstance()

  Use this method to get singleton instance of RendererUtils

  Returns:
    singleton instance

### encodeId

    public void encodeId(javax.faces.context.FacesContext context,
                         javax.faces.component.UIComponent component)
                  throws IOException

  Encode id attribute with clientId component property

  Parameters:
    `context` -
    `component` -
  Throws:
    `IOException`

### encodeId

    public void encodeId(javax.faces.context.FacesContext context,
                         javax.faces.component.UIComponent component,
                         String attribute)
                  throws IOException

  Encode clientId to custom attribute ( for example, to control name )

  Parameters:
    `context` -
    `component` -
    `attribute` -
  Throws:
    `IOException`

### encodeCustomId

    public void encodeCustomId(javax.faces.context.FacesContext context,
                               javax.faces.component.UIComponent component)
                        throws IOException

  Encode id attribute with clientId component property. Encoded only if id not auto generated.

  Parameters:
    `context` -
    `component` -
  Throws:
    `IOException`

### createParameterValue

    public Object createParameterValue(javax.faces.component.UIParameter parameter)

  Returns value of the parameter. If parameter is instance of `JavaScriptParameter`, `NoEcape` attribute is applied.

  Parameters:
    `parameter` - instance of `UIParameter`
  Returns:
    `Object` parameter value

### createParametersMap

    public Map<String,Object> createParametersMap(javax.faces.context.FacesContext context,
                                                  javax.faces.component.UIComponent component)

### encodePassThru

    public void encodePassThru(javax.faces.context.FacesContext context,
                               javax.faces.component.UIComponent component,
                               String defaultHtmlEvent)
                        throws IOException

  Encode common pass-thru html attributes.

  Parameters:
    `context` -
    `component` -
  Throws:
    `IOException`

### encodePassThruWithExclusions

    public void encodePassThruWithExclusions(javax.faces.context.FacesContext context,
                                             javax.faces.component.UIComponent component,
                                             String exclusions,
                                             String defaultHtmlEvent)
                                      throws IOException

  Encode pass-through attributes except specified ones

  Parameters:
    `context` -
    `component` -
    `exclusions` -
  Throws:
    `IOException`

### encodePassThruWithExclusionsArray

    public void encodePassThruWithExclusionsArray(javax.faces.context.FacesContext context,
                                                  javax.faces.component.UIComponent component,
                                                  String[] exclusions,
                                                  String defaultHtmlEvent)
                                           throws IOException

  Throws:
    `IOException`

### encodePassThruAttribute

    public void encodePassThruAttribute(javax.faces.context.FacesContext context,
                                        Map<String,Object> attributes,
                                        javax.faces.context.ResponseWriter writer,
                                        String attribute)
                                 throws IOException

  Encode one pass-thru attribute, with plain/boolean/url value, got from properly component attribute.

  Parameters:
    `context` -
    `writer` -
    `attribute` -
  Throws:
    `IOException`

### encodeAttributesFromArray

    public void encodeAttributesFromArray(javax.faces.context.FacesContext context,
                                          javax.faces.component.UIComponent component,
                                          String[] attrs)
                                   throws IOException

  Throws:
    `IOException`

### encodeAttributes

    public void encodeAttributes(javax.faces.context.FacesContext context,
                                 javax.faces.component.UIComponent component,
                                 String attrs)
                          throws IOException

  Encode attributes given by comma-separated string list.

  Parameters:
    `context` - current JSF context
    `component` - for with render attributes values
    `attrs` - comma separated list of attributes
  Throws:
    `IOException`

### encodeAttribute

    public void encodeAttribute(javax.faces.context.FacesContext context,
                                javax.faces.component.UIComponent component,
                                Object property,
                                String attributeName)
                         throws IOException

  Parameters:
    `context` -
    `component` -
    `property` -
    `attributeName` -
  Throws:
    `IOException`

### encodeAttribute

    public void encodeAttribute(javax.faces.context.FacesContext context,
                                javax.faces.component.UIComponent component,
                                String attribute)
                         throws IOException

  Throws:
    `IOException`

### isEmpty

    public boolean isEmpty(Object o)

  Checks if the argument passed in is empty or not. Object is empty if it is:
  - `null`
  - zero-length string
  - empty collection
  - empty map
  - zero-length array

  Parameters:
    `o` - object to check for emptiness
  Returns:
    `true` if the argument is empty, `false` otherwise
  Since:
    3.3.2

### getComponentAttributeName

    protected Object getComponentAttributeName(Object key)

  Convert HTML attribute name to component property name.

