UISelectItems (Java EE 5 SDK)

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Java EE 5 SDK

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javax.faces.component Class UISelectItems

java.lang.Object
  extended by javax.faces.component.UIComponent
      extended by javax.faces.component.UIComponentBase
          extended by javax.faces.component.UISelectItems
所有已实现的接口:
StateHolder
public class UISelectItems
extends UIComponentBase

UISelectItems is a component that may be nested inside a UISelectMany or UISelectOne component, and causes the addition of one or more SelectItem instances to the list of available options in the parent component. The value of this component (set either directly, or acquired indirectly a ValueExpression, can be of any of the following types:

  • Single instance of SelectItem - This instance is added to the set of available options for the parent tag.
  • Array of SelectItem - This set of instances is added to the set of available options for the parent component, in ascending subscript order.
  • Collection of SelectItem - This set of instances is added to the set of available options for the parent component, in the order provided by an iterator over them.
  • Map - The keys of this object (once converted to Strings) are assumed to be labels, and the values of this object (once converted to Strings) are assumed to be values, of SelectItem instances that will be constructed dynamically and added to the set of available options for the parent component, in the order provided by an iterator over the keys.

字段摘要
static String COMPONENT_FAMILY
          The standard component family for this component.
static String COMPONENT_TYPE
          The standard component type for this component.
 
Fields inherited from class javax.faces.component.UIComponent
bindings
 
构造器摘要
UISelectItems()
          Create a new UISelectItems instance with default property values.
 
方法摘要
 String getFamily()
          Return the identifier of the component family to which this component belongs.
 Object getValue()
          Returns the value property of the UISelectItems.
 void restoreState(FacesContext context, Object state)
           Perform any processing required to restore the state from the entries in the state Object.
 Object saveState(FacesContext context)
           Gets the state of the instance as a Serializable Object.
 void setValue(Object value)
          Sets the value property of the UISelectItems.
 
类方法继承 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, getValueBinding, invokeOnComponent, isRendered, isTransient, processDecodes, processRestoreState, processSaveState, processUpdates, processValidators, queueEvent, removeFacesListener, restoreAttachedState, saveAttachedState, setId, setParent, setRendered, setRendererType, setTransient, setValueBinding
 
类方法继承 javax.faces.component.UIComponent
encodeAll, getContainerClientId, getValueExpression, setValueExpression
 
类方法继承 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

字段详细信息

COMPONENT_TYPE

public static final String COMPONENT_TYPE

The standard component type for this component.

另请参见:
常量字段

COMPONENT_FAMILY

public static final String COMPONENT_FAMILY

The standard component family for this component.

另请参见:
常量字段

构造器详细信息

UISelectItems

public UISelectItems()

Create a new UISelectItems instance with default property values.

方法详细信息

getFamily

public 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.

规范说明:
getFamily in class UIComponent

getValue

public Object getValue()

Returns the value property of the UISelectItems.

setValue

public void setValue(Object value)

Sets the value property of the UISelectItems.

参数:
value - the new value

saveState

public 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

规范说明:
saveState in interface StateHolder
重写:
saveState in class UIComponentBase

restoreState

public void restoreState(FacesContext context,
                         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.

规范说明:
restoreState in interface StateHolder
重写:
restoreState in class UIComponentBase
概述  软件包   类  树  已过时  索引  帮助 
Java EE 5 SDK

深圳电信培训中心.徐海蛟老师.
 上一个类   下一个类 框架    无框架    
摘要: 嵌套 | 字段 | 构造器 | 方法 详细信息: 字段 | 构造器 | 方法
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