UISelectItem (Java EE 5 SDK)

javax.faces.component Class UISelectItem

java.lang.Object
  javax.faces.component.UIComponent
      javax.faces.component.UIComponentBase
          javax.faces.component.UISelectItem

所有已实现的接口:

StateHolder

public class UISelectItem

extends UIComponentBase

UISelectItem is a component that may be nested inside a UISelectMany or UISelectOne component, and causes the addition of a SelectItem instance to the list of available options for the parent component. The contents of the SelectItem can be specified in one of the following ways:

• The value attribute's value is an instance of SelectItem.
• The associated ValueExpression points at a model data item of type SelectItem.
• A new SelectItem instance is synthesized from the values of the itemDescription, itemDisabled, itemLabel, and itemValue attributes.

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

UISelectItem

public UISelectItem()

Create a new UISelectItem instance with default property values.

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

getItemDescription

public String getItemDescription()

Return the description for this selection item.

setItemDescription

public void setItemDescription(String itemDescription)

Set the description for this selection item.

参数:

itemDescription - The new description

isItemDisabled

public boolean isItemDisabled()

Return the disabled setting for this selection item.

setItemDisabled

public void setItemDisabled(boolean itemDisabled)

Set the disabled value for this selection item.

参数:

itemDisabled - The new disabled flag

isItemEscaped

public boolean isItemEscaped()

Return the escape setting for the label of this selection item.

setItemEscaped

public void setItemEscaped(boolean itemEscaped)

Set the escape value for the label of this selection item.

参数:

itemEscaped - The new disabled flag

getItemLabel

public String getItemLabel()

Return the localized label for this selection item.

setItemLabel

public void setItemLabel(String itemLabel)

Set the localized label for this selection item.

参数:

itemLabel - The new localized label

getItemValue

public Object getItemValue()

Return the server value for this selection item.

setItemValue

public void setItemValue(Object itemValue)

Set the server value for this selection item.

参数:

itemValue - The new server value

getValue

public Object getValue()

Returns the value property of the UISelectItem.

setValue

public void setValue(Object value)

Sets the value property of the UISelectItem.

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

public void restoreState(FacesContext context,
                         Object state)