  Parameters:
    `key` -
  Returns:

### attributeValue

    protected Object attributeValue(String name,
                                    Object value)

  Convert attribute value to proper object. For known html boolean attributes return name for true value, otherthise - null. For non-boolean attributes return same value.

  Parameters:
    `name` - attribute name.
    `value` -
  Returns:

### isBooleanAttribute

    public boolean isBooleanAttribute(javax.faces.component.UIComponent component,
                                      String name)

  Get boolean value of logical attribute

  Parameters:
    `component` -
    `name` - attribute name
  Returns:
    true if attribute is equals Boolean.TRUE or String "true" , false otherwise.

### encodePx

    public String encodePx(String value)

### encodePctOrPx

    public String encodePctOrPx(String value)

  formats given value to

  Parameters:
    `value` -
  Returns:

### getNestingForm

    public javax.faces.component.UIComponent getNestingForm(javax.faces.context.FacesContext context,
                                                            javax.faces.component.UIComponent component)

  Find nested form for given component

  Parameters:
    `component` -
  Returns:
    nested `UIForm` component, or `null`

### encodeBeginFormIfNessesary

    public void encodeBeginFormIfNessesary(javax.faces.context.FacesContext context,
                                           javax.faces.component.UIComponent component)
                                    throws IOException

  Parameters:
    `context` -
    `component` -
  Throws:
    `IOException`

### encodeBeginForm

    public void encodeBeginForm(javax.faces.context.FacesContext context,
                                javax.faces.component.UIComponent component,
                                javax.faces.context.ResponseWriter writer,
                                String clientId)
                         throws IOException

  Parameters:
    `context` -
    `component` -
    `writer` -
    `clientId` -
  Throws:
    `IOException`

### encodeEndFormIfNessesary

    public void encodeEndFormIfNessesary(javax.faces.context.FacesContext context,
                                         javax.faces.component.UIComponent component)
                                  throws IOException

  Parameters:
    `context` -
    `component` -
  Throws:
    `IOException`

### writeState

    public static void writeState(javax.faces.context.FacesContext context)
                           throws IOException

  Write state saving markers to context, include MyFaces view sequence.

  Parameters:
    `context` -
  Throws:
    `IOException`

### encodeEndForm

    public void encodeEndForm(javax.faces.context.FacesContext context,
                              javax.faces.context.ResponseWriter writer)
                       throws IOException

  Parameters:
    `context` -
    `writer` -
  Throws:
    `IOException`

### getActionUrl

    public String getActionUrl(javax.faces.context.FacesContext facesContext)

  Parameters:
    `facesContext` -
  Returns:
    String A String representing the action URL

### clientId

    public String clientId(javax.faces.context.FacesContext context,
                           javax.faces.component.UIComponent component)

  Simplified version of `encodeId`

  Parameters:
    `context` -
    `component` -
  Returns:
    client id of current component

### writeScript

    public void writeScript(javax.faces.context.FacesContext context,
                            javax.faces.component.UIComponent component,
                            Object script)
                     throws IOException

  Wtrie JavaScript with start/end elements and type.

  Parameters:
    `context` -
    `component` -
    `script` -
  Throws:
    `IOException`

### correctForIdReference

    public String correctForIdReference(String forAttr,
                                        javax.faces.component.UIComponent component)

  If target component contains generated id and for doesn't, correct for id

  Parameters:
    `forAttr` -
    `component` -

### encodeChildren

    public void encodeChildren(javax.faces.context.FacesContext context,
                               javax.faces.component.UIComponent component)
                        throws IOException

  Throws:
    `IOException`

### hasExplicitId

    public boolean hasExplicitId(javax.faces.component.UIComponent component)

### findComponentFor

    public javax.faces.component.UIComponent findComponentFor(javax.faces.context.FacesContext context,
                                                              javax.faces.component.UIComponent component,
                                                              String id)

### findComponentFor

    public javax.faces.component.UIComponent findComponentFor(javax.faces.component.UIComponent component,
                                                              String id)

  Parameters:
    `component` -
    `id` -
  Returns:

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| RichFaces UI Components UI 4.2.1.Final
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