javax.faces.component
Class UIGraphic

java.lang.Object
  extended by javax.faces.component.UIComponent
      extended by javax.faces.component.UIComponentBase
          extended by javax.faces.component.UIGraphic
All Implemented Interfaces:
StateHolder
Direct Known Subclasses:
HtmlGraphicImage

public class UIGraphic
extends UIComponentBase

UIGraphic is a UIComponent that displays a graphical image to the user. The user cannot manipulate this component; it is for display purposes only.

By default, the rendererType property must be set to "javax.faces.Image". This value can be changed by calling the setRendererType() method.


Field Summary
static java.lang.String COMPONENT_FAMILY
          The standard component family for this component.
static java.lang.String COMPONENT_TYPE
          The standard component type for this component.
 
Constructor Summary
UIGraphic()
          Create a new UIGraphic instance with default property values.
 
Method Summary
 java.lang.String getFamily()
          Return the identifier of the component family to which this component belongs.
 java.lang.String getUrl()
          Return the image URL for this UIGraphic.
 java.lang.Object getValue()
          Returns the value property of the UIGraphic.
 ValueBinding getValueBinding(java.lang.String name)
          Deprecated. This has been replaced by getValueExpression(java.lang.String).
 javax.el.ValueExpression getValueExpression(java.lang.String name)
          Return any ValueExpression set for value if a ValueExpression for url is requested; otherwise, perform the default superclass processing for this method.
 void restoreState(FacesContext context, java.lang.Object state)
           Perform any processing required to restore the state from the entries in the state Object.
 java.lang.Object saveState(FacesContext context)
           Gets the state of the instance as a Serializable Object.
 void setUrl(java.lang.String url)
          Set the image URL for this UIGraphic.
 void setValue(java.lang.Object value)
          Sets the value property of the UIGraphic.
 void setValueBinding(java.lang.String name, ValueBinding binding)
          Deprecated. This has been replaced by setValueExpression(java.lang.String, javax.el.ValueExpression).
 void setValueExpression(java.lang.String name, javax.el.ValueExpression binding)
          Store any ValueExpression specified for url under value instead; otherwise, perform the default superclass processing for this method.
 
Methods inherited from class javax.faces.component.UIComponentBase
addFacesListener, broadcast, decode, encodeBegin, encodeChildren, encodeEnd, findComponent, getAttributes, getChildCount, getChildren, getClientId, getFacesContext, getFacesListeners, getFacet, getFacetCount, getFacets, getFacetsAndChildren, getId, getParent, getRenderer, getRendererType, getRendersChildren, invokeOnComponent, isRendered, isTransient, processDecodes, processRestoreState, processSaveState, processUpdates, processValidators, queueEvent, removeFacesListener, restoreAttachedState, saveAttachedState, setId, setParent, setRendered, setRendererType, setTransient
 
Methods inherited from class javax.faces.component.UIComponent
encodeAll, getContainerClientId
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

COMPONENT_TYPE

public static final java.lang.String COMPONENT_TYPE

The standard component type for this component.

See Also:
Constant Field Values

COMPONENT_FAMILY

public static final java.lang.String COMPONENT_FAMILY

The standard component family for this component.

See Also:
Constant Field Values
Constructor Detail

UIGraphic

public UIGraphic()

Create a new UIGraphic instance with default property values.

Method Detail

getFamily

public java.lang.String getFamily()
Description copied from class: UIComponent

Return the identifier of the component family to which this component belongs. This identifier, in conjunction with the value of the rendererType property, may be used to select the appropriate Renderer for this component instance.

Specified by:
getFamily in class UIComponent

getUrl

public java.lang.String getUrl()

Return the image URL for this UIGraphic. This method is a typesafe alias for getValue().


setUrl

public void setUrl(java.lang.String url)

Set the image URL for this UIGraphic. This method is a typesafe alias for setValue().

Parameters:
url - The new image URL

getValue

public java.lang.Object getValue()

Returns the value property of the UIGraphic. This will typically be rendered as an URL.


setValue

public void setValue(java.lang.Object value)

Sets the value property of the UIGraphic. This will typically be rendered as an URL.

Parameters:
value - the new value

getValueBinding

public ValueBinding getValueBinding(java.lang.String name)
Deprecated. This has been replaced by getValueExpression(java.lang.String).

Return any ValueBinding set for value if a ValueBinding for url is requested; otherwise, perform the default superclass processing for this method.

Overrides:
getValueBinding in class UIComponentBase
Parameters:
name - Name of the attribute or property for which to retrieve a ValueBinding
Throws:
java.lang.NullPointerException - if name is null

setValueBinding

public void setValueBinding(java.lang.String name,
                            ValueBinding binding)
Deprecated. This has been replaced by setValueExpression(java.lang.String, javax.el.ValueExpression).

Store any ValueBinding specified for url under value instead; otherwise, perform the default superclass processing for this method. In all cases, the superclass is relied on to convert the ValueBinding to a ValueExpression.

Overrides:
setValueBinding in class UIComponentBase
Parameters:
name - Name of the attribute or property for which to set a ValueBinding
binding - The ValueBinding to set, or null to remove any currently set ValueBinding
Throws:
java.lang.NullPointerException - if name is null

getValueExpression

public javax.el.ValueExpression getValueExpression(java.lang.String name)

Return any ValueExpression set for value if a ValueExpression for url is requested; otherwise, perform the default superclass processing for this method.

Overrides:
getValueExpression in class UIComponentBase
Parameters:
name - Name of the attribute or property for which to retrieve a ValueExpression
Throws:
java.lang.NullPointerException - if name is null
Since:
1.2

setValueExpression

public void setValueExpression(java.lang.String name,
                               javax.el.ValueExpression binding)

Store any ValueExpression specified for url under value instead; otherwise, perform the default superclass processing for this method.

Overrides:
setValueExpression in class UIComponentBase
Parameters:
name - Name of the attribute or property for which to set a ValueExpression
binding - The ValueExpression to set, or null to remove any currently set ValueExpression
Throws:
java.lang.NullPointerException - if name is null
Since:
1.2

saveState

public java.lang.Object saveState(FacesContext context)
Description copied from interface: StateHolder

Gets the state of the instance as a Serializable Object.

If the class that implements this interface has references to instances that implement StateHolder (such as a UIComponent with event handlers, validators, etc.) this method must call the StateHolder.saveState(javax.faces.context.FacesContext) method on all those instances as well. This method must not save the state of children and facets. That is done via the StateManager

This method must not alter the state of the implementing object. In other words, after executing this code:

 Object state = component.saveState(facesContext);
 

component should be the same as before executing it.

The return from this method must be Serializable

Specified by:
saveState in interface StateHolder
Overrides:
saveState in class UIComponentBase

restoreState

public void restoreState(FacesContext context,
                         java.lang.Object state)
Description copied from interface: StateHolder

Perform any processing required to restore the state from the entries in the state Object.

If the class that implements this interface has references to instances that also implement StateHolder (such as a UIComponent with event handlers, validators, etc.) this method must call the StateHolder.restoreState(javax.faces.context.FacesContext, java.lang.Object) method on all those instances as well.

Specified by:
restoreState in interface StateHolder
Overrides:
restoreState in class UIComponentBase


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