HiddenFieldProcessor (Metawidget API Documentation)

java.lang.Object
- org.metawidget.faces.component.html.widgetprocessor.HiddenFieldProcessor

All Implemented Interfaces:

Immutable, WidgetProcessor<javax.faces.component.UIComponent,UIMetawidget>
```
public class HiddenFieldProcessor
extends Object
implements WidgetProcessor<javax.faces.component.UIComponent,UIMetawidget>
```
WidgetProcessor that adds HTML <input type="hidden"> tags to hidden and read-only values, so that they POST back.
Note: passing values via hidden tags is a potential security risk: they can be modified by malicious clients before being returned to the server. Where possible, prefer session-scoped or conversation-scoped beans instead.
Note: because this processor relies on StandardBindingProcessor to configure the hidden field's binding, it must come before StandardBindingProcessor in the list of WidgetProcessors.

Author:

Richard Kennard

Constructor Summary

Constructors
Constructor and Description

HiddenFieldProcessor()

Constructors
Constructor and Description
`HiddenFieldProcessor()`

Method Summary

Methods
Modifier and Type	Method and Description
`javax.faces.component.UIComponent`	`processWidget(javax.faces.component.UIComponent component, String elementName, Map<String,String> attributes, UIMetawidget metawidget)` Process the given widget.
`protected javax.faces.component.UIComponent`	`wrapWithHiddenField(javax.faces.component.UIComponent component, Map<String,String> attributes, UIMetawidget metawidget)`

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

- Constructor Detail
  - HiddenFieldProcessor
```
public HiddenFieldProcessor()
```
- Method Detail
  - processWidget
```
public javax.faces.component.UIComponent processWidget(javax.faces.component.UIComponent component,
                                              String elementName,
                                              Map<String,String> attributes,
                                              UIMetawidget metawidget)
```
    Description copied from interface: WidgetProcessor
    
    Process the given widget. Called after a widget has been built by the WidgetBuilder, and before it is added to the Layout.
    
    Specified by:
    
    processWidget in interface WidgetProcessor<javax.faces.component.UIComponent,UIMetawidget>
    
    Parameters:
    component - the widget to process. Never null
    elementName - XML node name of the business field. Typically 'entity', 'property' or 'action'. Never null
    attributes - attributes of the widget to process. Never null. This Map is modifiable - changes will be passed to subsequent WidgetProcessors and Layouts
    metawidget - the parent Metawidget. Never null
    
    Returns:
    generally the original widget (as passed in to the first argument). Can be a different widget if the WidgetProcessor wishes to substitute the original widget for another. Can be null if the WidgetProcessor wishes to cancel all further processing of this widget (including laying out)
  - wrapWithHiddenField
```
protected javax.faces.component.UIComponent wrapWithHiddenField(javax.faces.component.UIComponent component,
                                                    Map<String,String> attributes,
                                                    UIMetawidget metawidget)
```
    Parameters:
    attributes - attributes of the widget. Never null
    metawidget - the parent Metawidget. May be useful because the component hasn't been added to its parent yet

Class HiddenFieldProcessor

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

HiddenFieldProcessor

Method Detail

processWidget

wrapWithHiddenField